/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 17:58:02,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 17:58:02,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 17:58:02,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-21 17:58:02,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-21 17:58:02,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-21 17:58:02,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-21 17:58:02,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-21 17:58:02,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-21 17:58:02,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-21 17:58:02,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-21 17:58:02,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-21 17:58:02,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 17:58:02,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 17:58:02,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 17:58:02,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 17:58:02,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 17:58:02,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 17:58:02,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 17:58:02,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 17:58:02,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 17:58:02,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 17:58:02,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 17:58:02,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 17:58:02,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-21 17:58:02,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 17:58:02,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 17:58:02,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 17:58:02,727 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 17:58:02,756 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 17:58:02,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 17:58:02,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 17:58:02,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 17:58:02,759 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 17:58:02,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 17:58:02,759 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 17:58:02,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 17:58:02,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 17:58:02,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 17:58:02,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 17:58:02,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 17:58:02,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 17:58:02,760 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 17:58:02,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 17:58:02,761 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 17:58:02,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 17:58:02,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 17:58:02,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 17:58:02,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 17:58:02,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 17:58:02,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:58:02,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 17:58:02,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 17:58:02,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 17:58:02,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 17:58:02,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 17:58:02,762 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 17:58:02,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 17:58:02,762 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 17:58:02,762 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 17:58:03,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 17:58:03,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 17:58:03,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 17:58:03,022 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 17:58:03,022 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 17:58:03,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl [2021-08-21 17:58:03,023 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl' [2021-08-21 17:58:03,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 17:58:03,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 17:58:03,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 17:58:03,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 17:58:03,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 17:58:03,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:03" (1/1) ... [2021-08-21 17:58:03,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:03" (1/1) ... [2021-08-21 17:58:03,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 17:58:03,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 17:58:03,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 17:58:03,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 17:58:03,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:03" (1/1) ... [2021-08-21 17:58:03,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:03" (1/1) ... [2021-08-21 17:58:03,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:03" (1/1) ... [2021-08-21 17:58:03,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:03" (1/1) ... [2021-08-21 17:58:03,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:03" (1/1) ... [2021-08-21 17:58:03,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:03" (1/1) ... [2021-08-21 17:58:03,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:03" (1/1) ... [2021-08-21 17:58:03,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 17:58:03,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 17:58:03,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 17:58:03,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 17:58:03,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:03" (1/1) ... [2021-08-21 17:58:03,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:58:03,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:58:03,102 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 17:58:03,128 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 17:58:03,156 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-21 17:58:03,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-21 17:58:03,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-21 17:58:03,157 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-21 17:58:03,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-21 17:58:03,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-21 17:58:03,157 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 17:58:03,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 17:58:03,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 17:58:03,157 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-21 17:58:03,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-21 17:58:03,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-21 17:58:03,158 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-21 17:58:03,158 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-21 17:58:03,158 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-21 17:58:03,158 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-08-21 17:58:03,158 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-08-21 17:58:03,158 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-08-21 17:58:03,158 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 17:58:03,308 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 17:58:03,308 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-21 17:58:03,310 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:58:03 BoogieIcfgContainer [2021-08-21 17:58:03,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 17:58:03,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 17:58:03,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 17:58:03,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 17:58:03,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:03" (1/2) ... [2021-08-21 17:58:03,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f913581 and model type ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:58:03, skipping insertion in model container [2021-08-21 17:58:03,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:58:03" (2/2) ... [2021-08-21 17:58:03,315 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-5.wvr.bpl [2021-08-21 17:58:03,330 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 17:58:03,330 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 17:58:03,330 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 