/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-POR-NewStatesSleep-NoLbe.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-44898dd [2022-02-09 08:20:07,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-09 08:20:07,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-09 08:20:07,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-09 08:20:07,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-09 08:20:07,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-09 08:20:07,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-09 08:20:07,752 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-POR-NewStatesSleep-NoLbe.epf [2022-02-09 08:20:07,774 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-09 08:20:07,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-09 08:20:07,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-09 08:20:07,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-09 08:20:07,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-09 08:20:07,775 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-09 08:20:07,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-09 08:20:07,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-09 08:20:07,775 INFO L138 SettingsManager]: * Use SBE=true [2022-02-09 08:20:07,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-09 08:20:07,776 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-09 08:20:07,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-09 08:20:07,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-09 08:20:07,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-09 08:20:07,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-09 08:20:07,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-09 08:20:07,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-09 08:20:07,776 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-09 08:20:07,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-09 08:20:07,776 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-09 08:20:07,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-09 08:20:07,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-09 08:20:07,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-09 08:20:07,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-09 08:20:07,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-09 08:20:07,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 08:20:07,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-09 08:20:07,777 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-09 08:20:07,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-09 08:20:07,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-09 08:20:07,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-09 08:20:07,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-09 08:20:07,777 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-09 08:20:07,778 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-09 08:20:07,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-09 08:20:07,778 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-02-09 08:20:07,778 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-09 08:20:07,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-09 08:20:07,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-09 08:20:07,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-09 08:20:07,990 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-09 08:20:07,993 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-09 08:20:07,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/join_assign_global.bpl [2022-02-09 08:20:07,994 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/join_assign_global.bpl' [2022-02-09 08:20:08,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-09 08:20:08,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-09 08:20:08,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-09 08:20:08,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-09 08:20:08,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-09 08:20:08,025 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 09.02 08:20:08" (1/1) ... [2022-02-09 08:20:08,030 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 09.02 08:20:08" (1/1) ... [2022-02-09 08:20:08,035 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-09 08:20:08,036 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-09 08:20:08,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-09 08:20:08,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-09 08:20:08,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-09 08:20:08,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:08" (1/1) ... [2022-02-09 08:20:08,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:08" (1/1) ... [2022-02-09 08:20:08,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:08" (1/1) ... [2022-02-09 08:20:08,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:08" (1/1) ... [2022-02-09 08:20:08,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:08" (1/1) ... [2022-02-09 08:20:08,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:08" (1/1) ... [2022-02-09 08:20:08,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:08" (1/1) ... [2022-02-09 08:20:08,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-09 08:20:08,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-09 08:20:08,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-09 08:20:08,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-09 08:20:08,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:08" (1/1) ... [2022-02-09 08:20:08,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 08:20:08,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 08:20:08,073 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) [2022-02-09 08:20:08,109 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 [2022-02-09 08:20:08,122 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread0 given in one single declaration [2022-02-09 08:20:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-02-09 08:20:08,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-02-09 08:20:08,123 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-09 08:20:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-09 08:20:08,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-09 08:20:08,123 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-09 08:20:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-09 08:20:08,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-09 08:20:08,124 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-09 08:20:08,154 INFO L234 CfgBuilder]: Building ICFG [2022-02-09 08:20:08,155 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-09 08:20:08,205 INFO L275 CfgBuilder]: Performing block encoding [2022-02-09 08:20:08,211 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-09 08:20:08,212 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-09 08:20:08,215 INFO L202 PluginConnector]: Adding new model join_assign_global.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 08:20:08 BoogieIcfgContainer [2022-02-09 08:20:08,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-09 08:20:08,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-09 08:20:08,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-09 08:20:08,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-09 08:20:08,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:20:08" (1/2) ... [2022-02-09 08:20:08,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d1aff8 and model type join_assign_global.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 08:20:08, skipping insertion in model container [2022-02-09 08:20:08,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "join_assign_global.