/root/.sdkman/candidates/java/current/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../benchexec/../../../trunk/examples/settings/gemcutter/NewStatesSleep.epf --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking DFS --traceabstraction.criterion.for.conditional.commutativity.checking RANDOM --traceabstraction.probability.for.random.criterion 20 --traceabstraction.seed.for.random.criterion 213 -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/buffer-mult-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.conditional-comm-3774817-m [2024-04-06 21:30:37,177 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-04-06 21:30:37,243 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../benchexec/../../../trunk/examples/settings/gemcutter/NewStatesSleep.epf [2024-04-06 21:30:37,248 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-04-06 21:30:37,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-04-06 21:30:37,270 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-04-06 21:30:37,271 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-04-06 21:30:37,271 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-04-06 21:30:37,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-04-06 21:30:37,275 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-04-06 21:30:37,276 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-04-06 21:30:37,276 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-04-06 21:30:37,276 INFO L153 SettingsManager]: * Use SBE=true [2024-04-06 21:30:37,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-04-06 21:30:37,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-04-06 21:30:37,278 INFO L153 SettingsManager]: * sizeof long=4 [2024-04-06 21:30:37,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-04-06 21:30:37,278 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-04-06 21:30:37,278 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-04-06 21:30:37,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-04-06 21:30:37,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-04-06 21:30:37,279 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-04-06 21:30:37,279 INFO L153 SettingsManager]: * sizeof long double=12 [2024-04-06 21:30:37,279 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-04-06 21:30:37,280 INFO L153 SettingsManager]: * Use constant arrays=true [2024-04-06 21:30:37,280 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-04-06 21:30:37,280 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-04-06 21:30:37,280 INFO L153 SettingsManager]: * To the following directory=./dump/ [2024-04-06 21:30:37,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-04-06 21:30:37,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-04-06 21:30:37,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-04-06 21:30:37,282 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-04-06 21:30:37,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-04-06 21:30:37,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-04-06 21:30:37,282 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2024-04-06 21:30:37,282 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-04-06 21:30:37,282 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-04-06 21:30:37,282 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-04-06 21:30:37,282 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-04-06 21:30:37,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: DFS Order used in POR -> LOOP_LOCKSTEP Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional conditional commutativity checking -> DFS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Criterion for conditional commutativity checking -> RANDOM Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: probability for random criterion as percentage -> 20 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: seed for random criterion -> 213 [2024-04-06 21:30:37,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-04-06 21:30:37,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-04-06 21:30:37,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-04-06 21:30:37,527 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2024-04-06 21:30:37,532 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2024-04-06 21:30:37,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/buffer-mult-alt.wvr.bpl [2024-04-06 21:30:37,534 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/buffer-mult-alt.wvr.bpl' [2024-04-06 21:30:37,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-04-06 21:30:37,570 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-04-06 21:30:37,572 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-04-06 21:30:37,572 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-04-06 21:30:37,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-04-06 21:30:37,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.04 09:30:37" (1/1) ... [2024-04-06 21:30:37,603 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.04 09:30:37" (1/1) ... [2024-04-06 21:30:37,611 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-04-06 21:30:37,613 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-04-06 21:30:37,615 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-04-06 21:30:37,615 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-04-06 21:30:37,615 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-04-06 21:30:37,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.04 09:30:37" (1/1) ... [2024-04-06 21:30:37,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.04 09:30:37" (1/1) ... [2024-04-06 21:30:37,623 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.04 09:30:37" (1/1) ... [2024-04-06 21:30:37,623 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.04 09:30:37" (1/1) ... [2024-04-06 21:30:37,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.04 09:30:37" (1/1) ... [2024-04-06 21:30:37,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.04 09:30:37" (1/1) ... [2024-04-06 21:30:37,631 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.04 09:30:37" (1/1) ... [2024-04-06 21:30:37,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.04 09:30:37" (1/1) ... [2024-04-06 21:30:37,632 