/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Unsafe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-bc289cb [2022-01-29 12:56:46,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-29 12:56:46,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-29 12:56:46,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-29 12:56:46,699 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.epf [2022-01-29 12:56:46,724 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-29 12:56:46,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-29 12:56:46,725 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-29 12:56:46,725 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-29 12:56:46,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-29 12:56:46,725 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-29 12:56:46,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-29 12:56:46,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-29 12:56:46,726 INFO L138 SettingsManager]: * Use SBE=true [2022-01-29 12:56:46,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-29 12:56:46,727 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-29 12:56:46,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-29 12:56:46,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-29 12:56:46,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-29 12:56:46,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-29 12:56:46,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-29 12:56:46,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-29 12:56:46,727 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-29 12:56:46,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-29 12:56:46,727 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-29 12:56:46,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-29 12:56:46,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-29 12:56:46,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-29 12:56:46,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-29 12:56:46,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-29 12:56:46,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-29 12:56:46,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-29 12:56:46,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-29 12:56:46,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-29 12:56:46,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-29 12:56:46,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-29 12:56:46,729 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-29 12:56:46,730 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-01-29 12:56:46,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-29 12:56:46,730 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-01-29 12:56:46,730 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-29 12:56:46,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-29 12:56:46,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-29 12:56:46,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-29 12:56:46,948 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-29 12:56:46,949 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-29 12:56:46,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Unsafe.bpl [2022-01-29 12:56:46,950 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Unsafe.bpl' [2022-01-29 12:56:46,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-29 12:56:46,968 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-29 12:56:46,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-29 12:56:46,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-29 12:56:46,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-29 12:56:46,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 12:56:46" (1/1) ... [2022-01-29 12:56:46,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 12:56:46" (1/1) ... [2022-01-29 12:56:46,987 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-29 12:56:46,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-29 12:56:46,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-29 12:56:46,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-29 12:56:46,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-29 12:56:46,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 12:56:46" (1/1) ... [2022-01-29 12:56:46,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 12:56:46" (1/1) ... [2022-01-29 12:56:46,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 12:56:46" (1/1) ... [2022-01-29 12:56:46,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 12:56:46" (1/1) ... [2022-01-29 12:56:46,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 12:56:46" (1/1) ... [2022-01-29 12:56:46,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 12:56:46" (1/1) ... [2022-01-29 12:56:46,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 12:56:46" (1/1) ... [2022-01-29 12:56:46,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-29 12:56:47,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-29 12:56:47,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-29 12:56:47,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-29 12:56:47,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 12:56:46" (1/1) ... [2022-01-29 12:56:47,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-29 12:56:47,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-29 12:56:47,028 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) [2022-01-29 12:56:47,043 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 [2022-01-29 12:56:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure decrement [2022-01-29 12:56:47,056 INFO L138 BoogieDeclarations]: Found implementation of procedure decrement [2022-01-29 12:56:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2022-01-29 12:56:47,056 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2022-01-29 12:56:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-29 12:56:47,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-29 12:56:47,057 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-29 12:56:47,089 INFO L234 CfgBuilder]: Building ICFG [2022-01-29 12:56:47,091 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-29 12:56:47,148 INFO L275 CfgBuilder]: Performing block encoding [2022-01-29 12:56:47,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-29 12:56:47,154 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-29 12:56:47,156 INFO L202 PluginConnector]: Adding new model ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 12:56:47 BoogieIcfgContainer [2022-01-29 12:56:47,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-29 12:56:47,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-29 12:56:47,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-29 12:56:47,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-29 12:56:47,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.01 12:56:46" (1/2) ... [2022-01-29 12:56:47,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376afef2 and model type ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 12:56:47, skipping insertion in model container [2022-01-29 12:56:47,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 12:56:47" (2/2) ... [2022-01-29 12:56:47,164 INFO L111 eAbstractionObserver]: Analyzing ICFG ThreadIdTest-Unsafe.bpl [2022-01-29 12:56:47,167 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-29 12:56:47,167 