17:58:03,330 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 17:58:03,368 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-08-21 17:58:03,395 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 17:58:03,400 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 17:58:03,400 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-21 17:58:04,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 12444 states, 9550 states have (on average 2.8894240837696334) internal successors, (27594), 12443 states have internal predecessors, (27594), 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 17:58:04,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:04,764 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:04,764 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:04,765 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:04,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:04,811 INFO L82 PathProgramCache]: Analyzing trace with hash 204679104, now seen corresponding path program 1 times [2021-08-21 17:58:04,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:04,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433814449] [2021-08-21 17:58:04,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:04,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:04,926 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 17:58:04,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:04,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433814449] [2021-08-21 17:58:04,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433814449] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:04,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:04,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-21 17:58:04,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735172351] [2021-08-21 17:58:04,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-21 17:58:04,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:04,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-21 17:58:04,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-21 17:58:04,959 INFO L87 Difference]: Start difference. First operand has 12444 states, 9550 states have (on average 2.8894240837696334) internal successors, (27594), 12443 states have internal predecessors, (27594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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 17:58:05,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:05,126 INFO L93 Difference]: Finished difference Result 12865 states and 28600 transitions. [2021-08-21 17:58:05,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 17:58:05,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:05,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:05,168 INFO L225 Difference]: With dead ends: 12865 [2021-08-21 17:58:05,168 INFO L226 Difference]: Without dead ends: 5519 [2021-08-21 17:58:05,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:58:05,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2021-08-21 17:58:05,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 5447. [2021-08-21 17:58:05,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5447 states, 5446 states have (on average 3.0457216305545356) internal successors, (16587), 5446 states have internal predecessors, (16587), 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 17:58:05,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5447 states to 5447 states and 16587 transitions. [2021-08-21 17:58:05,619 INFO L78 Accepts]: Start accepts. Automaton has 5447 states and 16587 transitions. Word has length 39 [2021-08-21 17:58:05,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:05,620 INFO L470 AbstractCegarLoop]: Abstraction has 5447 states and 16587 transitions. [2021-08-21 17:58:05,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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 17:58:05,620 INFO L276 IsEmpty]: Start isEmpty. Operand 5447 states and 16587 transitions. [2021-08-21 17:58:05,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:05,633 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:05,633 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:05,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 17:58:05,634 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:05,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:05,635 INFO L82 PathProgramCache]: Analyzing trace with hash -577001536, now seen corresponding path program 2 times [2021-08-21 17:58:05,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:05,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343897788] [2021-08-21 17:58:05,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:05,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:05,681 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 17:58:05,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:05,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343897788] [2021-08-21 17:58:05,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343897788] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:05,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:05,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-21 17:58:05,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360478240] [2021-08-21 17:58:05,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:58:05,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:05,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:58:05,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:58:05,684 INFO L87 Difference]: Start difference. First operand 5447 states and 16587 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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 17:58:05,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:05,926 INFO L93 Difference]: Finished difference Result 12960 states and 38635 transitions. [2021-08-21 17:58:05,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 17:58:05,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:05,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:05,993 INFO L225 Difference]: With dead ends: 12960 [2021-08-21 17:58:05,993 INFO L226 Difference]: Without dead ends: 12960 [2021-08-21 17:58:05,994 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:58:06,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12960 states. [2021-08-21 17:58:06,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12960 to 6330. [2021-08-21 17:58:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6330 states, 6329 states have (on average 3.034128614315058) internal successors, (19203), 6329 states have internal predecessors, (19203), 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 17:58:06,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6330 states to 6330 states and 19203 transitions. [2021-08-21 17:58:06,218 INFO L78 Accepts]: Start accepts. Automaton has 6330 states and 19203 transitions. Word has length 39 [2021-08-21 17:58:06,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:06,218 INFO L470 AbstractCegarLoop]: Abstraction has 6330 states and 19203 transitions. [2021-08-21 17:58:06,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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 17:58:06,219 INFO L276 IsEmpty]: Start isEmpty. Operand 6330 states and 19203 transitions. [2021-08-21 17:58:06,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:06,233 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:06,233 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:06,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 17:58:06,233 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:06,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:06,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1826948228, now seen corresponding path program 3 times [2021-08-21 17:58:06,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:06,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794278296] [2021-08-21 17:58:06,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:06,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:06,322 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 17:58:06,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:06,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794278296] [2021-08-21 17:58:06,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794278296] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:06,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:06,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-21 17:58:06,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997361791] [2021-08-21 17:58:06,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-21 