/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_unchanged_local_variables2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a [2022-02-18 21:54:00,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-18 21:54:00,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-18 21:54:01,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-18 21:54:01,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-18 21:54:01,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-18 21:54:01,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-18 21:54:01,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-18 21:54:01,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-18 21:54:01,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-18 21:54:01,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-18 21:54:01,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-18 21:54:01,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-18 21:54:01,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-18 21:54:01,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-18 21:54:01,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-18 21:54:01,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-18 21:54:01,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-18 21:54:01,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-18 21:54:01,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-18 21:54:01,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-18 21:54:01,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-18 21:54:01,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-18 21:54:01,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-18 21:54:01,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-18 21:54:01,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-18 21:54:01,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-18 21:54:01,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-18 21:54:01,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-18 21:54:01,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-18 21:54:01,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-18 21:54:01,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-18 21:54:01,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-18 21:54:01,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-18 21:54:01,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-18 21:54:01,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-18 21:54:01,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-18 21:54:01,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-18 21:54:01,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-18 21:54:01,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-18 21:54:01,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-18 21:54:01,066 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 21:54:01,093 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-18 21:54:01,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-18 21:54:01,093 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-18 21:54:01,093 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-18 21:54:01,094 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-18 21:54:01,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-18 21:54:01,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-18 21:54:01,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-18 21:54:01,095 INFO L138 SettingsManager]: * Use SBE=true [2022-02-18 21:54:01,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-18 21:54:01,096 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-18 21:54:01,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-18 21:54:01,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-18 21:54:01,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-18 21:54:01,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-18 21:54:01,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-18 21:54:01,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-18 21:54:01,096 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-18 21:54:01,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-18 21:54:01,096 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-18 21:54:01,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-18 21:54:01,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-18 21:54:01,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-18 21:54:01,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-18 21:54:01,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-18 21:54:01,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-18 21:54:01,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-18 21:54:01,098 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-18 21:54:01,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-18 21:54:01,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-18 21:54:01,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-18 21:54:01,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-18 21:54:01,099 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-18 21:54:01,099 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-18 21:54:01,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-18 21:54:01,099 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-02-18 21:54:01,099 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-18 21:54:01,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-18 21:54:01,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-18 21:54:01,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-18 21:54:01,324 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-18 21:54:01,327 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-18 21:54:01,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_unchanged_local_variables2.bpl [2022-02-18 21:54:01,328 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_unchanged_local_variables2.bpl' [2022-02-18 21:54:01,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-18 21:54:01,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-18 21:54:01,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-18 21:54:01,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-18 21:54:01,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-18 21:54:01,355 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 18.02 09:54:01" (1/1) ... [2022-02-18 21:54:01,359 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 18.02 09:54:01" (1/1) ... [2022-02-18 21:54:01,365 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-18 21:54:01,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-18 21:54:01,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-18 21:54:01,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-18 21:54:01,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-18 21:54:01,373 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 18.02 09:54:01" (1/1) ... [2022-02-18 21:54:01,373 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 18.02 09:54:01" (1/1) ... [2022-02-18 21:54:01,373 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 18.02 09:54:01" (1/1) ... [2022-02-18 21:54:01,374 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 18.02 09:54:01" (1/1) ... [2022-02-18 21:54:01,375 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 18.02 09:54:01" (1/1) ... [2022-02-18 21:54:01,376 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 18.02 09:54:01" (1/1) ... [2022-02-18 21:54:01,377 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 18.02 09:54:01" (1/1) ... [2022-02-18 21:54:01,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-18 21:54:01,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-18 21:54:01,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-18 21:54:01,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-18 21:54:01,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:54:01" (1/1) ... [2022-02-18 21:54:01,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-18 21:54:01,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 21:54:01,407 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 21:54:01,416 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 21:54:01,444 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2022-02-18 21:54:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-02-18 21:54:01,444 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-02-18 21:54:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-18 21:54:01,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-18 21:54:01,445 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 21:54:01,473 INFO L234 CfgBuilder]: Building ICFG [2022-02-18 21:54:01,474 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-18 21:54:01,519 INFO L275 CfgBuilder]: Performing block encoding [2022-02-18 21:54:01,523 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-18 21:54:01,523 