/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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr07.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 19:03:56,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 19:03:56,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 19:03:56,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 19:03:56,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 19:03:56,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 19:03:56,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 19:03:56,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 19:03:56,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 19:03:56,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 19:03:56,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 19:03:56,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 19:03:56,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 19:03:56,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 19:03:56,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 19:03:56,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 19:03:56,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-21 19:03:56,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 19:03:56,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 19:03:56,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 19:03:56,146 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-Delay.epf [2021-08-21 19:03:56,173 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 19:03:56,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 19:03:56,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 19:03:56,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 19:03:56,174 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 19:03:56,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 19:03:56,174 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 19:03:56,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 19:03:56,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 19:03:56,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 19:03:56,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 19:03:56,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 19:03:56,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 19:03:56,177 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 19:03:56,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 19:03:56,177 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 19:03:56,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 19:03:56,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 19:03:56,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 19:03:56,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 19:03:56,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 19:03:56,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 19:03:56,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 19:03:56,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 19:03:56,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 19:03:56,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 19:03:56,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 19:03:56,178 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 19:03:56,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 19:03:56,179 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 19:03:56,179 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 19:03:56,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 19:03:56,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 19:03:56,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 19:03:56,469 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 19:03:56,469 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 19:03:56,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr07.bpl [2021-08-21 19:03:56,471 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr07.bpl' [2021-08-21 19:03:56,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 19:03:56,488 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 19:03:56,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 19:03:56,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 19:03:56,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 19:03:56,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:03:56" (1/1) ... [2021-08-21 19:03:56,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:03:56" (1/1) ... [2021-08-21 19:03:56,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 19:03:56,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 19:03:56,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 19:03:56,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 19:03:56,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:03:56" (1/1) ... [2021-08-21 19:03:56,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:03:56" (1/1) ... [2021-08-21 19:03:56,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:03:56" (1/1) ... [2021-08-21 19:03:56,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:03:56" (1/1) ... [2021-08-21 19:03:56,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:03:56" (1/1) ... [2021-08-21 19:03:56,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:03:56" (1/1) ... [2021-08-21 19:03:56,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:03:56" (1/1) ... [2021-08-21 19:03:56,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 19:03:56,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 19:03:56,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 19:03:56,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 19:03:56,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:03:56" (1/1) ... [2021-08-21 19:03:56,530 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 19:03:56,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 19:03:56,558 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) [2021-08-21 19:03:56,578 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 [2021-08-21 19:03:56,599 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 19:03:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 19:03:56,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 19:03:56,599 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-08-21 19:03:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-08-21 19:03:56,600 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-08-21 19:03:56,600 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 19:03:56,690 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 19:03:56,691 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-21 19:03:56,692 INFO L202 PluginConnector]: Adding new model incr-decr07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:03:56 BoogieIcfgContainer [2021-08-21 19:03:56,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 19:03:56,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 19:03:56,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 19:03:56,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 19:03:56,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:03:56" (1/2) ... [2021-08-21 19:03:56,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5324e38a and model type incr-decr07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:03:56, skipping insertion in model container [2021-08-21 19:03:56,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:03:56" (2/2) ... [2021-08-21 19:03:56,697 INFO L111 eAbstractionObserver]: Analyzing ICFG incr-decr07.bpl [2021-08-21 19:03:56,700 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 19:03:56,701 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 19:03:56,701 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 19:03:56,701 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 19:03:56,800 INFO L148 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2021-08-21 19:03:56,828 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 19:03:56,833 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, mConcurrency=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 [2021-08-21 19:03:56,833 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-08-21 19:03:57,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 4375 states, 2796 states have (on average 2.1494992846924177) internal successors, (6010), 4374 states have internal predecessors, (6010), 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) [2021-08-21 19:03:57,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-21 19:03:57,336 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:03:57,337 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 19:03:57,337 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-08-21 19:03:57,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:03:57,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1182273194, now seen corresponding path program 1 times [2021-08-21 19:03:57,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:03:57,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111513692] [2021-08-21 19:03:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:03:57,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:03:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:03:57,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 