./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c --traceabstraction.use.conditional.por.in.concurrent.analysis true --traceabstraction.commutativity.condition.synthesis SUFFICIENT --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ebd41074 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd --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 20:26:09,734 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-23 20:26:09,810 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-01-23 20:26:09,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-23 20:26:09,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-23 20:26:09,846 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-23 20:26:09,846 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-23 20:26:09,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-23 20:26:09,847 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-23 20:26:09,847 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-23 20:26:09,847 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-23 20:26:09,847 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-23 20:26:09,847 INFO L153 SettingsManager]: * Use SBE=true [2025-01-23 20:26:09,847 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-23 20:26:09,848 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-23 20:26:09,848 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-23 20:26:09,848 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-23 20:26:09,848 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-23 20:26:09,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-23 20:26:09,848 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-23 20:26:09,848 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-23 20:26:09,848 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-23 20:26:09,848 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-23 20:26:09,848 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-23 20:26:09,848 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-23 20:26:09,848 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-23 20:26:09,848 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-23 20:26:09,848 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-23 20:26:09,849 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-23 20:26:09,849 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-23 20:26:09,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-01-23 20:26:09,849 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-23 20:26:09,849 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-23 20:26:09,849 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-23 20:26:09,849 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-01-23 20:26:09,849 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-23 20:26:09,849 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-23 20:26:09,849 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-01-23 20:26:09,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-23 20:26:09,849 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-23 20:26:09,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-01-23 20:26:09,850 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-01-23 20:26:09,850 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-01-23 20:26:09,850 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 -> 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd 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 20:26:10,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-23 20:26:10,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-23 20:26:10,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-23 20:26:10,208 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-23 20:26:10,208 INFO L274 PluginConnector]: CDTParser initialized [2025-01-23 20:26:10,209 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2025-01-23 20:26:11,512 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/f34001e55/3d5ef0fae02341e2a7dbeb207e93cb70/FLAG614bb44de [2025-01-23 20:26:11,737 INFO L384 CDTParser]: Found 1 translation units. [2025-01-23 20:26:11,740 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2025-01-23 20:26:11,748 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/f34001e55/3d5ef0fae02341e2a7dbeb207e93cb70/FLAG614bb44de [2025-01-23 20:26:11,765 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/f34001e55/3d5ef0fae02341e2a7dbeb207e93cb70 [2025-01-23 20:26:11,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-23 20:26:11,769 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-23 20:26:11,770 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-23 20:26:11,770 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-23 20:26:11,774 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-23 20:26:11,776 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 08:26:11" (1/1) ... [2025-01-23 20:26:11,777 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e5c940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 08:26:11, skipping insertion in model container [2025-01-23 20:26:11,777 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 08:26:11" (1/1) ... [2025-01-23 20:26:11,796 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-23 20:26:11,955 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c[2173,2186] [2025-01-23 20:26:11,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-23 20:26:11,966 INFO L200 MainTranslator]: Completed pre-run [2025-01-23 20:26:12,022 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c[2173,2186] [2025-01-23 20:26:12,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-23 20:26:12,039 INFO L204 MainTranslator]: Completed translation [2025-01-23 20:26:12,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 08:26:12 WrapperNode [2025-01-23 20:26:12,039 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-23 20:26:12,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-23 20:26:12,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-23 20:26:12,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-23 20:26:12,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 08:26:12" (1/1) ... [2025-01-23 20:26:12,053 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 08:26:12" (1/1) ... [2025-01-23 20:26:12,069 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2025-01-23 20:26:12,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-23 20:26:12,070 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-23 20:26:12,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-23 20:26:12,071 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-23 20:26:12,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 08:26:12" (1/1) ... [2025-01-23 20:26:12,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 08:26:12" (1/1) ... [2025-01-23 20:26:12,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 08:26:12" (1/1) ... [2025-01-23 20:26:12,079 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 08:26:12" (1/1) ... [2025-01-23 20:26:12,084 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 08:26:12" (1/1) ... [2025-01-23 20:26:12,088 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 08:26:12" (1/1) ... [2025-01-23 20:26:12,091 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 08:26:12" (1/1) ... [2025-01-23 20:26:12,092 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 08:26:12" (1/1) ... [2025-01-23 20:26:12,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 08:26:12" (1/1) ... [2025-01-23 20:26:12,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-23 20:26:12,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-23 20:26:12,095 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-23 20:26:12,095 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-23 20:26:12,096 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 08:26:12" (1/1) ... [2025-01-23 20:26:12,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-01-23 20:26:12,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 