./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-horseshoe.wvr.c --traceabstraction.use.conditional.por.in.concurrent.analysis true --traceabstraction.commutativity.condition.synthesis SUFFICIENT --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ebd41074 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-horseshoe.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 ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d --traceabstraction.use.conditional.por.in.concurrent.analysis true --traceabstraction.commutativity.condition.synthesis SUFFICIENT --- Real Ultimate output --- This is Ultimate 0.3.0-dev-ebd4107-m [2025-01-23 19:49:01,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-23 19:49:01,370 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-01-23 19:49:01,374 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-23 19:49:01,374 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-23 19:49:01,396 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-23 19:49:01,398 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-23 19:49:01,398 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-23 19:49:01,399 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-23 19:49:01,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-23 19:49:01,400 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-23 19:49:01,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-23 19:49:01,400 INFO L153 SettingsManager]: * Use SBE=true [2025-01-23 19:49:01,400 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-23 19:49:01,400 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-23 19:49:01,401 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-23 19:49:01,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-23 19:49:01,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-23 19:49:01,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-23 19:49:01,401 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-23 19:49:01,401 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-23 19:49:01,401 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-23 19:49:01,401 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-23 19:49:01,401 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-23 19:49:01,401 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-23 19:49:01,401 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-23 19:49:01,401 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-23 19:49:01,402 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-23 19:49:01,402 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-23 19:49:01,402 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-23 19:49:01,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-01-23 19:49:01,402 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-23 19:49:01,402 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-23 19:49:01,402 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-23 19:49:01,403 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-01-23 19:49:01,403 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-23 19:49:01,403 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-23 19:49:01,403 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-01-23 19:49:01,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-23 19:49:01,403 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-23 19:49:01,403 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-01-23 19:49:01,403 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-01-23 19:49:01,403 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-01-23 19:49:01,403 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 -> ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use conditional POR in concurrent analysis -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Commutativity condition synthesis -> SUFFICIENT [2025-01-23 19:49:01,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-23 19:49:01,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-23 19:49:01,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-23 19:49:01,659 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-23 19:49:01,659 INFO L274 PluginConnector]: CDTParser initialized [2025-01-23 19:49:01,661 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/weaver/popl20-horseshoe.wvr.c [2025-01-23 19:49:02,757 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/fd91789e8/4eb9b914d86647cc8a70e4df37eae74f/FLAG1e1283a89 [2025-01-23 19:49:02,923 INFO L384 CDTParser]: Found 1 translation units. [2025-01-23 19:49:02,924 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/popl20-horseshoe.wvr.c [2025-01-23 19:49:02,929 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/fd91789e8/4eb9b914d86647cc8a70e4df37eae74f/FLAG1e1283a89 [2025-01-23 19:49:02,943 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/fd91789e8/4eb9b914d86647cc8a70e4df37eae74f [2025-01-23 19:49:02,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-23 19:49:02,947 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-23 19:49:02,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-23 19:49:02,948 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-23 19:49:02,950 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-23 19:49:02,951 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 07:49:02" (1/1) ... [2025-01-23 19:49:02,952 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f90a13a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:49:02, skipping insertion in model container [2025-01-23 19:49:02,952 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 07:49:02" (1/1) ... [2025-01-23 19:49:02,963 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-23 19:49:03,092 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/popl20-horseshoe.wvr.c[3463,3476] [2025-01-23 19:49:03,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-23 19:49:03,107 INFO L200 MainTranslator]: Completed pre-run [2025-01-23 19:49:03,153 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/popl20-horseshoe.wvr.c[3463,3476] [2025-01-23 19:49:03,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-23 19:49:03,171 INFO L204 MainTranslator]: Completed translation [2025-01-23 19:49:03,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:49:03 WrapperNode [2025-01-23 19:49:03,172 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-23 19:49:03,172 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-23 19:49:03,172 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-23 19:49:03,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-23 19:49:03,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:49:03" (1/1) ... [2025-01-23 19:49:03,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:49:03" (1/1) ... [2025-01-23 19:49:03,202 INFO L138 Inliner]: procedures = 24, calls = 40, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 224 [2025-01-23 19:49:03,203 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-23 19:49:03,203 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-23 19:49:03,203 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-23 19:49:03,203 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-23 19:49:03,208 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:49:03" (1/1) ... [2025-01-23 19:49:03,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:49:03" (1/1) ... [2025-01-23 19:49:03,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:49:03" (1/1) ... [2025-01-23 19:49:03,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:49:03" (1/1) ... [2025-01-23 19:49:03,215 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:49:03" (1/1) ... [2025-01-23 19:49:03,215 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:49:03" (1/1) ... [2025-01-23 19:49:03,221 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:49:03" (1/1) ... [2025-01-23 19:49:03,223 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:49:03" (1/1) ... [2025-01-23 19:49:03,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:49:03" (1/1) ... [2025-01-23 19:49:03,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-23 19:49:03,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-23 19:49:03,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-23 19:49:03,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-23 19:49:03,230 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:49:03" (1/1) ... [2025-01-23 19:49:03,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-01-23 19:49:03,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:49:03,252 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2025-01-23 19:49:03,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2025-01-23 19:49:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-23 19:49:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-23 19:49:03,271 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-23 19:49:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-23 19:49:03,271 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-23 19:49:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-23 19:49:03,271 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-23 19:49:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-23 19:49:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-01-23 19:49:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-23 19:49:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-23 19:49:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-23 19:49:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-23 19:49:03,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-23 19:49:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-01-23 19:49:03,273 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-23 19:49:03,348 INFO L234 CfgBuilder]: Building ICFG [2025-01-23 19:49:03,349 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-23 19:49:03,594 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-23 19:49:03,594 INFO L283 CfgBuilder]: Performing block encoding [2025-01-23 19:49:03,800 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-23 19:49:03,800 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-01-23 19:49:03,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 07:49:03 BoogieIcfgContainer [2025-01-23 19:49:03,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-23 19:49:03,802 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-23 19:49:03,802 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-23 19:49:03,805 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-23 19:49:03,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 07:49:02" (1/3) ... [2025-01-23 19:49:03,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620a7d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 07:49:03, skipping insertion in model container [2025-01-23 19:49:03,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:49:03" (2/3) ... [2025-01-23 19:49:03,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620a7d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 07:49:03, skipping insertion in model container [2025-01-23 19:49:03,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 07:49:03" (3/3) ... [2025-01-23 19:49:03,808 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-horseshoe.wvr.c [2025-01-23 19:49:03,817 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-23 19:49:03,819 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-horseshoe.wvr.c that has 4 procedures, 36 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2025-01-23 19:49:03,819 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-23 19:49:03,855 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-23 19:49:03,884 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-23 19:49:03,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-01-23 19:49:03,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:49:03,887 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-01-23 19:49:03,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-01-23 19:49:03,943 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-01-23 19:49:03,955 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-01-23 19:49:03,961 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;@34c0296e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-23 19:49:03,961 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-23 19:49:04,264 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:49:04,265 