/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/weaver-benchmarks/generated/parallel/ticket-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 17:57:56,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 17:57:56,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 17:57:56,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 17:57:56,671 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 17:57:56,691 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 17:57:56,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 17:57:56,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 17:57:56,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 17:57:56,693 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 17:57:56,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 17:57:56,694 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 17:57:56,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 17:57:56,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 17:57:56,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 17:57:56,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 17:57:56,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 17:57:56,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 17:57:56,695 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 17:57:56,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 17:57:56,696 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 17:57:56,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 17:57:56,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 17:57:56,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 17:57:56,696 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 17:57:56,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 17:57:56,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:57:56,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 17:57:56,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 17:57:56,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 17:57:56,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 17:57:56,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 17:57:56,698 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 17:57:56,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 17:57:56,699 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 17:57:56,699 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 17:57:57,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 17:57:57,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 17:57:57,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 17:57:57,027 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 17:57:57,028 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 17:57:57,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-3.wvr.bpl [2021-08-21 17:57:57,032 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-3.wvr.bpl' [2021-08-21 17:57:57,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 17:57:57,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 17:57:57,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 17:57:57,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 17:57:57,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 17:57:57,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:57:57" (1/1) ... [2021-08-21 17:57:57,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:57:57" (1/1) ... [2021-08-21 17:57:57,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 17:57:57,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 17:57:57,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 17:57:57,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 17:57:57,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:57:57" (1/1) ... [2021-08-21 17:57:57,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:57:57" (1/1) ... [2021-08-21 17:57:57,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:57:57" (1/1) ... [2021-08-21 17:57:57,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:57:57" (1/1) ... [2021-08-21 17:57:57,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:57:57" (1/1) ... [2021-08-21 17:57:57,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:57:57" (1/1) ... [2021-08-21 17:57:57,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:57:57" (1/1) ... [2021-08-21 17:57:57,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 17:57:57,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 17:57:57,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 17:57:57,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 17:57:57,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:57:57" (1/1) ... [2021-08-21 17:57:57,112 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:57:57,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:57:57,134 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 17:57:57,145 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 17:57:57,178 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-21 17:57:57,179 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-21 17:57:57,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-21 17:57:57,179 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-21 17:57:57,179 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-21 17:57:57,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-21 17:57:57,179 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 17:57:57,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 17:57:57,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 17:57:57,180 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-21 17:57:57,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-21 17:57:57,180 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-21 17:57:57,181 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 17:57:57,343 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 17:57:57,344 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-21 17:57:57,346 INFO L202 PluginConnector]: Adding new model ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:57:57 BoogieIcfgContainer [2021-08-21 17:57:57,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 17:57:57,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 17:57:57,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 17:57:57,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 17:57:57,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:57:57" (1/2) ... [2021-08-21 17:57:57,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689b3c1c and model type ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:57:57, skipping insertion in model container [2021-08-21 17:57:57,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:57:57" (2/2) ... [2021-08-21 17:57:57,352 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-3.wvr.bpl [2021-08-21 17:57:57,356 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 17:57:57,356 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 17:57:57,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 17:57:57,357 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 17:57:57,390 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-08-21 17:57:57,424 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 17:57:57,429 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 17:57:57,430 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-21 17:57:57,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 348 states, 268 states have (on average 2.029850746268657) internal successors, (544), 347 states have internal predecessors, (544), 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 17:57:57,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-21 17:57:57,732 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:57:57,733 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 17:57:57,734 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:57:57,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:57:57,741 INFO L82 PathProgramCache]: Analyzing trace with hash -210991088, now seen corresponding path program 