20:26:12,126 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 20:26:12,128 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 20:26:12,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-23 20:26:12,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-23 20:26:12,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-23 20:26:12,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-23 20:26:12,151 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-23 20:26:12,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-23 20:26:12,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-23 20:26:12,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-23 20:26:12,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-23 20:26:12,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-23 20:26:12,153 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 20:26:12,227 INFO L234 CfgBuilder]: Building ICFG [2025-01-23 20:26:12,230 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-23 20:26:12,363 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-23 20:26:12,364 INFO L283 CfgBuilder]: Performing block encoding [2025-01-23 20:26:12,534 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-23 20:26:12,534 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-23 20:26:12,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 08:26:12 BoogieIcfgContainer [2025-01-23 20:26:12,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-23 20:26:12,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-23 20:26:12,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-23 20:26:12,543 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-23 20:26:12,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 08:26:11" (1/3) ... [2025-01-23 20:26:12,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a91019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 08:26:12, skipping insertion in model container [2025-01-23 20:26:12,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 08:26:12" (2/3) ... [2025-01-23 20:26:12,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a91019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 08:26:12, skipping insertion in model container [2025-01-23 20:26:12,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 08:26:12" (3/3) ... [2025-01-23 20:26:12,547 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2025-01-23 20:26:12,562 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-23 20:26:12,565 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-nonblocking-counter-alt2.wvr.c that has 3 procedures, 20 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-01-23 20:26:12,566 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-23 20:26:12,641 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-23 20:26:12,676 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-23 20:26:12,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-01-23 20:26:12,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 20:26:12,680 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 20:26:12,681 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 20:26:12,751 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-01-23 20:26:12,769 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-01-23 20:26:12,775 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;@565050ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-23 20:26:12,775 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-01-23 20:26:13,059 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-23 20:26:13,059 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 20:26:13,059 INFO L139 ounterexampleChecker]: Examining path program with hash 133758905, occurence #1 [2025-01-23 20:26:13,059 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 20:26:13,059 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 20:26:13,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 20:26:13,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1232841739, now seen corresponding path program 1 times [2025-01-23 20:26:13,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 20:26:13,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168324221] [2025-01-23 20:26:13,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 20:26:13,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 20:26:13,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-23 20:26:13,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-23 20:26:13,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 20:26:13,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 20:26:13,456 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 20:26:13,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 20:26:13,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168324221] [2025-01-23 20:26:13,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168324221] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-23 20:26:13,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-23 20:26:13,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-23 20:26:13,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32121403] [2025-01-23 20:26:13,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-23 20:26:13,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-23 20:26:13,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 20:26:13,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-23 20:26:13,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-23 20:26:13,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 20:26:13,481 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 20:26:13,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 20:26:13,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 20:26:13,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 20:26:13,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-23 20:26:13,543 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-23 20:26:13,543 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 20:26:13,543 INFO L139 ounterexampleChecker]: Examining path program with hash -978612501, occurence #1 [2025-01-23 20:26:13,543 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 20:26:13,543 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 20:26:13,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 20:26:13,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1769489415, now seen corresponding path program 1 times [2025-01-23 20:26:13,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 20:26:13,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969700109] [2025-01-23 20:26:13,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 20:26:13,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 20:26:13,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-23 20:26:13,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-23 20:26:13,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 20:26:13,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 20:26:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 20:26:13,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 20:26:13,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969700109] [2025-01-23 20:26:13,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969700109] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 20:26:13,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501209301] [2025-01-23 20:26:13,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 20:26:13,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 20:26:13,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 20:26:13,982 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 20:26:13,983 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 20:26:14,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-23 20:26:14,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-23 20:26:14,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 20:26:14,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 