./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/mult-flipped-dist.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/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.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 18:51:55,679 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-23 18:51:55,765 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-01-23 18:51:55,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-23 18:51:55,772 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-23 18:51:55,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-23 18:51:55,817 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-23 18:51:55,817 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-23 18:51:55,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-23 18:51:55,817 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-23 18:51:55,817 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-23 18:51:55,818 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-23 18:51:55,818 INFO L153 SettingsManager]: * Use SBE=true [2025-01-23 18:51:55,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-23 18:51:55,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-23 18:51:55,818 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-23 18:51:55,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-23 18:51:55,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-23 18:51:55,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-23 18:51:55,818 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-23 18:51:55,818 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-23 18:51:55,818 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-23 18:51:55,818 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-23 18:51:55,818 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-23 18:51:55,818 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-23 18:51:55,818 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-23 18:51:55,827 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-23 18:51:55,827 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-23 18:51:55,827 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-23 18:51:55,827 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-23 18:51:55,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-01-23 18:51:55,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-23 18:51:55,827 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-23 18:51:55,827 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-23 18:51:55,827 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-01-23 18:51:55,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-23 18:51:55,827 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-23 18:51:55,827 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-01-23 18:51:55,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-23 18:51:55,827 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-23 18:51:55,827 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-01-23 18:51:55,827 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-01-23 18:51:55,827 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-01-23 18:51:55,827 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: 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 18:51:56,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-23 18:51:56,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-23 18:51:56,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-23 18:51:56,125 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-23 18:51:56,125 INFO L274 PluginConnector]: CDTParser initialized [2025-01-23 18:51:56,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c [2025-01-23 18:51:57,297 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/96211c165/c30a045d383e4e80ba6bcd91ce62f29d/FLAGc659d9150 [2025-01-23 18:51:57,486 INFO L384 CDTParser]: Found 1 translation units. [2025-01-23 18:51:57,486 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c [2025-01-23 18:51:57,492 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/96211c165/c30a045d383e4e80ba6bcd91ce62f29d/FLAGc659d9150 [2025-01-23 18:51:57,504 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/96211c165/c30a045d383e4e80ba6bcd91ce62f29d [2025-01-23 18:51:57,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-23 18:51:57,507 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-23 18:51:57,508 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-23 18:51:57,509 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-23 18:51:57,512 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-23 18:51:57,513 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 06:51:57" (1/1) ... [2025-01-23 18:51:57,514 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d442189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 06:51:57, skipping insertion in model container [2025-01-23 18:51:57,514 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 06:51:57" (1/1) ... [2025-01-23 18:51:57,527 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-23 18:51:57,657 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] [2025-01-23 18:51:57,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-23 18:51:57,666 INFO L200 MainTranslator]: Completed pre-run [2025-01-23 18:51:57,705 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] [2025-01-23 18:51:57,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-23 18:51:57,717 INFO L204 MainTranslator]: Completed translation [2025-01-23 18:51:57,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 06:51:57 WrapperNode [2025-01-23 18:51:57,718 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-23 18:51:57,719 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-23 18:51:57,719 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-23 18:51:57,719 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-23 18:51:57,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 06:51:57" (1/1) ... [2025-01-23 18:51:57,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 06:51:57" (1/1) ... [2025-01-23 18:51:57,739 INFO L138 Inliner]: procedures = 21, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2025-01-23 18:51:57,739 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-23 18:51:57,740 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-23 18:51:57,740 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-23 18:51:57,740 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-23 18:51:57,744 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 06:51:57" (1/1) ... [2025-01-23 18:51:57,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 06:51:57" (1/1) ... [2025-01-23 18:51:57,745 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 06:51:57" (1/1) ... [2025-01-23 18:51:57,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 06:51:57" (1/1) ... [2025-01-23 18:51:57,748 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 06:51:57" (1/1) ... [2025-01-23 18:51:57,749 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 06:51:57" (1/1) ... [2025-01-23 18:51:57,750 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 06:51:57" (1/1) ... [2025-01-23 18:51:57,751 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 06:51:57" (1/1) ... [2025-01-23 18:51:57,752 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 06:51:57" (1/1) ... [2025-01-23 18:51:57,752 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-23 18:51:57,753 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-23 18:51:57,753 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-23 18:51:57,753 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-23 18:51:57,754 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 06:51:57" (1/1) ... [2025-01-23 18:51:57,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-01-23 18:51:57,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 18:51:57,782 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 18:51:57,788 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 [2025-01-23 18:51:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-23 18:51:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-23 18:51:57,819 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-23 18:51:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-23 18:51:57,819 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-23 18:51:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-23 18:51:57,819 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-23 18:51:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-23 18:51:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-23 18:51:57,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-23 18:51:57,821 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 18:51:57,898 INFO L234 CfgBuilder]: Building ICFG [2025-01-23 18:51:57,899 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-23 18:51:58,069 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-23 18:51:58,069 INFO L283 CfgBuilder]: Performing block encoding [2025-01-23 18:51:58,203 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-23 18:51:58,203 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-23 18:51:58,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 06:51:58 BoogieIcfgContainer [2025-01-23 18:51:58,203 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-23 18:51:58,205 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-23 18:51:58,205 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-23 18:51:58,209 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-23 18:51:58,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 06:51:57" (1/3) ... [2025-01-23 18:51:58,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3875582e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 06:51:58, skipping insertion in model container [2025-01-23 18:51:58,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 06:51:57" (2/3) ... [2025-01-23 18:51:58,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3875582e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 06:51:58, skipping insertion in model container [2025-01-23 