/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a [2022-02-18 21:53:26,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-18 21:53:26,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-18 21:53:26,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-18 21:53:26,881 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe.epf [2022-02-18 21:53:26,917 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-18 21:53:26,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-18 21:53:26,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-18 21:53:26,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-18 21:53:26,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-18 21:53:26,919 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-18 21:53:26,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-18 21:53:26,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-18 21:53:26,920 INFO L138 SettingsManager]: * Use SBE=true [2022-02-18 21:53:26,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-18 21:53:26,921 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-18 21:53:26,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-18 21:53:26,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-18 21:53:26,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-18 21:53:26,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-18 21:53:26,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-18 21:53:26,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-18 21:53:26,922 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-18 21:53:26,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-18 21:53:26,922 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-18 21:53:26,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-18 21:53:26,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-18 21:53:26,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-18 21:53:26,922 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-18 21:53:26,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-18 21:53:26,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-18 21:53:26,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-18 21:53:26,924 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-18 21:53:26,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-18 21:53:26,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-18 21:53:26,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-18 21:53:26,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-18 21:53:26,925 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-18 21:53:26,925 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-18 21:53:26,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-18 21:53:26,925 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-02-18 21:53:26,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-18 21:53:27,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-18 21:53:27,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-18 21:53:27,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-18 21:53:27,139 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-18 21:53:27,140 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-18 21:53:27,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure01.bpl [2022-02-18 21:53:27,142 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure01.bpl' [2022-02-18 21:53:27,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-18 21:53:27,158 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-18 21:53:27,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-18 21:53:27,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-18 21:53:27,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-18 21:53:27,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:53:27" (1/1) ... [2022-02-18 21:53:27,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:53:27" (1/1) ... [2022-02-18 21:53:27,180 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-18 21:53:27,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-18 21:53:27,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-18 21:53:27,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-18 21:53:27,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-18 21:53:27,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:53:27" (1/1) ... [2022-02-18 21:53:27,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:53:27" (1/1) ... [2022-02-18 21:53:27,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:53:27" (1/1) ... [2022-02-18 21:53:27,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:53:27" (1/1) ... [2022-02-18 21:53:27,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:53:27" (1/1) ... [2022-02-18 21:53:27,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:53:27" (1/1) ... [2022-02-18 21:53:27,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:53:27" (1/1) ... [2022-02-18 21:53:27,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-18 21:53:27,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-18 21:53:27,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-18 21:53:27,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-18 21:53:27,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:53:27" (1/1) ... [2022-02-18 21:53:27,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-18 21:53:27,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 21:53:27,227 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) [2022-02-18 21:53:27,233 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 [2022-02-18 21:53:27,259 INFO L124 BoogieDeclarations]: Specification and implementation of procedure bar given in one single declaration [2022-02-18 21:53:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2022-02-18 21:53:27,259 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2022-02-18 21:53:27,260 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2022-02-18 21:53:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-02-18 21:53:27,260 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-02-18 21:53:27,260 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-18 21:53:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-18 21:53:27,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-18 21:53:27,261 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-18 21:53:27,297 INFO L234 CfgBuilder]: Building ICFG [2022-02-18 21:53:27,298 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-18 21:53:27,350 INFO L275 CfgBuilder]: Performing block encoding [2022-02-18 21:53:27,356 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-18 21:53:27,356 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-18 21:53:27,358 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:53:27 BoogieIcfgContainer [2022-02-18 21:53:27,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-18 21:53:27,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-18 21:53:27,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-18 21:53:27,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-18 21:53:27,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:53:27" (1/2) ... [2022-02-18 21:53:27,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8fae58 and model type ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 09:53:27, skipping insertion in model container [2022-02-18 21:53:27,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:53:27" (2/2) ... [2022-02-18 21:53:27,364 INFO L111 eAbstractionObserver]: Analyzing ICFG ForkInForkedProcedure01.bpl [2022-02-18 21:53:27,368 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-18 21:53:27,369 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-18 21:53:27,369 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-18 21:53:27,369 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-18 21:53:27,390 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 21:53:27,395 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 21:53:27,407 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 21:53:27,411 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 21:53:27,412 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 21:53:27,418 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-18 21:53:27,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-18 21:53:27,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 21:53:27,479 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) [2022-02-18 21:53:27,502 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 [2022-02-18 21:53:27,518 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-18 