/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy-NoForkJoinOpt-wrwc.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/join_assign_global.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-16 05:46:20,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-16 05:46:20,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-16 05:46:20,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-16 05:46:21,014 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy-NoForkJoinOpt-wrwc.epf [2022-03-16 05:46:21,033 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-16 05:46:21,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-16 05:46:21,033 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-16 05:46:21,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-16 05:46:21,034 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-16 05:46:21,034 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-16 05:46:21,035 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-16 05:46:21,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-16 05:46:21,035 INFO L138 SettingsManager]: * Use SBE=true [2022-03-16 05:46:21,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-16 05:46:21,035 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-16 05:46:21,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-16 05:46:21,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-16 05:46:21,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-16 05:46:21,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-16 05:46:21,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-16 05:46:21,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-16 05:46:21,035 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-16 05:46:21,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-16 05:46:21,036 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-16 05:46:21,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-16 05:46:21,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-16 05:46:21,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-16 05:46:21,036 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-16 05:46:21,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-16 05:46:21,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 05:46:21,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-16 05:46:21,036 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-16 05:46:21,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-16 05:46:21,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-16 05:46:21,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-16 05:46:21,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-16 05:46:21,037 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-16 05:46:21,037 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-16 05:46:21,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-16 05:46:21,037 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-16 05:46:21,037 INFO L138 SettingsManager]: * MCR: Overapproximate write-read-write conflicts=false [2022-03-16 05:46:21,037 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-16 05:46:21,037 INFO L138 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/UAutomizer-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-16 05:46:21,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-16 05:46:21,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-16 05:46:21,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-16 05:46:21,259 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-16 05:46:21,262 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-16 05:46:21,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/join_assign_global.bpl [2022-03-16 05:46:21,263 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/join_assign_global.bpl' [2022-03-16 05:46:21,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-16 05:46:21,280 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-16 05:46:21,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-16 05:46:21,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-16 05:46:21,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-16 05:46:21,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:21" (1/1) ... [2022-03-16 05:46:21,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:21" (1/1) ... [2022-03-16 05:46:21,317 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-16 05:46:21,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-16 05:46:21,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-16 05:46:21,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-16 05:46:21,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-16 05:46:21,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:21" (1/1) ... [2022-03-16 05:46:21,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:21" (1/1) ... [2022-03-16 05:46:21,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:21" (1/1) ... [2022-03-16 05:46:21,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:21" (1/1) ... [2022-03-16 05:46:21,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:21" (1/1) ... [2022-03-16 05:46:21,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:21" (1/1) ... [2022-03-16 05:46:21,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:21" (1/1) ... [2022-03-16 05:46:21,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-16 05:46:21,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-16 05:46:21,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-16 05:46:21,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-16 05:46:21,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:21" (1/1) ... [2022-03-16 05:46:21,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 05:46:21,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:46:21,359 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-16 05:46:21,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-16 05:46:21,390 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread0 given in one single declaration [2022-03-16 05:46:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-03-16 05:46:21,390 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-03-16 05:46:21,390 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-16 05:46:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-16 05:46:21,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-16 05:46:21,391 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-16 05:46:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-16 05:46:21,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-16 05:46:21,392 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-16 05:46:21,423 INFO L234 CfgBuilder]: Building ICFG [2022-03-16 05:46:21,424 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-16 05:46:21,458 INFO L275 CfgBuilder]: Performing block encoding [2022-03-16 05:46:21,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-16 05:46:21,463 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-16 05:46:21,464 INFO L202 PluginConnector]: Adding new model join_assign_global.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 05:46:21 BoogieIcfgContainer [2022-03-16 05:46:21,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-16 05:46:21,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-16 05:46:21,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-16 05:46:21,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-16 05:46:21,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 05:46:21" (1/2) ... [2022-03-16 05:46:21,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6faf6e40 and model type join_assign_global.