./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/unroll-cond-4.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/unroll-cond-4.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b28fb6889d0d92f72216f98e0edff81bbc7a955814acfd4caad3db76eb7ead3 --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 21:22:13,848 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-23 21:22:13,927 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-01-23 21:22:13,931 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-23 21:22:13,933 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-23 21:22:13,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-23 21:22:13,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-23 21:22:13,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-23 21:22:13,957 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-23 21:22:13,957 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-23 21:22:13,957 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-23 21:22:13,957 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-23 21:22:13,958 INFO L153 SettingsManager]: * Use SBE=true [2025-01-23 21:22:13,958 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-23 21:22:13,958 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-23 21:22:13,959 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-23 21:22:13,959 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-23 21:22:13,959 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-23 21:22:13,959 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-23 21:22:13,959 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-23 21:22:13,959 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-23 21:22:13,959 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-23 21:22:13,959 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-23 21:22:13,959 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-23 21:22:13,959 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-23 21:22:13,959 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-23 21:22:13,959 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-23 21:22:13,959 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-23 21:22:13,959 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-23 21:22:13,960 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-23 21:22:13,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-01-23 21:22:13,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-23 21:22:13,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-23 21:22:13,960 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-23 21:22:13,960 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-01-23 21:22:13,960 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-23 21:22:13,960 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-23 21:22:13,960 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-01-23 21:22:13,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-23 21:22:13,960 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-23 21:22:13,960 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-01-23 21:22:13,960 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-01-23 21:22:13,960 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-01-23 21:22:13,960 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 -> 6b28fb6889d0d92f72216f98e0edff81bbc7a955814acfd4caad3db76eb7ead3 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 21:22:14,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-23 21:22:14,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-23 21:22:14,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-23 21:22:14,207 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-23 21:22:14,207 INFO L274 PluginConnector]: CDTParser initialized [2025-01-23 21:22:14,208 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2025-01-23 21:22:15,371 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/d647da051/4ed86412f2fb4856a377ac5384906fc4/FLAG0600aae19 [2025-01-23 21:22:15,555 INFO L384 CDTParser]: Found 1 translation units. [2025-01-23 21:22:15,556 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2025-01-23 21:22:15,563 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/d647da051/4ed86412f2fb4856a377ac5384906fc4/FLAG0600aae19 [2025-01-23 21:22:15,952 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/d647da051/4ed86412f2fb4856a377ac5384906fc4 [2025-01-23 21:22:15,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-23 21:22:15,954 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-23 21:22:15,955 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-23 21:22:15,955 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-23 21:22:15,958 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-23 21:22:15,958 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 09:22:15" (1/1) ... [2025-01-23 21:22:15,959 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5178965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 09:22:15, skipping insertion in model container [2025-01-23 21:22:15,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 09:22:15" (1/1) ... [2025-01-23 21:22:15,969 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-23 21:22:16,080 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c[2834,2847] [2025-01-23 21:22:16,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-23 21:22:16,094 INFO L200 MainTranslator]: Completed pre-run [2025-01-23 21:22:16,144 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c[2834,2847] [2025-01-23 21:22:16,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-23 21:22:16,158 INFO L204 MainTranslator]: Completed translation [2025-01-23 21:22:16,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 09:22:16 WrapperNode [2025-01-23 21:22:16,158 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-23 21:22:16,159 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-23 21:22:16,159 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-23 21:22:16,160 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-23 21:22:16,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 09:22:16" (1/1) ... [2025-01-23 21:22:16,169 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 09:22:16" (1/1) ... [2025-01-23 21:22:16,189 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 167 [2025-01-23 21:22:16,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-23 21:22:16,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-23 21:22:16,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-23 21:22:16,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-23 21:22:16,198 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 09:22:16" (1/1) ... [2025-01-23 21:22:16,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 09:22:16" (1/1) ... [2025-01-23 21:22:16,199 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 09:22:16" (1/1) ... [2025-01-23 21:22:16,199 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 09:22:16" (1/1) ... [2025-01-23 21:22:16,207 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 09:22:16" (1/1) ... [2025-01-23 21:22:16,207 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 09:22:16" (1/1) ... [2025-01-23 21:22:16,209 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 09:22:16" (1/1) ... [2025-01-23 21:22:16,213 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 09:22:16" (1/1) ... [2025-01-23 21:22:16,214 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 09:22:16" (1/1) ... [2025-01-23 21:22:16,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-23 21:22:16,219 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-23 21:22:16,219 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-23 21:22:16,219 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-23 21:22:16,219 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 09:22:16" (1/1) ... [2025-01-23 21:22:16,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-01-23 21:22:16,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 21:22:16,250 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 21:22:16,252 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 21:22:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-23 21:22:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-23 21:22:16,269 