17:58:06,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:06,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-21 17:58:06,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:58:06,329 INFO L87 Difference]: Start difference. First operand 6330 states and 19203 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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 17:58:06,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:06,819 INFO L93 Difference]: Finished difference Result 15591 states and 44705 transitions. [2021-08-21 17:58:06,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 17:58:06,820 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:06,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:06,862 INFO L225 Difference]: With dead ends: 15591 [2021-08-21 17:58:06,862 INFO L226 Difference]: Without dead ends: 15591 [2021-08-21 17:58:06,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-08-21 17:58:06,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15591 states. [2021-08-21 17:58:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15591 to 8449. [2021-08-21 17:58:07,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8449 states, 8448 states have (on average 2.908499053030303) internal successors, (24571), 8448 states have internal predecessors, (24571), 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 17:58:07,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8449 states to 8449 states and 24571 transitions. [2021-08-21 17:58:07,151 INFO L78 Accepts]: Start accepts. Automaton has 8449 states and 24571 transitions. Word has length 39 [2021-08-21 17:58:07,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:07,151 INFO L470 AbstractCegarLoop]: Abstraction has 8449 states and 24571 transitions. [2021-08-21 17:58:07,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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 17:58:07,151 INFO L276 IsEmpty]: Start isEmpty. Operand 8449 states and 24571 transitions. [2021-08-21 17:58:07,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:07,172 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:07,172 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:07,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 17:58:07,172 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:07,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:07,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1407722628, now seen corresponding path program 4 times [2021-08-21 17:58:07,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:07,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335255126] [2021-08-21 17:58:07,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:07,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:07,263 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 17:58:07,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:07,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335255126] [2021-08-21 17:58:07,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335255126] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:07,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:07,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-21 17:58:07,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713492039] [2021-08-21 17:58:07,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:58:07,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:07,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:58:07,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:58:07,265 INFO L87 Difference]: Start difference. First operand 8449 states and 24571 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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 17:58:07,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:07,345 INFO L93 Difference]: Finished difference Result 12853 states and 37603 transitions. [2021-08-21 17:58:07,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 17:58:07,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:07,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:07,376 INFO L225 Difference]: With dead ends: 12853 [2021-08-21 17:58:07,376 INFO L226 Difference]: Without dead ends: 8621 [2021-08-21 17:58:07,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.8ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:58:07,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8621 states. [2021-08-21 17:58:07,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8621 to 8439. [2021-08-21 17:58:07,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8439 states, 8438 states have (on average 2.854467883384688) internal successors, (24086), 8438 states have internal predecessors, (24086), 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 17:58:07,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8439 states to 8439 states and 24086 transitions. [2021-08-21 17:58:07,611 INFO L78 Accepts]: Start accepts. Automaton has 8439 states and 24086 transitions. Word has length 39 [2021-08-21 17:58:07,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:07,611 INFO L470 AbstractCegarLoop]: Abstraction has 8439 states and 24086 transitions. [2021-08-21 17:58:07,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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 17:58:07,611 INFO L276 IsEmpty]: Start isEmpty. Operand 8439 states and 24086 transitions. [2021-08-21 17:58:07,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:07,626 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:07,626 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:07,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 17:58:07,627 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:07,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:07,627 INFO L82 PathProgramCache]: Analyzing trace with hash 812253214, now seen corresponding path program 5 times [2021-08-21 17:58:07,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:07,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437224426] [2021-08-21 17:58:07,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:07,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:07,684 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 17:58:07,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:07,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437224426] [2021-08-21 17:58:07,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437224426] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:07,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:07,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:58:07,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733841786] [2021-08-21 17:58:07,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 17:58:07,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:07,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 17:58:07,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-21 17:58:07,686 INFO L87 Difference]: Start difference. First operand 8439 states and 24086 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 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 17:58:08,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:08,051 INFO L93 Difference]: Finished difference Result 16007 states and 42244 transitions. [2021-08-21 17:58:08,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-21 17:58:08,051 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:08,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:08,087 INFO L225 Difference]: With dead ends: 16007 [2021-08-21 17:58:08,088 INFO L226 Difference]: Without dead ends: 15146 [2021-08-21 17:58:08,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 62.1ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:58:08,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15146 states. [2021-08-21 17:58:08,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15146 to 7776. [2021-08-21 17:58:08,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7776 states, 7775 states have (on average 2.707395498392283) internal successors, (21050), 7775 states have internal predecessors, (21050), 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 17:58:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7776 states to 7776 states and 21050 transitions. [2021-08-21 17:58:08,268 INFO L78 Accepts]: Start accepts. Automaton has 7776 states and 21050 transitions. Word has length 39 [2021-08-21 17:58:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:08,268 INFO L470 AbstractCegarLoop]: Abstraction has 7776 states and 21050 transitions. [2021-08-21 17:58:08,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 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 17:58:08,268 INFO L276 IsEmpty]: Start isEmpty. Operand 7776 