19:03:57,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:03:57,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111513692] [2021-08-21 19:03:57,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111513692] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 19:03:57,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 19:03:57,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-21 19:03:57,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143465466] [2021-08-21 19:03:57,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 19:03:57,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:03:57,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 19:03:57,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 19:03:57,530 INFO L87 Difference]: Start difference. First operand has 4375 states, 2796 states have (on average 2.1494992846924177) internal successors, (6010), 4374 states have internal predecessors, (6010), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2021-08-21 19:03:57,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:03:57,605 INFO L93 Difference]: Finished difference Result 4756 states and 6637 transitions. [2021-08-21 19:03:57,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 19:03:57,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2021-08-21 19:03:57,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:03:57,619 INFO L225 Difference]: With dead ends: 4756 [2021-08-21 19:03:57,619 INFO L226 Difference]: Without dead ends: 404 [2021-08-21 19:03:57,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 19:03:57,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-08-21 19:03:57,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2021-08-21 19:03:57,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 2.029776674937965) internal successors, (818), 403 states have internal predecessors, (818), 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) [2021-08-21 19:03:57,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 818 transitions. [2021-08-21 19:03:57,663 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 818 transitions. Word has length 23 [2021-08-21 19:03:57,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:03:57,664 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 818 transitions. [2021-08-21 19:03:57,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2021-08-21 19:03:57,664 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 818 transitions. [2021-08-21 19:03:57,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-21 19:03:57,665 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:03:57,666 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 19:03:57,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 19:03:57,666 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-08-21 19:03:57,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:03:57,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1844333804, now seen corresponding path program 1 times [2021-08-21 19:03:57,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:03:57,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180240678] [2021-08-21 19:03:57,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:03:57,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:03:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:03:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:03:57,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:03:57,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180240678] [2021-08-21 19:03:57,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180240678] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 19:03:57,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 19:03:57,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-21 19:03:57,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215676579] [2021-08-21 19:03:57,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-21 19:03:57,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:03:57,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-21 19:03:57,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-21 19:03:57,800 INFO L87 Difference]: Start difference. First operand 404 states and 818 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-08-21 19:03:57,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:03:57,872 INFO L93 Difference]: Finished difference Result 472 states and 1024 transitions. [2021-08-21 19:03:57,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-21 19:03:57,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-08-21 19:03:57,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:03:57,876 INFO L225 Difference]: With dead ends: 472 [2021-08-21 19:03:57,876 INFO L226 Difference]: Without dead ends: 461 [2021-08-21 19:03:57,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-21 19:03:57,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-08-21 19:03:57,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 449. [2021-08-21 19:03:57,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 2.125) internal successors, (952), 448 states have internal predecessors, (952), 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) [2021-08-21 19:03:57,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 952 transitions. [2021-08-21 19:03:57,905 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 952 transitions. Word has length 25 [2021-08-21 19:03:57,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:03:57,905 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 952 transitions. [2021-08-21 19:03:57,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-08-21 19:03:57,905 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 952 transitions. [2021-08-21 19:03:57,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-21 19:03:57,906 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:03:57,907 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 19:03:57,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 19:03:57,907 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-08-21 19:03:57,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:03:57,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1767171030, now seen corresponding path program 1 times [2021-08-21 19:03:57,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:03:57,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657919601] [2021-08-21 19:03:57,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:03:57,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:03:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:03:57,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:03:57,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:03:57,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657919601] [2021-08-21 19:03:57,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657919601] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:03:57,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552492281] [2021-08-21 19:03:57,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:03:58,000 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:03:58,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 19:03:58,013 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 19:03:58,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-21 19:03:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:03:58,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-21 19:03:58,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 19:03:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:03:58,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552492281] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:03:58,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 19:03:58,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-21 19:03:58,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353469866] [2021-08-21 19:03:58,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-21 19:03:58,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:03:58,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-21 19:03:58,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-21 19:03:58,324 INFO L87 Difference]: Start difference. First operand 449 states and 952 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-08-21 19:03:58,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:03:58,395 INFO L93 Difference]: Finished difference Result 604 states and 1347 transitions. [2021-08-21 19:03:58,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 19:03:58,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-08-21 19:03:58,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:03:58,400 INFO L225 Difference]: With dead ends: 604 [2021-08-21 19:03:58,402 INFO L226 Difference]: Without dead ends: 587 [2021-08-21 19:03:58,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.9ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-21 19:03:58,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-08-21 19:03:58,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 532. [2021-08-21 19:03:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 2.135593220338983) internal successors, (1134), 531 states have internal predecessors, (1134), 