1 times [2021-08-21 17:57:57,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:57:57,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970755131] [2021-08-21 17:57:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:57:57,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:57:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:57:57,943 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 17:57:57,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:57:57,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970755131] [2021-08-21 17:57:57,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970755131] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:57:57,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:57:57,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-21 17:57:57,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814896495] [2021-08-21 17:57:57,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-21 17:57:57,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:57:57,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-21 17:57:57,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-21 17:57:57,969 INFO L87 Difference]: Start difference. First operand has 348 states, 268 states have (on average 2.029850746268657) internal successors, (544), 347 states have internal predecessors, (544), 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 5 states, 5 states have (on average 5.0) internal successors, (25), 4 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 17:57:58,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:57:58,050 INFO L93 Difference]: Finished difference Result 502 states and 773 transitions. [2021-08-21 17:57:58,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 17:57:58,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 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 17:57:58,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:57:58,065 INFO L225 Difference]: With dead ends: 502 [2021-08-21 17:57:58,066 INFO L226 Difference]: Without dead ends: 155 [2021-08-21 17:57:58,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.1ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-21 17:57:58,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-08-21 17:57:58,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 152. [2021-08-21 17:57:58,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.8543046357615893) internal successors, (280), 151 states have internal predecessors, (280), 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 17:57:58,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 280 transitions. [2021-08-21 17:57:58,122 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 280 transitions. Word has length 25 [2021-08-21 17:57:58,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:57:58,122 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 280 transitions. [2021-08-21 17:57:58,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 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 17:57:58,123 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 280 transitions. [2021-08-21 17:57:58,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-21 17:57:58,126 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:57:58,126 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 17:57:58,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 17:57:58,126 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:57:58,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:57:58,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1577712242, now seen corresponding path program 2 times [2021-08-21 17:57:58,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:57:58,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445666050] [2021-08-21 17:57:58,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:57:58,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:57:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:57:58,239 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 17:57:58,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:57:58,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445666050] [2021-08-21 17:57:58,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445666050] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:57:58,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:57:58,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-21 17:57:58,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900030634] [2021-08-21 17:57:58,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:57:58,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:57:58,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:57:58,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:57:58,242 INFO L87 Difference]: Start difference. First operand 152 states and 280 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 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 17:57:58,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:57:58,335 INFO L93 Difference]: Finished difference Result 209 states and 374 transitions. [2021-08-21 17:57:58,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 17:57:58,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 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 17:57:58,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:57:58,338 INFO L225 Difference]: With dead ends: 209 [2021-08-21 17:57:58,339 INFO L226 Difference]: Without dead ends: 203 [2021-08-21 17:57:58,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.3ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:57:58,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-08-21 17:57:58,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 157. [2021-08-21 17:57:58,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.8461538461538463) internal successors, (288), 156 states have internal predecessors, (288), 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 17:57:58,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 288 transitions. [2021-08-21 17:57:58,364 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 288 transitions. Word has length 25 [2021-08-21 17:57:58,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:57:58,364 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 288 transitions. [2021-08-21 17:57:58,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 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 17:57:58,364 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 288 transitions. [2021-08-21 17:57:58,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-21 17:57:58,365 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:57:58,365 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 17:57:58,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 17:57:58,366 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:57:58,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:57:58,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1259207984, now seen corresponding path program 3 times [2021-08-21 17:57:58,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:57:58,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898170144] [2021-08-21 17:57:58,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:57:58,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:57:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:57:58,419 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 17:57:58,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:57:58,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898170144] [2021-08-21 17:57:58,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898170144] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:57:58,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:57:58,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-21 17:57:58,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58704091] [2021-08-21 