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:49:04,266 INFO L139 ounterexampleChecker]: Examining path program with hash 1445216983, occurence #1 [2025-01-23 19:49:04,267 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 19:49:04,267 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:49:04,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:49:04,270 INFO L85 PathProgramCache]: Analyzing trace with hash -247992129, now seen corresponding path program 1 times [2025-01-23 19:49:04,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:49:04,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165215899] [2025-01-23 19:49:04,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:49:04,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:49:04,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-23 19:49:04,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-23 19:49:04,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:49:04,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:49:04,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:49:04,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165215899] [2025-01-23 19:49:04,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165215899] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-23 19:49:04,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-23 19:49:04,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-23 19:49:04,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125222257] [2025-01-23 19:49:04,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-23 19:49:04,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-23 19:49:04,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:49:04,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-23 19:49:04,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-23 19:49:04,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:04,468 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:49:04,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:49:04,470 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:04,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:04,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-23 19:49:04,549 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:49:04,550 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:49:04,550 INFO L139 ounterexampleChecker]: Examining path program with hash -1962515200, occurence #1 [2025-01-23 19:49:04,550 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 19:49:04,550 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:49:04,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:49:04,551 INFO L85 PathProgramCache]: Analyzing trace with hash -414010562, now seen corresponding path program 1 times [2025-01-23 19:49:04,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:49:04,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487264028] [2025-01-23 19:49:04,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:49:04,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:49:04,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-23 19:49:04,592 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-23 19:49:04,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:49:04,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:49:04,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:49:04,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487264028] [2025-01-23 19:49:04,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487264028] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-23 19:49:04,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-23 19:49:04,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-23 19:49:04,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325609037] [2025-01-23 19:49:04,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-23 19:49:04,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-23 19:49:04,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:49:04,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-23 19:49:04,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-23 19:49:04,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:04,769 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:49:04,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:49:04,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:04,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:04,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:04,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:04,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-23 19:49:04,848 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:49:04,848 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:49:04,848 INFO L139 ounterexampleChecker]: Examining path program with hash -1962515200, occurence #2 [2025-01-23 19:49:04,848 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:49:04,849 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:49:04,849 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:04,849 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-01-23 19:49:04,861 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:04,861 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 7 [2025-01-23 19:49:04,861 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:04,861 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 10 [2025-01-23 19:49:04,861 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:04,862 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 19 [2025-01-23 19:49:04,862 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:04,862 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 23 [2025-01-23 19:49:04,862 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:04,862 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 28 [2025-01-23 19:49:04,862 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:04,862 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:49:04,862 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:49:04,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:49:04,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1293882722, now seen corresponding path program 1 times [2025-01-23 19:49:04,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:49:04,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478111225] [2025-01-23 19:49:04,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:49:04,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:49:04,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-23 19:49:04,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-23 19:49:04,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:49:04,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-23 19:49:05,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:49:05,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478111225] [2025-01-23 19:49:05,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478111225] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-23 19:49:05,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-23 19:49:05,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-23 19:49:05,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448668838] [2025-01-23 19:49:05,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-23 19:49:05,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-23 19:49:05,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:49:05,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-23 19:49:05,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-23 19:49:05,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:05,035 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:49:05,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:49:05,035 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:05,035 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:05,035 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:05,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:05,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:05,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:05,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-23 19:49:05,105 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:49:05,105 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:49:05,106 INFO L139 ounterexampleChecker]: Examining path program with hash -1962515200, occurence #3 [2025-01-23 19:49:05,106 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:49:05,106 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:49:05,106 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:05,106 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 5 [2025-01-23 19:49:05,106 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:05,106 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2025-01-23 19:49:05,106 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:05,106 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 11 [2025-01-23 19:49:05,106 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:05,107 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 20 [2025-01-23 19:49:05,107 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:05,107 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 24 [2025-01-23 19:49:05,107 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:05,107 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 29 [2025-01-23 19:49:05,107 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:05,107 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:49:05,107 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:49:05,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:49:05,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1390463007, now seen corresponding path program 1 times [2025-01-23 19:49:05,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:49:05,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720647482] [2025-01-23 19:49:05,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:49:05,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:49:05,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-23 19:49:05,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-23 19:49:05,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:49:05,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:05,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-23 19:49:05,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:49:05,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720647482] [2025-01-23 19:49:05,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720647482] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:49:05,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232111841] [2025-01-23 19:49:05,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:49:05,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:49:05,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:49:05,274 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:49:05,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-23 19:49:05,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-23 19:49:05,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-23 19:49:05,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:49:05,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:05,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-23 19:49:05,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:49:05,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-23 19:49:05,452 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:49:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-23 19:49:05,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232111841] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:49:05,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:49:05,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-01-23 19:49:05,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040657851] [2025-01-23 19:49:05,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:49:05,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-23 19:49:05,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:49:05,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-23 19:49:05,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-23 19:49:05,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:05,586 