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-18 21:54:01,524 INFO L202 PluginConnector]: Adding new model fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:54:01 BoogieIcfgContainer [2022-02-18 21:54:01,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-18 21:54:01,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-18 21:54:01,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-18 21:54:01,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-18 21:54:01,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.02 09:54:01" (1/2) ... [2022-02-18 21:54:01,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af88ff4 and model type fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 09:54:01, skipping insertion in model container [2022-02-18 21:54:01,529 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 18.02 09:54:01" (2/2) ... [2022-02-18 21:54:01,530 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_unchanged_local_variables2.bpl [2022-02-18 21:54:01,533 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-18 21:54:01,533 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-18 21:54:01,533 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-18 21:54:01,533 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-18 21:54:01,545 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 21:54:01,545 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 21:54:01,545 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 21:54:01,546 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 21:54:01,548 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 21:54:01,548 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 21:54:01,550 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-02-18 21:54:01,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-18 21:54:01,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 21:54:01,578 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 21:54:01,585 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 21:54:01,603 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-18 21:54:01,611 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 21:54:01,611 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-18 21:54:01,682 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-18 21:54:01,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 21:54:01,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1810014354, now seen corresponding path program 1 times [2022-02-18 21:54:01,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 21:54:01,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468579214] [2022-02-18 21:54:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 21:54:01,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 21:54:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 21:54:01,846 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 21:54:01,846 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 21:54:01,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468579214] [2022-02-18 21:54:01,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468579214] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 21:54:01,847 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 21:54:01,848 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-18 21:54:01,849 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852163346] [2022-02-18 21:54:01,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 21:54:01,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-18 21:54:01,859 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 21:54:01,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-18 21:54:01,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-18 21:54:01,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-18 21:54:01,885 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-18 21:54:01,886 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) [2022-02-18 21:54:01,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-18 21:54:01,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-18 21:54:01,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-18 21:54:01,932 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-18 21:54:01,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 21:54:01,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2012947041, now seen corresponding path program 1 times [2022-02-18 21:54:01,933 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 21:54:01,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989121535] [2022-02-18 21:54:01,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 21:54:01,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 21:54:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-18 21:54:01,943 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-18 21:54:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-18 21:54:01,965 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-18 21:54:01,966 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-18 21:54:01,967 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-02-18 21:54:01,969 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-02-18 21:54:01,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-18 21:54:01,975 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-18 21:54:01,979 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-18 21:54:01,980 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-18 21:54:01,989 INFO L202 PluginConnector]: Adding new model fork_unchanged_local_variables2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 09:54:01 BasicIcfg [2022-02-18 21:54:01,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-18 21:54:01,990 INFO L158 Benchmark]: Toolchain (without parser) took 643.72ms. Allocated memory is still 199.2MB. Free memory was 157.4MB in the beginning and 155.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.4MB. Max. memory is 8.0GB. [2022-02-18 21:54:01,991 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 199.2MB. Free memory is still 158.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-18 21:54:01,991 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.07ms. Allocated memory is still 199.2MB. Free memory was 157.3MB in the beginning and 155.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-18 21:54:01,992 INFO L158 Benchmark]: Boogie Preprocessor took 10.28ms. Allocated memory is still 199.2MB. Free memory was 155.7MB in the beginning and 154.8MB in the end (delta: 864.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-18 21:54:01,993 INFO L158 Benchmark]: RCFGBuilder took 146.24ms. Allocated memory is still 199.2MB. Free memory was 154.7MB in the beginning and 146.7MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-18 21:54:01,993 INFO L158 Benchmark]: TraceAbstraction took 464.76ms. Allocated memory is still 199.2MB. Free memory was 146.2MB in the beginning and 155.8MB in the end (delta: -9.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-18 21:54:01,995 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 0.10ms. Allocated memory is still 199.2MB. Free memory is still 158.3MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.07ms. Allocated memory is still 199.2MB. Free memory was 157.3MB in the beginning and 155.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.28ms. Allocated memory is still 199.2MB. Free memory was 155.7MB in the beginning and 154.8MB in the end (delta: 864.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 146.24ms. Allocated memory is still 199.2MB. Free memory was 154.7MB in the beginning and 146.7MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 464.76ms. Allocated memory is still 199.2MB. Free memory was 146.2MB in the beginning and 155.8MB in the end (delta: -9.7MB). 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: 8, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, 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: 3, positive: 3, positive conditional: 3, 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: 3, positive: 3, positive conditional: 1, positive unconditional: 2, 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: 3, positive: 3, positive conditional: 0, positive unconditional: 3, 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: 3, positive: 3, positive conditional: 0, positive unconditional: 3, 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, 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: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, 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=0, res=2, 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 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, 0.1s 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! [2022-02-18 21:54:02,041 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 21:54:02,257 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...