/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-NewStatesSleepPersistentFixedOrder-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/fork_unchanged_local_variables2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-09 13:52:46,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-09 13:52:46,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-09 13:52:46,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-09 13:52:46,685 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-NewStatesSleepPersistentFixedOrder-NoLbe.epf [2022-02-09 13:52:46,708 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-09 13:52:46,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-09 13:52:46,708 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-09 13:52:46,708 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-09 13:52:46,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-09 13:52:46,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-09 13:52:46,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-09 13:52:46,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-09 13:52:46,710 INFO L138 SettingsManager]: * Use SBE=true [2022-02-09 13:52:46,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-09 13:52:46,711 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-09 13:52:46,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-09 13:52:46,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-09 13:52:46,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-09 13:52:46,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-09 13:52:46,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-09 13:52:46,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-09 13:52:46,712 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-09 13:52:46,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-09 13:52:46,712 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-09 13:52:46,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-09 13:52:46,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-09 13:52:46,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-09 13:52:46,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-09 13:52:46,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-09 13:52:46,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 13:52:46,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-09 13:52:46,713 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-09 13:52:46,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-09 13:52:46,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-09 13:52:46,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-09 13:52:46,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-09 13:52:46,713 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-09 13:52:46,714 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-09 13:52:46,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-09 13:52:46,714 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-02-09 13:52:46,714 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-02-09 13:52:46,714 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-09 13:52:46,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-09 13:52:46,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-09 13:52:46,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-09 13:52:46,935 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-09 13:52:46,936 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-09 13:52:46,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_unchanged_local_variables2.bpl [2022-02-09 13:52:46,937 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_unchanged_local_variables2.bpl' [2022-02-09 13:52:46,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-09 13:52:46,959 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-09 13:52:46,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-09 13:52:46,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-09 13:52:46,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-09 13:52:46,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:46" (1/1) ... [2022-02-09 13:52:46,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:46" (1/1) ... [2022-02-09 13:52:46,985 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-09 13:52:46,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-09 13:52:46,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-09 13:52:46,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-09 13:52:46,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-09 13:52:46,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:46" (1/1) ... [2022-02-09 13:52:46,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:46" (1/1) ... [2022-02-09 13:52:46,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:46" (1/1) ... [2022-02-09 13:52:46,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:46" (1/1) ... [2022-02-09 13:52:46,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:46" (1/1) ... [2022-02-09 13:52:46,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:46" (1/1) ... [2022-02-09 13:52:46,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:46" (1/1) ... [2022-02-09 13:52:46,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-09 13:52:47,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-09 13:52:47,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-09 13:52:47,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-09 13:52:47,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:46" (1/1) ... [2022-02-09 13:52:47,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 13:52:47,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 13:52:47,037 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 13:52:47,050 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 13:52:47,077 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2022-02-09 13:52:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-02-09 13:52:47,077 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-02-09 13:52:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-09 13:52:47,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-09 13:52:47,078 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 13:52:47,124 INFO L234 CfgBuilder]: Building ICFG [2022-02-09 13:52:47,125 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-09 13:52:47,200 INFO L275 CfgBuilder]: Performing block encoding [2022-02-09 13:52:47,207 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-09 13:52:47,207 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-09 13:52:47,210 INFO L202 PluginConnector]: Adding new model fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 01:52:47 BoogieIcfgContainer [2022-02-09 13:52:47,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-09 13:52:47,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-09 13:52:47,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-09 13:52:47,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-09 13:52:47,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 01:52:46" (1/2) ... [2022-02-09 13:52:47,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c6f5b8 and model type fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 01:52:47, skipping insertion in model container [2022-02-09 13:52:47,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 01:52:47" (2/2) ... [2022-02-09 13:52:47,219 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_unchanged_local_variables2.bpl [2022-02-09 13:52:47,229 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-09 13:52:47,229 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-09 13:52:47,229 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-09 13:52:47,229 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-09 13:52:47,258 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 13:52:47,259 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 13:52:47,260 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 13:52:47,260 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 13:52:47,269 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 13:52:47,269 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 13:52:47,271 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-02-09 13:52:47,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-09 13:52:47,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 13:52:47,312 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 13:52:47,313 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 13:52:47,341 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-02-09 13:52:47,347 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 13:52:47,347 