./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c --full-output --traceabstraction.commutativity.condition.synthesis SUFFICIENT -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1c4755c5 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/mult-flipped-dist.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 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc --traceabstraction.commutativity.condition.synthesis SUFFICIENT -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml --- Real Ultimate output --- This is Ultimate 0.3.0-dev-1c4755c-m [2024-12-17 13:50:07,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-17 13:50:07,936 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-12-17 13:50:07,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-17 13:50:07,943 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-17 13:50:07,963 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-17 13:50:07,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-17 13:50:07,964 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-17 13:50:07,964 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-17 13:50:07,964 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-17 13:50:07,965 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-17 13:50:07,965 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-17 13:50:07,965 INFO L153 SettingsManager]: * Use SBE=true [2024-12-17 13:50:07,965 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-17 13:50:07,966 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-12-17 13:50:07,966 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-17 13:50:07,966 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-17 13:50:07,967 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-12-17 13:50:07,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-17 13:50:07,967 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-17 13:50:07,967 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-12-17 13:50:07,967 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-12-17 13:50:07,967 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-12-17 13:50:07,967 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 -> 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Commutativity condition synthesis -> SUFFICIENT [2024-12-17 13:50:08,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-17 13:50:08,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-17 13:50:08,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-17 13:50:08,192 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-17 13:50:08,192 INFO L274 PluginConnector]: CDTParser initialized [2024-12-17 13:50:08,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c [2024-12-17 13:50:09,294 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/59ef2c7df/e7bb86fcf15c4373aacf03ad8e2b56f1/FLAG346084d2a [2024-12-17 13:50:09,489 INFO L384 CDTParser]: Found 1 translation units. [2024-12-17 13:50:09,489 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c [2024-12-17 13:50:09,499 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/59ef2c7df/e7bb86fcf15c4373aacf03ad8e2b56f1/FLAG346084d2a [2024-12-17 13:50:09,531 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/59ef2c7df/e7bb86fcf15c4373aacf03ad8e2b56f1 [2024-12-17 13:50:09,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-17 13:50:09,534 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-17 13:50:09,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-17 13:50:09,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-17 13:50:09,540 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-17 13:50:09,541 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 01:50:09" (1/1) ... [2024-12-17 13:50:09,543 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b6bc102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:50:09, skipping insertion in model container [2024-12-17 13:50:09,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 01:50:09" (1/1) ... [2024-12-17 13:50:09,555 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-17 13:50:09,686 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/mult-flipped-dist.wvr.c[2174,2187] [2024-12-17 13:50:09,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-17 13:50:09,698 INFO L200 MainTranslator]: Completed pre-run [2024-12-17 13:50:09,712 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/mult-flipped-dist.wvr.c[2174,2187] [2024-12-17 13:50:09,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-17 13:50:09,722 INFO L204 MainTranslator]: Completed translation [2024-12-17 13:50:09,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:50:09 WrapperNode [2024-12-17 13:50:09,722 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-17 13:50:09,723 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-17 13:50:09,723 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-17 13:50:09,723 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-17 13:50:09,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:50:09" (1/1) ... [2024-12-17 13:50:09,732 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:50:09" (1/1) ... [2024-12-17 13:50:09,741 INFO L138 Inliner]: procedures = 21, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2024-12-17 13:50:09,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-17 13:50:09,741 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-17 13:50:09,741 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-17 13:50:09,741 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-17 13:50:09,745 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:50:09" (1/1) ... [2024-12-17 13:50:09,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:50:09" (1/1) ... [2024-12-17 13:50:09,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:50:09" (1/1) ... [2024-12-17 13:50:09,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:50:09" (1/1) ... [2024-12-17 13:50:09,748 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:50:09" (1/1) ... [2024-12-17 13:50:09,749 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:50:09" (1/1) ... [2024-12-17 13:50:09,750 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:50:09" (1/1) ... [2024-12-17 13:50:09,751 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:50:09" (1/1) ... [2024-12-17 13:50:09,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:50:09" (1/1) ... [2024-12-17 13:50:09,752 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-17 13:50:09,753 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-17 13:50:09,753 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-17 13:50:09,753 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-17 13:50:09,754 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:50:09" (1/1) ... [2024-12-17 13:50:09,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-12-17 13:50:09,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2024-12-17 13:50:09,786 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) [2024-12-17 13:50:09,788 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 [2024-12-17 13:50:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-17 13:50:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-17 13:50:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-17 