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-23 21:22:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-23 21:22:16,269 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-23 21:22:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-23 21:22:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-01-23 21:22:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-23 21:22:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-23 21:22:16,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-23 21:22:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-01-23 21:22:16,270 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 21:22:16,341 INFO L234 CfgBuilder]: Building ICFG [2025-01-23 21:22:16,342 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-23 21:22:16,591 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-23 21:22:16,591 INFO L283 CfgBuilder]: Performing block encoding [2025-01-23 21:22:16,849 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-23 21:22:16,849 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-23 21:22:16,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 09:22:16 BoogieIcfgContainer [2025-01-23 21:22:16,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-23 21:22:16,851 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-23 21:22:16,852 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-23 21:22:16,855 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-23 21:22:16,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 09:22:15" (1/3) ... [2025-01-23 21:22:16,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd97ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 09:22:16, skipping insertion in model container [2025-01-23 21:22:16,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 09:22:16" (2/3) ... [2025-01-23 21:22:16,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd97ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 09:22:16, skipping insertion in model container [2025-01-23 21:22:16,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 09:22:16" (3/3) ... [2025-01-23 21:22:16,859 INFO L128 eAbstractionObserver]: Analyzing ICFG unroll-cond-4.wvr.c [2025-01-23 21:22:16,869 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-23 21:22:16,870 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unroll-cond-4.wvr.c that has 3 procedures, 18 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-23 21:22:16,871 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-23 21:22:16,908 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-23 21:22:16,941 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-23 21:22:16,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-01-23 21:22:16,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 21:22:16,944 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 21:22:16,949 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 21:22:17,013 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-01-23 21:22:17,024 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-01-23 21:22:17,029 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;@6f8e7b17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-23 21:22:17,031 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-01-23 21:22:17,137 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 21:22:17,138 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 21:22:17,139 INFO L139 ounterexampleChecker]: Examining path program with hash -305931711, occurence #1 [2025-01-23 21:22:17,139 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 21:22:17,139 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 21:22:17,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 21:22:17,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1899355979, now seen corresponding path program 1 times [2025-01-23 21:22:17,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 21:22:17,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845683552] [2025-01-23 21:22:17,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 21:22:17,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 21:22:17,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-23 21:22:17,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-23 21:22:17,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 21:22:17,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 21:22:17,449 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 21:22:17,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 21:22:17,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845683552] [2025-01-23 21:22:17,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845683552] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-23 21:22:17,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-23 21:22:17,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-23 21:22:17,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74561784] [2025-01-23 21:22:17,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-23 21:22:17,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-23 21:22:17,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 21:22:17,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-23 21:22:17,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-23 21:22:17,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 21:22:17,470 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 21:22:17,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 21:22:17,472 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 21:22:17,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-23 21:22:17,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-23 21:22:17,509 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 21:22:17,509 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 21:22:17,510 INFO L139 ounterexampleChecker]: Examining path program with hash -305931711, occurence #2 [2025-01-23 21:22:17,510 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 21:22:17,510 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 21:22:17,510 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 21:22:17,510 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 3 [2025-01-23 21:22:17,522 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 21:22:17,523 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 6 [2025-01-23 21:22:17,523 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 21:22:17,523 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 12 [2025-01-23 21:22:17,523 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 21:22:17,523 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 21:22:17,523 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 21:22:17,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 21:22:17,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1299496164, now seen corresponding path program 1 times [2025-01-23 21:22:17,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 21:22:17,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009370590] [2025-01-23 21:22:17,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 21:22:17,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 21:22:17,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-23 21:22:17,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-23 21:22:17,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 21:22:17,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 21:22:17,773 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 21:22:17,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 21:22:17,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009370590] [2025-01-23 21:22:17,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009370590] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-23 21:22:17,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-23 21:22:17,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-23 21:22:17,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510081800] [2025-01-23 21:22:17,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-23 21:22:17,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-23 21:22:17,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 21:22:17,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-23 