/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/lamport.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 17:54:15,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 17:54:15,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 17:54:15,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 17:54:15,241 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 17:54:15,281 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 17:54:15,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 17:54:15,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 17:54:15,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 17:54:15,285 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 17:54:15,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 17:54:15,285 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 17:54:15,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 17:54:15,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 17:54:15,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 17:54:15,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 17:54:15,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 17:54:15,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 17:54:15,287 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 17:54:15,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 17:54:15,288 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 17:54:15,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 17:54:15,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 17:54:15,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 17:54:15,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 17:54:15,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 17:54:15,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:54:15,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 17:54:15,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 17:54:15,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 17:54:15,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 17:54:15,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 17:54:15,290 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 17:54:15,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 17:54:15,290 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 17:54:15,291 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 17:54:15,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 17:54:15,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 17:54:15,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 17:54:15,632 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 17:54:15,637 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 17:54:15,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl [2021-08-21 17:54:15,638 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/lamport.wvr.bpl' [2021-08-21 17:54:15,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 17:54:15,663 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 17:54:15,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 17:54:15,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 17:54:15,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 17:54:15,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:54:15" (1/1) ... [2021-08-21 17:54:15,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:54:15" (1/1) ... [2021-08-21 17:54:15,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 17:54:15,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 17:54:15,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 17:54:15,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 17:54:15,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:54:15" (1/1) ... [2021-08-21 17:54:15,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:54:15" (1/1) ... [2021-08-21 17:54:15,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:54:15" (1/1) ... [2021-08-21 17:54:15,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:54:15" (1/1) ... [2021-08-21 17:54:15,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:54:15" (1/1) ... [2021-08-21 17:54:15,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:54:15" (1/1) ... [2021-08-21 17:54:15,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:54:15" (1/1) ... [2021-08-21 17:54:15,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 17:54:15,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 17:54:15,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 17:54:15,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 17:54:15,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:54:15" (1/1) ... [2021-08-21 17:54:15,725 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:54:15,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:54:15,761 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 17:54:15,777 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 17:54:15,794 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-21 17:54:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-21 17:54:15,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-21 17:54:15,794 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-21 17:54:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-21 17:54:15,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-21 17:54:15,794 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 17:54:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 17:54:15,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 17:54:15,795 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-21 17:54:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-21 17:54:15,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-21 17:54:15,795 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 17:54:15,958 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 17:54:15,958 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-21 17:54:15,960 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:54:15 BoogieIcfgContainer [2021-08-21 17:54:15,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 17:54:15,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 17:54:15,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 17:54:15,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 17:54:15,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:54:15" (1/2) ... [2021-08-21 17:54:15,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc4c814 and model type lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:54:15, skipping insertion in model container [2021-08-21 17:54:15,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:54:15" (2/2) ... [2021-08-21 17:54:15,966 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.wvr.bpl [2021-08-21 17:54:15,969 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 17:54:15,970 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 17:54:15,970 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 17:54:15,970 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 17:54:16,062 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-08-21 17:54:16,119 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 17:54:16,124 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 17:54:16,129 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-21 17:54:16,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 673 states, 507 states have (on average 1.5502958579881656) internal successors, (786), 672 states have internal predecessors, (786), 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 17:54:16,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-21 17:54:16,441 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:54:16,441 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] [2021-08-21 17:54:16,442 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:54:16,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:54:16,450 INFO L82 PathProgramCache]: Analyzing trace with hash -882657269, now seen corresponding path program 1 times [2021-08-21 17:54:16,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:54:16,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970516024] [2021-08-21 17:54:16,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:54:16,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:54:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:54:16,708 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 17:54:16,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:54:16,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970516024] [2021-08-21 17:54:16,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970516024] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:54:16,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:54:16,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:54:16,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013994766] [2021-08-21 