13:50:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-17 13:50:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-17 13:50:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-17 13:50:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-17 13:50:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-17 13:50:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-17 13:50:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-17 13:50:09,804 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-17 13:50:09,871 INFO L234 CfgBuilder]: Building ICFG [2024-12-17 13:50:09,873 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-17 13:50:10,001 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-17 13:50:10,002 INFO L283 CfgBuilder]: Performing block encoding [2024-12-17 13:50:10,081 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-17 13:50:10,081 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-17 13:50:10,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 01:50:10 BoogieIcfgContainer [2024-12-17 13:50:10,082 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-17 13:50:10,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-17 13:50:10,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-17 13:50:10,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-17 13:50:10,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 01:50:09" (1/3) ... [2024-12-17 13:50:10,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc9f50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 01:50:10, skipping insertion in model container [2024-12-17 13:50:10,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:50:09" (2/3) ... [2024-12-17 13:50:10,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc9f50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 01:50:10, skipping insertion in model container [2024-12-17 13:50:10,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 01:50:10" (3/3) ... [2024-12-17 13:50:10,088 INFO L128 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2024-12-17 13:50:10,097 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-17 13:50:10,098 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mult-flipped-dist.wvr.c that has 4 procedures, 23 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-12-17 13:50:10,099 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-17 13:50:10,134 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-12-17 13:50:10,170 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-17 13:50:10,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-12-17 13:50:10,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2024-12-17 13:50:10,174 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) [2024-12-17 13:50:10,174 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 [2024-12-17 13:50:10,230 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-12-17 13:50:10,241 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-12-17 13:50:10,247 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;@241777dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-17 13:50:10,247 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-12-17 13:50:10,472 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-17 13:50:10,473 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-17 13:50:10,474 INFO L139 ounterexampleChecker]: Examining path program with hash 1787239335, occurence #1 [2024-12-17 13:50:10,474 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-17 13:50:10,475 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-17 13:50:10,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-17 13:50:10,479 INFO L85 PathProgramCache]: Analyzing trace with hash 896869224, now seen corresponding path program 1 times [2024-12-17 13:50:10,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-17 13:50:10,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270745344] [2024-12-17 13:50:10,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-17 13:50:10,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-17 13:50:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-17 13:50:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-17 13:50:10,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-17 13:50:10,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270745344] [2024-12-17 13:50:10,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270745344] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-17 13:50:10,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-17 13:50:10,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-17 13:50:10,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318480037] [2024-12-17 13:50:10,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-17 13:50:10,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-17 13:50:10,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-17 13:50:10,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-17 13:50:10,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-17 13:50:10,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-17 13:50:10,877 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-17 13:50:10,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2024-12-17 13:50:10,878 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-17 13:50:10,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-17 13:50:10,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-17 13:50:10,979 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-17 13:50:10,979 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-17 13:50:10,979 INFO L139 ounterexampleChecker]: Examining path program with hash 1787239335, occurence #2 [2024-12-17 13:50:10,979 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2024-12-17 13:50:10,979 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1 [2024-12-17 13:50:10,989 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-12-17 13:50:10,989 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2024-12-17 13:50:10,989 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-12-17 13:50:10,990 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 7 [2024-12-17 13:50:10,990 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-12-17 13:50:10,990 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 19 [2024-12-17 13:50:10,990 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-12-17 13:50:10,990 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2024-12-17 13:50:10,990 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-17 13:50:10,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-17 13:50:10,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1546251922, now seen corresponding path program 1 times [2024-12-17 13:50:10,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-17 13:50:10,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327255010] [2024-12-17 13:50:10,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-17 13:50:10,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-17 13:50:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-17 13:50:11,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-17 13:50:11,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-17 13:50:11,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327255010] [2024-12-17 