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:49:05,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:49:05,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:05,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:05,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:05,587 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:49:05,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-23 19:49:05,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:49:05,883 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:49:05,884 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:49:05,884 INFO L139 ounterexampleChecker]: Examining path program with hash -1962515200, occurence #4 [2025-01-23 19:49:05,884 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:49:05,884 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:49:05,884 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:05,885 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 6 [2025-01-23 19:49:05,885 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:05,885 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 9 [2025-01-23 19:49:05,885 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:05,885 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 12 [2025-01-23 19:49:05,885 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:05,885 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 21 [2025-01-23 19:49:05,885 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:05,885 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 25 [2025-01-23 19:49:05,885 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:05,885 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 30 [2025-01-23 19:49:05,886 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:05,886 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:49:05,886 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:49:05,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:49:05,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1998401859, now seen corresponding path program 2 times [2025-01-23 19:49:05,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:49:05,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757197804] [2025-01-23 19:49:05,887 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-23 19:49:05,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:49:05,899 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-01-23 19:49:05,941 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 32 of 35 statements. [2025-01-23 19:49:05,941 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-23 19:49:05,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:06,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-23 19:49:06,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:49:06,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757197804] [2025-01-23 19:49:06,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757197804] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-23 19:49:06,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-23 19:49:06,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-23 19:49:06,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713746380] [2025-01-23 19:49:06,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-23 19:49:06,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-23 19:49:06,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:49:06,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-23 19:49:06,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-23 19:49:06,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:06,016 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:49:06,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 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) [2025-01-23 19:49:06,017 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:06,017 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:06,017 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:06,017 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:49:06,017 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:06,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:06,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:06,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:06,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:49:06,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:06,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-23 19:49:06,111 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:49:06,111 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:49:06,111 INFO L139 ounterexampleChecker]: Examining path program with hash 507787031, occurence #1 [2025-01-23 19:49:06,111 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 19:49:06,111 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:49:06,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:49:06,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1833703970, now seen corresponding path program 1 times [2025-01-23 19:49:06,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:49:06,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350411903] [2025-01-23 19:49:06,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:49:06,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:49:06,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-01-23 19:49:06,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-01-23 19:49:06,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:49:06,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-23 19:49:06,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:49:06,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350411903] [2025-01-23 19:49:06,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350411903] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:49:06,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729105548] [2025-01-23 19:49:06,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:49:06,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:49:06,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:49:06,324 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:49:06,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-23 19:49:06,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-01-23 19:49:06,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-01-23 19:49:06,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:49:06,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:06,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-23 19:49:06,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:49:06,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-23 19:49:06,498 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:49:06,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-23 19:49:06,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729105548] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:49:06,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:49:06,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2025-01-23 19:49:06,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404339736] [2025-01-23 19:49:06,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:49:06,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-23 19:49:06,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:49:06,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-23 19:49:06,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2025-01-23 19:49:06,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:06,613 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:49:06,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 15 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:49:06,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:06,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:06,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:06,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:49:06,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:06,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:06,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:06,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:06,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:49:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-23 19:49:06,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-23 19:49:07,039 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 [2025-01-23 19:49:07,039 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:49:07,039 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:49:07,039 INFO L139 ounterexampleChecker]: Examining path program with hash 507787031, occurence #2 [2025-01-23 19:49:07,039 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:49:07,039 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:49:07,039 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:07,039 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2025-01-23 19:49:07,039 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:07,039 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 11 [2025-01-23 19:49:07,039 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:07,039 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 14 [2025-01-23 19:49:07,039 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:07,040 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 26 [2025-01-23 19:49:07,040 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:07,040 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 34 [2025-01-23 19:49:07,040 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:07,040 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 39 [2025-01-23 19:49:07,040 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:07,040 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:49:07,040 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:49:07,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:49:07,040 INFO L85 PathProgramCache]: Analyzing trace with hash -399218241, now seen corresponding path program 2 times [2025-01-23 19:49:07,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:49:07,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87401619] [2025-01-23 19:49:07,040 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-23 19:49:07,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:49:07,051 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-01-23 19:49:07,069 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 39 of 44 statements. [2025-01-23 19:49:07,069 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-23 19:49:07,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:07,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-23 19:49:07,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:49:07,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87401619] [2025-01-23 19:49:07,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87401619] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-23 19:49:07,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-23 19:49:07,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-23 19:49:07,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988251911] [2025-01-23 19:49:07,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-23 19:49:07,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-23 19:49:07,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:49:07,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-23 19:49:07,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-23 19:49:07,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:07,215 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:49:07,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:49:07,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:07,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:07,217 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:07,217 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:49:07,217 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:07,217 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2025-01-23 19:49:07,217 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:07,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:49:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-23 19:49:07,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:49:07,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-23 19:49:07,385 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:49:07,385 