20:26:14,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-23 20:26:14,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 20:26:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 20:26:14,255 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 20:26:14,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 20:26:14,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501209301] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 20:26:14,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 20:26:14,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2025-01-23 20:26:14,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173159554] [2025-01-23 20:26:14,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 20:26:14,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-23 20:26:14,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 20:26:14,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-23 20:26:14,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2025-01-23 20:26:14,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 20:26:14,683 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 20:26:14,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 20:26:14,683 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 20:26:14,683 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 20:26:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 20:26:15,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-23 20:26:15,376 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 20:26:15,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 20:26:15,574 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-23 20:26:15,574 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 20:26:15,575 INFO L139 ounterexampleChecker]: Examining path program with hash -978612501, occurence #2 [2025-01-23 20:26:15,575 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 20:26:15,575 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1 [2025-01-23 20:26:15,590 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 20:26:15,590 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-01-23 20:26:15,590 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 20:26:15,590 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 27 [2025-01-23 20:26:15,591 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 20:26:15,591 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 29 [2025-01-23 20:26:15,591 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 20:26:15,591 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 20:26:15,591 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 20:26:15,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 20:26:15,591 INFO L85 PathProgramCache]: Analyzing trace with hash -15855417, now seen corresponding path program 2 times [2025-01-23 20:26:15,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 20:26:15,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965424726] [2025-01-23 20:26:15,592 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-23 20:26:15,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 20:26:15,601 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-01-23 20:26:15,655 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-01-23 20:26:15,656 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-23 20:26:15,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 20:26:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 20:26:16,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 20:26:16,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965424726] [2025-01-23 20:26:16,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965424726] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 20:26:16,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124604343] [2025-01-23 20:26:16,722 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-23 20:26:16,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 20:26:16,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 20:26:16,726 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 20:26:16,729 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 20:26:16,765 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-01-23 20:26:16,786 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-01-23 20:26:16,787 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-23 20:26:16,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 20:26:16,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-23 20:26:16,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 20:26:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 20:26:17,864 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 20:26:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 20:26:23,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124604343] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 20:26:23,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 20:26:23,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 17] total 41 [2025-01-23 20:26:23,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570129909] [2025-01-23 20:26:23,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 20:26:23,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-01-23 20:26:23,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 20:26:23,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-01-23 20:26:23,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1274, Unknown=0, NotChecked=0, Total=1640 [2025-01-23 20:26:23,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 20:26:23,666 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 20:26:23,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.951219512195122) internal successors, (80), 41 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 20:26:23,666 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 20:26:23,666 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2025-01-23 20:26:23,666 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 20:26:48,776 WARN L286 SmtUtils]: Spent 18.97s on a formula simplification. DAG size of input: 70 DAG size of output: 66 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 20:29:10,349 WARN L286 SmtUtils]: Spent 2.32m on a formula simplification. DAG size of input: 86 DAG size of output: 56 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 20:29:59,821 WARN L286 SmtUtils]: Spent 47.99s on a formula simplification. DAG size of input: 92 DAG size of output: 44 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 20:30:01,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:30:36,981 WARN L286 SmtUtils]: Spent 34.59s on a formula simplification. DAG size of input: 95 DAG size of output: 46 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 20:30:38,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:30:40,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:30:55,640 WARN L286 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 83 DAG size of output: 28 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 20:30:57,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:30:59,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:31:01,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:31:03,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:31:05,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:31:07,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:31:09,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:31:23,545 WARN L286 SmtUtils]: Spent 12.70s on a formula simplification. DAG size of input: 68 DAG size of output: 53 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 20:31:25,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:32:20,174 WARN L286 SmtUtils]: Spent 50.86s on a formula simplification. DAG size of input: 102 DAG size of output: 56 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 20:32:22,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:32:34,698 WARN L286 SmtUtils]: Spent 6.61s on a formula simplification. DAG size of input: 