17:54:16,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:54:16,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:54:16,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:54:16,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:54:16,731 INFO L87 Difference]: Start difference. First operand has 673 states, 507 states have (on average 1.5502958579881656) internal successors, (786), 672 states have internal predecessors, (786), 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 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 17:54:16,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:54:16,885 INFO L93 Difference]: Finished difference Result 805 states and 954 transitions. [2021-08-21 17:54:16,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:54:16,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2021-08-21 17:54:16,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:54:16,894 INFO L225 Difference]: With dead ends: 805 [2021-08-21 17:54:16,894 INFO L226 Difference]: Without dead ends: 122 [2021-08-21 17:54:16,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 64.9ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:54:16,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-08-21 17:54:16,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 104. [2021-08-21 17:54:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.4854368932038835) internal successors, (153), 103 states have internal predecessors, (153), 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 17:54:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 153 transitions. [2021-08-21 17:54:16,927 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 153 transitions. Word has length 36 [2021-08-21 17:54:16,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:54:16,927 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 153 transitions. [2021-08-21 17:54:16,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 17:54:16,928 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 153 transitions. [2021-08-21 17:54:16,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-21 17:54:16,929 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:54:16,929 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] [2021-08-21 17:54:16,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 17:54:16,929 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:54:16,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:54:16,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1056890959, now seen corresponding path program 2 times [2021-08-21 17:54:16,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:54:16,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754136041] [2021-08-21 17:54:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:54:16,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:54:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:54:17,012 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 17:54:17,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:54:17,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754136041] [2021-08-21 17:54:17,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754136041] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:54:17,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:54:17,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:54:17,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580460074] [2021-08-21 17:54:17,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:54:17,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:54:17,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:54:17,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:54:17,020 INFO L87 Difference]: Start difference. First operand 104 states and 153 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 17:54:17,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:54:17,088 INFO L93 Difference]: Finished difference Result 128 states and 182 transitions. [2021-08-21 17:54:17,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:54:17,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2021-08-21 17:54:17,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:54:17,090 INFO L225 Difference]: With dead ends: 128 [2021-08-21 17:54:17,090 INFO L226 Difference]: Without dead ends: 91 [2021-08-21 17:54:17,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:54:17,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-08-21 17:54:17,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2021-08-21 17:54:17,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.3902439024390243) internal successors, (114), 82 states have internal predecessors, (114), 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 17:54:17,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 114 transitions. [2021-08-21 17:54:17,098 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 114 transitions. Word has length 36 [2021-08-21 17:54:17,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:54:17,098 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 114 transitions. [2021-08-21 17:54:17,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 17:54:17,099 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 114 transitions. [2021-08-21 17:54:17,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-21 17:54:17,099 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:54:17,100 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] [2021-08-21 17:54:17,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 17:54:17,100 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:54:17,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:54:17,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1635337951, now seen corresponding path program 3 times [2021-08-21 17:54:17,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:54:17,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724182404] [2021-08-21 17:54:17,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:54:17,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:54:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:54:17,207 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 17:54:17,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:54:17,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724182404] [2021-08-21 17:54:17,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724182404] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:54:17,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:54:17,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:54:17,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678526362] [2021-08-21 17:54:17,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:54:17,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:54:17,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:54:17,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:54:17,210 INFO L87 Difference]: Start difference. First operand 83 states and 114 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 17:54:17,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:54:17,292 INFO L93 Difference]: Finished difference Result 156 states and 217 transitions. [2021-08-21 17:54:17,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:54:17,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2021-08-21 17:54:17,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:54:17,296 INFO L225 Difference]: With dead ends: 156 [2021-08-21 17:54:17,296 INFO L226 Difference]: Without dead ends: 130 [2021-08-21 17:54:17,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 60.4ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-08-21 17:54:17,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-08-21 17:54:17,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 73. [2021-08-21 17:54:17,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4027777777777777) internal successors, (101), 72 states have internal predecessors, (101), 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 17:54:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2021-08-21 17:54:17,302 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 36 [2021-08-21 17:54:17,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:54:17,302 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2021-08-21 17:54:17,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 17:54:17,302 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2021-08-21 17:54:17,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-21 17:54:17,303 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:54:17,303 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] [2021-08-21 17:54:17,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 17:54:17,303 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:54:17,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:54:17,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1365064193, now