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-04-06 21:30:37,633 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-04-06 21:30:37,633 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-04-06 21:30:37,633 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-04-06 21:30:37,634 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.04 09:30:37" (1/1) ... [2024-04-06 21:30:37,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-04-06 21:30:37,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-04-06 21:30:37,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-04-06 21:30:37,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-04-06 21:30:37,710 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2024-04-06 21:30:37,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-04-06 21:30:37,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-04-06 21:30:37,710 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2024-04-06 21:30:37,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-04-06 21:30:37,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-04-06 21:30:37,710 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2024-04-06 21:30:37,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-04-06 21:30:37,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-04-06 21:30:37,711 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2024-04-06 21:30:37,711 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-04-06 21:30:37,711 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-04-06 21:30:37,711 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2024-04-06 21:30:37,711 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-04-06 21:30:37,711 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-04-06 21:30:37,712 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-04-06 21:30:37,753 INFO L241 CfgBuilder]: Building ICFG [2024-04-06 21:30:37,755 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-04-06 21:30:37,844 INFO L282 CfgBuilder]: Performing block encoding [2024-04-06 21:30:37,865 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-04-06 21:30:37,865 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2024-04-06 21:30:37,866 INFO L201 PluginConnector]: Adding new model buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 09:30:37 BoogieIcfgContainer [2024-04-06 21:30:37,866 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-04-06 21:30:37,868 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-04-06 21:30:37,868 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-04-06 21:30:37,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-04-06 21:30:37,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.04 09:30:37" (1/2) ... [2024-04-06 21:30:37,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1416b8b and model type buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 09:30:37, skipping insertion in model container [2024-04-06 21:30:37,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 09:30:37" (2/2) ... [2024-04-06 21:30:37,882 INFO L112 eAbstractionObserver]: Analyzing ICFG buffer-mult-alt.wvr.bpl [2024-04-06 21:30:37,888 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-04-06 21:30:37,895 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-04-06 21:30:37,896 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-04-06 21:30:37,897 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-04-06 21:30:37,943 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-04-06 21:30:37,978 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-04-06 21:30:37,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-04-06 21:30:37,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-04-06 21:30:37,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-04-06 21:30:37,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-04-06 21:30:38,015 INFO L184 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-04-06 21:30:38,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-04-06 21:30:38,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-04-06 21:30:38,037 INFO L357 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, mHoare=true, 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;@15aad50a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=DFS, mConComCheckerCriterion=RANDOM, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=20, mConComCheckerRandomSeed=213 [2024-04-06 21:30:38,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-04-06 21:30:38,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-04-06 21:30:38,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-04-06 21:30:38,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1916109299, now seen corresponding path program 1 times [2024-04-06 21:30:38,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-04-06 21:30:38,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40892111] [2024-04-06 21:30:38,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-04-06 21:30:38,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-04-06 21:30:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-04-06 21:30:38,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-04-06 21:30:38,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-04-06 21:30:38,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40892111] [2024-04-06 21:30:38,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40892111] provided 1 perfect and 0 imperfect interpolant sequences [2024-04-06 21:30:38,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-04-06 21:30:38,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-04-06 21:30:38,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570947743] [2024-04-06 21:30:38,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-04-06 21:30:38,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-04-06 21:30:38,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-04-06 21:30:38,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-04-06 21:30:38,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-04-06 21:30:38,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-04-06 21:30:38,279 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-04-06 