/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-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Unsafe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-16 21:28:12,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-16 21:28:12,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-16 21:28:12,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-16 21:28:12,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-16 21:28:12,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-16 21:28:12,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-16 21:28:12,636 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-MCRwithoutDepranks-Lazy.epf [2022-03-16 21:28:12,664 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-16 21:28:12,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-16 21:28:12,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-16 21:28:12,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-16 21:28:12,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-16 21:28:12,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-16 21:28:12,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-16 21:28:12,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-16 21:28:12,666 INFO L138 SettingsManager]: * Use SBE=true [2022-03-16 21:28:12,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-16 21:28:12,666 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-16 21:28:12,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-16 21:28:12,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-16 21:28:12,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-16 21:28:12,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-16 21:28:12,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-16 21:28:12,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-16 21:28:12,666 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-16 21:28:12,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-16 21:28:12,667 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-16 21:28:12,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-16 21:28:12,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-16 21:28:12,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-16 21:28:12,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-16 21:28:12,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-16 21:28:12,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 21:28:12,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-16 21:28:12,667 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-16 21:28:12,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-16 21:28:12,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-16 21:28:12,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-16 21:28:12,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-16 21:28:12,668 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-16 21:28:12,668 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-16 21:28:12,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-16 21:28:12,668 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-03-16 21:28:12,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-16 21:28:12,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-16 21:28:12,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-16 21:28:12,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-16 21:28:12,910 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-16 21:28:12,928 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-16 21:28:12,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Unsafe.bpl [2022-03-16 21:28:12,929 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Unsafe.bpl' [2022-03-16 21:28:12,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-16 21:28:12,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-16 21:28:12,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-16 21:28:12,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-16 21:28:12,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-16 21:28:12,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:12" (1/1) ... [2022-03-16 21:28:12,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:12" (1/1) ... [2022-03-16 21:28:12,966 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-16 21:28:12,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-16 21:28:12,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-16 21:28:12,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-16 21:28:12,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-16 21:28:12,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:12" (1/1) ... [2022-03-16 21:28:12,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:12" (1/1) ... [2022-03-16 21:28:12,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:12" (1/1) ... [2022-03-16 21:28:12,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:12" (1/1) ... [2022-03-16 21:28:12,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:12" (1/1) ... [2022-03-16 21:28:12,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:12" (1/1) ... [2022-03-16 21:28:12,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:12" (1/1) ... [2022-03-16 21:28:12,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-16 21:28:12,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-16 21:28:12,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-16 21:28:12,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-16 21:28:12,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:12" (1/1) ... [2022-03-16 21:28:12,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 21:28:12,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:28:13,005 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 21:28:13,036 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 21:28:13,052 INFO L130 BoogieDeclarations]: Found specification of procedure decrement [2022-03-16 21:28:13,052 INFO L138 BoogieDeclarations]: Found implementation of procedure decrement [2022-03-16 21:28:13,052 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2022-03-16 21:28:13,053 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2022-03-16 21:28:13,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-16 21:28:13,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-16 21:28:13,053 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 21:28:13,086 INFO L234 CfgBuilder]: Building ICFG [2022-03-16 21:28:13,087 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-16 21:28:13,136 INFO L275 CfgBuilder]: Performing block encoding [2022-03-16 21:28:13,141 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-16 21:28:13,141 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-16 21:28:13,142 INFO L202 PluginConnector]: Adding new model ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 09:28:13 BoogieIcfgContainer [2022-03-16 21:28:13,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-16 21:28:13,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-16 21:28:13,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-16 21:28:13,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-16 21:28:13,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:28:12" (1/2) ... [2022-03-16 21:28:13,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2630356f and model type ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 09:28:13, skipping insertion in model container [2022-03-16 21:28:13,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 09:28:13" (2/2) ... [2022-03-16 21:28:13,148 INFO L111 eAbstractionObserver]: Analyzing ICFG ThreadIdTest-Unsafe.bpl [2022-03-16 21:28:13,151 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-16 21:28:13,151 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-16 21:28:13,151 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-16 21:28:13,151 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-16 21:28:13,164 WARN L322 