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 08:20:08" (2/2) ... [2022-02-09 08:20:08,222 INFO L111 eAbstractionObserver]: Analyzing ICFG join_assign_global.bpl [2022-02-09 08:20:08,228 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-09 08:20:08,229 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-09 08:20:08,229 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-09 08:20:08,229 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-09 08:20:08,252 WARN L322 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:20:08,253 WARN L322 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:20:08,260 WARN L322 ript$VariableManager]: TermVariabe thread0Thread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:20:08,268 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-09 08:20:08,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-09 08:20:08,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 08:20:08,312 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) [2022-02-09 08:20:08,321 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 [2022-02-09 08:20:08,345 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 08:20:08,352 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 [2022-02-09 08:20:08,353 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-09 08:20:08,400 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 08:20:08,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 08:20:08,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1694694, now seen corresponding path program 1 times [2022-02-09 08:20:08,410 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 08:20:08,411 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77017548] [2022-02-09 08:20:08,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 08:20:08,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 08:20:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 08:20:08,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 08:20:08,547 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 08:20:08,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77017548] [2022-02-09 08:20:08,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77017548] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 08:20:08,547 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 08:20:08,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-09 08:20:08,548 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113644598] [2022-02-09 08:20:08,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 08:20:08,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-09 08:20:08,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 08:20:08,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-09 08:20:08,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 08:20:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 08:20:08,582 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 08:20:08,583 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) [2022-02-09 08:20:08,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 08:20:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-09 08:20:08,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-09 08:20:08,652 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 08:20:08,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 08:20:08,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1052868128, now seen corresponding path program 1 times [2022-02-09 08:20:08,653 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 08:20:08,653 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624531100] [2022-02-09 08:20:08,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 08:20:08,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 08:20:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 08:20:08,660 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-09 08:20:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 08:20:08,689 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-09 08:20:08,689 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-09 08:20:08,690 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-09 08:20:08,691 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-09 08:20:08,691 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-09 08:20:08,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-09 08:20:08,696 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-09 08:20:08,728 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-09 08:20:08,728 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-09 08:20:08,735 INFO L202 PluginConnector]: Adding new model join_assign_global.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.02 08:20:08 BasicIcfg [2022-02-09 08:20:08,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-09 08:20:08,736 INFO L158 Benchmark]: Toolchain (without parser) took 722.33ms. Allocated memory was 188.7MB in the beginning and 243.3MB in the end (delta: 54.5MB). Free memory was 147.2MB in the beginning and 210.4MB in the end (delta: -63.2MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 08:20:08,736 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 148.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 08:20:08,737 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.72ms. Allocated memory is still 188.7MB. Free memory was 147.0MB in the beginning and 145.5MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-09 08:20:08,737 INFO L158 Benchmark]: Boogie Preprocessor took 9.71ms. Allocated memory is still 188.7MB. Free memory was 145.5MB in the beginning and 144.7MB in the end (delta: 780.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 08:20:08,737 INFO L158 Benchmark]: RCFGBuilder took 167.63ms. Allocated memory is still 188.7MB. Free memory was 144.6MB in the beginning and 137.1MB in the end (delta: 7.5MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-02-09 08:20:08,738 INFO L158 Benchmark]: TraceAbstraction took 518.56ms. Allocated memory was 188.7MB in the beginning and 243.3MB in the end (delta: 54.5MB). Free memory was 136.6MB in the beginning and 210.4MB in the end (delta: -73.8MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 08:20:08,739 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 0.14ms. Allocated memory is still 188.7MB. Free memory is still 148.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.72ms. Allocated memory is still 188.7MB. Free memory was 147.0MB in the beginning and 145.5MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 9.71ms. Allocated memory is still 188.7MB. Free memory was 145.5MB in the beginning and 144.7MB in the end (delta: 780.6kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 167.63ms. Allocated memory is still 188.7MB. Free memory was 144.6MB in the beginning and 137.1MB in the end (delta: 7.5MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 518.56ms. Allocated memory was 188.7MB in the beginning and 243.3MB in the end (delta: 54.5MB). Free memory was 136.6MB in the beginning and 210.4MB in the end (delta: -73.8MB). 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: 13, positive: 11, positive conditional: 11, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 12, positive: 11, positive conditional: 11, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 12, positive: 11, positive conditional: 11, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 13, positive: 11, positive conditional: 4, positive unconditional: 7, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 13, positive: 11, positive conditional: 4, positive unconditional: 7, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 13, positive: 11, positive conditional: 4, positive unconditional: 7, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 10, positive: 8, positive conditional: 3, positive unconditional: 5, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 10, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 51, positive: 48, positive conditional: 48, positive unconditional: 0, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13, positive: 3, positive conditional: 1, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 10, unknown conditional: 4, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 10, Positive cache size: 8, Positive conditional cache size: 3, Positive unconditional cache size: 5, Negative cache size: 2, Negative conditional cache size: 1, Negative unconditional cache size: 1, Eliminated conditions: 0, Maximal queried relation: 1, Independence queries for same thread: 1 - 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: 0.4s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.1s, 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! [2022-02-09 08:20:08,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2022-02-09 08:20:08,991 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...