21:22:17,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-23 21:22:17,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 21:22:17,776 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 21:22:17,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 21:22:17,776 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-23 21:22:17,776 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 21:22:17,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-23 21:22:17,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 21:22:17,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-23 21:22:17,846 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 21:22:17,846 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 21:22:17,846 INFO L139 ounterexampleChecker]: Examining path program with hash -305931711, occurence #3 [2025-01-23 21:22:17,846 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 21:22:17,846 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 21:22:17,846 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 21:22:17,846 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 3 [2025-01-23 21:22:17,846 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 21:22:17,847 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 6 [2025-01-23 21:22:17,847 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 21:22:17,847 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 11 [2025-01-23 21:22:17,847 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 21:22:17,847 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 13 [2025-01-23 21:22:17,847 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 21:22:17,847 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 21:22:17,847 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 21:22:17,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 21:22:17,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1630417676, now seen corresponding path program 1 times [2025-01-23 21:22:17,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 21:22:17,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748437854] [2025-01-23 21:22:17,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 21:22:17,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 21:22:17,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-23 21:22:17,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-23 21:22:17,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 21:22:17,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 21:22:18,134 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 21:22:18,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 21:22:18,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748437854] [2025-01-23 21:22:18,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748437854] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 21:22:18,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821932926] [2025-01-23 21:22:18,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 21:22:18,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 21:22:18,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 21:22:18,143 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 21:22:18,148 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 21:22:18,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-23 21:22:18,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-23 21:22:18,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 21:22:18,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 21:22:18,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-01-23 21:22:18,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 21:22:18,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-23 21:22:18,631 INFO L349 Elim1Store]: treesize reduction 182, result has 9.5 percent of original size [2025-01-23 21:22:18,631 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 11 new quantified variables, introduced 21 case distinctions, treesize of input 320 treesize of output 222 [2025-01-23 21:22:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 21:22:19,246 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 21:22:21,015 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 476 treesize of output 418 [2025-01-23 21:22:21,398 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-23 21:22:21,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 2829 treesize of output 1933 [2025-01-23 21:23:11,815 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-23 21:23:36,465 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-23 21:24:41,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 21:24:41,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821932926] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 21:24:41,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 21:24:41,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2025-01-23 21:24:41,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233934563] [2025-01-23 21:24:41,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 21:24:41,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-23 21:24:41,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 21:24:41,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-23 21:24:41,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2025-01-23 21:24:41,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 21:24:41,379 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 21:24:41,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 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 21:24:41,379 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-23 21:24:41,379 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 21:24:41,379 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 21:24:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-23 21:24:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 21:24:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-23 21:24:41,622 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 21:24:41,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 21:24:41,819 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 21:24:41,819 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 21:24:41,820 INFO L139 ounterexampleChecker]: Examining path program with hash -305931711, occurence #4 [2025-01-23 21:24:41,820 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 21:24:41,820 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 21:24:41,820 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 21:24:41,820 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-01-23 21:24:41,820 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 21:24:41,820 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 7 [2025-01-23 21:24:41,821 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 21:24:41,821 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 13 [2025-01-23 21:24:41,821 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 21:24:41,821 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 15 [2025-01-23 21:24:41,821 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 21:24:41,821 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 21:24:41,821 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 21:24:41,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 21:24:41,822 INFO L85 PathProgramCache]: Analyzing trace with hash -726088875, now seen corresponding path program 2 times [2025-01-23 21:24:41,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 21:24:41,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385045838] [2025-01-23 21:24:41,824 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-23 21:24:41,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 21:24:41,831 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-23 21:24:41,865 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-23 21:24:41,866 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-23 21:24:41,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 21:24:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-23 21:24:41,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 21:24:41,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385045838] [2025-01-23 