seen corresponding path program 4 times [2021-08-21 17:54:17,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:54:17,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598590314] [2021-08-21 17:54:17,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:54:17,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:54:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:54:17,337 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 17:54:17,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:54:17,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598590314] [2021-08-21 17:54:17,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598590314] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:54:17,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:54:17,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-21 17:54:17,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863604067] [2021-08-21 17:54:17,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 17:54:17,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:54:17,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 17:54:17,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 17:54:17,339 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 17:54:17,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:54:17,364 INFO L93 Difference]: Finished difference Result 69 states and 93 transitions. [2021-08-21 17:54:17,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 17:54:17,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2021-08-21 17:54:17,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:54:17,365 INFO L225 Difference]: With dead ends: 69 [2021-08-21 17:54:17,365 INFO L226 Difference]: Without dead ends: 67 [2021-08-21 17:54:17,365 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 17:54:17,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-08-21 17:54:17,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-08-21 17:54:17,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.378787878787879) internal successors, (91), 66 states have internal predecessors, (91), 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 17:54:17,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2021-08-21 17:54:17,368 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 36 [2021-08-21 17:54:17,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:54:17,369 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2021-08-21 17:54:17,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 17:54:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2021-08-21 17:54:17,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-21 17:54:17,370 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:54:17,370 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] [2021-08-21 17:54:17,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 17:54:17,370 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:54:17,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:54:17,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1677113043, now seen corresponding path program 5 times [2021-08-21 17:54:17,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:54:17,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157325126] [2021-08-21 17:54:17,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:54:17,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:54:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:54:17,395 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 17:54:17,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:54:17,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157325126] [2021-08-21 17:54:17,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157325126] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:54:17,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:54:17,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-21 17:54:17,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818226870] [2021-08-21 17:54:17,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 17:54:17,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:54:17,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 17:54:17,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 17:54:17,398 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 17:54:17,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:54:17,404 INFO L93 Difference]: Finished difference Result 67 states and 89 transitions. [2021-08-21 17:54:17,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 17:54:17,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2021-08-21 17:54:17,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:54:17,405 INFO L225 Difference]: With dead ends: 67 [2021-08-21 17:54:17,405 INFO L226 Difference]: Without dead ends: 67 [2021-08-21 17:54:17,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 17:54:17,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-08-21 17:54:17,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-08-21 17:54:17,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 66 states have internal predecessors, (89), 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 17:54:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 89 transitions. [2021-08-21 17:54:17,409 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 89 transitions. Word has length 36 [2021-08-21 17:54:17,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:54:17,409 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 89 transitions. [2021-08-21 17:54:17,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 17:54:17,409 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 89 transitions. [2021-08-21 17:54:17,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-21 17:54:17,410 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:54:17,410 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] [2021-08-21 17:54:17,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 17:54:17,410 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:54:17,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:54:17,411 INFO L82 PathProgramCache]: Analyzing trace with hash -132086851, now seen corresponding path program 6 times [2021-08-21 17:54:17,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:54:17,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378837392] [2021-08-21 17:54:17,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:54:17,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:54:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:54:17,589 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 17:54:17,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:54:17,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378837392] [2021-08-21 17:54:17,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378837392] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:54:17,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:54:17,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 17:54:17,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385323131] [2021-08-21 17:54:17,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 17:54:17,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:54:17,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 17:54:17,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-21 17:54:17,597 INFO L87 Difference]: Start difference. First operand 67 states and 89 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 17:54:17,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:54:17,741 INFO L93 Difference]: Finished difference Result 85 states and 115 transitions. [2021-08-21 17:54:17,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:54:17,742 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2021-08-21 17:54:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:54:17,743 INFO L225 Difference]: With dead ends: 85 [2021-08-21 17:54:17,743 INFO L226 Difference]: Without dead ends: 81 [2021-08-21 17:54:17,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 161.4ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-08-21 17:54:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-08-21 17:54:17,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 73. [2021-08-21 17:54:17,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 72 states have internal predecessors, (97), 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 17:54:17,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2021-08-21 17:54:17,751 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 36 [2021-08-21 17:54:17,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:54:17,752 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2021-08-21 17:54:17,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 17:54:17,752 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2021-08-21 