states and 21050 transitions. [2021-08-21 17:58:08,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:08,282 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:08,282 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:08,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 17:58:08,283 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:08,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:08,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1995611332, now seen corresponding path program 6 times [2021-08-21 17:58:08,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:08,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425734940] [2021-08-21 17:58:08,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:08,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:08,449 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 17:58:08,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:08,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425734940] [2021-08-21 17:58:08,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425734940] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:08,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:08,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-21 17:58:08,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710666531] [2021-08-21 17:58:08,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-21 17:58:08,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:08,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-21 17:58:08,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:58:08,450 INFO L87 Difference]: Start difference. First operand 7776 states and 21050 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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 17:58:08,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:08,907 INFO L93 Difference]: Finished difference Result 14270 states and 37365 transitions. [2021-08-21 17:58:08,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 17:58:08,908 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:08,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:08,939 INFO L225 Difference]: With dead ends: 14270 [2021-08-21 17:58:08,939 INFO L226 Difference]: Without dead ends: 13168 [2021-08-21 17:58:08,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 179.9ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-08-21 17:58:08,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13168 states. [2021-08-21 17:58:09,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13168 to 7494. [2021-08-21 17:58:09,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7494 states, 7493 states have (on average 2.707860669958628) internal successors, (20290), 7493 states have internal predecessors, (20290), 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 17:58:09,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7494 states to 7494 states and 20290 transitions. [2021-08-21 17:58:09,198 INFO L78 Accepts]: Start accepts. Automaton has 7494 states and 20290 transitions. Word has length 39 [2021-08-21 17:58:09,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:09,198 INFO L470 AbstractCegarLoop]: Abstraction has 7494 states and 20290 transitions. [2021-08-21 17:58:09,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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 17:58:09,198 INFO L276 IsEmpty]: Start isEmpty. Operand 7494 states and 20290 transitions. [2021-08-21 17:58:09,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:09,211 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:09,211 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:09,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 17:58:09,212 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:09,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:09,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1372898600, now seen corresponding path program 7 times [2021-08-21 17:58:09,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:09,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609748309] [2021-08-21 17:58:09,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:09,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:09,268 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 17:58:09,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:09,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609748309] [2021-08-21 17:58:09,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609748309] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:09,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:09,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:58:09,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102687654] [2021-08-21 17:58:09,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 17:58:09,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:09,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 17:58:09,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-21 17:58:09,269 INFO L87 Difference]: Start difference. First operand 7494 states and 20290 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 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 17:58:09,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:09,574 INFO L93 Difference]: Finished difference Result 13290 states and 33861 transitions. [2021-08-21 17:58:09,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-21 17:58:09,575 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:09,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:09,606 INFO L225 Difference]: With dead ends: 13290 [2021-08-21 17:58:09,607 INFO L226 Difference]: Without dead ends: 12905 [2021-08-21 17:58:09,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 65.1ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:58:09,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12905 states. [2021-08-21 17:58:09,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12905 to 7299. [2021-08-21 17:58:09,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7299 states, 7298 states have (on average 2.5791997807618525) internal successors, (18823), 7298 states have internal predecessors, (18823), 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 17:58:09,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7299 states to 7299 states and 18823 transitions. [2021-08-21 17:58:09,796 INFO L78 Accepts]: Start accepts. Automaton has 7299 states and 18823 transitions. Word has length 39 [2021-08-21 17:58:09,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:09,796 INFO L470 AbstractCegarLoop]: Abstraction has 7299 states and 18823 transitions. [2021-08-21 17:58:09,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 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 17:58:09,797 INFO L276 IsEmpty]: Start isEmpty. Operand 7299 states and 18823 transitions. [2021-08-21 17:58:09,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:09,809 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:09,809 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:09,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 17:58:09,810 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:09,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:09,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1399567846, now seen corresponding path program 8 times [2021-08-21 17:58:09,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:09,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184517093] [2021-08-21 17:58:09,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:09,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:09,881 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 17:58:09,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:09,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184517093] [2021-08-21 17:58:09,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184517093] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:09,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:09,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-21 17:58:09,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96324124] [2021-08-21 17:58:09,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-21 17:58:09,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:09,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-21 17:58:09,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:58:09,883 INFO L87 Difference]: Start difference. First operand 7299 states and 18823 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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 17:58:10,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:10,319 INFO L93 Difference]: Finished difference Result 12625 states