13:50:11,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327255010] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-17 13:50:11,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146473992] [2024-12-17 13:50:11,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-17 13:50:11,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-17 13:50:11,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2024-12-17 13:50:11,197 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) [2024-12-17 13:50:11,199 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 [2024-12-17 13:50:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-17 13:50:11,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-17 13:50:11,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-17 13:50:11,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-17 13:50:11,379 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-17 13:50:11,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-17 13:50:11,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146473992] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-17 13:50:11,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-17 13:50:11,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2024-12-17 13:50:11,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597154263] [2024-12-17 13:50:11,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-17 13:50:11,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-17 13:50:11,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-17 13:50:11,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-17 13:50:11,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-12-17 13:50:11,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-17 13:50:11,583 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-17 13:50:11,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 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) [2024-12-17 13:50:11,584 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-12-17 13:50:11,584 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-17 13:50:24,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-17 13:50:24,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-12-17 13:50:24,785 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 [2024-12-17 13:50:24,980 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 [2024-12-17 13:50:24,980 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-17 13:50:24,980 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-17 13:50:24,980 INFO L139 ounterexampleChecker]: Examining path program with hash 1865210532, occurence #1 [2024-12-17 13:50:24,980 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-12-17 13:50:24,980 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-17 13:50:24,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-17 13:50:24,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1846275120, now seen corresponding path program 2 times [2024-12-17 13:50:24,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-17 13:50:24,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497521746] [2024-12-17 13:50:24,981 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-17 13:50:24,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-17 13:50:25,016 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-17 13:50:25,016 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-17 13:50:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-17 13:50:25,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-17 13:50:25,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497521746] [2024-12-17 13:50:25,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497521746] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-17 13:50:25,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952254271] [2024-12-17 13:50:25,428 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-17 13:50:25,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-17 13:50:25,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2024-12-17 13:50:25,431 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) [2024-12-17 13:50:25,433 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 [2024-12-17 13:50:25,491 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-17 13:50:25,491 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-17 13:50:25,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-17 13:50:25,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-17 13:50:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-17 13:50:25,656 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-17 13:50:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-17 13:50:26,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952254271] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-17 13:50:26,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-17 13:50:26,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2024-12-17 13:50:26,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319921665] [2024-12-17 13:50:26,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-17 13:50:26,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-17 13:50:26,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-17 13:50:26,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-17 13:50:26,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=750, Unknown=0, NotChecked=0, Total=930 [2024-12-17 13:50:26,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-17 13:50:26,084 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-17 13:50:26,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 31 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-17 13:50:26,085 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-12-17 13:50:26,085 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2024-12-17 13:50:26,085 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-17 13:50:28,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-17 13:50:28,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-12-17 13:50:28,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-17 13:50:28,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-17 13:50:28,310 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 [2024-12-17 13:50:28,310 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-17 13:50:28,310 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-12-17 13:50:28,310 INFO L139 ounterexampleChecker]: Examining path program with hash 1865210532, occurence #2 [2024-12-17 13:50:28,310 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2024-12-17 13:50:28,310 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1 [2024-12-17 13:50:28,311 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-12-17 13:50:28,311 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2024-12-17 13:50:28,311 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-12-17 13:50:28,311 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 7 [2024-12-17 13:50:28,311 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-12-17 13:50:28,311 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 48 [2024-12-17 13:50:28,311 WARN L190 ounterexampleChecker]: Statements were already independent. [2024-12-17 