/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/PetersonWithBug.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 20:35:18,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 20:35:18,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 20:35:18,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 20:35:18,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 20:35:18,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 20:35:18,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 20:35:18,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 20:35:18,432 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 20:35:18,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 20:35:18,433 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 20:35:18,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 20:35:18,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 20:35:18,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 20:35:18,434 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 20:35:18,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 20:35:18,434 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 20:35:18,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 20:35:18,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 20:35:18,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 20:35:18,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 20:35:18,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 20:35:18,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 20:35:18,436 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 20:35:18,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 20:35:18,436 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 20:35:18,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 20:35:18,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 20:35:18,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 20:35:18,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 20:35:18,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 20:35:18,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:35:18,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 20:35:18,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 20:35:18,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 20:35:18,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 20:35:18,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 20:35:18,438 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 20:35:18,439 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 20:35:18,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 20:35:18,439 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 20:35:18,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 20:35:18,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 20:35:18,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 20:35:18,656 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 20:35:18,657 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 20:35:18,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/PetersonWithBug.bpl [2022-03-15 20:35:18,658 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/PetersonWithBug.bpl' [2022-03-15 20:35:18,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 20:35:18,679 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 20:35:18,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 20:35:18,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 20:35:18,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 20:35:18,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:18" (1/1) ... [2022-03-15 20:35:18,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:18" (1/1) ... [2022-03-15 20:35:18,703 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 20:35:18,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 20:35:18,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 20:35:18,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 20:35:18,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 20:35:18,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:18" (1/1) ... [2022-03-15 20:35:18,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:18" (1/1) ... [2022-03-15 20:35:18,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:18" (1/1) ... [2022-03-15 20:35:18,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:18" (1/1) ... [2022-03-15 20:35:18,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:18" (1/1) ... [2022-03-15 20:35:18,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:18" (1/1) ... [2022-03-15 20:35:18,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:18" (1/1) ... [2022-03-15 20:35:18,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 20:35:18,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 20:35:18,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 20:35:18,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 20:35:18,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:18" (1/1) ... [2022-03-15 20:35:18,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:35:18,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:35:18,752 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) [2022-03-15 20:35:18,770 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 [2022-03-15 20:35:18,788 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process0 given in one single declaration [2022-03-15 20:35:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure Process0 [2022-03-15 20:35:18,789 INFO L138 BoogieDeclarations]: Found implementation of procedure Process0 [2022-03-15 20:35:18,789 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2022-03-15 20:35:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2022-03-15 20:35:18,789 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2022-03-15 20:35:18,789 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 20:35:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 20:35:18,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 20:35:18,790 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 20:35:18,824 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 20:35:18,825 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 20:35:18,908 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 20:35:18,918 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 20:35:18,918 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-15 20:35:18,920 INFO L202 PluginConnector]: Adding new model PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:35:18 BoogieIcfgContainer [2022-03-15 20:35:18,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 20:35:18,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 20:35:18,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 20:35:18,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 20:35:18,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:18" (1/2) ... [2022-03-15 20:35:18,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b9f143f and model type PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 08:35:18, skipping insertion in model container [2022-03-15 20:35:18,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:35:18" (2/2) ... [2022-03-15 20:35:18,933 INFO L111 eAbstractionObserver]: Analyzing ICFG PetersonWithBug.bpl [2022-03-15 20:35:18,943 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 20:35:18,944 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 20:35:18,944 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-03-15 20:35:18,944 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 20:35:18,988 WARN L322 ript$VariableManager]: TermVariabe Process0Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:18,988 WARN L322 ript$VariableManager]: TermVariabe Process0Thread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:18,999 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:18,999 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 20:35:19,000 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-03-15 20:35:19,050 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 20:35:19,058 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 20:35:19,059 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-03-15 20:35:19,080 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 20:35:19,089 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 26 transitions, 62 flow [2022-03-15 20:35:19,092 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 26 transitions, 62 flow [2022-03-15 20:35:19,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 62 flow [2022-03-15 20:35:19,116 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2022-03-15 20:35:19,116 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-03-15 20:35:19,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 24 events. 