./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/unroll-4.wvr.c --traceabstraction.use.conditional.por.in.concurrent.analysis true --traceabstraction.commutativity.condition.synthesis NECESSARY_AND_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/unroll-4.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 bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd --traceabstraction.use.conditional.por.in.concurrent.analysis true --traceabstraction.commutativity.condition.synthesis NECESSARY_AND_SUFFICIENT --- Real Ultimate output --- This is Ultimate 0.3.0-dev-ebd4107-m [2025-01-24 04:34:31,186 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-24 04:34:31,263 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-01-24 04:34:31,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-24 04:34:31,266 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-24 04:34:31,284 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-24 04:34:31,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-24 04:34:31,284 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-24 04:34:31,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-24 04:34:31,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-24 04:34:31,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-24 04:34:31,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-24 04:34:31,286 INFO L153 SettingsManager]: * Use SBE=true [2025-01-24 04:34:31,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-24 04:34:31,286 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-24 04:34:31,287 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-24 04:34:31,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-24 04:34:31,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-24 04:34:31,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-24 04:34:31,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-24 04:34:31,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-24 04:34:31,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-24 04:34:31,287 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-24 04:34:31,287 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-24 04:34:31,287 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-24 04:34:31,287 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-24 04:34:31,287 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-24 04:34:31,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-24 04:34:31,288 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-24 04:34:31,288 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-24 04:34:31,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-01-24 04:34:31,288 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-24 04:34:31,288 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-24 04:34:31,288 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-24 04:34:31,289 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-01-24 04:34:31,289 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-24 04:34:31,289 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-24 04:34:31,289 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-01-24 04:34:31,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-24 04:34:31,289 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-24 04:34:31,289 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-01-24 04:34:31,289 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-01-24 04:34:31,289 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-01-24 04:34:31,289 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 -> bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd 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 -> NECESSARY_AND_SUFFICIENT [2025-01-24 04:34:31,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-24 04:34:31,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-24 04:34:31,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-24 04:34:31,531 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-24 04:34:31,532 INFO L274 PluginConnector]: CDTParser initialized [2025-01-24 04:34:31,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/weaver/unroll-4.wvr.c [2025-01-24 04:34:32,680 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/7d8beb299/05c3ebd92d024793b5291f420d51da1b/FLAG7058d08c8 [2025-01-24 04:34:32,837 INFO L384 CDTParser]: Found 1 translation units. [2025-01-24 04:34:32,838 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/unroll-4.wvr.c [2025-01-24 04:34:32,842 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/7d8beb299/05c3ebd92d024793b5291f420d51da1b/FLAG7058d08c8 [2025-01-24 04:34:32,851 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/7d8beb299/05c3ebd92d024793b5291f420d51da1b [2025-01-24 04:34:32,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-24 04:34:32,853 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-24 04:34:32,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-24 04:34:32,854 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-24 04:34:32,857 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-24 04:34:32,857 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:34:32" (1/1) ... [2025-01-24 04:34:32,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689784a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:32, skipping insertion in model container [2025-01-24 04:34:32,858 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:34:32" (1/1) ... [2025-01-24 04:34:32,867 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-24 04:34:32,987 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/unroll-4.wvr.c[2598,2611] [2025-01-24 04:34:32,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-24 04:34:33,003 INFO L200 MainTranslator]: Completed pre-run [2025-01-24 04:34:33,056 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/unroll-4.wvr.c[2598,2611] [2025-01-24 04:34:33,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-24 04:34:33,071 INFO L204 MainTranslator]: Completed translation [2025-01-24 04:34:33,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33 WrapperNode [2025-01-24 04:34:33,072 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-24 04:34:33,073 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-24 04:34:33,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-24 04:34:33,074 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-24 04:34:33,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ... [2025-01-24 04:34:33,082 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ... [2025-01-24 04:34:33,098 INFO L138 Inliner]: procedures = 23, calls = 26, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 138 [2025-01-24 04:34:33,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-24 04:34:33,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-24 04:34:33,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-24 04:34:33,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-24 04:34:33,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ... [2025-01-24 04:34:33,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ... [2025-01-24 04:34:33,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ... [2025-01-24 04:34:33,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ... [2025-01-24 04:34:33,112 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ... [2025-01-24 04:34:33,112 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ... [2025-01-24 04:34:33,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ... [2025-01-24 04:34:33,119 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ... [2025-01-24 04:34:33,119 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ... [2025-01-24 04:34:33,120 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-24 04:34:33,121 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-24 04:34:33,121 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-24 04:34:33,121 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-24 04:34:33,122 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ... [2025-01-24 04:34:33,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-01-24 04:34:33,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-24 04:34:33,147 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) [2025-01-24 04:34:33,148 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 [2025-01-24 04:34:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-24 04:34:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-24 04:34:33,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-24 04:34:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-24 04:34:33,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-24 04:34:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-24 04:34:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-01-24 04:34:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-24 04:34:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-24 04:34:33,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-24 04:34:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-01-24 04:34:33,164 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-24 04:34:33,220 INFO L234 CfgBuilder]: Building ICFG [2025-01-24 04:34:33,221 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-24 04:34:33,396 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-24 