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) [2021-08-21 19:03:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1134 transitions. [2021-08-21 19:03:58,417 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1134 transitions. Word has length 27 [2021-08-21 19:03:58,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:03:58,418 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 1134 transitions. [2021-08-21 19:03:58,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-08-21 19:03:58,418 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1134 transitions. [2021-08-21 19:03:58,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-21 19:03:58,419 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:03:58,419 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 19:03:58,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-21 19:03:58,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:03:58,625 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-08-21 19:03:58,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:03:58,626 INFO L82 PathProgramCache]: Analyzing trace with hash -506549128, now seen corresponding path program 1 times [2021-08-21 19:03:58,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:03:58,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060594066] [2021-08-21 19:03:58,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:03:58,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:03:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:03:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:03:58,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:03:58,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060594066] [2021-08-21 19:03:58,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060594066] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:03:58,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017246300] [2021-08-21 19:03:58,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:03:58,729 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:03:58,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 19:03:58,733 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 19:03:58,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-21 19:03:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:03:58,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-21 19:03:58,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 19:03:59,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:03:59,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017246300] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:03:59,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 19:03:59,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-21 19:03:59,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661406981] [2021-08-21 19:03:59,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 19:03:59,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:03:59,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 19:03:59,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 19:03:59,004 INFO L87 Difference]: Start difference. First operand 532 states and 1134 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-08-21 19:03:59,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:03:59,105 INFO L93 Difference]: Finished difference Result 784 states and 1696 transitions. [2021-08-21 19:03:59,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 19:03:59,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2021-08-21 19:03:59,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:03:59,108 INFO L225 Difference]: With dead ends: 784 [2021-08-21 19:03:59,108 INFO L226 Difference]: Without dead ends: 755 [2021-08-21 19:03:59,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 19:03:59,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2021-08-21 19:03:59,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 621. [2021-08-21 19:03:59,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 620 states have (on average 2.074193548387097) internal successors, (1286), 620 states have internal predecessors, (1286), 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) [2021-08-21 19:03:59,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1286 transitions. [2021-08-21 19:03:59,122 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1286 transitions. Word has length 29 [2021-08-21 19:03:59,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:03:59,122 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 1286 transitions. [2021-08-21 19:03:59,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-08-21 19:03:59,123 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1286 transitions. [2021-08-21 19:03:59,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-21 19:03:59,125 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:03:59,125 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 19:03:59,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-21 19:03:59,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-08-21 19:03:59,341 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-08-21 19:03:59,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:03:59,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1598015498, now seen corresponding path program 1 times [2021-08-21 19:03:59,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:03:59,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362781842] [2021-08-21 19:03:59,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:03:59,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:03:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:03:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:03:59,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:03:59,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362781842] [2021-08-21 19:03:59,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362781842] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:03:59,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156694082] [2021-08-21 19:03:59,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:03:59,465 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:03:59,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 19:03:59,481 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 19:03:59,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-21 19:03:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:03:59,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-21 19:03:59,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 19:03:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:03:59,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156694082] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:03:59,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 19:03:59,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-08-21 19:03:59,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276617648] [2021-08-21 19:03:59,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 19:03:59,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:03:59,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 19:03:59,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 19:03:59,776 INFO L87 Difference]: Start difference. First operand 621 states and 1286 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-08-21 19:03:59,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:03:59,916 INFO L93 Difference]: Finished difference Result 934 states and 1929 transitions. [2021-08-21 19:03:59,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 19:03:59,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 31 [2021-08-21 19:03:59,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:03:59,919 INFO L225 Difference]: With dead ends: 934 [2021-08-21 19:03:59,919 INFO L226 Difference]: Without dead ends: 881 [2021-08-21 19:03:59,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.6ms TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 19:03:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2021-08-21 19:03:59,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 666. [2021-08-21 19:03:59,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 2.0090225563909776) internal successors, (1336), 665 states have internal predecessors, (1336), 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) [2021-08-21 19:03:59,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1336 transitions. [2021-08-21 19:03:59,931 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1336 transitions. Word has length 31 [2021-08-21 19:03:59,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:03:59,931 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 1336 transitions. [2021-08-21 19:03:59,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-08-21 19:03:59,931 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1336 transitions. [2021-08-21 19:03:59,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-21 19:03:59,932 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:03:59,933 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 19:03:59,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-21 19:04:00,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:00,149 