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:49:07,385 INFO L139 ounterexampleChecker]: Examining path program with hash 1365929009, occurence #1 [2025-01-23 19:49:07,385 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 19:49:07,385 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:49:07,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:49:07,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1383925722, now seen corresponding path program 3 times [2025-01-23 19:49:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:49:07,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590892017] [2025-01-23 19:49:07,389 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-23 19:49:07,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:49:07,399 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 61 statements into 3 equivalence classes. [2025-01-23 19:49:07,434 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 39 of 61 statements. [2025-01-23 19:49:07,434 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-23 19:49:07,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-23 19:49:07,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:49:07,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590892017] [2025-01-23 19:49:07,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590892017] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-23 19:49:07,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-23 19:49:07,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-23 19:49:07,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747679504] [2025-01-23 19:49:07,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-23 19:49:07,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-23 19:49:07,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:49:07,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-23 19:49:07,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-01-23 19:49:07,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:07,690 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:49:07,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:49:07,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:07,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:07,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:07,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:49:07,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:07,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2025-01-23 19:49:07,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:49:07,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:49:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-23 19:49:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:49:07,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:49:07,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-23 19:49:07,852 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:49:07,852 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:49:07,852 INFO L139 ounterexampleChecker]: Examining path program with hash 1365929009, occurence #2 [2025-01-23 19:49:07,852 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:49:07,852 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:49:07,852 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:07,852 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2025-01-23 19:49:07,852 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:07,852 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 11 [2025-01-23 19:49:07,852 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:07,853 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 14 [2025-01-23 19:49:07,853 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:07,853 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 36 [2025-01-23 19:49:07,853 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:07,853 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 40 [2025-01-23 19:49:07,853 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:07,853 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 43 [2025-01-23 19:49:07,853 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:07,853 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 45 [2025-01-23 19:49:07,932 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 12 treesize of output 4 [2025-01-23 19:49:08,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:49:08,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1455534730, now seen corresponding path program 1 times [2025-01-23 19:49:08,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SMTINTERPOL [2025-01-23 19:49:08,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060304189] [2025-01-23 19:49:08,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:49:08,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:49:08,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-01-23 19:49:08,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-01-23 19:49:08,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:49:08,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-23 19:49:08,125 INFO L136 FreeRefinementEngine]: Strategy SMTINTERPOL found an infeasible trace [2025-01-23 19:49:08,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060304189] [2025-01-23 19:49:08,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060304189] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-23 19:49:08,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-23 19:49:08,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-23 19:49:08,126 INFO L172 ounterexampleChecker]: Successfully proved commutativity at non-minimality point 45. Constructing proof automaton... [2025-01-23 19:49:08,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-23 19:49:08,126 INFO L311 artialOrderCegarLoop]: Commutativity proof succeeded, skipping feasibility check. [2025-01-23 19:49:08,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-23 19:49:08,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SMTINTERPOL [2025-01-23 19:49:08,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-23 19:49:08,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-23 19:49:08,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:08,127 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:49:08,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:49:08,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:08,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:08,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:08,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:49:08,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:08,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2025-01-23 19:49:08,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:49:08,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:49:08,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:49:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-23 19:49:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:49:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:49:08,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:08,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-23 19:49:08,312 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:49:08,312 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:49:08,312 INFO L139 ounterexampleChecker]: Examining path program with hash -966203054, occurence #1 [2025-01-23 19:49:08,312 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 19:49:08,313 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:49:08,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:49:08,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1248125894, now seen corresponding path program 1 times [2025-01-23 19:49:08,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:49:08,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251859495] [2025-01-23 19:49:08,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:49:08,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:49:08,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-23 19:49:08,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-23 19:49:08,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:49:08,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:08,466 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-23 19:49:08,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:49:08,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251859495] [2025-01-23 19:49:08,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251859495] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:49:08,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5572121] [2025-01-23 19:49:08,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:49:08,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:49:08,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:49:08,468 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:49:08,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-23 19:49:08,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-01-23 19:49:08,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-01-23 19:49:08,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:49:08,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:08,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-23 19:49:08,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:49:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-23 19:49:08,695 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:49:08,836 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-23 19:49:08,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5572121] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:49:08,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:49:08,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2025-01-23 19:49:08,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597578683] [2025-01-23 19:49:08,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:49:08,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-23 19:49:08,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:49:08,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-23 19:49:08,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2025-01-23 19:49:08,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:08,837 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:49:08,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:49:08,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:08,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:08,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:08,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:49:08,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:08,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2025-01-23 19:49:08,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:49:08,838 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:49:08,838 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:08,838 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:09,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:09,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:09,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:09,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:49:09,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:09,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-23 19:49:09,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:49:09,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:49:09,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:09,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:49:09,014 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 [2025-01-23 19:49:09,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:49:09,209 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:49:09,209 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:49:09,209 INFO L139 ounterexampleChecker]: Examining path program with hash -966203054, occurence #2 [2025-01-23 19:49:09,209 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:49:09,209 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:49:09,209 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:09,209 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 9 [2025-01-23 19:49:09,209 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:09,209 