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-09 13:52:47,418 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-09 13:52:47,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 13:52:47,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1810014354, now seen corresponding path program 1 times [2022-02-09 13:52:47,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 13:52:47,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927764664] [2022-02-09 13:52:47,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 13:52:47,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 13:52:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 13:52:47,551 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 13:52:47,551 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 13:52:47,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927764664] [2022-02-09 13:52:47,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927764664] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 13:52:47,552 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 13:52:47,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 13:52:47,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587099041] [2022-02-09 13:52:47,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 13:52:47,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-09 13:52:47,561 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 13:52:47,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-09 13:52:47,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 13:52:47,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 13:52:47,579 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 13:52:47,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 13:52:47,580 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 13:52:47,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-09 13:52:47,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-09 13:52:47,601 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-09 13:52:47,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 13:52:47,602 INFO L85 PathProgramCache]: Analyzing trace with hash -2012947041, now seen corresponding path program 1 times [2022-02-09 13:52:47,602 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 13:52:47,603 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415397968] [2022-02-09 13:52:47,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 13:52:47,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 13:52:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 13:52:47,615 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-09 13:52:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 13:52:47,634 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-09 13:52:47,634 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-09 13:52:47,636 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-02-09 13:52:47,637 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-02-09 13:52:47,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-09 13:52:47,653 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-09 13:52:47,657 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-09 13:52:47,657 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-09 13:52:47,696 INFO L202 PluginConnector]: Adding new model fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.02 01:52:47 BasicIcfg [2022-02-09 13:52:47,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-09 13:52:47,697 INFO L158 Benchmark]: Toolchain (without parser) took 737.92ms. Allocated memory was 173.0MB in the beginning and 270.5MB in the end (delta: 97.5MB). Free memory was 134.7MB in the beginning and 245.6MB in the end (delta: -110.9MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 13:52:47,697 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 173.0MB. Free memory was 135.7MB in the beginning and 135.6MB in the end (delta: 91.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 13:52:47,698 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.85ms. Allocated memory is still 173.0MB. Free memory was 134.6MB in the beginning and 133.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-09 13:52:47,698 INFO L158 Benchmark]: Boogie Preprocessor took 11.32ms. Allocated memory is still 173.0MB. Free memory was 133.1MB in the beginning and 132.2MB in the end (delta: 914.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-09 13:52:47,699 INFO L158 Benchmark]: RCFGBuilder took 211.05ms. Allocated memory is still 173.0MB. Free memory was 132.1MB in the beginning and 124.1MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2022-02-09 13:52:47,699 INFO L158 Benchmark]: TraceAbstraction took 482.90ms. Allocated memory was 173.0MB in the beginning and 270.5MB in the end (delta: 97.5MB). Free memory was 123.6MB in the beginning and 245.6MB in the end (delta: -122.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 13:52:47,701 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 173.0MB. Free memory was 135.7MB in the beginning and 135.6MB in the end (delta: 91.0kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.85ms. Allocated memory is still 173.0MB. Free memory was 134.6MB in the beginning and 133.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 11.32ms. Allocated memory is still 173.0MB. Free memory was 133.1MB in the beginning and 132.2MB in the end (delta: 914.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 211.05ms. Allocated memory is still 173.0MB. Free memory was 132.1MB in the beginning and 124.1MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * TraceAbstraction took 482.90ms. Allocated memory was 173.0MB in the beginning and 270.5MB in the end (delta: 97.5MB). Free memory was 123.6MB in the beginning and 245.6MB in the end (delta: -122.0MB). 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: 7, positive conditional: 3, positive unconditional: 4, negative: 6, negative conditional: 5, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 3, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 3, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 1, positive unconditional: 6, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 8, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 19, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Eliminated conditions: 1, Maximal queried relation: 0, Independence queries for same thread: 5 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.0s, Number of persistent set computation: 11, Number of trivial persistent sets: 11, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 13, positive: 7, positive conditional: 3, positive unconditional: 4, negative: 6, negative conditional: 5, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 3, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 3, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 1, positive unconditional: 6, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 8, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 19, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Eliminated conditions: 1, Maximal queried relation: 0, Independence queries for same thread: 5 - 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: 25]: assertion can be violated assertion can be violated We found a FailurePath: [L17] 0 res := 0; VAL [res=0] [L18] 0 x := 0; VAL [res=0, x=0] [L20] COND TRUE 0 x < 3 VAL [res=0, x=0] [L21] FORK 0 fork x foo(); VAL [res=0, x=0] [L22] 0 resOld := res; VAL [res=0, resOld=0, x=0] [L35] 1 res := y; VAL [res=2, res=0, resOld=0, x=0, y=2] [L23] JOIN 1 join x assign res; VAL [res=2, res=2, resOld=0, x=0, y=2] [L24] COND FALSE 0 !(x > 0) VAL [res=2, res=2, resOld=0, x=0, y=2] [L27] 0 x := x + 1; VAL [res=2, res=2, resOld=0, x=1, y=2] [L20] COND TRUE 0 x < 3 VAL [res=2, res=2, resOld=0, x=1, y=2] [L21] FORK 0 fork x foo(); VAL [res=2, resOld=0, x=1] [L22] 0 resOld := res; VAL [res=2, resOld=2, x=1] [L35] 1 res := y; VAL [res=3, res=2, resOld=2, x=1, y=3] [L23] JOIN 1 join x assign res; VAL [res=3, res=3, resOld=2, x=1, y=3] [L24] COND TRUE 0 x > 0 VAL [res=3, res=3, resOld=2, x=1, y=3] [L25] 0 assert resOld == res; VAL [res=3, res=3, resOld=2, x=1, y=3] - UnprovableResult [Line: 21]: 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 for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 19 locations, 2 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, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 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 13:52:47,772 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 13:52:47,979 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...