13:50:28,311 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2024-12-17 13:50:28,311 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-12-17 13:50:28,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-17 13:50:28,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1714651920, now seen corresponding path program 3 times [2024-12-17 13:50:28,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-17 13:50:28,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968255827] [2024-12-17 13:50:28,312 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-17 13:50:28,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-17 13:50:28,387 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-12-17 13:50:28,388 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-17 13:50:29,614 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-17 13:50:29,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-17 13:50:29,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968255827] [2024-12-17 13:50:29,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968255827] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-17 13:50:29,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490860071] [2024-12-17 13:50:29,614 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-17 13:50:29,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-17 13:50:29,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2024-12-17 13:50:29,616 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) [2024-12-17 13:50:29,618 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 [2024-12-17 13:50:29,685 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-12-17 13:50:29,686 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-17 13:50:29,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-12-17 13:50:29,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-17 13:50:30,546 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-17 13:50:30,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-17 13:50:32,081 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-17 13:50:32,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490860071] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-17 13:50:32,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-17 13:50:32,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 78 [2024-12-17 13:50:32,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297296228] [2024-12-17 13:50:32,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-17 13:50:32,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-12-17 13:50:32,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-17 13:50:32,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-12-17 13:50:32,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=5407, Unknown=0, NotChecked=0, Total=6006 [2024-12-17 13:50:32,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-17 13:50:32,089 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-12-17 13:50:32,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.794871794871795) internal successors, (140), 78 states have internal predecessors, (140), 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) [2024-12-17 13:50:32,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-12-17 13:50:32,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2024-12-17 13:50:32,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2024-12-17 13:50:32,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-12-17 13:50:49,925 WARN L286 SmtUtils]: Spent 9.19s on a formula simplification. DAG size of input: 130 DAG size of output: 51 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-17 13:50:56,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-17 13:51:18,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-17 13:52:10,945 WARN L286 SmtUtils]: Spent 17.44s on a formula simplification. DAG size of input: 134 DAG size of output: 79 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-17 13:52:42,805 WARN L286 SmtUtils]: Spent 23.28s on a formula simplification. DAG size of input: 86 DAG size of output: 74 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-17 13:53:01,966 WARN L286 SmtUtils]: Spent 11.77s on a formula simplification. DAG size of input: 106 DAG size of output: 82 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-17 13:53:22,455 WARN L286 SmtUtils]: Spent 11.22s on a formula simplification. DAG size of input: 126 DAG size of output: 74 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-17 13:53:54,027 WARN L286 SmtUtils]: Spent 15.32s on a formula simplification. DAG size of input: 120 DAG size of output: 79 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-17 13:54:07,836 WARN L286 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 117 DAG size of output: 74 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-17 13:54:39,312 WARN L286 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 103 DAG size of output: 74 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-17 13:55:16,557 WARN L286 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 97 DAG size of output: 69 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-17 13:59:27,283 WARN L286 SmtUtils]: Spent 11.29s on a formula simplification. DAG size of input: 102 DAG size of output: 29 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-17 14:00:24,305 WARN L286 SmtUtils]: Spent 46.99s on a formula simplification. DAG size of input: 100 DAG size of output: 85 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-17 14:00:35,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-17 14:00:37,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-17 14:00:38,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-17 14:00:42,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-17 14:01:23,836 WARN L286 SmtUtils]: Spent 27.64s on a formula simplification. DAG size of input: 94 DAG size of output: 83 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-17 14:01:26,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-17 14:01:55,653 WARN L286 SmtUtils]: Spent 21.92s on a formula simplification. DAG size of input: 82 DAG size of output: 71 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-17 14:01:56,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-17 14:01:57,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-17 14:02:01,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-17 14:02:02,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-17 14:02:05,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-17 14:02:08,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-17 14:02:45,881 WARN L286 SmtUtils]: Spent 23.19s on a formula simplification. DAG size of input: 89 DAG size of output: 78 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-17 14:02:48,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-17 14:02:50,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-17 14:03:14,892 WARN L286 SmtUtils]: Spent 16.88s on a formula simplification. DAG size of input: 71 DAG size of output: 63 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-17 14:03:16,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-17 14:04:00,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Killed by 15