18:51:58,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 06:51:58" (3/3) ... [2025-01-23 18:51:58,212 INFO L128 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2025-01-23 18:51:58,222 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-23 18:51:58,224 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. [2025-01-23 18:51:58,224 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-23 18:51:58,276 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-23 18:51:58,304 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-23 18:51:58,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-01-23 18:51:58,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 18:51:58,307 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 18:51:58,309 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 18:51:58,386 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-01-23 18:51:58,400 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-01-23 18:51:58,406 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;@6171c264, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-23 18:51:58,406 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-23 18:51:58,649 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 18:51:58,649 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 18:51:58,650 INFO L139 ounterexampleChecker]: Examining path program with hash 1787239335, occurence #1 [2025-01-23 18:51:58,650 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 18:51:58,650 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 18:51:58,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 18:51:58,654 INFO L85 PathProgramCache]: Analyzing trace with hash 896869224, now seen corresponding path program 1 times [2025-01-23 18:51:58,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 18:51:58,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872885906] [2025-01-23 18:51:58,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 18:51:58,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 18:51:58,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-23 18:51:58,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-23 18:51:58,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 18:51:58,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 18:51:59,013 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 18:51:59,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 18:51:59,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872885906] [2025-01-23 18:51:59,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872885906] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-23 18:51:59,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-23 18:51:59,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-23 18:51:59,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723251405] [2025-01-23 18:51:59,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-23 18:51:59,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-23 18:51:59,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 18:51:59,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-23 18:51:59,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-23 18:51:59,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 18:51:59,061 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 18:51:59,062 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) [2025-01-23 18:51:59,062 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 18:51:59,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 18:51:59,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-23 18:51:59,182 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 18:51:59,182 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 18:51:59,182 INFO L139 ounterexampleChecker]: Examining path program with hash 1787239335, occurence #2 [2025-01-23 18:51:59,182 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 18:51:59,182 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1 [2025-01-23 18:51:59,194 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 18:51:59,194 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-01-23 18:51:59,195 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 18:51:59,195 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 7 [2025-01-23 18:51:59,195 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 18:51:59,195 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 19 [2025-01-23 18:51:59,195 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 18:51:59,195 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 18:51:59,195 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 18:51:59,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 18:51:59,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1546251922, now seen corresponding path program 1 times [2025-01-23 18:51:59,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 18:51:59,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215655776] [2025-01-23 18:51:59,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 18:51:59,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 18:51:59,209 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-23 18:51:59,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-23 18:51:59,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 18:51:59,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 18:51:59,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 18:51:59,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 18:51:59,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215655776] [2025-01-23 18:51:59,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215655776] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 18:51:59,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320438848] [2025-01-23 18:51:59,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 18:51:59,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 18:51:59,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 18:51:59,485 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 18:51:59,487 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 18:51:59,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-23 18:51:59,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-23 18:51:59,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 18:51:59,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 18:51:59,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-23 18:51:59,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 18:51:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 18:51:59,682 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 18:51:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 18:51:59,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320438848] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 18:51:59,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 18:51:59,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2025-01-23 18:51:59,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441692887] [2025-01-23 18:51:59,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 18:51:59,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-23 18:51:59,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 18:51:59,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-23 18:51:59,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2025-01-23 18:51:59,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 18:51:59,884 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 18:51:59,885 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) [2025-01-23 18:51:59,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 18:51:59,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 18:52:13,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 18:52:13,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-01-23 18:52:13,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-23 18:52:13,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 18:52:13,395 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 18:52:13,395 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 18:52:13,396 INFO L139 ounterexampleChecker]: Examining path program with hash 1865210532, occurence #1 [2025-01-23 18:52:13,396 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 18:52:13,396 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 18:52:13,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 18:52:13,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1846275120, now seen corresponding path program 2 times [2025-01-23 18:52:13,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 18:52:13,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936622790] [2025-01-23 18:52:13,396 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-23 18:52:13,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 18:52:13,402 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-23 18:52:13,416 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-23 18:52:13,416 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-23 18:52:13,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 18:52:13,746 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 18:52:13,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 18:52:13,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936622790] [2025-01-23 18:52:13,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936622790] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 18:52:13,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886415034] [2025-01-23 18:52:13,747 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-23 18:52:13,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 18:52:13,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 18:52:13,750 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 18:52:13,751 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 18:52:13,779 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-23 18:52:13,796 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-23 18:52:13,796 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-23 18:52:13,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 