2/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2022-03-15 20:35:19,123 INFO L116 LiptonReduction]: Number of co-enabled transitions 260 [2022-03-15 20:35:19,178 INFO L131 LiptonReduction]: Checked pairs total: 639 [2022-03-15 20:35:19,179 INFO L133 LiptonReduction]: Total number of compositions: 2 [2022-03-15 20:35:19,185 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 24 transitions, 58 flow [2022-03-15 20:35:19,265 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 171 states, 168 states have (on average 2.5) internal successors, (420), 170 states have internal predecessors, (420), 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) [2022-03-15 20:35:19,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 168 states have (on average 2.5) internal successors, (420), 170 states have internal predecessors, (420), 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) [2022-03-15 20:35:19,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-03-15 20:35:19,272 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:35:19,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-03-15 20:35:19,273 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting Process0Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-03-15 20:35:19,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:35:19,277 INFO L85 PathProgramCache]: Analyzing trace with hash -2134110811, now seen corresponding path program 1 times [2022-03-15 20:35:19,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:35:19,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195723117] [2022-03-15 20:35:19,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:35:19,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:35:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:35:19,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:35:19,369 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:35:19,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195723117] [2022-03-15 20:35:19,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195723117] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:35:19,370 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:35:19,370 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-03-15 20:35:19,371 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [848507271] [2022-03-15 20:35:19,372 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:35:19,373 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:35:19,380 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2022-03-15 20:35:19,380 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:35:19,382 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:35:19,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 20:35:19,383 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:35:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 20:35:19,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:35:19,402 INFO L87 Difference]: Start difference. First operand has 171 states, 168 states have (on average 2.5) internal successors, (420), 170 states have internal predecessors, (420), 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) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:19,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:35:19,432 INFO L93 Difference]: Finished difference Result 159 states and 367 transitions. [2022-03-15 20:35:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:35:19,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-03-15 20:35:19,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:35:19,455 INFO L225 Difference]: With dead ends: 159 [2022-03-15 20:35:19,455 INFO L226 Difference]: Without dead ends: 159 [2022-03-15 20:35:19,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:35:19,477 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:35:19,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:35:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-03-15 20:35:19,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2022-03-15 20:35:19,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 155 states have (on average 2.303225806451613) internal successors, (357), 154 states have internal predecessors, (357), 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) [2022-03-15 20:35:19,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 357 transitions. [2022-03-15 20:35:19,515 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 357 transitions. Word has length 6 [2022-03-15 20:35:19,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:35:19,516 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 357 transitions. [2022-03-15 20:35:19,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:19,516 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 357 transitions. [2022-03-15 20:35:19,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-15 20:35:19,518 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:35:19,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:35:19,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 20:35:19,519 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting Process1Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-03-15 20:35:19,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:35:19,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1025689763, now seen corresponding path program 1 times [2022-03-15 20:35:19,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:35:19,521 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109174867] [2022-03-15 20:35:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:35:19,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:35:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:35:19,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:35:19,575 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:35:19,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109174867] [2022-03-15 20:35:19,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109174867] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:35:19,576 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:35:19,576 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 20:35:19,576 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1588755743] [2022-03-15 20:35:19,576 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:35:19,577 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:35:19,579 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2022-03-15 20:35:19,580 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:35:19,710 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [852#(and (not (= flag0 0)) (not (= turn 1))), 853#(not (= flag0 0))] [2022-03-15 20:35:19,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 20:35:19,712 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:35:19,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 20:35:19,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-15 20:35:19,712 INFO L87 Difference]: Start difference. First operand 155 states and 357 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-03-15 20:35:19,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:35:19,743 INFO L93 Difference]: Finished difference Result 159 states and 357 transitions. [2022-03-15 20:35:19,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 20:35:19,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) Word has length 12 [2022-03-15 20:35:19,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:35:19,745 