04:34:33,396 INFO L283 CfgBuilder]: Performing block encoding [2025-01-24 04:34:33,581 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-24 04:34:33,581 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-24 04:34:33,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:34:33 BoogieIcfgContainer [2025-01-24 04:34:33,582 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-24 04:34:33,584 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-24 04:34:33,585 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-24 04:34:33,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-24 04:34:33,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 04:34:32" (1/3) ... [2025-01-24 04:34:33,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4da7c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 04:34:33, skipping insertion in model container [2025-01-24 04:34:33,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (2/3) ... [2025-01-24 04:34:33,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4da7c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 04:34:33, skipping insertion in model container [2025-01-24 04:34:33,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:34:33" (3/3) ... [2025-01-24 04:34:33,590 INFO L128 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2025-01-24 04:34:33,600 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-24 04:34:33,601 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unroll-4.wvr.c that has 3 procedures, 18 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-24 04:34:33,601 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-24 04:34:33,638 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-24 04:34:33,669 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-24 04:34:33,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-01-24 04:34:33,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-24 04:34:33,671 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) [2025-01-24 04:34:33,673 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 [2025-01-24 04:34:33,726 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-01-24 04:34:33,736 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-01-24 04:34:33,740 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;@37f67151, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-24 04:34:33,740 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-01-24 04:34:33,822 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-24 04:34:33,822 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-24 04:34:33,822 INFO L139 ounterexampleChecker]: Examining path program with hash 1002541745, occurence #1 [2025-01-24 04:34:33,823 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-24 04:34:33,823 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-24 04:34:33,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-24 04:34:33,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1905263837, now seen corresponding path program 1 times [2025-01-24 04:34:33,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-24 04:34:33,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683678051] [2025-01-24 04:34:33,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-24 04:34:33,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-24 04:34:33,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-24 04:34:33,909 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-24 04:34:33,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-24 04:34:33,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-24 04:34:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-24 04:34:34,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-24 04:34:34,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683678051] [2025-01-24 04:34:34,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683678051] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-24 04:34:34,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-24 04:34:34,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-24 04:34:34,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512449199] [2025-01-24 04:34:34,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-24 04:34:34,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-24 04:34:34,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-24 04:34:34,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-24 04:34:34,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-24 04:34:34,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:34:34,061 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-24 04:34:34,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-24 04:34:34,062 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:34:34,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:34:34,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-24 04:34:34,099 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-24 04:34:34,099 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-24 04:34:34,099 INFO L139 ounterexampleChecker]: Examining path program with hash 1002541745, occurence #2 [2025-01-24 04:34:34,100 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-24 04:34:34,100 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-24 04:34:34,100 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:34:34,100 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 2 [2025-01-24 04:34:34,112 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:34:34,112 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 5 [2025-01-24 04:34:34,112 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:34:34,112 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 10 [2025-01-24 04:34:34,113 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:34:34,113 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 12 [2025-01-24 04:34:34,114 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:34:34,114 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 13 [2025-01-24 04:34:34,114 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:34:34,114 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-24 04:34:34,114 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-24 04:34:34,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-24 04:34:34,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1065626441, now seen corresponding path program 1 times [2025-01-24 04:34:34,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-24 04:34:34,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405860469] [2025-01-24 04:34:34,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-24 04:34:34,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-24 04:34:34,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-24 04:34:34,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-24 04:34:34,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-24 04:34:34,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-24 04:34:34,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-24 04:34:34,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-24 04:34:34,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405860469] [2025-01-24 04:34:34,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405860469] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-24 04:34:34,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-24 04:34:34,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-24 04:34:34,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982457920] [2025-01-24 04:34:34,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-24 04:34:34,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-24 04:34:34,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-24 04:34:34,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-24 04:34:34,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-24 04:34:34,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:34:34,254 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-24 04:34:34,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-24 04:34:34,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:34:34,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:34:34,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:34:34,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:34:34,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-24 04:34:34,289 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-24 04:34:34,289 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-24 04:34:34,289 INFO L139 ounterexampleChecker]: Examining path program with hash 1002541745, occurence #3 [2025-01-24 04:34:34,289 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-24 04:34:34,289 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-24 04:34:34,289 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:34:34,290 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 3 [2025-01-24 04:34:34,290 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:34:34,290 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 6 [2025-01-24 04:34:34,290 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:34:34,290 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 11 [2025-01-24 04:34:34,290 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:34:34,290 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 