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-29 12:56:47,167 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-29 12:56:47,167 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-29 12:56:47,193 WARN L322 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-29 12:56:47,194 WARN L322 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-29 12:56:47,194 WARN L322 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-29 12:56:47,194 WARN L322 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-29 12:56:47,198 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-29 12:56:47,198 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-29 12:56:47,198 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-29 12:56:47,198 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-29 12:56:47,202 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-29 12:56:47,206 WARN L322 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-29 12:56:47,208 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-29 12:56:47,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-01-29 12:56:47,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-29 12:56:47,259 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) [2022-01-29 12:56:47,261 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 [2022-01-29 12:56:47,283 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-29 12:56:47,290 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, 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 [2022-01-29 12:56:47,291 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-29 12:56:47,357 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-29 12:56:47,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-29 12:56:47,364 INFO L85 PathProgramCache]: Analyzing trace with hash 699791812, now seen corresponding path program 1 times [2022-01-29 12:56:47,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-29 12:56:47,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294077520] [2022-01-29 12:56:47,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-29 12:56:47,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-29 12:56:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-29 12:56:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-29 12:56:47,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-29 12:56:47,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294077520] [2022-01-29 12:56:47,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294077520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-29 12:56:47,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-29 12:56:47,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-29 12:56:47,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602473481] [2022-01-29 12:56:47,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-29 12:56:47,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-29 12:56:47,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-29 12:56:47,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-29 12:56:47,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-29 12:56:47,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-29 12:56:47,558 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-29 12:56:47,559 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) [2022-01-29 12:56:47,559 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-29 12:56:47,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-29 12:56:47,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-29 12:56:47,604 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-29 12:56:47,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-29 12:56:47,605 INFO L85 PathProgramCache]: Analyzing trace with hash 699791843, now seen corresponding path program 1 times [2022-01-29 12:56:47,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-29 12:56:47,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141135535] [2022-01-29 12:56:47,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-29 12:56:47,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-29 12:56:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-29 12:56:47,612 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-29 12:56:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-29 12:56:47,627 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-29 12:56:47,628 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-29 12:56:47,629 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-01-29 12:56:47,630 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-29 12:56:47,632 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-29 12:56:47,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-29 12:56:47,645 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-29 12:56:47,649 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-29 12:56:47,649 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-29 12:56:47,656 INFO L202 PluginConnector]: Adding new model ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 12:56:47 BasicIcfg [2022-01-29 12:56:47,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-29 12:56:47,657 INFO L158 Benchmark]: Toolchain (without parser) took 688.96ms. Allocated memory is still 199.2MB. Free memory was 163.8MB in the beginning and 166.3MB in the end (delta: -2.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-29 12:56:47,657 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 199.2MB. Free memory was 164.8MB in the beginning and 164.7MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-29 12:56:47,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.18ms. Allocated memory is still 199.2MB. Free memory was 163.8MB in the beginning and 162.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-29 12:56:47,658 INFO L158 Benchmark]: Boogie Preprocessor took 9.57ms. Allocated memory is still 199.2MB. Free memory was 162.2MB in the beginning and 161.3MB in the end (delta: 841.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-29 12:56:47,658 INFO L158 Benchmark]: RCFGBuilder took 156.20ms. Allocated memory is still 199.2MB. Free memory was 161.3MB in the beginning and 153.4MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-01-29 12:56:47,658 INFO L158 Benchmark]: TraceAbstraction took 498.12ms. Allocated memory is still 199.2MB. Free memory was 153.0MB in the beginning and 166.3MB in the end (delta: -13.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-29 12:56:47,660 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 199.2MB. Free memory was 164.8MB in the beginning and 164.7MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.18ms. Allocated memory is still 199.2MB. Free memory was 163.8MB in the beginning and 162.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 9.57ms. Allocated memory is still 199.2MB. Free memory was 162.2MB in the beginning and 161.3MB in the end (delta: 841.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 156.20ms. Allocated memory is still 199.2MB. Free memory was 161.3MB in the beginning and 153.4MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 498.12ms. Allocated memory is still 199.2MB. Free memory was 153.0MB in the beginning and 166.3MB in the end (delta: -13.3MB). 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! [2022-01-29 12:56:47,683 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 [2022-01-29 12:56:47,888 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...