17:57:58,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:57:58,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:57:58,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:57:58,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:57:58,422 INFO L87 Difference]: Start difference. First operand 157 states and 288 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 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 17:57:58,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:57:58,512 INFO L93 Difference]: Finished difference Result 205 states and 367 transitions. [2021-08-21 17:57:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 17:57:58,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 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 17:57:58,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:57:58,514 INFO L225 Difference]: With dead ends: 205 [2021-08-21 17:57:58,514 INFO L226 Difference]: Without dead ends: 201 [2021-08-21 17:57:58,515 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.6ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:57:58,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-08-21 17:57:58,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 155. [2021-08-21 17:57:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.844155844155844) internal successors, (284), 154 states have internal predecessors, (284), 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 17:57:58,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 284 transitions. [2021-08-21 17:57:58,521 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 284 transitions. Word has length 25 [2021-08-21 17:57:58,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:57:58,521 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 284 transitions. [2021-08-21 17:57:58,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 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 17:57:58,521 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 284 transitions. [2021-08-21 17:57:58,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-21 17:57:58,522 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:57:58,522 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 17:57:58,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 17:57:58,523 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:57:58,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:57:58,523 INFO L82 PathProgramCache]: Analyzing trace with hash 2147057010, now seen corresponding path program 4 times [2021-08-21 17:57:58,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:57:58,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45355863] [2021-08-21 17:57:58,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:57:58,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:57:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:57:58,589 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 17:57:58,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:57:58,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45355863] [2021-08-21 17:57:58,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45355863] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:57:58,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:57:58,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:57:58,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171483952] [2021-08-21 17:57:58,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:57:58,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:57:58,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:57:58,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:57:58,595 INFO L87 Difference]: Start difference. First operand 155 states and 284 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 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 17:57:58,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:57:58,698 INFO L93 Difference]: Finished difference Result 212 states and 373 transitions. [2021-08-21 17:57:58,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 17:57:58,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 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 17:57:58,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:57:58,701 INFO L225 Difference]: With dead ends: 212 [2021-08-21 17:57:58,701 INFO L226 Difference]: Without dead ends: 196 [2021-08-21 17:57:58,702 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-08-21 17:57:58,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-08-21 17:57:58,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 150. [2021-08-21 17:57:58,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.832214765100671) internal successors, (273), 149 states have internal predecessors, (273), 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 17:57:58,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 273 transitions. [2021-08-21 17:57:58,714 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 273 transitions. Word has length 25 [2021-08-21 17:57:58,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:57:58,715 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 273 transitions. [2021-08-21 17:57:58,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 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 17:57:58,715 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 273 transitions. [2021-08-21 17:57:58,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-21 17:57:58,715 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:57:58,716 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 17:57:58,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 17:57:58,716 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:57:58,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:57:58,717 INFO L82 PathProgramCache]: Analyzing trace with hash 546483940, now seen corresponding path program 5 times [2021-08-21 17:57:58,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:57:58,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034524630] [2021-08-21 17:57:58,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:57:58,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:57:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:57:58,796 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 17:57:58,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:57:58,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034524630] [2021-08-21 17:57:58,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034524630] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:57:58,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:57:58,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-21 17:57:58,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636000548] [2021-08-21 17:57:58,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:57:58,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:57:58,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:57:58,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:57:58,798 INFO L87 Difference]: Start difference. First operand 150 states and 273 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 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 17:57:58,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:57:58,860 INFO L93 Difference]: Finished difference Result 149 states and 250 transitions. [2021-08-21 17:57:58,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 17:57:58,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 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 17:57:58,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:57:58,863 INFO L225 Difference]: With dead ends: 149 [2021-08-21 17:57:58,863 INFO L226 Difference]: Without dead ends: 137 [2021-08-21 17:57:58,864 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 22.