13 [2025-01-24 04:34:34,290 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:34:34,290 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 14 [2025-01-24 04:34:34,290 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:34:34,290 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-24 04:34:34,290 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-24 04:34:34,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-24 04:34:34,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1670925734, now seen corresponding path program 1 times [2025-01-24 04:34:34,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-24 04:34:34,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109862167] [2025-01-24 04:34:34,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-24 04:34:34,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-24 04:34:34,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-24 04:34:34,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-24 04:34:34,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-24 04:34:34,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-24 04:34:34,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-24 04:34:34,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-24 04:34:34,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109862167] [2025-01-24 04:34:34,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109862167] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-24 04:34:34,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-24 04:34:34,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-24 04:34:34,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700346741] [2025-01-24 04:34:34,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-24 04:34:34,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-24 04:34:34,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-24 04:34:34,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-24 04:34:34,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-24 04:34:34,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:34:34,434 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-24 04:34:34,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-24 04:34:34,434 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:34:34,434 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:34:34,434 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:34:34,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:34:34,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:34:34,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-24 04:34:34,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-24 04:34:34,510 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-24 04:34:34,510 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-24 04:34:34,510 INFO L139 ounterexampleChecker]: Examining path program with hash -230737819, occurence #1 [2025-01-24 04:34:34,510 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-24 04:34:34,510 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-24 04:34:34,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-24 04:34:34,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1911828125, now seen corresponding path program 1 times [2025-01-24 04:34:34,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-24 04:34:34,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561810763] [2025-01-24 04:34:34,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-24 04:34:34,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-24 04:34:34,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-24 04:34:34,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-24 04:34:34,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-24 04:34:34,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-24 04:34:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-24 04:34:34,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-24 04:34:34,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561810763] [2025-01-24 04:34:34,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561810763] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-24 04:34:34,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-24 04:34:34,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-24 04:34:34,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130090203] [2025-01-24 04:34:34,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-24 04:34:34,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-24 04:34:34,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-24 04:34:34,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-24 04:34:34,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-24 04:34:34,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:34:34,643 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-24 04:34:34,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-24 04:34:34,643 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:34:34,643 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:34:34,643 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-24 04:34:34,643 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:34:34,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:34:34,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:34:34,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-24 04:34:34,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-24 04:34:34,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-24 04:34:34,695 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-24 04:34:34,695 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-24 04:34:34,695 INFO L139 ounterexampleChecker]: Examining path program with hash 1718675527, occurence #1 [2025-01-24 04:34:34,695 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-24 04:34:34,695 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-24 04:34:34,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-24 04:34:34,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1750187185, now seen corresponding path program 1 times [2025-01-24 04:34:34,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-24 04:34:34,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8346966] [2025-01-24 04:34:34,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-24 04:34:34,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-24 04:34:34,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-24 04:34:34,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-24 04:34:34,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-24 04:34:34,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-24 04:34:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-24 04:34:34,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-24 04:34:34,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8346966] [2025-01-24 04:34:34,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8346966] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-24 04:34:34,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415204511] [2025-01-24 04:34:34,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-24 04:34:34,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-24 04:34:34,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-24 04:34:34,965 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) [2025-01-24 04:34:34,967 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 [2025-01-24 04:34:35,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-24 04:34:35,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-24 04:34:35,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-24 04:34:35,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-24 04:34:35,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-24 04:34:35,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-24 04:34:35,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-24 04:34:35,203 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-24 04:34:35,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 44 [2025-01-24 04:34:35,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-24 04:34:35,230 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-24 04:34:35,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 155 [2025-01-24 04:34:35,660 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-24 04:34:35,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 13 new quantified variables, introduced 28 case distinctions, treesize of input 1265 treesize of output 989 [2025-01-24 04:35:04,574 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-24 04:37:35,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-24 04:37:35,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415204511] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-24 04:37:35,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-24 04:37:35,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2025-01-24 04:37:35,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073887631] [2025-01-24 04:37:35,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-24 04:37:35,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-24 04:37:35,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-24 04:37:35,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-24 04:37:35,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2025-01-24 