/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/fork_in_loop.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-09 08:19:59,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-09 08:19:59,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-09 08:19:59,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-09 08:19:59,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-09 08:19:59,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-09 08:19:59,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-09 08:19:59,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-09 08:19:59,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-09 08:19:59,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-09 08:19:59,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-09 08:19:59,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-09 08:19:59,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-09 08:19:59,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-09 08:19:59,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-09 08:19:59,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-09 08:19:59,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-09 08:19:59,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe.epf [2022-02-09 08:19:59,404 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-09 08:19:59,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-09 08:19:59,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-09 08:19:59,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-09 08:19:59,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-09 08:19:59,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-09 08:19:59,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-09 08:19:59,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-09 08:19:59,406 INFO L138 SettingsManager]: * Use SBE=true [2022-02-09 08:19:59,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-09 08:19:59,407 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-09 08:19:59,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-09 08:19:59,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-09 08:19:59,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-09 08:19:59,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-09 08:19:59,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-09 08:19:59,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-09 08:19:59,408 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-09 08:19:59,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-09 08:19:59,408 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-09 08:19:59,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-09 08:19:59,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-09 08:19:59,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-09 08:19:59,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-09 08:19:59,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-09 08:19:59,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 08:19:59,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-09 08:19:59,410 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-09 08:19:59,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-09 08:19:59,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-09 08:19:59,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-09 08:19:59,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-09 08:19:59,410 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-09 08:19:59,410 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-09 08:19:59,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-09 08:19:59,410 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-02-09 08:19:59,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-09 08:19:59,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-09 08:19:59,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-09 08:19:59,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-09 08:19:59,627 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-09 08:19:59,629 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-09 08:19:59,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_in_loop.bpl [2022-02-09 08:19:59,630 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_in_loop.bpl' [2022-02-09 08:19:59,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-09 08:19:59,650 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-09 08:19:59,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-09 08:19:59,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-09 08:19:59,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-09 08:19:59,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:19:59" (1/1) ... [2022-02-09 08:19:59,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:19:59" (1/1) ... [2022-02-09 08:19:59,667 INFO L137 Inliner]: procedures = 2, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-09 08:19:59,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-09 08:19:59,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-09 08:19:59,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-09 08:19:59,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-09 08:19:59,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:19:59" (1/1) ... [2022-02-09 08:19:59,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:19:59" (1/1) ... [2022-02-09 08:19:59,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:19:59" (1/1) ... [2022-02-09 08:19:59,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:19:59" (1/1) ... [2022-02-09 08:19:59,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:19:59" (1/1) ... [2022-02-09 08:19:59,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:19:59" (1/1) ... [2022-02-09 08:19:59,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:19:59" (1/1) ... [2022-02-09 08:19:59,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-09 08:19:59,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-09 08:19:59,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-09 08:19:59,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-09 08:19:59,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:19:59" (1/1) ... [2022-02-09 08:19:59,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 08:19:59,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 08:19:59,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-09 08:19:59,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-09 08:19:59,752 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2022-02-09 08:19:59,752 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-02-09 08:19:59,753 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-02-09 08:19:59,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-09 08:19:59,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-09 08:19:59,753 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-09 08:19:59,791 INFO L234 CfgBuilder]: Building ICFG [2022-02-09 08:19:59,792 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-09 08:19:59,845 INFO L275 CfgBuilder]: Performing block encoding [2022-02-09 08:19:59,849 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-09 08:19:59,849 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-09 08:19:59,850 INFO L202 PluginConnector]: Adding new model fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 08:19:59 BoogieIcfgContainer [2022-02-09 08:19:59,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-09 08:19:59,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-09 08:19:59,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-09 08:19:59,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-09 08:19:59,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 08:19:59" (1/2) ... [2022-02-09 08:19:59,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5ef672 and model type fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 08:19:59, skipping insertion in model container [2022-02-09 08:19:59,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 08:19:59" (2/2) ... [2022-02-09 08:19:59,864 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_in_loop.bpl [2022-02-09 08:19:59,867 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-09 08:19:59,867 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-09 08:19:59,867 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-09 08:19:59,867 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-09 08:19:59,880 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:19:59,880 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:19:59,881 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:19:59,881 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:19:59,883 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:19:59,885 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:19:59,887 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-02-09 08:19:59,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-09 08:19:59,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 