/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/PetersonWithBug.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-10 23:59:45,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 23:59:45,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 23:59:45,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 23:59:45,547 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-FA-NoLbe.epf [2022-02-10 23:59:45,569 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 23:59:45,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 23:59:45,570 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 23:59:45,570 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 23:59:45,570 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 23:59:45,571 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 23:59:45,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 23:59:45,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 23:59:45,571 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 23:59:45,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 23:59:45,572 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 23:59:45,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 23:59:45,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 23:59:45,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 23:59:45,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 23:59:45,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 23:59:45,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 23:59:45,572 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 23:59:45,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 23:59:45,572 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 23:59:45,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 23:59:45,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 23:59:45,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 23:59:45,573 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 23:59:45,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 23:59:45,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:59:45,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 23:59:45,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 23:59:45,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 23:59:45,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 23:59:45,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 23:59:45,574 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 23:59:45,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 23:59:45,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 23:59:45,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 23:59:45,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 23:59:45,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 23:59:45,767 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-10 23:59:45,771 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-10 23:59:45,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/PetersonWithBug.bpl [2022-02-10 23:59:45,772 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/PetersonWithBug.bpl' [2022-02-10 23:59:45,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 23:59:45,795 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-10 23:59:45,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 23:59:45,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 23:59:45,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 23:59:45,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:45" (1/1) ... [2022-02-10 23:59:45,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:45" (1/1) ... [2022-02-10 23:59:45,817 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-10 23:59:45,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 23:59:45,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 23:59:45,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 23:59:45,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 23:59:45,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:45" (1/1) ... [2022-02-10 23:59:45,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:45" (1/1) ... [2022-02-10 23:59:45,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:45" (1/1) ... [2022-02-10 23:59:45,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:45" (1/1) ... [2022-02-10 23:59:45,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:45" (1/1) ... [2022-02-10 23:59:45,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:45" (1/1) ... [2022-02-10 23:59:45,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:45" (1/1) ... [2022-02-10 23:59:45,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 23:59:45,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 23:59:45,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 23:59:45,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 23:59:45,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:45" (1/1) ... [2022-02-10 23:59:45,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:59:45,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:45,873 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) [2022-02-10 23:59:45,891 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 [2022-02-10 23:59:45,917 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process0 given in one single declaration [2022-02-10 23:59:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure Process0 [2022-02-10 23:59:45,917 INFO L138 BoogieDeclarations]: Found implementation of procedure Process0 [2022-02-10 23:59:45,917 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2022-02-10 23:59:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2022-02-10 23:59:45,917 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2022-02-10 23:59:45,917 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-10 23:59:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 23:59:45,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 23:59:45,918 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 23:59:45,954 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 23:59:45,956 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 23:59:46,025 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 23:59:46,032 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 23:59:46,033 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-10 23:59:46,035 INFO L202 PluginConnector]: Adding new model PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:59:46 BoogieIcfgContainer [2022-02-10 23:59:46,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 23:59:46,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 23:59:46,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 23:59:46,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 23:59:46,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:59:45" (1/2) ... [2022-02-10 23:59:46,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e1e170 and model type PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:59:46, skipping insertion in model container [2022-02-10 23:59:46,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:59:46" (2/2) ... [2022-02-10 23:59:46,047 INFO L112 eAbstractionObserver]: Analyzing ICFG PetersonWithBug.bpl [2022-02-10 23:59:46,056 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 23:59:46,056 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 23:59:46,056 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-10 23:59:46,056 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 23:59:46,097 WARN L322 ript$VariableManager]: TermVariable Process0Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:59:46,097 WARN L322 ript$VariableManager]: TermVariable Process0Thread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:59:46,099 WARN L322 ript$VariableManager]: TermVariable Process1Thread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:59:46,099 WARN L322 ript$VariableManager]: TermVariable Process1Thread1of1ForFork1_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:59:46,099 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-10 23:59:46,138 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 23:59:46,144 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=FINITE_AUTOMATA, 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 [2022-02-10 23:59:46,144 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-02-10 23:59:46,153 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 26 transitions, 62 flow [2022-02-10 23:59:46,193 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 204 states, 201 states have (on average 2.4975124378109452) internal successors, (502), 203 states have internal predecessors, (502), 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) [2022-02-10 23:59:46,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 204 states, 201 states have (on average 2.4975124378109452) internal successors, (502), 203 states have internal predecessors, (502), 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) [2022-02-10 23:59:46,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-02-10 23:59:46,202 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:46,202 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-02-10 23:59:46,203 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting Process0Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-02-10 23:59:46,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:46,207 INFO L85 PathProgramCache]: Analyzing trace with hash -2134110811, now seen corresponding path program 1 times [2022-02-10 23:59:46,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:46,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642516555] [2022-02-10 23:59:46,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:46,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:46,320 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:46,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642516555] [2022-02-10 23:59:46,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642516555] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:59:46,321 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:59:46,321 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-02-10 23:59:46,322 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254526727] [2022-02-10 