04:37:35,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:37:35,871 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-24 04:37:35,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-24 04:37:35,872 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:37:35,872 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:37:35,872 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-24 04:37:35,872 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-24 04:37:35,872 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:37:36,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:37:36,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:37:36,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-24 04:37:36,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-24 04:37:36,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-24 04:37:36,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-24 04:37:36,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-24 04:37:36,317 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-24 04:37:36,317 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-24 04:37:36,317 INFO L139 ounterexampleChecker]: Examining path program with hash 1718675527, occurence #2 [2025-01-24 04:37:36,317 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-24 04:37:36,317 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-24 04:37:36,317 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:37:36,317 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-01-24 04:37:36,317 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:37:36,317 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 7 [2025-01-24 04:37:36,317 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:37:36,317 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 14 [2025-01-24 04:37:36,317 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:37:36,317 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 16 [2025-01-24 04:37:36,317 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:37:36,317 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 17 [2025-01-24 04:37:36,317 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:37:36,317 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-24 04:37:36,318 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-24 04:37:36,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-24 04:37:36,318 INFO L85 PathProgramCache]: Analyzing trace with hash 273564692, now seen corresponding path program 2 times [2025-01-24 04:37:36,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-24 04:37:36,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175694061] [2025-01-24 04:37:36,318 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-24 04:37:36,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-24 04:37:36,327 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-24 04:37:36,347 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-24 04:37:36,351 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-24 04:37:36,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-24 04:37:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-24 04:37:36,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-24 04:37:36,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175694061] [2025-01-24 04:37:36,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175694061] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-24 04:37:36,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317681753] [2025-01-24 04:37:36,574 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-24 04:37:36,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-24 04:37:36,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-24 04:37:36,576 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) [2025-01-24 04:37:36,577 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 [2025-01-24 04:37:36,612 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-24 04:37:36,641 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-24 04:37:36,641 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-24 04:37:36,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-24 04:37:36,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-24 04:37:36,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-24 04:37:36,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-24 04:37:36,690 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-24 04:37:36,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-24 04:37:36,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317681753] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-24 04:37:36,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-24 04:37:36,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2025-01-24 04:37:36,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881082741] [2025-01-24 04:37:36,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-24 04:37:36,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-24 04:37:36,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-24 04:37:36,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-24 04:37:36,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2025-01-24 04:37:36,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:37:36,808 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-24 04:37:36,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-24 04:37:36,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:37:36,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:37:36,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-24 04:37:36,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-24 04:37:36,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2025-01-24 04:37:36,809 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:37:37,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:37:37,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:37:37,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-24 04:37:37,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-24 04:37:37,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-24 04:37:37,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-24 04:37:37,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-24 04:37:37,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-24 04:37:37,583 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-24 04:37:37,583 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-24 04:37:37,583 INFO L139 ounterexampleChecker]: Examining path program with hash -230737819, occurence #2 [2025-01-24 04:37:37,583 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-24 04:37:37,583 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-24 04:37:37,583 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:37:37,583 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-01-24 04:37:37,583 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:37:37,583 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 7 [2025-01-24 04:37:37,583 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:37:37,584 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 15 [2025-01-24 04:37:37,584 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:37:37,584 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 17 [2025-01-24 04:37:37,584 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:37:37,584 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-24 04:37:37,584 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-24 04:37:37,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-24 04:37:37,584 INFO L85 PathProgramCache]: Analyzing trace with hash 985778129, now seen corresponding path program 3 times [2025-01-24 04:37:37,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-24 04:37:37,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800243930] [2025-01-24 04:37:37,584 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-24 04:37:37,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-24 04:37:37,590 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-24 04:37:37,605 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-24 04:37:37,608 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-24 04:37:37,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-24 04:37:37,694 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-24 04:37:37,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-24 04:37:37,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800243930] [2025-01-24 04:37:37,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800243930] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-24 04:37:37,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312919287] [2025-01-24 04:37:37,695 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-24 04:37:37,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-24 04:37:37,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-24 04:37:37,697 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) [2025-01-24 04:37:37,698 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 [2025-01-24 04:37:37,731 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-24 04:37:37,759 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-24 04:37:37,759 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-24 