/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/security.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 19:30:30,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 19:30:30,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 19:30:30,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 19:30:30,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-06 19:30:30,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-06 19:30:30,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-06 19:30:30,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-06 19:30:30,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-06 19:30:30,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-06 19:30:30,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-06 19:30:30,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-06 19:30:30,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-06 19:30:30,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-06 19:30:30,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-06 19:30:30,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-06 19:30:30,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-06 19:30:30,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-06 19:30:30,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-06 19:30:30,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-06 19:30:30,207 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 [2021-08-06 19:30:30,230 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 19:30:30,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 19:30:30,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 19:30:30,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 19:30:30,231 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 19:30:30,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 19:30:30,232 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 19:30:30,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 19:30:30,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 19:30:30,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 19:30:30,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 19:30:30,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 19:30:30,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 19:30:30,233 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 19:30:30,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 19:30:30,233 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 19:30:30,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 19:30:30,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 19:30:30,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 19:30:30,234 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 19:30:30,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 19:30:30,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:30:30,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 19:30:30,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 19:30:30,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 19:30:30,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 19:30:30,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 19:30:30,235 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 19:30:30,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 19:30:30,236 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-06 19:30:30,236 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 19:30:30,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 19:30:30,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 19:30:30,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 19:30:30,557 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-06 19:30:30,558 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-06 19:30:30,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/security.wvr.bpl [2021-08-06 19:30:30,559 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/security.wvr.bpl' [2021-08-06 19:30:30,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 19:30:30,608 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-06 19:30:30,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 19:30:30,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 19:30:30,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 19:30:30,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:30:30" (1/1) ... [2021-08-06 19:30:30,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:30:30" (1/1) ... [2021-08-06 19:30:30,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 19:30:30,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 19:30:30,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 19:30:30,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 19:30:30,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:30:30" (1/1) ... [2021-08-06 19:30:30,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:30:30" (1/1) ... [2021-08-06 19:30:30,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:30:30" (1/1) ... [2021-08-06 19:30:30,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:30:30" (1/1) ... [2021-08-06 19:30:30,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:30:30" (1/1) ... [2021-08-06 19:30:30,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:30:30" (1/1) ... [2021-08-06 19:30:30,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:30:30" (1/1) ... [2021-08-06 19:30:30,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 19:30:30,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 19:30:30,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 19:30:30,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 19:30:30,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:30:30" (1/1) ... [2021-08-06 19:30:30,668 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:30:30,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:30:30,694 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) [2021-08-06 19:30:30,723 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 [2021-08-06 19:30:30,742 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-06 19:30:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-06 19:30:30,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-06 19:30:30,742 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-06 19:30:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-06 19:30:30,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-06 19:30:30,743 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-06 19:30:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 19:30:30,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 19:30:30,744 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 19:30:30,951 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 19:30:30,951 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-06 19:30:30,954 INFO L202 PluginConnector]: Adding new model security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:30:30 BoogieIcfgContainer [2021-08-06 19:30:30,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 19:30:30,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 19:30:30,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 19:30:30,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 19:30:30,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:30:30" (1/2) ... [2021-08-06 19:30:30,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51daa9d1 and model type security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 07:30:30, skipping insertion in model container [2021-08-06 19:30:30,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:30:30" (2/2) ... [2021-08-06 19:30:30,965 INFO L111 eAbstractionObserver]: Analyzing ICFG security.wvr.bpl [2021-08-06 19:30:30,972 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 19:30:30,974 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 19:30:30,974 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-06 19:30:30,974 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 19:30:31,039 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-06 19:30:31,077 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 19:30:31,082 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 [2021-08-06 19:30:31,083 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-06 19:30:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 68 states have (on average 1.5147058823529411) internal successors, (103), 83 states have internal predecessors, (103), 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) [2021-08-06 19:30:31,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-06 19:30:31,209 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:30:31,210 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:30:31,211 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-06 19:30:31,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:30:31,215 INFO L82 PathProgramCache]: Analyzing trace with hash -256375289, now seen corresponding path program 1 times [2021-08-06 19:30:31,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:30:31,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527381958] [2021-08-06 19:30:31,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:30:31,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:30:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:30:31,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:30:31,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:30:31,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527381958] [2021-08-06 19:30:31,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527381958] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:30:31,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:30:31,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-06 19:30:31,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957350262] [2021-08-06 19:30:31,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 19:30:31,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:30:31,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 19:30:31,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 19:30:31,361 INFO L87 Difference]: Start difference. First operand has 84 states, 68 states have (on average 1.5147058823529411) internal successors, (103), 83 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-08-06 19:30:31,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:30:31,382 INFO L93 Difference]: Finished difference Result 131 states and 156 transitions. [2021-08-06 19:30:31,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 19:30:31,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2021-08-06 