and 32209 transitions. [2021-08-21 17:58:10,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 17:58:10,319 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:10,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:10,344 INFO L225 Difference]: With dead ends: 12625 [2021-08-21 17:58:10,344 INFO L226 Difference]: Without dead ends: 12314 [2021-08-21 17:58:10,345 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 111.1ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-08-21 17:58:10,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12314 states. [2021-08-21 17:58:10,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12314 to 7233. [2021-08-21 17:58:10,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7233 states, 7232 states have (on average 2.5869745575221237) internal successors, (18709), 7232 states have internal predecessors, (18709), 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 17:58:10,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7233 states to 7233 states and 18709 transitions. [2021-08-21 17:58:10,483 INFO L78 Accepts]: Start accepts. Automaton has 7233 states and 18709 transitions. Word has length 39 [2021-08-21 17:58:10,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:10,484 INFO L470 AbstractCegarLoop]: Abstraction has 7233 states and 18709 transitions. [2021-08-21 17:58:10,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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 17:58:10,484 INFO L276 IsEmpty]: Start isEmpty. Operand 7233 states and 18709 transitions. [2021-08-21 17:58:10,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:10,494 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:10,494 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:10,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 17:58:10,495 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:10,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:10,495 INFO L82 PathProgramCache]: Analyzing trace with hash -144266648, now seen corresponding path program 9 times [2021-08-21 17:58:10,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:10,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505096110] [2021-08-21 17:58:10,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:10,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:10,535 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 17:58:10,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:10,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505096110] [2021-08-21 17:58:10,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505096110] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:10,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:10,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:58:10,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117964225] [2021-08-21 17:58:10,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:58:10,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:10,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:58:10,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:58:10,536 INFO L87 Difference]: Start difference. First operand 7233 states and 18709 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 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 17:58:10,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:10,739 INFO L93 Difference]: Finished difference Result 12295 states and 30364 transitions. [2021-08-21 17:58:10,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:58:10,740 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:10,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:10,761 INFO L225 Difference]: With dead ends: 12295 [2021-08-21 17:58:10,761 INFO L226 Difference]: Without dead ends: 12213 [2021-08-21 17:58:10,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 33.9ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:58:10,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12213 states. [2021-08-21 17:58:10,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12213 to 7726. [2021-08-21 17:58:10,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7726 states, 7725 states have (on average 2.493462783171521) internal successors, (19262), 7725 states have internal predecessors, (19262), 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 17:58:10,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7726 states to 7726 states and 19262 transitions. [2021-08-21 17:58:10,929 INFO L78 Accepts]: Start accepts. Automaton has 7726 states and 19262 transitions. Word has length 39 [2021-08-21 17:58:10,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:10,929 INFO L470 AbstractCegarLoop]: Abstraction has 7726 states and 19262 transitions. [2021-08-21 17:58:10,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 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 17:58:10,930 INFO L276 IsEmpty]: Start isEmpty. Operand 7726 states and 19262 transitions. [2021-08-21 17:58:10,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:10,942 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:10,942 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:10,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-21 17:58:10,942 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:10,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:10,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1416786248, now seen corresponding path program 10 times [2021-08-21 17:58:10,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:10,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616956193] [2021-08-21 17:58:10,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:10,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:11,008 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 17:58:11,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:11,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616956193] [2021-08-21 17:58:11,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616956193] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:11,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:11,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:58:11,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107632702] [2021-08-21 17:58:11,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 17:58:11,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:11,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 17:58:11,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-21 17:58:11,010 INFO L87 Difference]: Start difference. First operand 7726 states and 19262 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 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 17:58:11,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:11,271 INFO L93 Difference]: Finished difference Result 10366 states and 24312 transitions. [2021-08-21 17:58:11,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-21 17:58:11,272 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:11,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:11,288 INFO L225 Difference]: With dead ends: 10366 [2021-08-21 17:58:11,288 INFO L226 Difference]: Without dead ends: 9897 [2021-08-21 17:58:11,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 63.8ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:58:11,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9897 states. [2021-08-21 17:58:11,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9897 to 7051. [2021-08-21 17:58:11,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7050 states have (on average 2.440851063829787) internal successors, (17208), 7050 states have internal predecessors, (17208), 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 17:58:11,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 17208 transitions. [2021-08-21 17:58:11,417 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 17208 transitions. Word has length 39 [2021-08-21 17:58:11,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:11,417 INFO L470 AbstractCegarLoop]: Abstraction has 7051 states and 17208 transitions. [2021-08-21 17:58:11,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 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 17:58:11,417 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 17208 transitions. [2021-08-21 17:58:11,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:11,428 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:11,428 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:11,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-21 17:58:11,428 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:11,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:11,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1339449392, now