04:37:37,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-24 04:37:37,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-24 04:37:37,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-24 04:37:37,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-24 04:37:37,954 INFO L349 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2025-01-24 04:37:37,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 117 treesize of output 54 [2025-01-24 04:37:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-24 04:37:37,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-24 04:37:38,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 298 treesize of output 262 [2025-01-24 04:37:38,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-24 04:37:38,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 15 new quantified variables, introduced 36 case distinctions, treesize of input 1930 treesize of output 1276 [2025-01-24 04:38:16,036 WARN L249 Executor]: External (MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2025-01-24 04:38:16,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2025-01-24 04:38:16,037 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2025-01-24 04:38:16,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-24 04:38:16,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-24 04:38:16,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2025-01-24 04:38:16,244 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.PartialOrderCegarLoop.isCounterexampleFeasible(PartialOrderCegarLoop.java:320) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:238) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 70 more [2025-01-24 04:38:16,248 INFO L158 Benchmark]: Toolchain (without parser) took 223395.08ms. Allocated memory was 117.4MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 92.5MB in the beginning and 982.3MB in the end (delta: -889.8MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2025-01-24 04:38:16,248 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory is still 61.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-24 04:38:16,249 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.05ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 78.9MB in the end (delta: 13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-24 04:38:16,249 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.15ms. Allocated memory is still 117.4MB. Free memory was 78.6MB in the beginning and 77.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-24 04:38:16,249 INFO L158 Benchmark]: Boogie Preprocessor took 18.61ms. Allocated memory is still 117.4MB. Free memory was 77.2MB in the beginning and 76.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-24 04:38:16,250 INFO L158 Benchmark]: RCFGBuilder took 461.46ms. Allocated memory is still 117.4MB. Free memory was 75.8MB in the beginning and 87.4MB in the end (delta: -11.6MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2025-01-24 04:38:16,250 INFO L158 Benchmark]: TraceAbstraction took 222664.07ms. Allocated memory was 117.4MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 86.6MB in the beginning and 982.3MB in the end (delta: -895.7MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2025-01-24 04:38:16,251 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory is still 61.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.05ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 78.9MB in the end (delta: 13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.15ms. Allocated memory is still 117.4MB. Free memory was 78.6MB in the beginning and 77.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.61ms. Allocated memory is still 117.4MB. Free memory was 77.2MB in the beginning and 76.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 461.46ms. Allocated memory is still 117.4MB. Free memory was 75.8MB in the beginning and 87.4MB in the end (delta: -11.6MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. * TraceAbstraction took 222664.07ms. Allocated memory was 117.4MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 86.6MB in the beginning and 982.3MB in the end (delta: -895.7MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/unroll-4.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.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 bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd --traceabstraction.use.conditional.por.in.concurrent.analysis true --traceabstraction.commutativity.condition.synthesis NECESSARY_AND_SUFFICIENT --- Real Ultimate output --- This is Ultimate 0.3.0-dev-ebd4107-m [2025-01-24 04:38:17,804 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-24 04:38:17,878 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf [2025-01-24 04:38:17,882 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-24 04:38:17,882 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-24 04:38:17,894 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-24 04:38:17,895 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-24 04:38:17,895 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-24 04:38:17,895 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-24 04:38:17,895 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-24 04:38:17,895 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-24 04:38:17,895 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-24 04:38:17,895 INFO L153 SettingsManager]: * Use SBE=true [2025-01-24 04:38:17,895 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-24 04:38:17,896 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-24 04:38:17,896 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-24 04:38:17,896 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-24 04:38:17,896 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-24 04:38:17,896 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-24 04:38:17,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-24 04:38:17,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-24 04:38:17,896 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-24 04:38:17,896 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-24 04:38:17,896 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-24 04:38:17,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-24 04:38:17,896 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-24 04:38:17,896 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-24 04:38:17,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-24 04:38:17,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-24 04:38:17,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-24 04:38:17,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-24 04:38:17,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-01-24 04:38:17,897 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-24 04:38:17,897 INFO L153 SettingsManager]: * Refinement strategy for commutativity condition synthesis=FOX [2025-01-24 04:38:17,897 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-24 04:38:17,897 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-24 04:38:17,897 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-01-24 04:38:17,897 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-24 04:38:17,897 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-24 04:38:17,897 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-01-24 04:38:17,897 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-24 04:38:17,897 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-24 04:38:17,897 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-01-24 04:38:17,897 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-01-24 04:38:17,897 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-01-24 04:38:17,897 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 -> bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd 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 -> NECESSARY_AND_SUFFICIENT [2025-01-24 04:38:18,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-24 04:38:18,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-24 04:38:18,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-24 04:38:18,092 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-24 04:38:18,092 INFO L274 PluginConnector]: CDTParser initialized [2025-01-24 04:38:18,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/weaver/unroll-4.wvr.c [2025-01-24 04:38:19,211 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/27fd6dd38/edc55bc3a5d74733bc54b037a75986b4/FLAGa7005b84f [2025-01-24 04:38:19,366 INFO L384 CDTParser]: Found 1 translation units. [2025-01-24 04:38:19,366 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/unroll-4.wvr.c [2025-01-24 04:38:19,371 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/27fd6dd38/edc55bc3a5d74733bc54b037a75986b4/FLAGa7005b84f [2025-01-24 04:38:19,776 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/27fd6dd38/edc55bc3a5d74733bc54b037a75986b4 [2025-01-24 04:38:19,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-24 04:38:19,778 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-24 04:38:19,779 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-24 04:38:19,779 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-24 04:38:19,782 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-24 