INFO L225 Difference]: With dead ends: 159 [2022-03-15 20:35:19,745 INFO L226 Difference]: Without dead ends: 159 [2022-03-15 20:35:19,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-03-15 20:35:19,747 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 18 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 20:35:19,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 77 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 20:35:19,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-03-15 20:35:19,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 151. [2022-03-15 20:35:19,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.26) internal successors, (339), 150 states have internal predecessors, (339), 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) [2022-03-15 20:35:19,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 339 transitions. [2022-03-15 20:35:19,760 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 339 transitions. Word has length 12 [2022-03-15 20:35:19,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:35:19,761 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 339 transitions. [2022-03-15 20:35:19,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-03-15 20:35:19,761 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 339 transitions. [2022-03-15 20:35:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-15 20:35:19,762 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:35:19,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:35:19,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 20:35:19,763 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting Process0Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-03-15 20:35:19,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:35:19,763 INFO L85 PathProgramCache]: Analyzing trace with hash 73882703, now seen corresponding path program 1 times [2022-03-15 20:35:19,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:35:19,765 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43789716] [2022-03-15 20:35:19,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:35:19,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:35:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 20:35:19,771 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-15 20:35:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-15 20:35:19,787 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-15 20:35:19,787 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-15 20:35:19,788 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location Process0Err0ASSERT_VIOLATIONASSERT (5 of 6 remaining) [2022-03-15 20:35:19,789 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location Process0Err0ASSERT_VIOLATIONASSERT (4 of 6 remaining) [2022-03-15 20:35:19,789 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location Process1Err0ASSERT_VIOLATIONASSERT (3 of 6 remaining) [2022-03-15 20:35:19,790 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 6 remaining) [2022-03-15 20:35:19,790 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 6 remaining) [2022-03-15 20:35:19,790 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location Process1Err0ASSERT_VIOLATIONASSERT (0 of 6 remaining) [2022-03-15 20:35:19,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 20:35:19,792 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-15 20:35:19,795 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 20:35:19,795 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 20:35:19,804 INFO L202 PluginConnector]: Adding new model PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 08:35:19 BasicIcfg [2022-03-15 20:35:19,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 20:35:19,805 INFO L158 Benchmark]: Toolchain (without parser) took 1125.79ms. Allocated memory was 169.9MB in the beginning and 232.8MB in the end (delta: 62.9MB). Free memory was 131.7MB in the beginning and 184.1MB in the end (delta: -52.4MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. [2022-03-15 20:35:19,806 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 169.9MB. Free memory is still 132.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 20:35:19,806 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.73ms. Allocated memory is still 169.9MB. Free memory was 131.6MB in the beginning and 130.1MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-15 20:35:19,807 INFO L158 Benchmark]: Boogie Preprocessor took 15.62ms. Allocated memory is still 169.9MB. Free memory was 130.1MB in the beginning and 129.1MB in the end (delta: 979.7kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 20:35:19,807 INFO L158 Benchmark]: RCFGBuilder took 198.36ms. Allocated memory is still 169.9MB. Free memory was 129.1MB in the beginning and 121.0MB in the end (delta: 8.1MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-15 20:35:19,808 INFO L158 Benchmark]: TraceAbstraction took 882.08ms. Allocated memory was 169.9MB in the beginning and 232.8MB in the end (delta: 62.9MB). Free memory was 120.5MB in the beginning and 184.1MB in the end (delta: -63.6MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 20:35:19,810 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 169.9MB. Free memory is still 132.7MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.73ms. Allocated memory is still 169.9MB. Free memory was 131.6MB in the beginning and 130.1MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.62ms. Allocated memory is still 169.9MB. Free memory was 130.1MB in the beginning and 129.1MB in the end (delta: 979.7kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 198.36ms. Allocated memory is still 169.9MB. Free memory was 129.1MB in the beginning and 121.0MB in the end (delta: 8.1MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 882.08ms. Allocated memory was 169.9MB in the beginning and 232.8MB in the end (delta: 62.9MB). Free memory was 120.5MB in the beginning and 184.1MB in the end (delta: -63.6MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 31 PlacesBefore, 29 PlacesAfterwards, 26 TransitionsBefore, 24 TransitionsAfterwards, 260 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 639 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 279, positive: 223, positive conditional: 0, positive unconditional: 223, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 91, positive: 79, positive conditional: 0, positive unconditional: 79, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 279, positive: 144, positive conditional: 0, positive unconditional: 144, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 91, unknown conditional: 0, unknown unconditional: 91] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - 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: 40]: assertion can be violated assertion can be violated We found a FailurePath: [L25] 0 critical := 0; VAL [critical=0] [L26] FORK 0 fork 0 Process0(); VAL [critical=0] [L37] 1 turn := 1; VAL [critical=0, turn=1] [L27] FORK 0 fork 1 Process1(); VAL [critical=0, turn=1] [L56] 2 flag1 := 1; VAL [critical=0, flag1=1, turn=1] [L57] 2 turn := 0; VAL [critical=0, flag1=1, turn=0] [L58] 2 assume flag0 == 0 || turn == 1; VAL [critical=0, flag0=0, flag1=1, turn=0] [L59] 2 assert critical == 0; VAL [critical=0, flag0=0, flag1=1, turn=0] [L60] 2 critical := 1; VAL [critical=1, flag0=0, flag1=1, turn=0] [L38] 1 flag0 := 1; VAL [critical=1, flag0=1, flag1=1, turn=0] [L39] 1 assume flag1 == 0 || turn == 0; VAL [critical=1, flag0=1, flag1=1, turn=0] [L40] 1 assert critical == 0; VAL [critical=1, flag0=1, flag1=1, turn=0] - UnprovableResult [Line: 59]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 47 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 104 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 65 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 48 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 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! [2022-03-15 20:35:19,866 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...