/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-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-09 23:12:55,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-09 23:12:55,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-09 23:12:55,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-09 23:12:55,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-09 23:12:55,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-09 23:12:55,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-09 23:12:55,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-09 23:12:55,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-09 23:12:55,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-09 23:12:55,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-09 23:12:55,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-09 23:12:55,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-09 23:12:55,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-09 23:12:55,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-09 23:12:55,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-09 23:12:55,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-09 23:12:55,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-09 23:12:55,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-09 23:12:55,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-09 23:12:55,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-09 23:12:55,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-09 23:12:55,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-09 23:12:55,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-09 23:12:55,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-09 23:12:55,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-09 23:12:55,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-09 23:12:55,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-09 23:12:55,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-09 23:12:55,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-09 23:12:55,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-09 23:12:55,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-09 23:12:55,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-09 23:12:55,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-09 23:12:55,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-09 23:12:55,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-09 23:12:55,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-09 23:12:55,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-09 23:12:55,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-09 23:12:55,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-09 23:12:55,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-09 23:12:55,903 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-Lazy.epf [2022-02-09 23:12:55,921 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-09 23:12:55,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-09 23:12:55,922 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-09 23:12:55,922 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-09 23:12:55,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-09 23:12:55,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-09 23:12:55,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-09 23:12:55,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-09 23:12:55,923 INFO L138 SettingsManager]: * Use SBE=true [2022-02-09 23:12:55,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-09 23:12:55,923 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-09 23:12:55,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-09 23:12:55,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-09 23:12:55,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-09 23:12:55,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-09 23:12:55,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-09 23:12:55,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-09 23:12:55,924 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-09 23:12:55,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-09 23:12:55,924 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-09 23:12:55,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-09 23:12:55,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-09 23:12:55,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-09 23:12:55,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-09 23:12:55,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-09 23:12:55,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 23:12:55,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-09 23:12:55,925 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-09 23:12:55,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-09 23:12:55,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-09 23:12:55,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-09 23:12:55,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-09 23:12:55,925 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-09 23:12:55,925 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-09 23:12:55,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-09 23:12:55,925 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-09 23:12:55,926 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-09 23:12:56,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-09 23:12:56,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-09 23:12:56,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-09 23:12:56,127 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-09 23:12:56,129 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-09 23:12:56,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl [2022-02-09 23:12:56,130 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl' [2022-02-09 23:12:56,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-09 23:12:56,149 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-09 23:12:56,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-09 23:12:56,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-09 23:12:56,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-09 23:12:56,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:12:56" (1/1) ... [2022-02-09 23:12:56,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:12:56" (1/1) ... [2022-02-09 23:12:56,169 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-09 23:12:56,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-09 23:12:56,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-09 23:12:56,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-09 23:12:56,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-09 23:12:56,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:12:56" (1/1) ... [2022-02-09 23:12:56,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:12:56" (1/1) ... [2022-02-09 23:12:56,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:12:56" (1/1) ... [2022-02-09 23:12:56,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:12:56" (1/1) ... [2022-02-09 23:12:56,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:12:56" (1/1) ... [2022-02-09 23:12:56,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:12:56" (1/1) ... [2022-02-09 23:12:56,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:12:56" (1/1) ... [2022-02-09 23:12:56,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-09 23:12:56,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-09 23:12:56,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-09 23:12:56,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-09 23:12:56,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:12:56" (1/1) ... [2022-02-09 23:12:56,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 23:12:56,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 23:12:56,199 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 23:12:56,204 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 23:12:56,222 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-09 23:12:56,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-09 23:12:56,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-09 23:12:56,222 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread1 given in one single declaration [2022-02-09 23:12:56,222 INFO L130 BoogieDeclarations]: Found specification of procedure Thread1 [2022-02-09 23:12:56,222 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread1 [2022-02-09 23:12:56,223 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 23:12:56,251 INFO L234 CfgBuilder]: Building ICFG [2022-02-09 23:12:56,252 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-09 23:12:56,318 INFO L275 CfgBuilder]: Performing block encoding [2022-02-09 23:12:56,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-09 23:12:56,326 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-02-09 23:12:56,328 INFO L202 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 11:12:56 BoogieIcfgContainer [2022-02-09 23:12:56,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-09 23:12:56,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-09 23:12:56,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-09 23:12:56,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-09 23:12:56,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 11:12:56" (1/2) ... [2022-02-09 23:12:56,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792cb7f4 and model type cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 11:12:56, skipping insertion in model container [2022-02-09 23:12:56,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 