18:52:13,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-23 18:52:13,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 18:52:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 18:52:13,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 18:52:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 18:52:14,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886415034] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 18:52:14,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 18:52:14,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2025-01-23 18:52:14,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886923511] [2025-01-23 18:52:14,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 18:52:14,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-01-23 18:52:14,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 18:52:14,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-01-23 18:52:14,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=750, Unknown=0, NotChecked=0, Total=930 [2025-01-23 18:52:14,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 18:52:14,336 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 18:52:14,336 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) [2025-01-23 18:52:14,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 18:52:14,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2025-01-23 18:52:14,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 18:52:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 18:52:16,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-01-23 18:52:16,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-23 18:52:16,289 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 18:52:16,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 18:52:16,483 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 18:52:16,483 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 18:52:16,483 INFO L139 ounterexampleChecker]: Examining path program with hash 1865210532, occurence #2 [2025-01-23 18:52:16,483 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 18:52:16,483 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1 [2025-01-23 18:52:16,483 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 18:52:16,484 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-01-23 18:52:16,484 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 18:52:16,484 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 7 [2025-01-23 18:52:16,484 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 18:52:16,484 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 48 [2025-01-23 18:52:16,484 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 18:52:16,484 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 18:52:16,484 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 18:52:16,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 18:52:16,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1714651920, now seen corresponding path program 3 times [2025-01-23 18:52:16,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 18:52:16,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227938216] [2025-01-23 18:52:16,486 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-23 18:52:16,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 18:52:16,493 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 52 statements into 12 equivalence classes. [2025-01-23 18:52:16,581 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 52 of 52 statements. [2025-01-23 18:52:16,582 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-23 18:52:16,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 18:52:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 18:52:17,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 18:52:17,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227938216] [2025-01-23 18:52:17,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227938216] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 18:52:17,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480371908] [2025-01-23 18:52:17,798 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-23 18:52:17,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 18:52:17,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 18:52:17,800 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 18:52:17,801 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 18:52:17,830 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 52 statements into 12 equivalence classes. [2025-01-23 18:52:17,869 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 52 of 52 statements. [2025-01-23 18:52:17,869 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-23 18:52:17,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 18:52:17,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-01-23 18:52:17,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 18:52:18,783 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 18:52:18,783 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 18:52:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 18:52:20,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480371908] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 18:52:20,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 18:52:20,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 78 [2025-01-23 18:52:20,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763903225] [2025-01-23 18:52:20,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 18:52:20,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2025-01-23 18:52:20,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 18:52:20,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2025-01-23 18:52:20,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=5407, Unknown=0, NotChecked=0, Total=6006 [2025-01-23 18:52:20,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 18:52:20,354 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 18:52:20,354 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) [2025-01-23 18:52:20,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 18:52:20,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 38 states. [2025-01-23 18:52:20,354 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-01-23 18:52:20,355 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 18:52:37,272 WARN L286 SmtUtils]: Spent 8.73s 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) [2025-01-23 18:52:47,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 18:53:55,178 WARN L286 SmtUtils]: Spent 15.62s 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) [2025-01-23 18:54:25,780 WARN L286 SmtUtils]: Spent 23.68s 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) [2025-01-23 18:54:51,520 WARN L286 SmtUtils]: Spent 15.87s 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) [2025-01-23 18:55:11,127 WARN L286 SmtUtils]: Spent 10.88s 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) [2025-01-23 18:55:41,240 WARN L286 SmtUtils]: Spent 14.97s 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) [2025-01-23 18:55:55,410 WARN L286 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 117 DAG size of output: 71 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 18:56:31,937 WARN L286 SmtUtils]: Spent 6.71s 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) [2025-01-23 18:56:45,961 WARN L286 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 111 DAG size of output: 69 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 18:57:14,811 WARN L286 SmtUtils]: Spent 5.81s 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) [2025-01-23 18:57:27,260 WARN L286 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 105 DAG size of output: 63 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 18:57:52,877 WARN L286 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 91 DAG size of output: 63 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 19:01:09,799 WARN L286 SmtUtils]: Spent 14.51s 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) [2025-01-23 19:02:03,518 WARN L286 SmtUtils]: Spent 43.73s on a formula simplification. DAG size of input: 100 DAG size of output: 83 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 19:02:13,660 WARN L286 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 91 DAG size of output: 18 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 19:02:16,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 19:02:17,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 19:02:20,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 19:02:22,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 19:02:24,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 19:02:25,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 19:03:00,106 WARN L286 SmtUtils]: Spent 22.81s on a formula simplification. DAG size of input: 92 DAG size of output: 81 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 19:03:02,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 19:03:31,247 WARN L286 SmtUtils]: Spent 21.26s 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) [2025-01-23 19:03:33,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 19:03:35,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 19:03:37,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 19:03:39,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 19:03:42,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 19:03:44,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 19:03:46,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 19:04:15,108 WARN L286 SmtUtils]: Spent 15.96s on a formula simplification. DAG size of input: 86 DAG size of output: 75 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 19:04:18,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-23 19:04:31,048 WARN L286 SmtUtils]: Spent 8.15s on a formula simplification. DAG size of input: 47 DAG size of output: 42 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-23 19:04:33,084 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 [] Killed by 15