04:38:19,782 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:38:19" (1/1) ... [2025-01-24 04:38:19,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68d42d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:38:19, skipping insertion in model container [2025-01-24 04:38:19,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:38:19" (1/1) ... [2025-01-24 04:38:19,794 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-24 04:38:19,888 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/unroll-4.wvr.c[2598,2611] [2025-01-24 04:38:19,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-24 04:38:19,901 INFO L200 MainTranslator]: Completed pre-run [2025-01-24 04:38:19,949 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/unroll-4.wvr.c[2598,2611] [2025-01-24 04:38:19,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-24 04:38:19,964 INFO L204 MainTranslator]: Completed translation [2025-01-24 04:38:19,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:38:19 WrapperNode [2025-01-24 04:38:19,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-24 04:38:19,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-24 04:38:19,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-24 04:38:19,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-24 04:38:19,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:38:19" (1/1) ... [2025-01-24 04:38:19,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:38:19" (1/1) ... [2025-01-24 04:38:19,999 INFO L138 Inliner]: procedures = 25, calls = 26, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 136 [2025-01-24 04:38:19,999 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-24 04:38:19,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-24 04:38:20,000 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-24 04:38:20,000 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-24 04:38:20,005 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:38:19" (1/1) ... [2025-01-24 04:38:20,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:38:19" (1/1) ... [2025-01-24 04:38:20,013 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:38:19" (1/1) ... [2025-01-24 04:38:20,013 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:38:19" (1/1) ... [2025-01-24 04:38:20,022 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:38:19" (1/1) ... [2025-01-24 04:38:20,023 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:38:19" (1/1) ... [2025-01-24 04:38:20,025 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:38:19" (1/1) ... [2025-01-24 04:38:20,028 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:38:19" (1/1) ... [2025-01-24 04:38:20,029 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:38:19" (1/1) ... [2025-01-24 04:38:20,030 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-24 04:38:20,034 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-24 04:38:20,034 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-24 04:38:20,034 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-24 04:38:20,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:38:19" (1/1) ... [2025-01-24 04:38:20,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-01-24 04:38:20,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-24 04:38:20,060 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) [2025-01-24 04:38:20,063 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 [2025-01-24 04:38:20,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-24 04:38:20,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-24 04:38:20,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-24 04:38:20,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-24 04:38:20,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-24 04:38:20,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2025-01-24 04:38:20,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-24 04:38:20,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2025-01-24 04:38:20,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-24 04:38:20,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-24 04:38:20,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2025-01-24 04:38:20,083 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-24 04:38:20,145 INFO L234 CfgBuilder]: Building ICFG [2025-01-24 04:38:20,147 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-24 04:38:20,386 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-24 04:38:20,386 INFO L283 CfgBuilder]: Performing block encoding [2025-01-24 04:38:20,623 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-24 04:38:20,623 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-24 04:38:20,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:38:20 BoogieIcfgContainer [2025-01-24 04:38:20,626 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-24 04:38:20,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-24 04:38:20,628 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-24 04:38:20,632 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-24 04:38:20,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 04:38:19" (1/3) ... [2025-01-24 04:38:20,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c948076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 04:38:20, skipping insertion in model container [2025-01-24 04:38:20,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:38:19" (2/3) ... [2025-01-24 04:38:20,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c948076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 04:38:20, skipping insertion in model container [2025-01-24 04:38:20,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:38:20" (3/3) ... [2025-01-24 04:38:20,635 INFO L128 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2025-01-24 04:38:20,643 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-24 04:38:20,644 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unroll-4.wvr.c that has 3 procedures, 18 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-24 04:38:20,644 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-24 04:38:20,680 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-24 04:38:20,717 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-24 04:38:20,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-01-24 04:38:20,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-24 04:38:20,719 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) [2025-01-24 04:38:20,721 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 [2025-01-24 04:38:20,776 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-01-24 04:38:20,787 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-01-24 04:38:20,794 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;@6bf99bfa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-24 04:38:20,794 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-01-24 04:38:20,911 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-24 04:38:20,913 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-24 04:38:20,914 INFO L139 ounterexampleChecker]: Examining path program with hash 1813456847, occurence #1 [2025-01-24 04:38:20,914 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-24 04:38:20,914 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-24 04:38:20,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-24 04:38:20,917 INFO L85 PathProgramCache]: Analyzing trace with hash 558932317, now seen corresponding path program 1 times [2025-01-24 04:38:20,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-24 04:38:20,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191153760] [2025-01-24 04:38:20,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-24 04:38:20,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-24 04:38:20,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-24 04:38:20,948 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) [2025-01-24 04:38:20,950 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 [2025-01-24 04:38:21,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-24 04:38:21,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-24 04:38:21,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-24 04:38:21,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-24 04:38:21,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-24 04:38:21,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-24 04:38:21,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-24 04:38:21,116 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-24 04:38:21,116 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-24 04:38:21,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191153760] [2025-01-24 04:38:21,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191153760] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-24 04:38:21,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-24 04:38:21,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-24 04:38:21,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599950503] [2025-01-24 04:38:21,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-24 04:38:21,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-24 04:38:21,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-24 04:38:21,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-24 