11:12:56" (2/2) ... [2022-02-09 23:12:56,335 INFO L111 eAbstractionObserver]: Analyzing ICFG cutoff_test.bpl [2022-02-09 23:12:56,346 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-09 23:12:56,346 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-09 23:12:56,346 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-09 23:12:56,346 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-09 23:12:56,381 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-02-09 23:12:56,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-09 23:12:56,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 23:12:56,423 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 23:12:56,424 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 23:12:56,445 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 23:12:56,456 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 23:12:56,457 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-09 23:12:56,495 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 14 transitions and produced 15 states. [2022-02-09 23:12:56,497 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-09 23:12:56,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 23:12:56,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1119027243, now seen corresponding path program 1 times [2022-02-09 23:12:56,509 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 23:12:56,510 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458001735] [2022-02-09 23:12:56,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 23:12:56,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 23:12:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 23:12:56,631 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 23:12:56,631 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 23:12:56,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458001735] [2022-02-09 23:12:56,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458001735] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 23:12:56,632 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 23:12:56,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-09 23:12:56,633 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063508114] [2022-02-09 23:12:56,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 23:12:56,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-09 23:12:56,637 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 23:12:56,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-09 23:12:56,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 23:12:56,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 23:12:56,658 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 23:12:56,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 23:12:56,659 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 23:12:56,705 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 24 transitions and produced 24 states. [2022-02-09 23:12:56,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-09 23:12:56,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-09 23:12:56,706 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-09 23:12:56,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 23:12:56,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1120010346, now seen corresponding path program 1 times [2022-02-09 23:12:56,707 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 23:12:56,707 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531145501] [2022-02-09 23:12:56,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 23:12:56,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 23:12:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 23:12:56,742 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 23:12:56,742 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 23:12:56,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531145501] [2022-02-09 23:12:56,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531145501] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 23:12:56,743 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 23:12:56,743 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 23:12:56,743 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061178138] [2022-02-09 23:12:56,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 23:12:56,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-09 23:12:56,744 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 23:12:56,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-09 23:12:56,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-09 23:12:56,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 23:12:56,745 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 23:12:56,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 23:12:56,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-09 23:12:56,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 23:12:56,780 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 49 transitions and produced 39 states. [2022-02-09 23:12:56,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-09 23:12:56,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-09 23:12:56,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-09 23:12:56,781 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-02-09 23:12:56,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 23:12:56,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1294287696, now seen corresponding path program 2 times [2022-02-09 23:12:56,782 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 23:12:56,782 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673707125] [2022-02-09 23:12:56,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 23:12:56,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 23:12:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 23:12:56,788 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-09 23:12:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 23:12:56,798 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-09 23:12:56,798 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-09 23:12:56,799 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-02-09 23:12:56,800 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-02-09 23:12:56,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-09 23:12:56,804 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1] [2022-02-09 23:12:56,807 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-09 23:12:56,807 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-09 23:12:56,813 INFO L202 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.02 11:12:56 BasicIcfg [2022-02-09 23:12:56,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-09 23:12:56,814 INFO L158 Benchmark]: Toolchain (without parser) took 664.41ms. Allocated memory is still 179.3MB. Free memory was 146.9MB in the beginning and 147.0MB in the end (delta: -102.5kB). Peak memory consumption was 1.3MB. Max. memory is 8.0GB. [2022-02-09 23:12:56,814 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 179.3MB. Free memory is still 147.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 23:12:56,814 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.76ms. Allocated memory is still 179.3MB. Free memory was 146.8MB in the beginning and 145.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-09 23:12:56,815 INFO L158 Benchmark]: Boogie Preprocessor took 9.22ms. Allocated memory is still 179.3MB. Free memory was 145.3MB in the beginning and 144.4MB in the end (delta: 893.7kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-09 23:12:56,815 INFO L158 Benchmark]: RCFGBuilder took 148.13ms. Allocated memory is still 179.3MB. Free memory was 144.3MB in the beginning and 136.5MB in the end (delta: 7.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-02-09 23:12:56,815 INFO L158 Benchmark]: TraceAbstraction took 483.60ms. Allocated memory is still 179.3MB. Free memory was 136.0MB in the beginning and 147.0MB in the end (delta: -11.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 23:12:56,817 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 179.3MB. Free memory is still 147.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.76ms. Allocated memory is still 179.3MB. Free memory was 146.8MB in the beginning and 145.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 9.22ms. Allocated memory is still 179.3MB. Free memory was 145.3MB in the beginning and 144.4MB in the end (delta: 893.7kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 148.13ms. Allocated memory is still 179.3MB. Free memory was 144.3MB in the beginning and 136.5MB in the end (delta: 7.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 483.60ms. Allocated memory is still 179.3MB. Free memory was 136.0MB in the beginning and 147.0MB in the end (delta: -11.0MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 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: 26]: assertion can be violated assertion can be violated We found a FailurePath: [L20] FORK 0 fork 1 Thread1(); [L22] 0 x := 0; VAL [x=0] [L37] 1 x := x + 1; VAL [x=1] [L23] 0 x := 2 * x; VAL [x=2] [L25] JOIN 1 join 1; VAL [x=2] [L26] 0 assert x != 2; VAL [x=2] - UnprovableResult [Line: 17]: 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: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 2, 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: 7, 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 23:12:56,841 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 23:12:57,052 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...