21:24:41,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385045838] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 21:24:41,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569506372] [2025-01-23 21:24:41,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-23 21:24:41,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 21:24:41,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 21:24:41,992 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 21:24:41,993 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 21:24:42,034 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-23 21:24:42,096 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-23 21:24:42,096 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-23 21:24:42,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 21:24:42,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-23 21:24:42,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 21:24:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-23 21:24:42,142 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 21:24:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-23 21:24:42,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569506372] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 21:24:42,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 21:24:42,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-01-23 21:24:42,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058157307] [2025-01-23 21:24:42,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 21:24:42,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-23 21:24:42,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 21:24:42,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-23 21:24:42,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2025-01-23 21:24:42,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 21:24:42,325 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 21:24:42,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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 21:24:42,325 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-23 21:24:42,325 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 21:24:42,325 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2025-01-23 21:24:42,325 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 21:24:43,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-23 21:24:43,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 21:24:43,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-23 21:24:43,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-23 21:24:43,957 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 21:24:44,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 21:24:44,151 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 21:24:44,151 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 21:24:44,151 INFO L139 ounterexampleChecker]: Examining path program with hash -305931711, occurence #5 [2025-01-23 21:24:44,151 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 21:24:44,151 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 21:24:44,151 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 21:24:44,151 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-01-23 21:24:44,152 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 21:24:44,152 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 7 [2025-01-23 21:24:44,152 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 21:24:44,152 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 17 [2025-01-23 21:24:44,152 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 21:24:44,152 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 19 [2025-01-23 21:24:44,152 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 21:24:44,152 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 21:24:44,152 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 21:24:44,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 21:24:44,152 INFO L85 PathProgramCache]: Analyzing trace with hash -885101355, now seen corresponding path program 3 times [2025-01-23 21:24:44,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 21:24:44,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297899360] [2025-01-23 21:24:44,152 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-23 21:24:44,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 21:24:44,160 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 4 equivalence classes. [2025-01-23 21:24:44,313 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 22 of 22 statements. [2025-01-23 21:24:44,313 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-23 21:24:44,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 21:24:44,588 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-23 21:24:44,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 21:24:44,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297899360] [2025-01-23 21:24:44,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297899360] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 21:24:44,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535696042] [2025-01-23 21:24:44,589 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-23 21:24:44,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 21:24:44,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 21:24:44,592 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 21:24:44,595 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 21:24:44,636 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 4 equivalence classes. [2025-01-23 21:24:44,766 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 22 of 22 statements. [2025-01-23 21:24:44,766 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-23 21:24:44,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 21:24:44,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-23 21:24:44,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 21:24:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-23 21:24:44,869 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 21:24:45,115 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-23 21:24:45,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535696042] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 21:24:45,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 21:24:45,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2025-01-23 21:24:45,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193693306] [2025-01-23 21:24:45,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 21:24:45,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-23 21:24:45,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 21:24:45,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-23 21:24:45,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2025-01-23 21:24:45,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 21:24:45,116 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 21:24:45,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 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 21:24:45,116 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-23 21:24:45,116 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 21:24:45,116 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2025-01-23 21:24:45,116 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2025-01-23 21:24:45,116 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 21:24:46,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-23 21:24:46,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 21:24:46,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-23 21:24:46,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-23 21:24:46,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-23 21:24:46,566 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 21:24:46,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 21:24:46,759 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-23 21:24:46,759 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 21:24:46,759 INFO L139 ounterexampleChecker]: Examining path program with hash -305931711, occurence #6 [2025-01-23 21:24:46,759 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 21:24:46,759 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 21:24:46,759 