/usr/bin/java -Xmx16000000000 -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-dev-bc79526 [2022-01-18 03:52:58,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 03:52:58,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 03:52:58,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 03:52:58,369 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 [2022-01-18 03:52:58,386 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 03:52:58,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 03:52:58,387 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 03:52:58,387 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 03:52:58,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 03:52:58,403 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 03:52:58,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 03:52:58,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 03:52:58,404 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 03:52:58,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 03:52:58,404 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 03:52:58,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 03:52:58,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 03:52:58,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 03:52:58,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 03:52:58,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 03:52:58,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 03:52:58,405 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 03:52:58,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 03:52:58,405 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 03:52:58,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 03:52:58,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 03:52:58,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 03:52:58,405 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 03:52:58,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 03:52:58,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:52:58,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 03:52:58,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 03:52:58,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 03:52:58,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 03:52:58,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 03:52:58,406 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 03:52:58,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 03:52:58,406 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 03:52:58,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 03:52:58,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 03:52:58,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 03:52:58,602 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 03:52:58,603 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 03:52:58,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/PetersonWithBug.bpl [2022-01-18 03:52:58,604 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/PetersonWithBug.bpl' [2022-01-18 03:52:58,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 03:52:58,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 03:52:58,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 03:52:58,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 03:52:58,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 03:52:58,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:52:58" (1/1) ... [2022-01-18 03:52:58,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:52:58" (1/1) ... [2022-01-18 03:52:58,644 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 03:52:58,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 03:52:58,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 03:52:58,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 03:52:58,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 03:52:58,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:52:58" (1/1) ... [2022-01-18 03:52:58,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:52:58" (1/1) ... [2022-01-18 03:52:58,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:52:58" (1/1) ... [2022-01-18 03:52:58,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:52:58" (1/1) ... [2022-01-18 03:52:58,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:52:58" (1/1) ... [2022-01-18 03:52:58,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:52:58" (1/1) ... [2022-01-18 03:52:58,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:52:58" (1/1) ... [2022-01-18 03:52:58,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 03:52:58,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 03:52:58,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 03:52:58,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 03:52:58,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:52:58" (1/1) ... [2022-01-18 03:52:58,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:52:58,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:52:58,684 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) [2022-01-18 03:52:58,688 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 [2022-01-18 03:52:58,714 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process0 given in one single declaration [2022-01-18 03:52:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure Process0 [2022-01-18 03:52:58,714 INFO L138 BoogieDeclarations]: Found implementation of procedure Process0 [2022-01-18 03:52:58,714 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2022-01-18 03:52:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2022-01-18 03:52:58,715 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2022-01-18 03:52:58,715 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 03:52:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 03:52:58,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 03:52:58,716 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 03:52:58,745 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 03:52:58,746 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 03:52:58,796 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 03:52:58,800 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 03:52:58,801 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 03:52:58,802 INFO L202 PluginConnector]: Adding new model PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:52:58 BoogieIcfgContainer [2022-01-18 03:52:58,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 03:52:58,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 03:52:58,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 03:52:58,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 03:52:58,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:52:58" (1/2) ... [2022-01-18 03:52:58,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42eb62ff and model type PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 03:52:58, skipping insertion in model container [2022-01-18 03:52:58,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:52:58" (2/2) ... [2022-01-18 03:52:58,807 INFO L111 eAbstractionObserver]: Analyzing ICFG PetersonWithBug.bpl [2022-01-18 03:52:58,809 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 03:52:58,810 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 03:52:58,810 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-18 03:52:58,810 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 03:52:58,864 WARN L322 ript$VariableManager]: TermVariabe Process0Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:52:58,864 WARN L322 ript$VariableManager]: TermVariabe Process0Thread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:52:58,866 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:52:58,866 WARN L322 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:52:58,866 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 03:52:58,904 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:52:58,910 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 [2022-01-18 03:52:58,910 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-18 03:52:58,934 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 26 transitions, 62 flow [2022-01-18 03:52:58,982 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) [2022-01-18 03:52:58,983 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) [2022-01-18 03:52:58,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-18 03:52:58,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:52:58,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-18 03:52:58,988 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting Process0Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:52:58,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:52:58,992 INFO L85 PathProgramCache]: Analyzing trace with hash -2134110811, now seen corresponding path program 1 times [2022-01-18 03:52:58,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:52:58,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240968926] [2022-01-18 03:52:58,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:52:58,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:52:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:52:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:52:59,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:52:59,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240968926] [2022-01-18 03:52:59,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240968926] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:52:59,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:52:59,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-01-18 03:52:59,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806765825] [2022-01-18 03:52:59,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:52:59,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 03:52:59,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:52:59,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 03:52:59,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:52:59,128 