19:30:31,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:30:31,390 INFO L225 Difference]: With dead ends: 131 [2021-08-06 19:30:31,390 INFO L226 Difference]: Without dead ends: 36 [2021-08-06 19:30:31,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 19:30:31,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-06 19:30:31,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 22. [2021-08-06 19:30:31,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 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) [2021-08-06 19:30:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-08-06 19:30:31,416 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 16 [2021-08-06 19:30:31,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:30:31,417 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-08-06 19:30:31,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-08-06 19:30:31,417 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-08-06 19:30:31,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-06 19:30:31,418 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:30:31,418 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:30:31,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 19:30:31,418 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-06 19:30:31,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:30:31,419 INFO L82 PathProgramCache]: Analyzing trace with hash 48189701, now seen corresponding path program 1 times [2021-08-06 19:30:31,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:30:31,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503888860] [2021-08-06 19:30:31,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:30:31,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:30:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:30:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:30:31,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:30:31,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503888860] [2021-08-06 19:30:31,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503888860] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:30:31,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:30:31,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-06 19:30:31,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142628837] [2021-08-06 19:30:31,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 19:30:31,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:30:31,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 19:30:31,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 19:30:31,448 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-08-06 19:30:31,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:30:31,455 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-08-06 19:30:31,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 19:30:31,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-08-06 19:30:31,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:30:31,457 INFO L225 Difference]: With dead ends: 30 [2021-08-06 19:30:31,457 INFO L226 Difference]: Without dead ends: 30 [2021-08-06 19:30:31,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 19:30:31,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-06 19:30:31,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 23. [2021-08-06 19:30:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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) [2021-08-06 19:30:31,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-08-06 19:30:31,461 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2021-08-06 19:30:31,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:30:31,462 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-08-06 19:30:31,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-08-06 19:30:31,462 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-08-06 19:30:31,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-06 19:30:31,463 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:30:31,463 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:30:31,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 19:30:31,463 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-06 19:30:31,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:30:31,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1992538394, now seen corresponding path program 1 times [2021-08-06 19:30:31,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:30:31,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124407728] [2021-08-06 19:30:31,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:30:31,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:30:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:30:31,580 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:30:31,583 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:30:31,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:30:31,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:30:31,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124407728] [2021-08-06 19:30:31,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124407728] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:30:31,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:30:31,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:30:31,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326191861] [2021-08-06 19:30:31,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:30:31,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:30:31,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:30:31,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:30:31,604 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-08-06 19:30:31,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:30:31,721 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2021-08-06 19:30:31,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-06 19:30:31,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2021-08-06 19:30:31,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:30:31,723 INFO L225 Difference]: With dead ends: 45 [2021-08-06 19:30:31,723 INFO L226 Difference]: Without dead ends: 40 [2021-08-06 19:30:31,723 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 106.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-06 19:30:31,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-06 19:30:31,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2021-08-06 19:30:31,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 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) [2021-08-06 19:30:31,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-08-06 19:30:31,728 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 18 [2021-08-06 19:30:31,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:30:31,728 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-08-06 19:30:31,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-08-06 19:30:31,729 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-08-06 19:30:31,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-06 19:30:31,732 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:30:31,732 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:30:31,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 19:30:31,733 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-06 19:30:31,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:30:31,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1169678841, now seen corresponding path program 1 times [2021-08-06 19:30:31,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:30:31,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401827593] [2021-08-06 19:30:31,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:30:31,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:30:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:30:31,843 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:30:31,846 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:30:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:30:31,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:30:31,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401827593] [2021-08-06 19:30:31,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401827593] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:30:31,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:30:31,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:30:31,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169552610] [2021-08-06 19:30:31,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:30:31,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:30:31,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:30:31,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:30:31,868 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-08-06 19:30:31,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:30:31,990 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-08-06 19:30:31,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-06 19:30:31,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 18 [2021-08-06 19:30:31,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:30:31,992 INFO L225 Difference]: With dead ends: 38 [2021-08-06 19:30:31,992 INFO L226 Difference]: Without dead ends: 24 [2021-08-06 19:30:31,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 127.