/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-MCRwithDepranks.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Unsafe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-09 18:12:17,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-09 18:12:17,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-09 18:12:17,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-09 18:12:17,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-09 18:12:17,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-09 18:12:17,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-09 18:12:17,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-09 18:12:17,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-09 18:12:17,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-09 18:12:17,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-09 18:12:17,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-09 18:12:17,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-09 18:12:17,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-09 18:12:17,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-09 18:12:17,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-09 18:12:17,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-09 18:12:17,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-09 18:12:17,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-09 18:12:17,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-09 18:12:17,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-09 18:12:17,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-09 18:12:17,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-09 18:12:17,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-09 18:12:17,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-09 18:12:17,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-09 18:12:17,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-09 18:12:17,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-09 18:12:17,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-09 18:12:17,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-09 18:12:17,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-09 18:12:17,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-09 18:12:17,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-09 18:12:17,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-09 18:12:17,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-09 18:12:17,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-09 18:12:17,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-09 18:12:17,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-09 18:12:17,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-09 18:12:17,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-09 18:12:17,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-09 18:12:17,395 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-MCRwithDepranks.epf [2022-02-09 18:12:17,416 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-09 18:12:17,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-09 18:12:17,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-09 18:12:17,418 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-09 18:12:17,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-09 18:12:17,419 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-09 18:12:17,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-09 18:12:17,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-09 18:12:17,419 INFO L138 SettingsManager]: * Use SBE=true [2022-02-09 18:12:17,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-09 18:12:17,420 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-09 18:12:17,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-09 18:12:17,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-09 18:12:17,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-09 18:12:17,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-09 18:12:17,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-09 18:12:17,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-09 18:12:17,421 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-09 18:12:17,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-09 18:12:17,421 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-09 18:12:17,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-09 18:12:17,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-09 18:12:17,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-09 18:12:17,422 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-09 18:12:17,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-09 18:12:17,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 18:12:17,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-09 18:12:17,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-09 18:12:17,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-09 18:12:17,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-09 18:12:17,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-09 18:12:17,424 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-09 18:12:17,424 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-09 18:12:17,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-09 18:12:17,424 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-09 18:12:17,424 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-09 18:12:17,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-09 18:12:17,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-09 18:12:17,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-09 18:12:17,709 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-09 18:12:17,710 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-09 18:12:17,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Unsafe.bpl [2022-02-09 18:12:17,712 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Unsafe.bpl' [2022-02-09 18:12:17,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-09 18:12:17,735 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-09 18:12:17,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-09 18:12:17,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-09 18:12:17,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-09 18:12:17,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:12:17" (1/1) ... [2022-02-09 18:12:17,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:12:17" (1/1) ... [2022-02-09 18:12:17,762 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-09 18:12:17,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-09 18:12:17,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-09 18:12:17,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-09 18:12:17,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-09 18:12:17,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:12:17" (1/1) ... [2022-02-09 18:12:17,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:12:17" (1/1) ... [2022-02-09 18:12:17,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:12:17" (1/1) ... [2022-02-09 18:12:17,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:12:17" (1/1) ... [2022-02-09 18:12:17,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:12:17" (1/1) ... [2022-02-09 18:12:17,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:12:17" (1/1) ... [2022-02-09 18:12:17,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:12:17" (1/1) ... [2022-02-09 18:12:17,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-09 18:12:17,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-09 18:12:17,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-09 18:12:17,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-09 18:12:17,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:12:17" (1/1) ... [2022-02-09 18:12:17,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 18:12:17,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:12:17,820 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 18:12:17,849 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 18:12:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure decrement [2022-02-09 18:12:17,882 INFO L138 BoogieDeclarations]: Found implementation of procedure decrement [2022-02-09 18:12:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2022-02-09 18:12:17,882 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2022-02-09 18:12:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-09 18:12:17,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-09 18:12:17,883 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 18:12:17,923 INFO L234 CfgBuilder]: Building ICFG [2022-02-09 18:12:17,925 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-09 18:12:17,986 INFO L275 CfgBuilder]: Performing block encoding [2022-02-09 18:12:17,992 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-09 18:12:17,992 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-09 18:12:17,994 INFO L202 PluginConnector]: Adding new model ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 06:12:17 BoogieIcfgContainer [2022-02-09 18:12:17,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-09 18:12:17,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-09 