21:30:38,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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) [2024-04-06 21:30:38,280 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-04-06 21:30:38,445 INFO L85 PathProgramCache]: Analyzing trace with hash 174384018, now seen corresponding path program 1 times [2024-04-06 21:30:38,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-04-06 21:30:38,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-04-06 21:30:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-04-06 21:30:38,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-04-06 21:30:38,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-04-06 21:30:38,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-04-06 21:30:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-04-06 21:30:38,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-04-06 21:30:38,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-04-06 21:30:38,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-04-06 21:30:38,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,SelfDestructingSolverStorable1,SelfDestructingSolverStorable0 [2024-04-06 21:30:38,587 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker@70bffcf7 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.MonolithicHoareTripleChecker.isInductive(MonolithicHoareTripleChecker.java:174) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.MonolithicHoareTripleChecker.isInductive(MonolithicHoareTripleChecker.java:156) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.MonolithicHoareTripleChecker.checkInternal(MonolithicHoareTripleChecker.java:83) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:202) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:202) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.LoopLockstepOrder$WrapperAutomaton.internalSuccessors(LoopLockstepOrder.java:196) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.LoopLockstepOrder$WrapperAutomaton.internalSuccessors(LoopLockstepOrder.java:1) at de.uni_freiburg.informatik.ultimate.automata.partialorder.MinimalSleepSetReduction.internalSuccessors(MinimalSleepSetReduction.java:169) at de.uni_freiburg.informatik.ultimate.automata.nestedword.INwaOutgoingLetterAndTransitionProvider.lambda$0(INwaOutgoingLetterAndTransitionProvider.java:123) at de.uni_freiburg.informatik.ultimate.util.datastructures.relation.NestedIterator.nextLetter(NestedIterator.java:69) at de.uni_freiburg.informatik.ultimate.util.datastructures.relation.NestedIterator.next(NestedIterator.java:94) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.ConditionalCommutativityCheckerVisitor.discoverState(ConditionalCommutativityCheckerVisitor.java:183) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.ConditionalCommutativityCheckerVisitor.discoverState(ConditionalCommutativityCheckerVisitor.java:1) at de.uni_freiburg.informatik.ultimate.automata.partialorder.visitors.DeadEndOptimizingSearchVisitor.discoverState(DeadEndOptimizingSearchVisitor.java:73) at de.uni_freiburg.informatik.ultimate.automata.partialorder.DepthFirstTraversal.visitState(DepthFirstTraversal.java:222) at de.uni_freiburg.informatik.ultimate.automata.partialorder.DepthFirstTraversal.traverse(DepthFirstTraversal.java:165) at de.uni_freiburg.informatik.ultimate.automata.partialorder.DepthFirstTraversal.(DepthFirstTraversal.java:98) at de.uni_freiburg.informatik.ultimate.automata.partialorder.DepthFirstTraversal.traverse(DepthFirstTraversal.java:122) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.PartialOrderReductionFacade.apply(PartialOrderReductionFacade.java:329) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.PartialOrderCegarLoop.isAbstractionEmpty(PartialOrderCegarLoop.java:362) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:466) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-04-06 21:30:38,591 INFO L158 Benchmark]: Toolchain (without parser) took 1019.56ms. Allocated memory is still 270.5MB. Free memory was 242.0MB in the beginning and 184.4MB in the end (delta: 57.6MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. [2024-04-06 21:30:38,591 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.50ms. Allocated memory is still 270.5MB. Free memory is still 238.2MB. There was no memory consumed. Max. memory is 8.0GB. [2024-04-06 21:30:38,591 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.01ms. Allocated memory is still 270.5MB. Free memory was 241.9MB in the beginning and 245.4MB in the end (delta: -3.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-04-06 21:30:38,592 INFO L158 Benchmark]: Boogie Preprocessor took 17.43ms. Allocated memory is still 270.5MB. Free memory was 245.2MB in the beginning and 244.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2024-04-06 21:30:38,592 INFO L158 Benchmark]: RCFGBuilder took 233.39ms. Allocated memory is still 270.5MB. Free memory was 244.1MB in the beginning and 231.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2024-04-06 21:30:38,593 INFO L158 Benchmark]: TraceAbstraction took 721.30ms. Allocated memory is still 270.5MB. Free memory was 230.5MB in the beginning and 184.4MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. [2024-04-06 21:30:38,595 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.50ms. Allocated memory is still 270.5MB. Free memory is still 238.2MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.01ms. Allocated memory is still 270.5MB. Free memory was 241.9MB in the beginning and 245.4MB in the end (delta: -3.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.43ms. Allocated memory is still 270.5MB. Free memory was 245.2MB in the beginning and 244.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 233.39ms. Allocated memory is still 270.5MB. Free memory was 244.1MB in the beginning and 231.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 721.30ms. Allocated memory is still 270.5MB. Free memory was 230.5MB in the beginning and 184.4MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker@70bffcf7 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker@70bffcf7: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-04-06 21:30:38,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2024-04-06 21:30:38,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...