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 12 [2025-01-23 19:49:09,209 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:09,209 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 15 [2025-01-23 19:49:09,209 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:09,209 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 37 [2025-01-23 19:49:09,209 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:09,209 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 46 [2025-01-23 19:49:09,209 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:09,209 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 48 [2025-01-23 19:49:09,209 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:09,209 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:49:09,209 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:49:09,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:49:09,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1344238089, now seen corresponding path program 2 times [2025-01-23 19:49:09,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:49:09,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360925384] [2025-01-23 19:49:09,210 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-23 19:49:09,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:49:09,219 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 52 statements into 2 equivalence classes. [2025-01-23 19:49:09,248 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 52 of 52 statements. [2025-01-23 19:49:09,248 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-23 19:49:09,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:49:10,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:49:10,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360925384] [2025-01-23 19:49:10,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360925384] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:49:10,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044703208] [2025-01-23 19:49:10,711 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-23 19:49:10,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:49:10,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:49:10,713 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:49:10,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-23 19:49:10,766 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 52 statements into 2 equivalence classes. [2025-01-23 19:49:10,871 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 52 of 52 statements. [2025-01-23 19:49:10,871 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-23 19:49:10,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:10,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-23 19:49:10,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:49:11,970 INFO L349 Elim1Store]: treesize reduction 41, result has 73.0 percent of original size [2025-01-23 19:49:11,970 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 5 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 125 [2025-01-23 19:49:12,396 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:49:12,396 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:49:13,012 INFO L349 Elim1Store]: treesize reduction 9, result has 93.7 percent of original size [2025-01-23 19:49:13,012 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 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 149 [2025-01-23 19:49:14,156 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:49:14,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044703208] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:49:14,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:49:14,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 59 [2025-01-23 19:49:14,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145421424] [2025-01-23 19:49:14,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:49:14,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2025-01-23 19:49:14,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:49:14,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2025-01-23 19:49:14,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=3201, Unknown=0, NotChecked=0, Total=3540 [2025-01-23 19:49:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:14,158 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:49:14,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.433333333333333) internal successors, (146), 59 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:49:14,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:14,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:14,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:14,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:49:14,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:14,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2025-01-23 19:49:14,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:49:14,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:49:14,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:14,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:49:14,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:49:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-23 19:49:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:49:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:49:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:49:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:49:15,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-23 19:49:15,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:49:15,888 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:49:15,888 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:49:15,888 INFO L139 ounterexampleChecker]: Examining path program with hash -966203054, occurence #3 [2025-01-23 19:49:15,888 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:49:15,888 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:49:15,888 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:15,888 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 11 [2025-01-23 19:49:15,888 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:15,888 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 14 [2025-01-23 19:49:15,888 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:15,888 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 17 [2025-01-23 19:49:15,888 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:15,888 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 39 [2025-01-23 19:49:15,888 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:15,888 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 48 [2025-01-23 19:49:15,888 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:49:15,889 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 50 [2025-01-23 19:49:15,889 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:49:15,889 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:49:15,889 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:49:15,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:49:15,889 INFO L85 PathProgramCache]: Analyzing trace with hash 421368439, now seen corresponding path program 3 times [2025-01-23 19:49:15,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:49:15,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765861153] [2025-01-23 19:49:15,889 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-23 19:49:15,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:49:15,898 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 54 statements into 4 equivalence classes. [2025-01-23 19:49:15,928 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 50 of 54 statements. [2025-01-23 19:49:15,928 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-23 19:49:15,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-23 19:49:16,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:49:16,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765861153] [2025-01-23 19:49:16,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765861153] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:49:16,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38898776] [2025-01-23 19:49:16,211 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-23 19:49:16,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:49:16,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:49:16,213 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:49:16,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-23 19:49:16,269 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 54 statements into 4 equivalence classes. [2025-01-23 19:49:16,300 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 50 of 54 statements. [2025-01-23 19:49:16,301 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-23 19:49:16,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:16,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-23 19:49:16,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:49:16,472 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-23 19:49:16,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2025-01-23 19:49:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-01-23 19:49:16,485 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:49:16,624 INFO L349 Elim1Store]: treesize reduction 4, result has 95.7 percent of original size [2025-01-23 19:49:16,624 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 101 [2025-01-23 19:49:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-23 19:49:16,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38898776] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:49:16,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:49:16,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 23 [2025-01-23 19:49:16,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110514907] [2025-01-23 19:49:16,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:49:16,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-23 19:49:16,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:49:16,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-23 19:49:16,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2025-01-23 19:49:16,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:16,993 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:49:16,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:49:16,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:16,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:16,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:16,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:49:16,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:16,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2025-01-23 19:49:16,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:49:16,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:49:16,993 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:16,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:49:16,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:49:16,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:17,294 WARN L331 ript$VariableManager]: TermVariable v_~q1_back~0_155 not constructed by VariableManager. Cannot ensure absence of name clashes. [2025-01-23 19:49:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:49:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:49:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:49:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-23 19:49:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:49:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:49:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:49:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:49:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-23 19:49:17,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-23 19:49:17,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-23 19:49:17,836 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,SelfDestructingSolverStorable11 [2025-01-23 19:49:17,836 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:49:17,836 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:49:17,837 INFO L139 ounterexampleChecker]: Examining path program with hash 1663893938, occurence #1 [2025-01-23 19:49:17,837 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 19:49:17,838 