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) [2022-01-18 03:52:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:52:59,192 INFO L93 Difference]: Finished difference Result 159 states and 367 transitions. [2022-01-18 03:52:59,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 03:52:59,194 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 [2022-01-18 03:52:59,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:52:59,203 INFO L225 Difference]: With dead ends: 159 [2022-01-18 03:52:59,203 INFO L226 Difference]: Without dead ends: 159 [2022-01-18 03:52:59,204 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 [2022-01-18 03:52:59,207 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 [2022-01-18 03:52:59,208 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] [2022-01-18 03:52:59,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-01-18 03:52:59,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2022-01-18 03:52:59,243 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) [2022-01-18 03:52:59,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 357 transitions. [2022-01-18 03:52:59,246 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 357 transitions. Word has length 6 [2022-01-18 03:52:59,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:52:59,246 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 357 transitions. [2022-01-18 03:52:59,246 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) [2022-01-18 03:52:59,247 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 357 transitions. [2022-01-18 03:52:59,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-18 03:52:59,248 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:52:59,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:52:59,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 03:52:59,248 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting Process1Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:52:59,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:52:59,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1025689763, now seen corresponding path program 1 times [2022-01-18 03:52:59,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:52:59,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44583724] [2022-01-18 03:52:59,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:52:59,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:52:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:52:59,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:52:59,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:52:59,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44583724] [2022-01-18 03:52:59,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44583724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:52:59,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:52:59,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 03:52:59,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719558274] [2022-01-18 03:52:59,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:52:59,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 03:52:59,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:52:59,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 03:52:59,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 03:52:59,324 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) [2022-01-18 03:52:59,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:52:59,344 INFO L93 Difference]: Finished difference Result 159 states and 357 transitions. [2022-01-18 03:52:59,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 03:52:59,344 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 [2022-01-18 03:52:59,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:52:59,345 INFO L225 Difference]: With dead ends: 159 [2022-01-18 03:52:59,346 INFO L226 Difference]: Without dead ends: 159 [2022-01-18 03:52:59,346 INFO L932 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 [2022-01-18 03:52:59,347 INFO L933 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 [2022-01-18 03:52:59,347 INFO L934 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] [2022-01-18 03:52:59,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-01-18 03:52:59,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 151. [2022-01-18 03:52:59,355 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) [2022-01-18 03:52:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 339 transitions. [2022-01-18 03:52:59,357 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 339 transitions. Word has length 12 [2022-01-18 03:52:59,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:52:59,357 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 339 transitions. [2022-01-18 03:52:59,357 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) [2022-01-18 03:52:59,357 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 339 transitions. [2022-01-18 03:52:59,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-18 03:52:59,358 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:52:59,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:52:59,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 03:52:59,358 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting Process0Err0ASSERT_VIOLATIONASSERT === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-01-18 03:52:59,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:52:59,359 INFO L85 PathProgramCache]: Analyzing trace with hash 73882703, now seen corresponding path program 1 times [2022-01-18 03:52:59,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:52:59,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242455598] [2022-01-18 03:52:59,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:52:59,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:52:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:52:59,365 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:52:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:52:59,379 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:52:59,379 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:52:59,380 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location Process0Err0ASSERT_VIOLATIONASSERT (5 of 6 remaining) [2022-01-18 03:52:59,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location Process0Err0ASSERT_VIOLATIONASSERT (4 of 6 remaining) [2022-01-18 03:52:59,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location Process1Err0ASSERT_VIOLATIONASSERT (3 of 6 remaining) [2022-01-18 03:52:59,381 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 6 remaining) [2022-01-18 03:52:59,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 6 remaining) [2022-01-18 03:52:59,382 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location Process1Err0ASSERT_VIOLATIONASSERT (0 of 6 remaining) [2022-01-18 03:52:59,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 03:52:59,384 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-18 03:52:59,387 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 03:52:59,387 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 03:52:59,394 INFO L202 PluginConnector]: Adding new model PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 03:52:59 BasicIcfg [2022-01-18 03:52:59,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 03:52:59,394 INFO L158 Benchmark]: Toolchain (without parser) took 775.65ms. Allocated memory was 364.9MB in the beginning and 478.2MB in the end (delta: 113.2MB). Free memory was 325.9MB in the beginning and 443.6MB in the end (delta: -117.7MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:52:59,395 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 364.9MB. Free memory was 326.9MB in the beginning and 326.8MB in the end (delta: 63.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 03:52:59,395 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.31ms. Allocated memory is still 364.9MB. Free memory was 325.8MB in the beginning and 324.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 03:52:59,395 INFO L158 Benchmark]: Boogie Preprocessor took 10.00ms. Allocated memory is still 364.9MB. Free memory was 324.2MB in the beginning and 323.3MB in the end (delta: 987.3kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:52:59,396 INFO L158 Benchmark]: RCFGBuilder took 145.40ms. Allocated memory is still 364.9MB. Free memory was 323.2MB in the beginning and 315.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2022-01-18 03:52:59,396 INFO L158 Benchmark]: TraceAbstraction took 590.73ms. Allocated memory was 364.9MB in the beginning and 478.2MB in the end (delta: 113.2MB). Free memory was 314.7MB in the beginning and 443.6MB in the end (delta: -128.9MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:52:59,398 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 364.9MB. Free memory was 326.9MB in the beginning and 326.8MB in the end (delta: 63.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.31ms. Allocated memory is still 364.9MB. Free memory was 325.8MB in the beginning and 324.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 10.00ms. Allocated memory is still 364.9MB. Free memory was 324.2MB in the beginning and 323.3MB in the end (delta: 987.3kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 145.40ms. Allocated memory is still 364.9MB. Free memory was 323.2MB in the beginning and 315.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * TraceAbstraction took 590.73ms. Allocated memory was 364.9MB in the beginning and 478.2MB in the end (delta: 113.2MB). Free memory was 314.7MB in the beginning and 443.6MB in the end (delta: -128.9MB). There was no memory consumed. Max. memory is 16.0GB. * 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: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.1s 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: 0.0s 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! [2022-01-18 03:52:59,432 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...