04:38:21,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-24 04:38:21,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:38:21,135 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-24 04:38:21,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-24 04:38:21,136 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:38:21,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:38:21,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-24 04:38:21,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-24 04:38:21,386 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-24 04:38:21,387 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-24 04:38:21,387 INFO L139 ounterexampleChecker]: Examining path program with hash 1813456847, occurence #2 [2025-01-24 04:38:21,387 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-24 04:38:21,387 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-24 04:38:21,387 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:38:21,388 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 2 [2025-01-24 04:38:21,400 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:38:21,400 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 5 [2025-01-24 04:38:21,400 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:38:21,400 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 10 [2025-01-24 04:38:21,401 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:38:21,401 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 12 [2025-01-24 04:38:21,401 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:38:21,401 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 13 [2025-01-24 04:38:21,401 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:38:21,401 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-24 04:38:21,401 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-24 04:38:21,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-24 04:38:21,402 INFO L85 PathProgramCache]: Analyzing trace with hash 147769395, now seen corresponding path program 1 times [2025-01-24 04:38:21,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-24 04:38:21,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704518688] [2025-01-24 04:38:21,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-24 04:38:21,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-24 04:38:21,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-24 04:38:21,406 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) [2025-01-24 04:38:21,407 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 [2025-01-24 04:38:21,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-24 04:38:21,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-24 04:38:21,461 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-24 04:38:21,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-24 04:38:21,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-24 04:38:21,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-24 04:38:21,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-24 04:38:21,495 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-24 04:38:21,496 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-24 04:38:21,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704518688] [2025-01-24 04:38:21,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704518688] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-24 04:38:21,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-24 04:38:21,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-24 04:38:21,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379122803] [2025-01-24 04:38:21,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-24 04:38:21,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-24 04:38:21,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-24 04:38:21,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-24 04:38:21,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-24 04:38:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:38:21,497 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-24 04:38:21,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-24 04:38:21,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:38:21,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:38:21,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:38:21,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-24 04:38:21,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-24 04:38:21,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-24 04:38:21,768 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-24 04:38:21,768 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-24 04:38:21,769 INFO L139 ounterexampleChecker]: Examining path program with hash 2032607793, occurence #1 [2025-01-24 04:38:21,769 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-24 04:38:21,769 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-24 04:38:21,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-24 04:38:21,769 INFO L85 PathProgramCache]: Analyzing trace with hash 859982832, now seen corresponding path program 1 times [2025-01-24 04:38:21,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-24 04:38:21,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173188773] [2025-01-24 04:38:21,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-24 04:38:21,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-24 04:38:21,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-24 04:38:21,771 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) [2025-01-24 04:38:21,772 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 [2025-01-24 04:38:21,811 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-24 04:38:21,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-24 04:38:21,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-24 04:38:21,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-24 04:38:21,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-24 04:38:21,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-24 04:38:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-24 04:38:21,845 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-24 04:38:21,846 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-24 04:38:21,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173188773] [2025-01-24 04:38:21,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173188773] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-24 04:38:21,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-24 04:38:21,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-24 04:38:21,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986172907] [2025-01-24 04:38:21,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-24 04:38:21,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-24 04:38:21,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-24 04:38:21,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-24 04:38:21,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-24 04:38:21,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:38:21,846 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-24 04:38:21,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-24 04:38:21,846 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:38:21,846 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-24 04:38:21,846 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:38:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:38:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-24 04:38:21,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-24 04:38:21,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-24 04:38:22,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-24 04:38:22,101 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-24 04:38:22,101 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-24 04:38:22,101 INFO L139 ounterexampleChecker]: Examining path program with hash 1440373005, occurence #1 [2025-01-24 04:38:22,101 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-24 04:38:22,101 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-24 04:38:22,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-24 04:38:22,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1776980928, now seen corresponding path program 1 times [2025-01-24 04:38:22,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-24 04:38:22,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805378563] [2025-01-24 04:38:22,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-24 04:38:22,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-24 04:38:22,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-24 04:38:22,103 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) [2025-01-24 04:38:22,104 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 [2025-01-24 04:38:22,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-24 04:38:22,161 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-24 04:38:22,161 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-24 04:38:22,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-24 04:38:22,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-24 04:38:22,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-24 04:38:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-24 