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-08-21 19:04:00,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:04:00,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1363390632, now seen corresponding path program 1 times [2021-08-21 19:04:00,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:04:00,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573194610] [2021-08-21 19:04:00,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:00,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:04:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:00,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:00,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:04:00,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573194610] [2021-08-21 19:04:00,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573194610] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:00,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518715028] [2021-08-21 19:04:00,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:00,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:00,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 19:04:00,240 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 19:04:00,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-21 19:04:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:00,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-21 19:04:00,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 19:04:00,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:00,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518715028] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:00,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 19:04:00,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-21 19:04:00,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807442670] [2021-08-21 19:04:00,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 19:04:00,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:04:00,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 19:04:00,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-21 19:04:00,517 INFO L87 Difference]: Start difference. First operand 666 states and 1336 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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) [2021-08-21 19:04:00,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:04:00,700 INFO L93 Difference]: Finished difference Result 982 states and 1960 transitions. [2021-08-21 19:04:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 19:04:00,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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 33 [2021-08-21 19:04:00,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:04:00,704 INFO L225 Difference]: With dead ends: 982 [2021-08-21 19:04:00,704 INFO L226 Difference]: Without dead ends: 881 [2021-08-21 19:04:00,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.0ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-21 19:04:00,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2021-08-21 19:04:00,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 637. [2021-08-21 19:04:00,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 1.971698113207547) internal successors, (1254), 636 states have internal predecessors, (1254), 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) [2021-08-21 19:04:00,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1254 transitions. [2021-08-21 19:04:00,715 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1254 transitions. Word has length 33 [2021-08-21 19:04:00,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:04:00,716 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 1254 transitions. [2021-08-21 19:04:00,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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) [2021-08-21 19:04:00,716 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1254 transitions. [2021-08-21 19:04:00,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-21 19:04:00,717 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:04:00,717 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 19:04:00,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-21 19:04:00,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:00,934 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-08-21 19:04:00,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:04:00,935 INFO L82 PathProgramCache]: Analyzing trace with hash -864827338, now seen corresponding path program 1 times [2021-08-21 19:04:00,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:04:00,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059532835] [2021-08-21 19:04:00,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:00,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:04:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:01,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:04:01,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059532835] [2021-08-21 19:04:01,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059532835] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:01,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002364195] [2021-08-21 19:04:01,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:01,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:01,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 19:04:01,021 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 19:04:01,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-21 19:04:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:01,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-21 19:04:01,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 19:04:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:01,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002364195] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:01,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 19:04:01,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-08-21 19:04:01,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624507787] [2021-08-21 19:04:01,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 19:04:01,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:04:01,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 19:04:01,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-21 19:04:01,313 INFO L87 Difference]: Start difference. First operand 637 states and 1254 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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) [2021-08-21 19:04:01,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:04:01,508 INFO L93 Difference]: Finished difference Result 898 states and 1761 transitions. [2021-08-21 19:04:01,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 19:04:01,508 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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 35 [2021-08-21 19:04:01,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:04:01,510 INFO L225 Difference]: With dead ends: 898 [2021-08-21 19:04:01,511 INFO L226 Difference]: Without dead ends: 701 [2021-08-21 19:04:01,511 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-21 19:04:01,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2021-08-21 19:04:01,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 518. [2021-08-21 19:04:01,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 1.95357833655706) internal successors, (1010), 517 states have internal predecessors, (1010), 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) [2021-08-21 19:04:01,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 1010 transitions. [2021-08-21 19:04:01,519 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 1010 transitions. Word has length 35 [2021-08-21 19:04:01,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:04:01,520 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 1010 transitions. [2021-08-21 19:04:01,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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) [2021-08-21 19:04:01,520 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 1010 transitions. [2021-08-21 19:04:01,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-21 19:04:01,521 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:04:01,521 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 19:04:01,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-21 19:04:01,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:01,734 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 4 more)] === [2021-08-21 19:04:01,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:04:01,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1850981268, now seen corresponding path program 1 times [2021-08-21 19:04:01,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:04:01,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801349332] [2021-08-21 19:04:01,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:01,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:04:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:01,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:04:01,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801349332] [2021-08-21 