76 DAG size of output: 60 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 20:32:36,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:32:38,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:32:39,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 20:32:39,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-23 20:32:39,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-01-23 20:32:39,206 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 20:32:39,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 20:32:39,401 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-23 20:32:39,401 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 20:32:39,401 INFO L139 ounterexampleChecker]: Examining path program with hash 972821033, occurence #1 [2025-01-23 20:32:39,401 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 20:32:39,402 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 20:32:39,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 20:32:39,402 INFO L85 PathProgramCache]: Analyzing trace with hash -30335699, now seen corresponding path program 3 times [2025-01-23 20:32:39,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 20:32:39,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944254204] [2025-01-23 20:32:39,402 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-23 20:32:39,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 20:32:39,408 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 6 equivalence classes. [2025-01-23 20:32:39,476 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 38 of 38 statements. [2025-01-23 20:32:39,476 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-23 20:32:39,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 20:32:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 20:32:40,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 20:32:40,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944254204] [2025-01-23 20:32:40,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944254204] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 20:32:40,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183558334] [2025-01-23 20:32:40,889 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-23 20:32:40,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 20:32:40,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 20:32:40,892 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 20:32:40,894 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 20:32:40,925 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 6 equivalence classes. [2025-01-23 20:32:40,950 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 38 of 38 statements. [2025-01-23 20:32:40,950 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-23 20:32:40,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 20:32:40,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-23 20:32:40,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 20:32:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 20:32:52,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 20:32:54,647 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-01-23 20:32:54,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183558334] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 20:32:54,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 20:32:54,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12, 4] total 35 [2025-01-23 20:32:54,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699188871] [2025-01-23 20:32:54,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 20:32:54,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-23 20:32:54,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 20:32:54,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-23 20:32:54,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1017, Unknown=2, NotChecked=0, Total=1260 [2025-01-23 20:32:54,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 20:32:54,649 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 20:32:54,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.5277777777777777) internal successors, (91), 35 states have internal predecessors, (91), 0 states have call successors, (0), 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 20:32:54,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 20:32:54,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2025-01-23 20:32:54,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2025-01-23 20:32:54,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 20:33:00,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:33:04,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:33:11,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:33:17,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:33:19,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:33:29,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:33:31,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:33:48,709 WARN L286 SmtUtils]: Spent 15.08s on a formula simplification. DAG size of input: 55 DAG size of output: 38 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 20:33:50,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:33:52,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:33:54,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:33:56,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:33:58,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:34:00,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:34:02,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:34:04,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:34:06,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:34:29,167 WARN L286 SmtUtils]: Spent 18.61s on a formula simplification. DAG size of input: 59 DAG size of output: 36 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 20:34:31,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:34:33,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:34:35,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:34:57,804 WARN L286 SmtUtils]: Spent 14.30s on a formula simplification. DAG size of input: 56 DAG size of output: 39 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 20:34:59,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:35:31,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:35:33,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 20:35:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 20:35:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-23 20:35:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-01-23 20:35:37,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-01-23 20:35:37,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-23 20:35:37,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 20:35:37,278 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-23 20:35:37,278 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 20:35:37,278 INFO L139 ounterexampleChecker]: Examining path program with hash -1775247202, occurence #1 [2025-01-23 20:35:37,278 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 20:35:37,278 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 20:35:37,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 20:35:37,279 INFO L85 PathProgramCache]: Analyzing trace with hash -826913403, now seen corresponding path program 4 times [2025-01-23 20:35:37,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 20:35:37,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935299521] [2025-01-23 20:35:37,279 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-23 20:35:37,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 20:35:37,285 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 59 statements into 2 equivalence classes. [2025-01-23 20:35:37,469 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 59 of 59 statements. [2025-01-23 20:35:37,469 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-23 20:35:37,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15