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:49:17,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:49:17,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1530901866, now seen corresponding path program 4 times [2025-01-23 19:49:17,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:49:17,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991819101] [2025-01-23 19:49:17,838 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-23 19:49:17,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:49:17,847 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 57 statements into 2 equivalence classes. [2025-01-23 19:49:17,901 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-01-23 19:49:17,901 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-23 19:49:17,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:20,495 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:49:20,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:49:20,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991819101] [2025-01-23 19:49:20,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991819101] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:49:20,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454266512] [2025-01-23 19:49:20,495 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-23 19:49:20,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:49:20,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:49:20,498 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:49:20,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-23 19:49:20,546 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 57 statements into 2 equivalence classes. [2025-01-23 19:49:20,575 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-01-23 19:49:20,575 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-23 19:49:20,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:49:20,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 86 conjuncts are in the unsatisfiable core [2025-01-23 19:49:20,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:49:20,896 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 23 treesize of output 1 [2025-01-23 19:49:22,734 INFO L349 Elim1Store]: treesize reduction 184, result has 33.6 percent of original size [2025-01-23 19:49:22,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 84 treesize of output 116 [2025-01-23 19:49:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-23 19:49:22,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:49:25,750 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-23 19:49:25,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 562 treesize of output 530 [2025-01-23 19:49:25,778 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-23 19:49:25,778 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-23 19:49:25,884 INFO L349 Elim1Store]: treesize reduction 5, result has 94.1 percent of original size [2025-01-23 19:49:25,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 3293 treesize of output 2093 [2025-01-23 19:49:28,779 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-23 19:49:40,472 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2025-01-23 19:50:03,930 WARN L672 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2025-01-23 19:50:25,143 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2025-01-23 19:50:34,148 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2025-01-23 19:50:47,792 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-23 19:50:58,450 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2025-01-23 19:51:02,517 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2025-01-23 19:51:20,185 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-23 19:51:26,613 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-23 19:51:36,731 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-23 19:51:40,258 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-23 19:51:43,311 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2025-01-23 19:51:57,484 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-23 19:52:12,633 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-23 19:52:47,478 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-23 19:52:53,008 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-23 19:52:57,535 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2025-01-23 19:53:29,953 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-23 19:53:57,418 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-23 19:54:20,604 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-23 19:54:45,533 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-23 19:54:55,690 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-23 19:55:06,617 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2025-01-23 19:55:25,292 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2025-01-23 19:55:46,616 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2025-01-23 19:56:25,051 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-23 19:56:33,524 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2025-01-23 19:57:00,298 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2025-01-23 19:57:25,952 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2025-01-23 19:58:24,784 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2025-01-23 19:58:46,686 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") [2025-01-23 19:58:46,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2025-01-23 19:58:46,687 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2025-01-23 19:58:46,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-23 19:58:46,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:58:46,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-01-23 19:58:46,895 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$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$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) ... 79 more [2025-01-23 19:58:46,900 INFO L158 Benchmark]: Toolchain (without parser) took 583953.72ms. Allocated memory was 117.4MB in the beginning and 1.1GB in the end (delta: 1.0GB). Free memory was 92.4MB in the beginning and 572.9MB in the end (delta: -480.5MB). Peak memory consumption was 709.4MB. Max. memory is 16.1GB. [2025-01-23 19:58:46,900 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory is still 60.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-23 19:58:46,900 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.58ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 78.2MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-23 19:58:46,900 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.44ms. Allocated memory is still 117.4MB. Free memory was 78.2MB in the beginning and 76.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-23 19:58:46,901 INFO L158 Benchmark]: Boogie Preprocessor took 21.43ms. Allocated memory is still 117.4MB. Free memory was 76.1MB in the beginning and 74.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-23 19:58:46,901 INFO L158 Benchmark]: RCFGBuilder took 575.69ms. Allocated memory is still 117.4MB. Free memory was 74.7MB in the beginning and 65.7MB in the end (delta: 9.0MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2025-01-23 19:58:46,901 INFO L158 Benchmark]: TraceAbstraction took 583097.35ms. Allocated memory was 117.4MB in the beginning and 1.1GB in the end (delta: 1.0GB). Free memory was 64.9MB in the beginning and 572.9MB in the end (delta: -508.0MB). Peak memory consumption was 679.3MB. Max. memory is 16.1GB. [2025-01-23 19:58:46,902 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory is still 60.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.58ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 78.2MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.44ms. Allocated memory is still 117.4MB. Free memory was 78.2MB in the beginning and 76.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.43ms. Allocated memory is still 117.4MB. Free memory was 76.1MB in the beginning and 74.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 575.69ms. Allocated memory is still 117.4MB. Free memory was 74.7MB in the beginning and 65.7MB in the end (delta: 9.0MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. * TraceAbstraction took 583097.35ms. Allocated memory was 117.4MB in the beginning and 1.1GB in the end (delta: 1.0GB). Free memory was 64.9MB in the beginning and 572.9MB in the end (delta: -508.0MB). Peak memory consumption was 679.3MB. 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/popl20-horseshoe.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 ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d --traceabstraction.use.conditional.por.in.concurrent.analysis true --traceabstraction.commutativity.condition.synthesis SUFFICIENT --- Real Ultimate output --- This is Ultimate 0.3.0-dev-ebd4107-m [2025-01-23 19:58:48,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-23 19:58:48,626 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf [2025-01-23 19:58:48,631 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-23 19:58:48,631 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-23 19:58:48,654 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-23 19:58:48,655 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-23 19:58:48,655 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-23 19:58:48,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-23 19:58:48,655 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-23 19:58:48,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-23 19:58:48,656 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-23 19:58:48,656 INFO L153 SettingsManager]: * Use SBE=true [2025-01-23 19:58:48,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-23 19:58:48,657 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-23 19:58:48,657 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-23 19:58:48,657 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-23 19:58:48,657 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-23 19:58:48,657 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-23 19:58:48,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-23 19:58:48,657 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-23 19:58:48,657 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-23 19:58:48,657 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-23 19:58:48,657 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-23 19:58:48,658 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-23 19:58:48,658 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-23 19:58:48,658 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-23 19:58:48,658 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-23 19:58:48,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-23 19:58:48,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-23 19:58:48,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-23 19:58:48,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-01-23 19:58:48,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-23 19:58:48,659 INFO L153 SettingsManager]: * Refinement strategy for commutativity condition synthesis=FOX [2025-01-23 19:58:48,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-23 19:58:48,659 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-23 19:58:48,659 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-01-23 19:58:48,659 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-23 19:58:48,659 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-23 19:58:48,659 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-01-23 19:58:48,659 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-23 19:58:48,660 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-23 19:58:48,660 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-01-23 19:58:48,660 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-01-23 19:58:48,660 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-01-23 19:58:48,660 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 -> ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use conditional POR in concurrent analysis -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Commutativity condition synthesis -> SUFFICIENT [2025-01-23 19:58:48,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-23 19:58:48,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-23 