17:54:17,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-21 17:54:17,753 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:54:17,753 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] [2021-08-21 17:54:17,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 17:54:17,753 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:54:17,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:54:17,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1478839229, now seen corresponding path program 7 times [2021-08-21 17:54:17,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:54:17,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765266397] [2021-08-21 17:54:17,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:54:17,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:54:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:54:17,854 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 17:54:17,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:54:17,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765266397] [2021-08-21 17:54:17,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765266397] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:54:17,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:54:17,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 17:54:17,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978512975] [2021-08-21 17:54:17,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 17:54:17,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:54:17,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 17:54:17,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-21 17:54:17,858 INFO L87 Difference]: Start difference. First operand 73 states and 97 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 17:54:17,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:54:17,966 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2021-08-21 17:54:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:54:17,966 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2021-08-21 17:54:17,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:54:17,967 INFO L225 Difference]: With dead ends: 75 [2021-08-21 17:54:17,967 INFO L226 Difference]: Without dead ends: 66 [2021-08-21 17:54:17,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-08-21 17:54:17,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-21 17:54:17,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-08-21 17:54:17,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 65 states have internal predecessors, (87), 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 17:54:17,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 87 transitions. [2021-08-21 17:54:17,981 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 87 transitions. Word has length 36 [2021-08-21 17:54:17,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:54:17,982 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 87 transitions. [2021-08-21 17:54:17,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 17:54:17,982 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 87 transitions. [2021-08-21 17:54:17,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-21 17:54:17,984 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:54:17,985 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] [2021-08-21 17:54:17,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 17:54:17,985 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:54:17,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:54:17,985 INFO L82 PathProgramCache]: Analyzing trace with hash 100723601, now seen corresponding path program 8 times [2021-08-21 17:54:17,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:54:17,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987140203] [2021-08-21 17:54:17,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:54:17,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:54:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:54:18,110 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 17:54:18,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:54:18,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987140203] [2021-08-21 17:54:18,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987140203] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:54:18,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:54:18,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 17:54:18,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628868096] [2021-08-21 17:54:18,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 17:54:18,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:54:18,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 17:54:18,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-21 17:54:18,115 INFO L87 Difference]: Start difference. First operand 66 states and 87 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 17:54:18,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:54:18,245 INFO L93 Difference]: Finished difference Result 88 states and 118 transitions. [2021-08-21 17:54:18,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:54:18,246 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2021-08-21 17:54:18,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:54:18,246 INFO L225 Difference]: With dead ends: 88 [2021-08-21 17:54:18,246 INFO L226 Difference]: Without dead ends: 84 [2021-08-21 17:54:18,247 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.0ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-08-21 17:54:18,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-21 17:54:18,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2021-08-21 17:54:18,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 73 states have internal predecessors, (98), 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 17:54:18,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2021-08-21 17:54:18,251 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 36 [2021-08-21 17:54:18,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:54:18,251 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2021-08-21 17:54:18,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 17:54:18,251 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2021-08-21 17:54:18,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-21 17:54:18,253 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:54:18,253 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] [2021-08-21 17:54:18,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 17:54:18,254 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:54:18,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:54:18,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1711649681, now seen corresponding path program 9 times [2021-08-21 17:54:18,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:54:18,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543835127] [2021-08-21 17:54:18,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:54:18,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:54:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:54:18,380 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 17:54:18,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:54:18,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543835127] [2021-08-21 17:54:18,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543835127] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:54:18,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:54:18,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 17:54:18,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727786624] [2021-08-21 17:54:18,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 17:54:18,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:54:18,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 17:54:18,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-21 17:54:18,382 INFO L87 Difference]: Start difference. First operand 74 states and 98 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 17:54:18,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:54:18,476 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2021-08-21 17:54:18,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:54:18,476 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2021-08-21 17:54:18,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:54:18,477 INFO L225 Difference]: With dead ends: 76 [2021-08-21 17:54:18,477 INFO L226 Difference]: Without dead ends: 64 [2021-08-21 17:54:18,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.3ms TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-08-21 17:54:18,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-21 17:54:18,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-08-21 17:54:18,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 63 