21:53:27,527 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 [2022-02-18 21:53:27,527 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-18 21:53:27,590 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [fooErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, fooThread1of1ForFork1Err2INUSE_VIOLATION] === [2022-02-18 21:53:27,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 21:53:27,596 INFO L85 PathProgramCache]: Analyzing trace with hash 782458711, now seen corresponding path program 1 times [2022-02-18 21:53:27,603 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 21:53:27,604 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654778287] [2022-02-18 21:53:27,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 21:53:27,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 21:53:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 21:53:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 21:53:27,780 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 21:53:27,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654778287] [2022-02-18 21:53:27,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654778287] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 21:53:27,781 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 21:53:27,781 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-18 21:53:27,783 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246369044] [2022-02-18 21:53:27,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 21:53:27,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-18 21:53:27,795 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 21:53:27,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-18 21:53:27,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-18 21:53:27,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-18 21:53:27,816 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-18 21:53:27,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-02-18 21:53:27,818 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-18 21:53:27,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-18 21:53:27,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-18 21:53:27,856 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [fooErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, fooThread1of1ForFork1Err2INUSE_VIOLATION] === [2022-02-18 21:53:27,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 21:53:27,857 INFO L85 PathProgramCache]: Analyzing trace with hash 323194809, now seen corresponding path program 1 times [2022-02-18 21:53:27,857 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 21:53:27,857 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879959764] [2022-02-18 21:53:27,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 21:53:27,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 21:53:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-18 21:53:27,866 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-18 21:53:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-18 21:53:27,884 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-18 21:53:27,884 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-18 21:53:27,885 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-02-18 21:53:27,886 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0INUSE_VIOLATION (2 of 4 remaining) [2022-02-18 21:53:27,887 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-02-18 21:53:27,887 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooThread1of1ForFork1Err2INUSE_VIOLATION (0 of 4 remaining) [2022-02-18 21:53:27,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-18 21:53:27,911 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-18 21:53:27,916 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-18 21:53:27,916 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-18 21:53:27,927 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 09:53:27 BasicIcfg [2022-02-18 21:53:27,928 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-18 21:53:27,928 INFO L158 Benchmark]: Toolchain (without parser) took 769.70ms. Allocated memory is still 184.5MB. Free memory was 149.9MB in the beginning and 155.5MB in the end (delta: -5.6MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-18 21:53:27,929 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 184.5MB. Free memory is still 150.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-18 21:53:27,929 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.95ms. Allocated memory is still 184.5MB. Free memory was 149.9MB in the beginning and 148.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-18 21:53:27,930 INFO L158 Benchmark]: Boogie Preprocessor took 10.48ms. Allocated memory is still 184.5MB. Free memory was 148.3MB in the beginning and 147.4MB in the end (delta: 918.7kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-18 21:53:27,930 INFO L158 Benchmark]: RCFGBuilder took 164.67ms. Allocated memory is still 184.5MB. Free memory was 147.4MB in the beginning and 139.5MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-02-18 21:53:27,931 INFO L158 Benchmark]: TraceAbstraction took 568.47ms. Allocated memory is still 184.5MB. Free memory was 138.9MB in the beginning and 155.5MB in the end (delta: -16.6MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-18 21:53:27,932 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 0.12ms. Allocated memory is still 184.5MB. Free memory is still 150.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.95ms. Allocated memory is still 184.5MB. Free memory was 149.9MB in the beginning and 148.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.48ms. Allocated memory is still 184.5MB. Free memory was 148.3MB in the beginning and 147.4MB in the end (delta: 918.7kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 164.67ms. Allocated memory is still 184.5MB. Free memory was 147.4MB in the beginning and 139.5MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 568.47ms. Allocated memory is still 184.5MB. Free memory was 138.9MB in the beginning and 155.5MB in the end (delta: -16.6MB). 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: 16, positive: 13, positive conditional: 13, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 13, positive: 13, positive conditional: 13, 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: 13, positive: 13, positive conditional: 13, 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: 13, positive: 13, positive conditional: 8, positive unconditional: 5, 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: 13, positive: 13, positive conditional: 6, positive unconditional: 7, 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: 13, positive: 13, positive conditional: 6, positive unconditional: 7, 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: 10, positive: 10, positive conditional: 5, positive unconditional: 5, 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: 10, positive: 10, positive conditional: 0, positive unconditional: 10, 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: 13, positive: 3, positive conditional: 1, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 10, unknown conditional: 5, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 10, Positive cache size: 10, Positive conditional cache size: 5, Positive unconditional cache size: 5, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 2, Maximal queried relation: 0, Independence queries for same thread: 3 - 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: 23]: assertion can be violated assertion can be violated We found a FailurePath: [L17] 0 x := 0; VAL [x=0] [L18] 0 g := 0; VAL [g=0, x=0] [L20] FORK 0 fork 1 foo(x); VAL [g=0, n=0, x=0] [L29] FORK 1 fork 2 bar(n); VAL [g=0, n=0, n=0, x=0] [L30] 1 g := g + 1; VAL [g=1, n=0, n=0, x=0] [L36] 2 res := 23; VAL [g=1, n=0, n=0, res=23, x=0] [L21] JOIN 2 join 2; VAL [g=1, n=0, n=0, res=23, x=0] [L23] 0 assert g == 0; VAL [g=1, n=0, n=0, res=23, x=0] - UnprovableResult [Line: 26]: 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: 20]: 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: 26]: 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, 25 locations, 4 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, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 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! [2022-02-18 21:53:27,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-02-18 21:53:28,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...