23:59:46,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:59:46,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 23:59:46,325 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:46,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 23:59:46,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 23:59:46,345 INFO L87 Difference]: Start difference. First operand has 204 states, 201 states have (on average 2.4975124378109452) internal successors, (502), 203 states have internal predecessors, (502), 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) [2022-02-10 23:59:46,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:46,384 INFO L93 Difference]: Finished difference Result 159 states and 367 transitions. [2022-02-10 23:59:46,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 23:59:46,388 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 [2022-02-10 23:59:46,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:46,395 INFO L225 Difference]: With dead ends: 159 [2022-02-10 23:59:46,395 INFO L226 Difference]: Without dead ends: 159 [2022-02-10 23:59:46,396 INFO L933 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 [2022-02-10 23:59:46,399 INFO L934 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 [2022-02-10 23:59:46,401 INFO L935 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] [2022-02-10 23:59:46,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-02-10 23:59:46,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2022-02-10 23:59:46,451 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) [2022-02-10 23:59:46,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 357 transitions. [2022-02-10 23:59:46,456 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 357 transitions. Word has length 6 [2022-02-10 23:59:46,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:46,456 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 357 transitions. [2022-02-10 23:59:46,456 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) [2022-02-10 23:59:46,456 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 357 transitions. [2022-02-10 23:59:46,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-10 23:59:46,457 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:46,457 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:46,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 23:59:46,458 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting Process1Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-02-10 23:59:46,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:46,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1025689763, now seen corresponding path program 1 times [2022-02-10 23:59:46,458 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:46,459 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298898600] [2022-02-10 23:59:46,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:46,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:46,515 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:46,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298898600] [2022-02-10 23:59:46,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298898600] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:59:46,516 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:59:46,516 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 23:59:46,516 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449865966] [2022-02-10 23:59:46,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:59:46,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 23:59:46,517 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:46,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 23:59:46,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 23:59:46,518 INFO L87 Difference]: Start difference. First operand 155 states and 357 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-02-10 23:59:46,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:46,547 INFO L93 Difference]: Finished difference Result 159 states and 357 transitions. [2022-02-10 23:59:46,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 23:59:46,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 [2022-02-10 23:59:46,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:46,549 INFO L225 Difference]: With dead ends: 159 [2022-02-10 23:59:46,549 INFO L226 Difference]: Without dead ends: 159 [2022-02-10 23:59:46,550 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-10 23:59:46,551 INFO L934 BasicCegarLoop]: 30 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:46,551 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 57 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:59:46,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-02-10 23:59:46,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 151. [2022-02-10 23:59:46,570 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) [2022-02-10 23:59:46,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 339 transitions. [2022-02-10 23:59:46,573 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 339 transitions. Word has length 12 [2022-02-10 23:59:46,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:46,573 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 339 transitions. [2022-02-10 23:59:46,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-02-10 23:59:46,573 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 339 transitions. [2022-02-10 23:59:46,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-10 23:59:46,574 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:46,574 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:46,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 23:59:46,574 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting Process0Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-02-10 23:59:46,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:46,575 INFO L85 PathProgramCache]: Analyzing trace with hash 73882703, now seen corresponding path program 1 times [2022-02-10 23:59:46,575 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:46,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140860483] [2022-02-10 23:59:46,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:46,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 23:59:46,581 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-10 23:59:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 23:59:46,607 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-10 23:59:46,607 INFO L629 BasicCegarLoop]: Counterexample is feasible [2022-02-10 23:59:46,608 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location Process0Err0ASSERT_VIOLATIONASSERT (5 of 6 remaining) [2022-02-10 23:59:46,609 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location Process0Err0ASSERT_VIOLATIONASSERT (4 of 6 remaining) [2022-02-10 23:59:46,609 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location Process1Err0ASSERT_VIOLATIONASSERT (3 of 6 remaining) [2022-02-10 23:59:46,609 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 6 remaining) [2022-02-10 23:59:46,609 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 6 remaining) [2022-02-10 23:59:46,610 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location Process1Err0ASSERT_VIOLATIONASSERT (0 of 6 remaining) [2022-02-10 23:59:46,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 23:59:46,617 INFO L733 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-10 23:59:46,621 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 23:59:46,621 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 23:59:46,630 INFO L202 PluginConnector]: Adding new model PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:59:46 BasicIcfg [2022-02-10 23:59:46,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 23:59:46,631 INFO L158 Benchmark]: Toolchain (without parser) took 838.86ms. Allocated memory was 192.9MB in the beginning and 245.4MB in the end (delta: 52.4MB). Free memory was 156.9MB in the beginning and 214.2MB in the end (delta: -57.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 23:59:46,631 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 158.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 23:59:46,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.74ms. Allocated memory is still 192.9MB. Free memory was 156.9MB in the beginning and 155.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 23:59:46,632 INFO L158 Benchmark]: Boogie Preprocessor took 10.79ms. Allocated memory is still 192.9MB. Free memory was 155.3MB in the beginning and 154.4MB in the end (delta: 920.2kB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-10 23:59:46,633 INFO L158 Benchmark]: RCFGBuilder took 205.21ms. Allocated memory is still 192.9MB. Free memory was 154.3MB in the beginning and 146.3MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-10 23:59:46,633 INFO L158 Benchmark]: TraceAbstraction took 593.17ms. Allocated memory was 192.9MB in the beginning and 245.4MB in the end (delta: 52.4MB). Free memory was 145.7MB in the beginning and 214.2MB in the end (delta: -68.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 23:59:46,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 158.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.74ms. Allocated memory is still 192.9MB. Free memory was 156.9MB in the beginning and 155.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 10.79ms. Allocated memory is still 192.9MB. Free memory was 155.3MB in the beginning and 154.4MB in the end (delta: 920.2kB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 205.21ms. Allocated memory is still 192.9MB. Free memory was 154.3MB in the beginning and 146.3MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 593.17ms. Allocated memory was 192.9MB in the beginning and 245.4MB in the end (delta: 52.4MB). Free memory was 145.7MB in the beginning and 214.2MB in the end (delta: -68.5MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 48 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred 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: 0.1s 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! [2022-02-10 23:59:46,661 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...