04:38:22,181 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-24 04:38:22,181 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-24 04:38:22,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805378563] [2025-01-24 04:38:22,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805378563] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-24 04:38:22,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-24 04:38:22,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-24 04:38:22,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614685609] [2025-01-24 04:38:22,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-24 04:38:22,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-24 04:38:22,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-24 04:38:22,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-24 04:38:22,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-24 04:38:22,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:38:22,182 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-24 04:38:22,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-24 04:38:22,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:38:22,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-24 04:38:22,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-24 04:38:22,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:38:22,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:38:22,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-24 04:38:22,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-24 04:38:22,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:38:22,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-24 04:38:22,427 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 [2025-01-24 04:38:22,427 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-24 04:38:22,427 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-24 04:38:22,427 INFO L139 ounterexampleChecker]: Examining path program with hash 1440373005, occurence #2 [2025-01-24 04:38:22,427 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-24 04:38:22,427 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-24 04:38:22,427 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:38:22,427 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 3 [2025-01-24 04:38:22,427 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:38:22,427 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 6 [2025-01-24 04:38:22,428 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:38:22,428 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 14 [2025-01-24 04:38:22,428 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:38:22,428 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 15 [2025-01-24 04:38:22,428 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:38:22,428 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-24 04:38:22,428 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-24 04:38:22,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-24 04:38:22,428 INFO L85 PathProgramCache]: Analyzing trace with hash -407519059, now seen corresponding path program 1 times [2025-01-24 04:38:22,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-24 04:38:22,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1687283502] [2025-01-24 04:38:22,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-24 04:38:22,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-24 04:38:22,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-24 04:38:22,430 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) [2025-01-24 04:38:22,431 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 [2025-01-24 04:38:22,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-24 04:38:22,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-24 04:38:22,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-24 04:38:22,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-24 04:38:22,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-24 04:38:22,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-24 04:38:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-24 04:38:22,510 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-24 04:38:22,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-24 04:38:22,587 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-24 04:38:22,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687283502] [2025-01-24 04:38:22,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687283502] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-24 04:38:22,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-24 04:38:22,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2025-01-24 04:38:22,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604181189] [2025-01-24 04:38:22,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-24 04:38:22,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-24 04:38:22,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-24 04:38:22,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-24 04:38:22,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-01-24 04:38:22,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:38:22,588 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-24 04:38:22,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-24 04:38:22,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:38:22,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-24 04:38:22,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-24 04:38:22,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:38:22,588 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-24 04:38:22,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:38:22,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-24 04:38:22,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-24 04:38:22,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-24 04:38:22,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-24 04:38:22,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-24 04:38:22,934 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 [2025-01-24 04:38:22,934 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-24 04:38:22,934 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-24 04:38:22,934 INFO L139 ounterexampleChecker]: Examining path program with hash 2032607793, occurence #2 [2025-01-24 04:38:22,934 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-24 04:38:22,934 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-24 04:38:22,934 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:38:22,934 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 3 [2025-01-24 04:38:22,934 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:38:22,934 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 6 [2025-01-24 04:38:22,934 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:38:22,934 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 14 [2025-01-24 04:38:22,934 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:38:22,934 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 16 [2025-01-24 04:38:22,934 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-24 04:38:22,934 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 18 [2025-01-24 04:38:22,934 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-24 04:38:22,934 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-24 04:38:22,934 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-24 04:38:22,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-24 04:38:22,935 INFO L85 PathProgramCache]: Analyzing trace with hash 72525440, now seen corresponding path program 2 times [2025-01-24 04:38:22,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-24 04:38:22,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452251652] [2025-01-24 04:38:22,935 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-24 04:38:22,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-24 04:38:22,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-24 04:38:22,937 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) [2025-01-24 04:38:22,937 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 [2025-01-24 04:38:22,986 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-01-24 04:38:23,010 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-01-24 04:38:23,010 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-24 04:38:23,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-24 04:38:23,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-24 04:38:23,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-24 04:38:23,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-24 04:38:23,317 INFO L349 Elim1Store]: treesize reduction 35, result has 63.9 percent of original size [2025-01-24 04:38:23,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 89 [2025-01-24 04:38:23,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-24 04:38:23,788 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-24 04:38:24,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 155 [2025-01-24 04:38:24,969 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-24 04:38:24,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 13 new quantified variables, introduced 28 case distinctions, treesize of input 2389 treesize of output 2071 Killed by 15