18:12:17,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-09 18:12:17,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-09 18:12:18,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:12:17" (1/2) ... [2022-02-09 18:12:18,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479f343a and model type ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 06:12:18, skipping insertion in model container [2022-02-09 18:12:18,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 06:12:17" (2/2) ... [2022-02-09 18:12:18,002 INFO L111 eAbstractionObserver]: Analyzing ICFG ThreadIdTest-Unsafe.bpl [2022-02-09 18:12:18,007 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-09 18:12:18,007 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-09 18:12:18,007 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-09 18:12:18,007 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-09 18:12:18,027 WARN L322 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:12:18,027 WARN L322 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:12:18,028 WARN L322 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:12:18,028 WARN L322 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:12:18,029 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:12:18,029 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:12:18,029 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:12:18,029 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:12:18,034 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:12:18,039 WARN L322 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:12:18,044 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-09 18:12:18,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-09 18:12:18,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:12:18,115 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 18:12:18,136 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 18:12:18,177 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 18:12:18,187 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=false, 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 18:12:18,189 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-09 18:12:18,202 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 14 transitions, 44 flow [2022-02-09 18:12:18,226 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 38 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 37 states have internal predecessors, (59), 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 18:12:18,249 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 16 transitions and produced 17 states. [2022-02-09 18:12:18,253 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 18:12:18,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:12:18,259 INFO L85 PathProgramCache]: Analyzing trace with hash 699791812, now seen corresponding path program 1 times [2022-02-09 18:12:18,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:12:18,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137691754] [2022-02-09 18:12:18,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:12:18,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:12:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:12:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:12:18,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:12:18,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137691754] [2022-02-09 18:12:18,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137691754] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 18:12:18,447 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 18:12:18,447 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 18:12:18,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631432774] [2022-02-09 18:12:18,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 18:12:18,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-09 18:12:18,452 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:12:18,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-09 18:12:18,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 18:12:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:12:18,483 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:12:18,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:12:18,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:12:18,515 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 16 transitions and produced 17 states. [2022-02-09 18:12:18,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-09 18:12:18,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-09 18:12:18,523 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-09 18:12:18,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:12:18,524 INFO L85 PathProgramCache]: Analyzing trace with hash 699791843, now seen corresponding path program 1 times [2022-02-09 18:12:18,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:12:18,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565617115] [2022-02-09 18:12:18,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:12:18,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:12:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 18:12:18,533 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-09 18:12:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 18:12:18,551 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-09 18:12:18,551 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-09 18:12:18,552 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-09 18:12:18,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-09 18:12:18,561 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-09 18:12:18,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-09 18:12:18,590 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-09 18:12:18,595 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-09 18:12:18,596 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-09 18:12:18,605 INFO L202 PluginConnector]: Adding new model ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.02 06:12:18 BasicIcfg [2022-02-09 18:12:18,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-09 18:12:18,606 INFO L158 Benchmark]: Toolchain (without parser) took 870.59ms. Allocated memory is still 213.9MB. Free memory was 173.6MB in the beginning and 171.1MB in the end (delta: 2.5MB). Peak memory consumption was 3.9MB. Max. memory is 8.0GB. [2022-02-09 18:12:18,606 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 213.9MB. Free memory is still 174.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 18:12:18,607 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.76ms. Allocated memory is still 213.9MB. Free memory was 173.5MB in the beginning and 172.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-09 18:12:18,612 INFO L158 Benchmark]: Boogie Preprocessor took 15.47ms. Allocated memory is still 213.9MB. Free memory was 172.0MB in the beginning and 171.2MB in the end (delta: 806.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-09 18:12:18,613 INFO L158 Benchmark]: RCFGBuilder took 211.55ms. Allocated memory is still 213.9MB. Free memory was 171.1MB in the beginning and 163.2MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-02-09 18:12:18,614 INFO L158 Benchmark]: TraceAbstraction took 609.38ms. Allocated memory is still 213.9MB. Free memory was 162.7MB in the beginning and 171.1MB in the end (delta: -8.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 18:12:18,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.13ms. Allocated memory is still 213.9MB. Free memory is still 174.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.76ms. Allocated memory is still 213.9MB. Free memory was 173.5MB in the beginning and 172.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.47ms. Allocated memory is still 213.9MB. Free memory was 172.0MB in the beginning and 171.2MB in the end (delta: 806.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 211.55ms. Allocated memory is still 213.9MB. Free memory was 171.1MB in the beginning and 163.2MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 609.38ms. Allocated memory is still 213.9MB. Free memory was 162.7MB in the beginning and 171.1MB in the end (delta: -8.4MB). 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: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 22]: assertion can be violated assertion can be violated We found a FailurePath: [L17] 0 x := 0; VAL [x=0] [L19] FORK 0 fork 1 increment(x); VAL [n=0, x=0] [L20] FORK 0 fork 2 decrement(x); VAL [n=0, n=0, x=0] [L37] 2 res := n - 1; VAL [n=0, n=0, res=-1, x=0] [L29] 1 res := n + 1; VAL [n=0, n=0, res=1, res=-1, x=0] [L21] JOIN 2 join 2 assign y; VAL [n=0, n=0, res=-1, res=1, x=0, y=-1] [L22] 0 assert y == 1; VAL [n=0, n=0, res=1, res=-1, x=0, y=-1] - UnprovableResult [Line: 19]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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=38occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-02-09 18:12:18,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2022-02-09 18:12:18,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...