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 21:24:46,759 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-01-23 21:24:46,760 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 21:24:46,760 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 7 [2025-01-23 21:24:46,760 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 21:24:46,760 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 26 [2025-01-23 21:24:46,760 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 21:24:46,760 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 28 [2025-01-23 21:24:46,760 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 21:24:46,760 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 21:24:46,760 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 21:24:46,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 21:24:46,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1579404859, now seen corresponding path program 4 times [2025-01-23 21:24:46,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 21:24:46,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190431086] [2025-01-23 21:24:46,762 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-23 21:24:46,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 21:24:46,774 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-01-23 21:24:46,818 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-01-23 21:24:46,818 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-23 21:24:46,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 21:24:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-23 21:24:47,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 21:24:47,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190431086] [2025-01-23 21:24:47,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190431086] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 21:24:47,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559352419] [2025-01-23 21:24:47,527 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-23 21:24:47,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 21:24:47,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 21:24:47,529 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 21:24:47,533 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 21:24:47,578 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-01-23 21:24:47,863 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-01-23 21:24:47,863 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-23 21:24:47,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 21:24:47,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-01-23 21:24:47,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 21:24:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-23 21:24:48,390 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 21:24:49,401 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-23 21:24:49,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559352419] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 21:24:49,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 21:24:49,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 53 [2025-01-23 21:24:49,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982530547] [2025-01-23 21:24:49,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 21:24:49,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-01-23 21:24:49,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 21:24:49,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-01-23 21:24:49,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=2109, Unknown=0, NotChecked=0, Total=2756 [2025-01-23 21:24:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 21:24:49,403 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 21:24:49,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 53 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 21:24:49,405 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2025-01-23 21:24:49,405 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 21:24:49,405 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2025-01-23 21:24:49,405 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2025-01-23 21:24:49,405 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2025-01-23 21:24:49,405 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 21:26:44,743 WARN L286 SmtUtils]: Spent 1.91m on a formula simplification. DAG size of input: 102 DAG size of output: 97 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 21:26:53,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-23 21:26:55,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-23 21:26:57,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-23 21:26:59,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-23 21:27:01,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-23 21:27:01,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-23 21:27:01,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 21:27:01,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-23 21:27:01,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-23 21:27:01,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-23 21:27:01,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-01-23 21:27:01,268 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 21:27:01,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 21:27:01,461 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-23 21:27:01,461 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 21:27:01,462 INFO L139 ounterexampleChecker]: Examining path program with hash -305931711, occurence #7 [2025-01-23 21:27:01,462 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 21:27:01,463 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 21:27:01,463 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 21:27:01,463 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-01-23 21:27:01,463 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 21:27:01,463 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 7 [2025-01-23 21:27:01,463 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 21:27:01,464 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 43 [2025-01-23 21:27:01,464 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 21:27:01,464 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 45 [2025-01-23 21:27:01,464 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 21:27:01,464 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 21:27:01,464 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 21:27:01,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 21:27:01,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1466371435, now seen corresponding path program 5 times [2025-01-23 21:27:01,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 21:27:01,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637253088] [2025-01-23 21:27:01,465 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-23 21:27:01,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 21:27:01,478 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 48 statements into 17 equivalence classes. [2025-01-23 21:27:02,124 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) and asserted 48 of 48 statements. [2025-01-23 21:27:02,124 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2025-01-23 21:27:02,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 21:27:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-23 21:27:03,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 21:27:03,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637253088] [2025-01-23 21:27:03,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637253088] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 21:27:03,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179381868] [2025-01-23 21:27:03,759 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-23 21:27:03,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 21:27:03,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 21:27:03,761 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 21:27:03,762 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 21:27:03,842 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 48 statements into 17 equivalence classes. Killed by 15