19:58:48,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-23 19:58:48,930 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-23 19:58:48,930 INFO L274 PluginConnector]: CDTParser initialized [2025-01-23 19:58:48,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/weaver/popl20-horseshoe.wvr.c [2025-01-23 19:58:50,122 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/3d5a3f99b/4541aab32a854777a14fad04144d2e13/FLAG5de84a0a0 [2025-01-23 19:58:50,277 INFO L384 CDTParser]: Found 1 translation units. [2025-01-23 19:58:50,281 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/popl20-horseshoe.wvr.c [2025-01-23 19:58:50,288 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/3d5a3f99b/4541aab32a854777a14fad04144d2e13/FLAG5de84a0a0 [2025-01-23 19:58:50,306 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/3d5a3f99b/4541aab32a854777a14fad04144d2e13 [2025-01-23 19:58:50,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-23 19:58:50,309 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-23 19:58:50,310 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-23 19:58:50,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-23 19:58:50,313 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-23 19:58:50,314 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 07:58:50" (1/1) ... [2025-01-23 19:58:50,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1605013a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:58:50, skipping insertion in model container [2025-01-23 19:58:50,315 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 07:58:50" (1/1) ... [2025-01-23 19:58:50,330 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-23 19:58:50,476 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/popl20-horseshoe.wvr.c[3463,3476] [2025-01-23 19:58:50,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-23 19:58:50,501 INFO L200 MainTranslator]: Completed pre-run [2025-01-23 19:58:50,543 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/popl20-horseshoe.wvr.c[3463,3476] [2025-01-23 19:58:50,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-23 19:58:50,560 INFO L204 MainTranslator]: Completed translation [2025-01-23 19:58:50,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:58:50 WrapperNode [2025-01-23 19:58:50,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-23 19:58:50,561 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-23 19:58:50,561 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-23 19:58:50,561 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-23 19:58:50,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:58:50" (1/1) ... [2025-01-23 19:58:50,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:58:50" (1/1) ... [2025-01-23 19:58:50,594 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 217 [2025-01-23 19:58:50,597 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-23 19:58:50,598 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-23 19:58:50,598 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-23 19:58:50,598 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-23 19:58:50,603 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:58:50" (1/1) ... [2025-01-23 19:58:50,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:58:50" (1/1) ... [2025-01-23 19:58:50,606 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:58:50" (1/1) ... [2025-01-23 19:58:50,606 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:58:50" (1/1) ... [2025-01-23 19:58:50,612 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:58:50" (1/1) ... [2025-01-23 19:58:50,613 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:58:50" (1/1) ... [2025-01-23 19:58:50,616 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:58:50" (1/1) ... [2025-01-23 19:58:50,618 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:58:50" (1/1) ... [2025-01-23 19:58:50,619 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:58:50" (1/1) ... [2025-01-23 19:58:50,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-23 19:58:50,621 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-23 19:58:50,621 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-23 19:58:50,622 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-23 19:58:50,622 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:58:50" (1/1) ... [2025-01-23 19:58:50,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-01-23 19:58:50,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:58:50,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2025-01-23 19:58:50,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2025-01-23 19:58:50,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-23 19:58:50,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2025-01-23 19:58:50,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2025-01-23 19:58:50,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-23 19:58:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-23 19:58:50,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-23 19:58:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-23 19:58:50,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-23 19:58:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-23 19:58:50,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-23 19:58:50,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-23 19:58:50,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-23 19:58:50,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-23 19:58:50,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-23 19:58:50,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2025-01-23 19:58:50,671 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-23 19:58:50,765 INFO L234 CfgBuilder]: Building ICFG [2025-01-23 19:58:50,766 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-23 19:58:51,130 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-23 19:58:51,131 INFO L283 CfgBuilder]: Performing block encoding [2025-01-23 19:58:51,335 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-23 19:58:51,335 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-01-23 19:58:51,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 07:58:51 BoogieIcfgContainer [2025-01-23 19:58:51,335 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-23 19:58:51,336 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-23 19:58:51,336 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-23 19:58:51,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-23 19:58:51,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 07:58:50" (1/3) ... [2025-01-23 19:58:51,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d03c2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 07:58:51, skipping insertion in model container [2025-01-23 19:58:51,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:58:50" (2/3) ... [2025-01-23 19:58:51,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d03c2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 07:58:51, skipping insertion in model container [2025-01-23 19:58:51,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 07:58:51" (3/3) ... [2025-01-23 19:58:51,342 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-horseshoe.wvr.c [2025-01-23 19:58:51,355 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-23 19:58:51,356 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-horseshoe.wvr.c that has 4 procedures, 36 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2025-01-23 19:58:51,356 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-23 19:58:51,402 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-23 19:58:51,443 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-23 19:58:51,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-01-23 19:58:51,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:58:51,449 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-01-23 19:58:51,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-01-23 19:58:51,524 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-01-23 19:58:51,536 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-01-23 19:58:51,541 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;@24b1d184, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-23 19:58:51,542 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-23 19:58:52,017 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:58:52,018 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:58:52,018 INFO L139 ounterexampleChecker]: Examining path program with hash 1638946580, occurence #1 [2025-01-23 19:58:52,018 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 19:58:52,018 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:58:52,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:58:52,022 INFO L85 PathProgramCache]: Analyzing trace with hash -591527047, now seen corresponding path program 1 times [2025-01-23 19:58:52,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-23 19:58:52,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191647699] [2025-01-23 19:58:52,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:58:52,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:58:52,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:58:52,034 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:58:52,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-23 19:58:52,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-23 19:58:52,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-23 19:58:52,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:58:52,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:58:52,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-23 19:58:52,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:58:52,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:58:52,147 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-23 19:58:52,148 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-23 19:58:52,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191647699] [2025-01-23 19:58:52,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191647699] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-23 19:58:52,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-23 19:58:52,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-23 19:58:52,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393725590] [2025-01-23 19:58:52,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-23 19:58:52,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-23 19:58:52,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-23 19:58:52,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-23 19:58:52,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-23 19:58:52,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:58:52,169 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:58:52,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:58:52,170 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:58:52,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:58:52,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-23 19:58:52,507 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 [2025-01-23 19:58:52,507 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:58:52,507 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:58:52,507 INFO L139 ounterexampleChecker]: Examining path program with hash 238145862, occurence #1 [2025-01-23 19:58:52,507 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 19:58:52,507 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:58:52,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:58:52,508 INFO L85 PathProgramCache]: Analyzing trace with hash 862021686, now seen corresponding path program 1 times [2025-01-23 19:58:52,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-23 19:58:52,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968871172] [2025-01-23 19:58:52,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:58:52,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:58:52,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:58:52,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:58:52,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-23 19:58:52,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-23 19:58:52,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-23 