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:30:31,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-08-06 19:30:31,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-08-06 19:30:31,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 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) [2021-08-06 19:30:31,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-08-06 19:30:31,995 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 18 [2021-08-06 19:30:31,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:30:31,995 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-08-06 19:30:31,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-08-06 19:30:31,996 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-08-06 19:30:31,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-06 19:30:31,996 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:30:31,996 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:30:31,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 19:30:31,997 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-06 19:30:31,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:30:31,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1283948217, now seen corresponding path program 1 times [2021-08-06 19:30:31,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:30:31,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228806162] [2021-08-06 19:30:31,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:30:31,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:30:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:30:32,146 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:30:32,154 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:30:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:30:32,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:30:32,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228806162] [2021-08-06 19:30:32,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228806162] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:30:32,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:30:32,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:30:32,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737530922] [2021-08-06 19:30:32,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:30:32,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:30:32,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:30:32,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:30:32,181 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-08-06 19:30:32,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:30:32,270 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-08-06 19:30:32,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-06 19:30:32,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 18 [2021-08-06 19:30:32,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:30:32,272 INFO L225 Difference]: With dead ends: 30 [2021-08-06 19:30:32,272 INFO L226 Difference]: Without dead ends: 25 [2021-08-06 19:30:32,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 97.5ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:30:32,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-08-06 19:30:32,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2021-08-06 19:30:32,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 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) [2021-08-06 19:30:32,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-08-06 19:30:32,281 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2021-08-06 19:30:32,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:30:32,282 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-08-06 19:30:32,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-08-06 19:30:32,283 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-08-06 19:30:32,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-06 19:30:32,283 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:30:32,284 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:30:32,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 19:30:32,284 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-06 19:30:32,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:30:32,286 INFO L82 PathProgramCache]: Analyzing trace with hash -461088664, now seen corresponding path program 1 times [2021-08-06 19:30:32,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:30:32,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040530673] [2021-08-06 19:30:32,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:30:32,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:30:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:30:32,408 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:30:32,410 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 47.4 percent of original size [2021-08-06 19:30:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:30:32,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:30:32,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040530673] [2021-08-06 19:30:32,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040530673] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:30:32,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:30:32,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:30:32,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918521075] [2021-08-06 19:30:32,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:30:32,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:30:32,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:30:32,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:30:32,429 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-08-06 19:30:32,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:30:32,549 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-08-06 19:30:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 19:30:32,550 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 18 [2021-08-06 19:30:32,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:30:32,550 INFO L225 Difference]: With dead ends: 23 [2021-08-06 19:30:32,550 INFO L226 Difference]: Without dead ends: 0 [2021-08-06 19:30:32,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 143.4ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-08-06 19:30:32,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-06 19:30:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-06 19:30:32,551 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) [2021-08-06 19:30:32,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-06 19:30:32,551 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-08-06 19:30:32,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:30:32,552 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-06 19:30:32,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-08-06 19:30:32,552 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-06 19:30:32,552 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 19:30:32,554 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT [2021-08-06 19:30:32,555 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 19:30:32,555 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-06 19:30:32,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 19:30:32,558 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 19:30:32,559 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 19:30:32,560 INFO L202 PluginConnector]: Adding new model security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 07:30:32 BasicIcfg [2021-08-06 19:30:32,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 19:30:32,561 INFO L168 Benchmark]: Toolchain (without parser) took 1952.98 ms. Allocated memory is still 194.0 MB. Free memory was 174.0 MB in the beginning and 108.9 MB in the end (delta: 65.0 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. [2021-08-06 19:30:32,563 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 194.0 MB. Free memory was 175.1 MB in the beginning and 175.0 MB in the end (delta: 82.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 19:30:32,565 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.45 ms. Allocated memory is still 194.0 MB. Free memory was 174.0 MB in the beginning and 172.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-06 19:30:32,566 INFO L168 Benchmark]: Boogie Preprocessor took 16.39 ms. Allocated memory is still 194.0 MB. Free memory was 172.4 MB in the beginning and 171.6 MB in the end (delta: 871.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-06 19:30:32,566 INFO L168 Benchmark]: RCFGBuilder took 293.39 ms. Allocated memory is still 194.0 MB. Free memory was 171.5 MB in the beginning and 160.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-08-06 19:30:32,566 INFO L168 Benchmark]: TraceAbstraction took 1603.15 ms. Allocated memory is still 194.0 MB. Free memory was 160.3 MB in the beginning and 108.9 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB. [2021-08-06 19:30:32,567 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 0.21 ms. Allocated memory is still 194.0 MB. Free memory was 175.1 MB in the beginning and 175.0 MB in the end (delta: 82.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 33.45 ms. Allocated memory is still 194.0 MB. Free memory was 174.0 MB in the beginning and 172.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 16.39 ms. Allocated memory is still 194.0 MB. Free memory was 172.4 MB in the beginning and 171.6 MB in the end (delta: 871.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 293.39 ms. Allocated memory is still 194.0 MB. Free memory was 171.5 MB in the beginning and 160.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1603.15 ms. Allocated memory is still 194.0 MB. Free memory was 160.3 MB in the beginning and 108.9 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.4 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: 119, positive: 99, positive conditional: 99, positive unconditional: 0, negative: 20, negative conditional: 20, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 99, positive: 99, positive conditional: 0, positive unconditional: 99, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 99, positive: 99, positive conditional: 0, positive unconditional: 99, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 99, positive: 99, positive conditional: 0, positive unconditional: 99, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 99, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 99, unknown conditional: 0, unknown unconditional: 99] , Statistics on independence cache: Total cache size (in pairs): 99, Positive cache size: 99, Positive conditional cache size: 0, Positive unconditional cache size: 99, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 20 - 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: 69]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 43 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1482.4ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 14.6ms, AutomataDifference: 514.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 118.1ms, PartialOrderReductionTime: 106.0ms, HoareTripleCheckerStatistics: 156 SDtfs, 212 SDslu, 343 SDs, 0 SdLazy, 87 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 482.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=0, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 31.3ms AutomataMinimizationTime, 6 MinimizatonAttempts, 39 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.2ms SsaConstructionTime, 57.7ms SatisfiabilityAnalysisTime, 595.9ms InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 541 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2021-08-06 19:30:32,616 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...