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:13,165 WARN L322 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:13,165 WARN L322 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:13,165 WARN L322 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:13,165 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:13,166 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:13,166 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:13,166 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:13,169 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:13,170 WARN L322 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 21:28:13,172 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-16 21:28:13,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-16 21:28:13,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:28:13,203 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 21:28:13,204 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 21:28:13,260 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-16 21:28:13,268 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=true, mMcrOverapproximateWrwc=true [2022-03-16 21:28:13,268 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-16 21:28:13,311 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 16 transitions and produced 17 states. [2022-03-16 21:28:13,313 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:28:13,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:28:13,317 INFO L85 PathProgramCache]: Analyzing trace with hash 699791812, now seen corresponding path program 1 times [2022-03-16 21:28:13,323 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:28:13,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468232279] [2022-03-16 21:28:13,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:28:13,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:28:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:28:13,450 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 21:28:13,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:28:13,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468232279] [2022-03-16 21:28:13,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468232279] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 21:28:13,451 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 21:28:13,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-16 21:28:13,452 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306464056] [2022-03-16 21:28:13,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 21:28:13,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-16 21:28:13,456 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:28:13,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-16 21:28:13,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-16 21:28:13,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:28:13,480 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:28:13,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 21:28:13,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:28:13,516 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 16 transitions and produced 17 states. [2022-03-16 21:28:13,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:28:13,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-16 21:28:13,523 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:28:13,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:28:13,524 INFO L85 PathProgramCache]: Analyzing trace with hash 699791843, now seen corresponding path program 1 times [2022-03-16 21:28:13,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:28:13,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364917826] [2022-03-16 21:28:13,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:28:13,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:28:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-16 21:28:13,534 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-16 21:28:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-16 21:28:13,582 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-16 21:28:13,582 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-16 21:28:13,584 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-16 21:28:13,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-16 21:28:13,585 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-16 21:28:13,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-16 21:28:13,605 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-16 21:28:13,609 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-16 21:28:13,609 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-16 21:28:13,629 INFO L202 PluginConnector]: Adding new model ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 09:28:13 BasicIcfg [2022-03-16 21:28:13,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-16 21:28:13,630 INFO L158 Benchmark]: Toolchain (without parser) took 684.05ms. Allocated memory is still 212.9MB. Free memory was 173.4MB in the beginning and 165.3MB in the end (delta: 8.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-16 21:28:13,630 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 212.9MB. Free memory is still 174.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-16 21:28:13,631 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.65ms. Allocated memory is still 212.9MB. Free memory was 173.3MB in the beginning and 171.7MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-16 21:28:13,631 INFO L158 Benchmark]: Boogie Preprocessor took 10.97ms. Allocated memory is still 212.9MB. Free memory was 171.7MB in the beginning and 170.8MB in the end (delta: 843.8kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-16 21:28:13,633 INFO L158 Benchmark]: RCFGBuilder took 162.05ms. Allocated memory is still 212.9MB. Free memory was 170.8MB in the beginning and 162.9MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-16 21:28:13,633 INFO L158 Benchmark]: TraceAbstraction took 485.62ms. Allocated memory is still 212.9MB. Free memory was 162.4MB in the beginning and 165.3MB in the end (delta: -2.9MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-16 21:28:13,635 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 0.11ms. Allocated memory is still 212.9MB. Free memory is still 174.3MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.65ms. Allocated memory is still 212.9MB. Free memory was 173.3MB in the beginning and 171.7MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.97ms. Allocated memory is still 212.9MB. Free memory was 171.7MB in the beginning and 170.8MB in the end (delta: 843.8kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 162.05ms. Allocated memory is still 212.9MB. Free memory was 170.8MB in the beginning and 162.9MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 485.62ms. Allocated memory is still 212.9MB. Free memory was 162.4MB in the beginning and 165.3MB in the end (delta: -2.9MB). 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: 22]: assertion can be violated assertion can be violated We found a FailurePath: [L17] 0 x := 0; VAL [x=0] [L19] FORK 0 fork 1 increment(x); VAL [n=0, x=0] [L20] FORK 0 fork 2 decrement(x); VAL [n=0, n=0, x=0] [L37] 2 res := n - 1; VAL [n=0, n=0, res=-1, x=0] [L29] 1 res := n + 1; VAL [n=0, n=0, res=1, res=-1, x=0] [L21] JOIN 2 join 2 assign y; VAL [n=0, n=0, res=-1, res=1, x=0, y=-1] [L22] 0 assert y == 1; VAL [n=0, n=0, res=-1, res=1, x=0, y=-1] - UnprovableResult [Line: 19]: 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: 19]: 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, 22 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, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 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 21:28:13,690 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 [2022-03-16 21:28:13,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...