08:19:59,924 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-09 08:19:59,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-09 08:19:59,957 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 08:19:59,962 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-09 08:19:59,963 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-09 08:19:59,990 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 08:19:59,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 08:20:00,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1658350537, now seen corresponding path program 1 times [2022-02-09 08:20:00,011 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 08:20:00,011 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251947831] [2022-02-09 08:20:00,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 08:20:00,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 08:20:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 08:20:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 08:20:00,129 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 08:20:00,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251947831] [2022-02-09 08:20:00,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251947831] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 08:20:00,130 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 08:20:00,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 08:20:00,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803239984] [2022-02-09 08:20:00,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 08:20:00,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-09 08:20:00,135 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 08:20:00,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-09 08:20:00,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-09 08:20:00,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 08:20:00,161 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 08:20:00,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 08:20:00,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 08:20:00,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-09 08:20:00,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-09 08:20:00,196 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 08:20:00,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 08:20:00,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1092586692, now seen corresponding path program 1 times [2022-02-09 08:20:00,197 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 08:20:00,197 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626336336] [2022-02-09 08:20:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 08:20:00,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 08:20:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 08:20:00,207 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-09 08:20:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 08:20:00,223 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-09 08:20:00,223 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-09 08:20:00,224 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 3 remaining) [2022-02-09 08:20:00,225 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2022-02-09 08:20:00,226 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 3 remaining) [2022-02-09 08:20:00,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-09 08:20:00,231 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-09 08:20:00,232 WARN L235 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-09 08:20:00,232 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-02-09 08:20:00,237 WARN L322 ript$VariableManager]: TermVariabe fooThread1of2ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:20:00,238 WARN L322 ript$VariableManager]: TermVariabe fooThread1of2ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:20:00,238 WARN L322 ript$VariableManager]: TermVariabe fooThread2of2ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:20:00,238 WARN L322 ript$VariableManager]: TermVariabe fooThread2of2ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:20:00,239 WARN L322 ript$VariableManager]: TermVariabe fooThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:20:00,239 WARN L322 ript$VariableManager]: TermVariabe fooThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:20:00,240 WARN L322 ript$VariableManager]: TermVariabe fooThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:20:00,240 WARN L322 ript$VariableManager]: TermVariabe fooThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:20:00,240 WARN L322 ript$VariableManager]: TermVariabe fooThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:20:00,242 WARN L322 ript$VariableManager]: TermVariabe fooThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:20:00,244 WARN L322 ript$VariableManager]: TermVariabe fooThread1of2ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:20:00,245 WARN L322 ript$VariableManager]: TermVariabe fooThread2of2ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 08:20:00,253 INFO L148 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-02-09 08:20:00,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-09 08:20:00,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 08:20:00,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-09 08:20:00,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2022-02-09 08:20:00,277 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 08:20:00,278 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-09 08:20:00,278 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-09 08:20:00,284 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 08:20:00,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 08:20:00,285 INFO L85 PathProgramCache]: Analyzing trace with hash 563208564, now seen corresponding path program 1 times [2022-02-09 08:20:00,285 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 08:20:00,285 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796113931] [2022-02-09 08:20:00,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 08:20:00,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 08:20:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 08:20:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 08:20:00,309 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 08:20:00,309 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796113931] [2022-02-09 08:20:00,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796113931] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 08:20:00,309 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 08:20:00,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 08:20:00,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802405610] [2022-02-09 08:20:00,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 08:20:00,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-09 08:20:00,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 08:20:00,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-09 08:20:00,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-09 08:20:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 08:20:00,310 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 08:20:00,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) 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) [2022-02-09 08:20:00,310 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 08:20:00,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-09 08:20:00,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-09 08:20:00,335 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 08:20:00,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 08:20:00,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1981956494, now seen corresponding path program 1 times [2022-02-09 08:20:00,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 08:20:00,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066071769] [2022-02-09 08:20:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 08:20:00,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 08:20:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 08:20:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 08:20:00,386 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 08:20:00,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066071769] [2022-02-09 08:20:00,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066071769] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 08:20:00,386 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 08:20:00,387 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-09 08:20:00,387 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737687466] [2022-02-09 08:20:00,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 08:20:00,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-09 08:20:00,387 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 