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 05:46:21, skipping insertion in model container [2022-03-16 05:46:21,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 05:46:21" (2/2) ... [2022-03-16 05:46:21,471 INFO L111 eAbstractionObserver]: Analyzing ICFG join_assign_global.bpl [2022-03-16 05:46:21,474 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-16 05:46:21,474 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-16 05:46:21,474 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-16 05:46:21,474 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-16 05:46:21,486 WARN L322 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 05:46:21,486 WARN L322 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 05:46:21,489 WARN L322 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 05:46:21,492 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-16 05:46:21,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-16 05:46:21,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 05:46:21,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-03-16 05:46:21,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-03-16 05:46:21,557 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-16 05:46:21,567 INFO L339 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, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=false, mMcrOverapproximateWrwc=false [2022-03-16 05:46:21,567 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-16 05:46:21,609 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 7 transitions and produced 8 states. [2022-03-16 05:46:21,611 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 05:46:21,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 05:46:21,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1694694, now seen corresponding path program 1 times [2022-03-16 05:46:21,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 05:46:21,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750063778] [2022-03-16 05:46:21,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:46:21,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 05:46:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 05:46:21,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 05:46:21,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 05:46:21,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750063778] [2022-03-16 05:46:21,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750063778] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 05:46:21,699 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 05:46:21,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-16 05:46:21,700 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702741856] [2022-03-16 05:46:21,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 05:46:21,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-16 05:46:21,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 05:46:21,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-16 05:46:21,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-16 05:46:21,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:46:21,728 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 05:46:21,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-03-16 05:46:21,729 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 05:46:21,745 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 13 transitions and produced 12 states. [2022-03-16 05:46:21,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 05:46:21,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-16 05:46:21,745 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 05:46:21,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 05:46:21,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1052868128, now seen corresponding path program 1 times [2022-03-16 05:46:21,746 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 05:46:21,746 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232582797] [2022-03-16 05:46:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 05:46:21,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 05:46:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-16 05:46:21,753 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-16 05:46:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-16 05:46:21,766 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-16 05:46:21,767 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-16 05:46:21,768 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-16 05:46:21,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-16 05:46:21,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-16 05:46:21,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-16 05:46:21,773 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-16 05:46:21,776 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-16 05:46:21,776 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-16 05:46:21,781 INFO L202 PluginConnector]: Adding new model join_assign_global.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 05:46:21 BasicIcfg [2022-03-16 05:46:21,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-16 05:46:21,782 INFO L158 Benchmark]: Toolchain (without parser) took 501.55ms. Allocated memory is still 186.6MB. Free memory was 151.3MB in the beginning and 158.4MB in the end (delta: -7.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-16 05:46:21,782 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 186.6MB. Free memory was 152.3MB in the beginning and 152.2MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-16 05:46:21,783 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.49ms. Allocated memory is still 186.6MB. Free memory was 151.3MB in the beginning and 149.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-16 05:46:21,783 INFO L158 Benchmark]: Boogie Preprocessor took 10.41ms. Allocated memory is still 186.6MB. Free memory was 149.7MB in the beginning and 148.8MB in the end (delta: 968.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-16 05:46:21,783 INFO L158 Benchmark]: RCFGBuilder took 131.15ms. Allocated memory is still 186.6MB. Free memory was 148.8MB in the beginning and 141.1MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-16 05:46:21,784 INFO L158 Benchmark]: TraceAbstraction took 316.21ms. Allocated memory is still 186.6MB. Free memory was 140.6MB in the beginning and 158.4MB in the end (delta: -17.8MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-16 05:46:21,785 INFO L339 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 0.13ms. Allocated memory is still 186.6MB. Free memory was 152.3MB in the beginning and 152.2MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.49ms. Allocated memory is still 186.6MB. Free memory was 151.3MB in the beginning and 149.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.41ms. Allocated memory is still 186.6MB. Free memory was 149.7MB in the beginning and 148.8MB in the end (delta: 968.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 131.15ms. Allocated memory is still 186.6MB. Free memory was 148.8MB in the beginning and 141.1MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 316.21ms. Allocated memory is still 186.6MB. Free memory was 140.6MB in the beginning and 158.4MB in the end (delta: -17.8MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 20]: assertion can be violated assertion can be violated We found a FailurePath: [L17] FORK 0 fork 0 thread0(); [L18] FORK 0 fork 1, 1 thread1(); [L19] 0 x := 0; VAL [x=0] [L25] 1 z := 1; VAL [x=0, z=1] [L31] JOIN 1 join 0 assign x; VAL [x=1, z=1] [L20] 0 assert x == 0; VAL [x=1, z=1] - UnprovableResult [Line: 14]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 21 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-03-16 05:46:21,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-03-16 05:46:22,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...