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:57:58,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-08-21 17:57:58,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 124. [2021-08-21 17:57:58,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.6829268292682926) internal successors, (207), 123 states have internal predecessors, (207), 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 17:57:58,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 207 transitions. [2021-08-21 17:57:58,867 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 207 transitions. Word has length 25 [2021-08-21 17:57:58,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:57:58,868 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 207 transitions. [2021-08-21 17:57:58,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 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 17:57:58,868 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 207 transitions. [2021-08-21 17:57:58,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-21 17:57:58,869 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:57:58,869 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 17:57:58,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 17:57:58,869 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:57:58,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:57:58,870 INFO L82 PathProgramCache]: Analyzing trace with hash -2038881594, now seen corresponding path program 6 times [2021-08-21 17:57:58,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:57:58,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144133172] [2021-08-21 17:57:58,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:57:58,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:57:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:57:58,946 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 17:57:58,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:57:58,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144133172] [2021-08-21 17:57:58,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144133172] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:57:58,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:57:58,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:57:58,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626838633] [2021-08-21 17:57:58,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:57:58,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:57:58,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:57:58,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:57:58,953 INFO L87 Difference]: Start difference. First operand 124 states and 207 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 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 17:57:59,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:57:59,044 INFO L93 Difference]: Finished difference Result 160 states and 263 transitions. [2021-08-21 17:57:59,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 17:57:59,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 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 17:57:59,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:57:59,045 INFO L225 Difference]: With dead ends: 160 [2021-08-21 17:57:59,045 INFO L226 Difference]: Without dead ends: 141 [2021-08-21 17:57:59,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 40.5ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-08-21 17:57:59,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-08-21 17:57:59,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 123. [2021-08-21 17:57:59,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.6721311475409837) internal successors, (204), 122 states have internal predecessors, (204), 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 17:57:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 204 transitions. [2021-08-21 17:57:59,050 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 204 transitions. Word has length 25 [2021-08-21 17:57:59,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:57:59,050 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 204 transitions. [2021-08-21 17:57:59,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 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 17:57:59,053 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 204 transitions. [2021-08-21 17:57:59,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-21 17:57:59,059 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:57:59,059 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 17:57:59,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 17:57:59,060 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:57:59,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:57:59,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1094455400, now seen corresponding path program 7 times [2021-08-21 17:57:59,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:57:59,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394971892] [2021-08-21 17:57:59,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:57:59,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:57:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:57:59,123 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 17:57:59,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:57:59,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394971892] [2021-08-21 17:57:59,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394971892] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:57:59,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:57:59,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-21 17:57:59,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134205956] [2021-08-21 17:57:59,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:57:59,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:57:59,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:57:59,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:57:59,125 INFO L87 Difference]: Start difference. First operand 123 states and 204 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 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 17:57:59,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:57:59,194 INFO L93 Difference]: Finished difference Result 105 states and 165 transitions. [2021-08-21 17:57:59,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 17:57:59,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 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 17:57:59,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:57:59,196 INFO L225 Difference]: With dead ends: 105 [2021-08-21 17:57:59,196 INFO L226 Difference]: Without dead ends: 99 [2021-08-21 17:57:59,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.9ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:57:59,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-08-21 17:57:59,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81. [2021-08-21 17:57:59,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.575) internal successors, (126), 80 states have internal predecessors, (126), 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 17:57:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 126 transitions. [2021-08-21 17:57:59,199 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 126 transitions. Word has length 25 [2021-08-21 17:57:59,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:57:59,203 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 126 transitions. [2021-08-21 17:57:59,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 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 17:57:59,204 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 126 transitions. [2021-08-21 17:57:59,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-21 17:57:59,204 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:57:59,204 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 17:57:59,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 17:57:59,205 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:57:59,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:57:59,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1037122908, now seen