19:58:52,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:58:52,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:58:52,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-23 19:58:52,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:58:52,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:58:52,670 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-23 19:58:52,670 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-23 19:58:52,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968871172] [2025-01-23 19:58:52,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968871172] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-23 19:58:52,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-23 19:58:52,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-23 19:58:52,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604693436] [2025-01-23 19:58:52,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-23 19:58:52,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-23 19:58:52,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-23 19:58:52,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-23 19:58:52,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-23 19:58:52,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:58:52,672 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:58:52,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:58:52,672 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:58:52,672 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:58:52,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:58:52,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:58:52,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-23 19:58:52,973 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 [2025-01-23 19:58:52,973 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:58:52,973 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:58:52,973 INFO L139 ounterexampleChecker]: Examining path program with hash 238145862, occurence #2 [2025-01-23 19:58:52,973 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:58:52,973 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:58:52,974 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:52,974 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-01-23 19:58:52,989 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:58:52,989 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 7 [2025-01-23 19:58:52,989 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:58:52,989 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 10 [2025-01-23 19:58:52,989 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:58:52,989 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 19 [2025-01-23 19:58:52,989 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:52,989 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 23 [2025-01-23 19:58:52,990 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:52,991 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 28 [2025-01-23 19:58:52,991 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:58:52,991 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:58:52,991 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:58:52,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:58:52,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1218346420, now seen corresponding path program 1 times [2025-01-23 19:58:52,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-23 19:58:52,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [176545780] [2025-01-23 19:58:52,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:58:52,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:58:52,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:58:52,996 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:58:53,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-23 19:58:53,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-23 19:58:53,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-23 19:58:53,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:58:53,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:58:53,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-23 19:58:53,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:58:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-23 19:58:53,183 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-23 19:58:53,183 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-23 19:58:53,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176545780] [2025-01-23 19:58:53,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176545780] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-23 19:58:53,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-23 19:58:53,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-23 19:58:53,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229061274] [2025-01-23 19:58:53,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-23 19:58:53,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-23 19:58:53,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-23 19:58:53,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-23 19:58:53,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-23 19:58:53,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:58:53,186 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:58:53,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:58:53,187 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:58:53,187 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:58:53,187 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:58:53,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:58:53,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:58:53,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:58:53,294 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 [2025-01-23 19:58:53,488 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 [2025-01-23 19:58:53,489 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:58:53,489 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:58:53,489 INFO L139 ounterexampleChecker]: Examining path program with hash 238145862, occurence #3 [2025-01-23 19:58:53,489 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:58:53,489 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:58:53,489 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:53,489 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 5 [2025-01-23 19:58:53,489 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:58:53,489 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2025-01-23 19:58:53,489 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:58:53,489 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 11 [2025-01-23 19:58:53,489 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:58:53,489 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 20 [2025-01-23 19:58:53,489 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:53,489 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 24 [2025-01-23 19:58:53,489 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:53,489 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 29 [2025-01-23 19:58:53,489 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:58:53,490 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:58:53,490 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:58:53,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:58:53,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1701215063, now seen corresponding path program 1 times [2025-01-23 19:58:53,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-23 19:58:53,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813920271] [2025-01-23 19:58:53,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:58:53,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:58:53,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:58:53,496 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:58:53,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-23 19:58:53,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-23 19:58:53,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-23 19:58:53,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:58:53,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:58:53,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-23 19:58:53,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:58:53,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-23 19:58:53,748 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:58:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-23 19:58:53,977 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-23 19:58:53,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813920271] [2025-01-23 19:58:53,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813920271] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:58:53,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-23 19:58:53,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2025-01-23 19:58:53,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191799628] [2025-01-23 19:58:53,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-23 19:58:53,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-23 19:58:53,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-23 19:58:53,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-23 19:58:53,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-01-23 19:58:53,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:58:53,979 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:58:53,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:58:53,979 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:58:53,979 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:58:53,979 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:58:53,979 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:58:54,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:58:54,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:58:54,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:58:54,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:58:54,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-23 19:58:54,423 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 [2025-01-23 19:58:54,423 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:58:54,423 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:58:54,423 INFO L139 ounterexampleChecker]: Examining path program with hash 238145862, occurence #4 [2025-01-23 19:58:54,423 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:58:54,424 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:58:54,424 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:54,424 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 6 [2025-01-23 19:58:54,424 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:58:54,424 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 9 [2025-01-23 19:58:54,424 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:58:54,424 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 12 [2025-01-23 19:58:54,424 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:58:54,424 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 21 [2025-01-23 19:58:54,424 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:54,424 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 25 [2025-01-23 19:58:54,424 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:54,424 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 30 [2025-01-23 19:58:54,424 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:58:54,424 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:58:54,424 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:58:54,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:58:54,424 INFO L85 PathProgramCache]: Analyzing trace with hash -372742163, now seen corresponding path program 2 times [2025-01-23 19:58:54,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-23 19:58:54,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403509138] [2025-01-23 19:58:54,425 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-23 19:58:54,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:58:54,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:58:54,426 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:58:54,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-23 19:58:54,480 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. Killed by 15