08:20:00,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-09 08:20:00,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-09 08:20:00,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 08:20:00,388 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 08:20:00,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 08:20:00,388 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-09 08:20:00,388 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 08:20:00,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-09 08:20:00,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-09 08:20:00,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-09 08:20:00,462 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 08:20:00,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 08:20:00,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2117524965, now seen corresponding path program 1 times [2022-02-09 08:20:00,463 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 08:20:00,463 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703331349] [2022-02-09 08:20:00,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 08:20:00,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 08:20:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 08:20:00,475 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-09 08:20:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 08:20:00,516 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-09 08:20:00,516 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-09 08:20:00,517 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-09 08:20:00,517 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-09 08:20:00,517 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-09 08:20:00,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-09 08:20:00,518 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-09 08:20:00,521 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-02-09 08:20:00,521 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-09 08:20:00,558 INFO L202 PluginConnector]: Adding new model fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.02 08:20:00 BasicIcfg [2022-02-09 08:20:00,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-09 08:20:00,560 INFO L158 Benchmark]: Toolchain (without parser) took 908.91ms. Allocated memory is still 187.7MB. Free memory was 148.0MB in the beginning and 163.2MB in the end (delta: -15.2MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 08:20:00,560 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 187.7MB. Free memory is still 148.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 08:20:00,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.08ms. Allocated memory is still 187.7MB. Free memory was 147.8MB in the beginning and 146.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-09 08:20:00,563 INFO L158 Benchmark]: Boogie Preprocessor took 10.51ms. Allocated memory is still 187.7MB. Free memory was 146.3MB in the beginning and 145.4MB in the end (delta: 946.6kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-09 08:20:00,563 INFO L158 Benchmark]: RCFGBuilder took 170.15ms. Allocated memory is still 187.7MB. Free memory was 145.3MB in the beginning and 137.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-09 08:20:00,564 INFO L158 Benchmark]: TraceAbstraction took 706.63ms. Allocated memory is still 187.7MB. Free memory was 136.8MB in the beginning and 163.2MB in the end (delta: -26.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 08:20:00,565 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 0.09ms. Allocated memory is still 187.7MB. Free memory is still 148.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.08ms. Allocated memory is still 187.7MB. Free memory was 147.8MB in the beginning and 146.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.51ms. Allocated memory is still 187.7MB. Free memory was 146.3MB in the beginning and 145.4MB in the end (delta: 946.6kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 170.15ms. Allocated memory is still 187.7MB. Free memory was 145.3MB in the beginning and 137.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 706.63ms. Allocated memory is still 187.7MB. Free memory was 136.8MB in the beginning and 163.2MB in the end (delta: -26.4MB). 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: 18, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 12, positive: 12, positive conditional: 12, 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: 12, positive: 12, positive conditional: 12, 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: 12, positive: 12, positive conditional: 8, positive unconditional: 4, 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: 12, positive: 12, positive conditional: 6, positive unconditional: 6, 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: 12, positive: 12, positive conditional: 6, positive unconditional: 6, 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: 9, positive: 9, positive conditional: 3, positive unconditional: 6, 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: 9, positive: 9, positive conditional: 0, positive unconditional: 9, 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: 12, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 9, unknown conditional: 3, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 9, Positive cache size: 9, Positive conditional cache size: 3, Positive unconditional cache size: 6, 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: 6 - 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 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 68, positive: 55, positive conditional: 55, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 55, positive: 55, positive conditional: 55, 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: 55, positive: 55, positive conditional: 55, 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: 55, positive: 55, positive conditional: 40, positive unconditional: 15, 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: 55, positive: 55, positive conditional: 26, positive unconditional: 29, 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: 55, positive: 55, positive conditional: 26, positive unconditional: 29, 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: 36, positive: 36, positive conditional: 18, positive unconditional: 18, 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: 36, positive: 36, positive conditional: 0, positive unconditional: 36, 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: 55, positive: 19, positive conditional: 8, positive unconditional: 11, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 36, unknown conditional: 18, unknown unconditional: 18] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 36, Positive conditional cache size: 18, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 14, Maximal queried relation: 0, Independence queries for same thread: 13 - 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: 35]: assertion can be violated assertion can be violated We found a FailurePath: [L20] 0 x := 1; VAL [x=1] [L22] COND TRUE 0 x < 2 VAL [x=1] [L23] FORK 0 fork x foo(x); VAL [i=1, x=1] [L24] 0 x := x + 1; VAL [i=1, x=2] [L22] COND FALSE 0 !(x < 2) VAL [i=1, x=2] [L26] 0 x := 1; VAL [i=1, x=1] [L42] 1 y := 4; VAL [i=1, x=1, y=4] [L27] JOIN 1 join x; VAL [i=1, x=1, y=4] [L28] COND TRUE 0 x < 3 VAL [i=1, x=1, y=4] [L29] FORK 0 fork x foo(x); VAL [i=1, x=1, y=4] [L30] 0 x := x + 1; VAL [i=1, x=2, y=4] [L28] COND TRUE 0 x < 3 VAL [i=1, x=2, y=4] [L29] FORK 0 fork x foo(x); VAL [i=2, x=2, y=4] [L30] 0 x := x + 1; VAL [i=2, x=3, y=4] [L28] COND FALSE 0 !(x < 3) VAL [i=2, x=3, y=4] [L42] 2 y := 4; VAL [i=2, x=3, y=4] [L42] 3 y := 4; VAL [i=2, x=3, y=4] [L33] JOIN 2 join 1; VAL [i=2, x=3, y=4] [L34] JOIN 3 join 2; VAL [i=2, x=3, y=4] [L35] 0 assert false; VAL [i=2, x=3, y=4] - UnprovableResult [Line: 23]: 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: 29]: 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 4 procedures, 26 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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: 4, 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, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 2/2 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 6 procedures, 32 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 3, 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: 9, 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, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 52 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 15/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-02-09 08:20:00,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Ended with exit code 0 [2022-02-09 08:20:00,808 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 [2022-02-09 08:20:01,024 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...