19:04:01,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801349332] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:01,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955089040] [2021-08-21 19:04:01,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:01,852 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:01,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 19:04:01,866 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 19:04:01,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-21 19:04:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:01,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 31 conjunts are in the unsatisfiable core [2021-08-21 19:04:01,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 19:04:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:02,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955089040] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:02,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 19:04:02,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-08-21 19:04:02,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731618961] [2021-08-21 19:04:02,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 19:04:02,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:04:02,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 19:04:02,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-21 19:04:02,183 INFO L87 Difference]: Start difference. First operand 518 states and 1010 transitions. Second operand has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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) [2021-08-21 19:04:02,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:04:02,373 INFO L93 Difference]: Finished difference Result 517 states and 1009 transitions. [2021-08-21 19:04:02,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 19:04:02,373 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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 37 [2021-08-21 19:04:02,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:04:02,374 INFO L225 Difference]: With dead ends: 517 [2021-08-21 19:04:02,374 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 19:04:02,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-21 19:04:02,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 19:04:02,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 19:04:02,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-21 19:04:02,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 19:04:02,374 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2021-08-21 19:04:02,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:04:02,374 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 19:04:02,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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) [2021-08-21 19:04:02,375 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 19:04:02,375 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 19:04:02,376 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT [2021-08-21 19:04:02,377 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 19:04:02,377 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 19:04:02,377 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 19:04:02,377 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-08-21 19:04:02,377 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATION [2021-08-21 19:04:02,377 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5INUSE_VIOLATION [2021-08-21 19:04:02,377 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6INUSE_VIOLATION [2021-08-21 19:04:02,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-21 19:04:02,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:02,588 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 19:04:02,588 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 19:04:02,589 INFO L202 PluginConnector]: Adding new model incr-decr07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:04:02 BasicIcfg [2021-08-21 19:04:02,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 19:04:02,590 INFO L168 Benchmark]: Toolchain (without parser) took 6102.06 ms. Allocated memory was 204.5 MB in the beginning and 332.4 MB in the end (delta: 127.9 MB). Free memory was 185.2 MB in the beginning and 250.9 MB in the end (delta: -65.7 MB). Peak memory consumption was 63.3 MB. Max. memory is 8.0 GB. [2021-08-21 19:04:02,591 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.40 ms. Allocated memory is still 204.5 MB. Free memory is still 186.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 19:04:02,591 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.36 ms. Allocated memory is still 204.5 MB. Free memory was 185.2 MB in the beginning and 183.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 19:04:02,591 INFO L168 Benchmark]: Boogie Preprocessor took 11.38 ms. Allocated memory is still 204.5 MB. Free memory was 183.7 MB in the beginning and 182.8 MB in the end (delta: 893.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 19:04:02,591 INFO L168 Benchmark]: RCFGBuilder took 167.27 ms. Allocated memory is still 204.5 MB. Free memory was 182.8 MB in the beginning and 173.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-08-21 19:04:02,591 INFO L168 Benchmark]: TraceAbstraction took 5896.12 ms. Allocated memory was 204.5 MB in the beginning and 332.4 MB in the end (delta: 127.9 MB). Free memory was 172.6 MB in the beginning and 250.9 MB in the end (delta: -78.3 MB). Peak memory consumption was 50.7 MB. Max. memory is 8.0 GB. [2021-08-21 19:04:02,592 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 0.40 ms. Allocated memory is still 204.5 MB. Free memory is still 186.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 19.36 ms. Allocated memory is still 204.5 MB. Free memory was 185.2 MB in the beginning and 183.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.38 ms. Allocated memory is still 204.5 MB. Free memory was 183.7 MB in the beginning and 182.8 MB in the end (delta: 893.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 167.27 ms. Allocated memory is still 204.5 MB. Free memory was 182.8 MB in the beginning and 173.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5896.12 ms. Allocated memory was 204.5 MB in the beginning and 332.4 MB in the end (delta: 127.9 MB). Free memory was 172.6 MB in the beginning and 250.9 MB in the end (delta: -78.3 MB). Peak memory consumption was 50.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 33904, positive: 32268, positive conditional: 32268, positive unconditional: 0, negative: 1636, negative conditional: 1636, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 32268, positive: 32268, positive conditional: 0, positive unconditional: 32268, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 315, positive: 315, positive conditional: 0, positive unconditional: 315, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 315, positive: 231, positive conditional: 0, positive unconditional: 231, negative: 84, negative conditional: 0, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 84, positive: 84, positive conditional: 0, positive unconditional: 84, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 165, positive: 165, positive conditional: 0, positive unconditional: 165, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 32268, positive: 31953, positive conditional: 0, positive unconditional: 31953, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 315, unknown conditional: 0, unknown unconditional: 315] , Statistics on independence cache: Total cache size (in pairs): 315, Positive cache size: 315, Positive conditional cache size: 0, Positive unconditional cache size: 315, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 1636 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 24]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 50 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 5760.0ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 48.1ms, AutomataDifference: 1096.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 464.2ms, PartialOrderReductionTime: 453.9ms, HoareTripleCheckerStatistics: 190 SDtfs, 0 SDslu, 707 SDs, 0 SdLazy, 1789 SolverSat, 224 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 680.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 250 GetRequests, 201 SyntacticMatches, 13 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 210.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4375occurred in iteration=0, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 119.4ms AutomataMinimizationTime, 8 MinimizatonAttempts, 843 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 59.2ms SsaConstructionTime, 191.7ms SatisfiabilityAnalysisTime, 1829.5ms InterpolantComputationTime, 432 NumberOfCodeBlocks, 432 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 418 ConstructedInterpolants, 0 QuantifiedInterpolants, 2838 SizeOfPredicates, 0 NumberOfNonLiveVariables, 852 ConjunctsInSsa, 126 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 13/55 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-21 19:04:02,614 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...