states have internal predecessors, (84), 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 17:54:18,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2021-08-21 17:54:18,479 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 36 [2021-08-21 17:54:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:54:18,480 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2021-08-21 17:54:18,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 17:54:18,480 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2021-08-21 17:54:18,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-21 17:54:18,480 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:54:18,481 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] [2021-08-21 17:54:18,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-21 17:54:18,481 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:54:18,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:54:18,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1326713711, now seen corresponding path program 10 times [2021-08-21 17:54:18,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:54:18,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384533150] [2021-08-21 17:54:18,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:54:18,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:54:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:54:18,538 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 17:54:18,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:54:18,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384533150] [2021-08-21 17:54:18,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384533150] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:54:18,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:54:18,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:54:18,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283507970] [2021-08-21 17:54:18,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:54:18,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:54:18,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:54:18,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:54:18,540 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 17:54:18,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:54:18,580 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2021-08-21 17:54:18,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 17:54:18,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2021-08-21 17:54:18,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:54:18,581 INFO L225 Difference]: With dead ends: 39 [2021-08-21 17:54:18,581 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 17:54:18,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 50.1ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:54:18,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 17:54:18,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 17:54:18,582 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 17:54:18,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 17:54:18,582 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-08-21 17:54:18,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:54:18,583 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 17:54:18,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 17:54:18,584 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 17:54:18,584 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 17:54:18,586 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT [2021-08-21 17:54:18,586 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 17:54:18,588 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 17:54:18,589 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 17:54:18,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-21 17:54:18,595 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 17:54:18,595 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 17:54:18,596 INFO L202 PluginConnector]: Adding new model lamport.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:54:18 BasicIcfg [2021-08-21 17:54:18,596 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 17:54:18,598 INFO L168 Benchmark]: Toolchain (without parser) took 2933.81 ms. Allocated memory was 199.2 MB in the beginning and 251.7 MB in the end (delta: 52.4 MB). Free memory was 179.7 MB in the beginning and 157.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 74.9 MB. Max. memory is 8.0 GB. [2021-08-21 17:54:18,599 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.52 ms. Allocated memory is still 199.2 MB. Free memory was 180.9 MB in the beginning and 180.7 MB in the end (delta: 132.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 17:54:18,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.32 ms. Allocated memory is still 199.2 MB. Free memory was 179.6 MB in the beginning and 178.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:54:18,601 INFO L168 Benchmark]: Boogie Preprocessor took 17.98 ms. Allocated memory is still 199.2 MB. Free memory was 178.1 MB in the beginning and 177.2 MB in the end (delta: 989.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:54:18,601 INFO L168 Benchmark]: RCFGBuilder took 242.27 ms. Allocated memory is still 199.2 MB. Free memory was 177.2 MB in the beginning and 164.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-08-21 17:54:18,601 INFO L168 Benchmark]: TraceAbstraction took 2635.20 ms. Allocated memory was 199.2 MB in the beginning and 251.7 MB in the end (delta: 52.4 MB). Free memory was 164.0 MB in the beginning and 157.8 MB in the end (delta: 6.2 MB). Peak memory consumption was 59.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:54:18,604 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 0.52 ms. Allocated memory is still 199.2 MB. Free memory was 180.9 MB in the beginning and 180.7 MB in the end (delta: 132.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 29.32 ms. Allocated memory is still 199.2 MB. Free memory was 179.6 MB in the beginning and 178.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.98 ms. Allocated memory is still 199.2 MB. Free memory was 178.1 MB in the beginning and 177.2 MB in the end (delta: 989.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 242.27 ms. Allocated memory is still 199.2 MB. Free memory was 177.2 MB in the beginning and 164.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2635.20 ms. Allocated memory was 199.2 MB in the beginning and 251.7 MB in the end (delta: 52.4 MB). Free memory was 164.0 MB in the beginning and 157.8 MB in the end (delta: 6.2 MB). Peak memory consumption was 59.1 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: 1123, positive: 1099, positive conditional: 1099, positive unconditional: 0, negative: 24, negative conditional: 24, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1123, positive: 1099, positive conditional: 0, positive unconditional: 1099, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 206, positive: 194, positive conditional: 0, positive unconditional: 194, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 206, positive: 191, positive conditional: 0, positive unconditional: 191, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 98, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 81, negative conditional: 0, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1123, positive: 905, positive conditional: 0, positive unconditional: 905, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 206, unknown conditional: 0, unknown unconditional: 206] , Statistics on independence cache: Total cache size (in pairs): 206, Positive cache size: 194, Positive conditional cache size: 0, Positive unconditional cache size: 194, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, 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: 71]: 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, 71 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2475.9ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 34.7ms, AutomataDifference: 905.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 284.8ms, PartialOrderReductionTime: 262.5ms, HoareTripleCheckerStatistics: 397 SDtfs, 689 SDslu, 995 SDs, 0 SdLazy, 383 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 267.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 752.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=673occurred in iteration=0, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 69.0ms AutomataMinimizationTime, 10 MinimizatonAttempts, 101 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.3ms SsaConstructionTime, 98.1ms SatisfiabilityAnalysisTime, 870.8ms InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 1066 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 17:54:18,638 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...