corresponding path program 8 times [2021-08-21 17:57:59,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:57:59,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716539847] [2021-08-21 17:57:59,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:57:59,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:57:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:57:59,280 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 17:57:59,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:57:59,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716539847] [2021-08-21 17:57:59,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716539847] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:57:59,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:57:59,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:57:59,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806241387] [2021-08-21 17:57:59,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:57:59,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:57:59,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:57:59,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:57:59,282 INFO L87 Difference]: Start difference. First operand 81 states and 126 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 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 17:57:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:57:59,336 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-08-21 17:57:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 17:57:59,337 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 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 17:57:59,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:57:59,340 INFO L225 Difference]: With dead ends: 22 [2021-08-21 17:57:59,340 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 17:57:59,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 55.9ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-08-21 17:57:59,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 17:57:59,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 17:57:59,341 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 17:57:59,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 17:57:59,341 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-08-21 17:57:59,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:57:59,342 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 17:57:59,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 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 17:57:59,342 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 17:57:59,342 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 17:57:59,344 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT [2021-08-21 17:57:59,345 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 17:57:59,346 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 17:57:59,347 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 17:57:59,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 17:57:59,352 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 17:57:59,352 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 17:57:59,354 INFO L202 PluginConnector]: Adding new model ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:57:59 BasicIcfg [2021-08-21 17:57:59,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 17:57:59,356 INFO L168 Benchmark]: Toolchain (without parser) took 2295.23 ms. Allocated memory was 181.4 MB in the beginning and 222.3 MB in the end (delta: 40.9 MB). Free memory was 162.9 MB in the beginning and 176.1 MB in the end (delta: -13.2 MB). Peak memory consumption was 28.7 MB. Max. memory is 8.0 GB. [2021-08-21 17:57:59,357 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.46 ms. Allocated memory is still 181.4 MB. Free memory is still 164.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 17:57:59,357 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.04 ms. Allocated memory is still 181.4 MB. Free memory was 162.8 MB in the beginning and 161.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:57:59,357 INFO L168 Benchmark]: Boogie Preprocessor took 15.83 ms. Allocated memory is still 181.4 MB. Free memory was 161.3 MB in the beginning and 160.4 MB in the end (delta: 874.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:57:59,358 INFO L168 Benchmark]: RCFGBuilder took 241.19 ms. Allocated memory is still 181.4 MB. Free memory was 160.4 MB in the beginning and 147.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-08-21 17:57:59,358 INFO L168 Benchmark]: TraceAbstraction took 2007.03 ms. Allocated memory was 181.4 MB in the beginning and 222.3 MB in the end (delta: 40.9 MB). Free memory was 147.3 MB in the beginning and 176.1 MB in the end (delta: -28.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:57:59,361 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 0.46 ms. Allocated memory is still 181.4 MB. Free memory is still 164.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 26.04 ms. Allocated memory is still 181.4 MB. Free memory was 162.8 MB in the beginning and 161.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 15.83 ms. Allocated memory is still 181.4 MB. Free memory was 161.3 MB in the beginning and 160.4 MB in the end (delta: 874.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 241.19 ms. Allocated memory is still 181.4 MB. Free memory was 160.4 MB in the beginning and 147.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2007.03 ms. Allocated memory was 181.4 MB in the beginning and 222.3 MB in the end (delta: 40.9 MB). Free memory was 147.3 MB in the beginning and 176.1 MB in the end (delta: -28.9 MB). Peak memory consumption was 13.0 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: 621, positive: 566, positive conditional: 566, positive unconditional: 0, negative: 55, negative conditional: 55, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 621, positive: 566, positive conditional: 0, positive unconditional: 566, negative: 55, negative conditional: 0, negative unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 142, positive: 129, positive conditional: 0, positive unconditional: 129, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 142, positive: 120, positive conditional: 0, positive unconditional: 120, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 22, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 92, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 621, positive: 437, positive conditional: 0, positive unconditional: 437, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 142, unknown conditional: 0, unknown unconditional: 142] , Statistics on independence cache: Total cache size (in pairs): 142, Positive cache size: 129, Positive conditional cache size: 0, Positive unconditional cache size: 129, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Independence queries for same thread: 0 - 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: 65]: 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 7 procedures, 53 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1928.7ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 42.3ms, AutomataDifference: 708.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 272.1ms, PartialOrderReductionTime: 258.6ms, HoareTripleCheckerStatistics: 157 SDtfs, 209 SDslu, 440 SDs, 0 SdLazy, 499 SolverSat, 87 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 347.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 270.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=348occurred in iteration=0, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 97.1ms AutomataMinimizationTime, 8 MinimizatonAttempts, 190 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.0ms SsaConstructionTime, 119.9ms SatisfiabilityAnalysisTime, 515.4ms InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 531 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-21 17:57:59,395 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...