seen corresponding path program 11 times [2021-08-21 17:58:11,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:11,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724389175] [2021-08-21 17:58:11,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:11,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:11,495 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 17:58:11,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:11,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724389175] [2021-08-21 17:58:11,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724389175] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:11,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:11,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-21 17:58:11,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907977268] [2021-08-21 17:58:11,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-21 17:58:11,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:11,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-21 17:58:11,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:58:11,497 INFO L87 Difference]: Start difference. First operand 7051 states and 17208 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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 17:58:11,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:11,906 INFO L93 Difference]: Finished difference Result 10070 states and 23892 transitions. [2021-08-21 17:58:11,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 17:58:11,906 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:11,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:11,922 INFO L225 Difference]: With dead ends: 10070 [2021-08-21 17:58:11,922 INFO L226 Difference]: Without dead ends: 9745 [2021-08-21 17:58:11,922 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 106.4ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-08-21 17:58:11,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9745 states. [2021-08-21 17:58:12,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9745 to 6919. [2021-08-21 17:58:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6919 states, 6918 states have (on average 2.452153801676785) internal successors, (16964), 6918 states have internal predecessors, (16964), 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 17:58:12,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6919 states to 6919 states and 16964 transitions. [2021-08-21 17:58:12,048 INFO L78 Accepts]: Start accepts. Automaton has 6919 states and 16964 transitions. Word has length 39 [2021-08-21 17:58:12,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:12,048 INFO L470 AbstractCegarLoop]: Abstraction has 6919 states and 16964 transitions. [2021-08-21 17:58:12,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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 17:58:12,048 INFO L276 IsEmpty]: Start isEmpty. Operand 6919 states and 16964 transitions. [2021-08-21 17:58:12,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:12,058 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:12,058 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:12,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-21 17:58:12,058 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:12,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:12,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1170635940, now seen corresponding path program 12 times [2021-08-21 17:58:12,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:12,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589003127] [2021-08-21 17:58:12,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:12,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:12,089 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 17:58:12,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:12,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589003127] [2021-08-21 17:58:12,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589003127] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:12,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:12,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-21 17:58:12,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010582711] [2021-08-21 17:58:12,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:58:12,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:12,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:58:12,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:58:12,090 INFO L87 Difference]: Start difference. First operand 6919 states and 16964 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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 17:58:12,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:12,202 INFO L93 Difference]: Finished difference Result 11577 states and 28104 transitions. [2021-08-21 17:58:12,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 17:58:12,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:12,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:12,222 INFO L225 Difference]: With dead ends: 11577 [2021-08-21 17:58:12,223 INFO L226 Difference]: Without dead ends: 11577 [2021-08-21 17:58:12,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:58:12,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11577 states. [2021-08-21 17:58:12,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11577 to 6883. [2021-08-21 17:58:12,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6883 states, 6882 states have (on average 2.433449578610869) internal successors, (16747), 6882 states have internal predecessors, (16747), 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 17:58:12,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 16747 transitions. [2021-08-21 17:58:12,354 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 16747 transitions. Word has length 39 [2021-08-21 17:58:12,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:12,354 INFO L470 AbstractCegarLoop]: Abstraction has 6883 states and 16747 transitions. [2021-08-21 17:58:12,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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 17:58:12,355 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 16747 transitions. [2021-08-21 17:58:12,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:12,364 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:12,364 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:12,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-21 17:58:12,365 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:12,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:12,365 INFO L82 PathProgramCache]: Analyzing trace with hash -2088074600, now seen corresponding path program 13 times [2021-08-21 17:58:12,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:12,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090247089] [2021-08-21 17:58:12,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:12,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:12,423 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 17:58:12,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:12,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090247089] [2021-08-21 17:58:12,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090247089] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:12,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:12,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 17:58:12,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681215978] [2021-08-21 17:58:12,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 17:58:12,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:12,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 17:58:12,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-21 17:58:12,425 INFO L87 Difference]: Start difference. First operand 6883 states and 16747 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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 17:58:12,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:12,713 INFO L93 Difference]: Finished difference Result 11905 states and 28206 transitions. [2021-08-21 17:58:12,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 17:58:12,713 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:12,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:12,732 INFO L225 Difference]: With dead ends: 11905 [2021-08-21 17:58:12,732 INFO L226 Difference]: Without dead ends: 11809 [2021-08-21 17:58:12,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 65.5ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-21 17:58:12,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11809 states. [2021-08-21 17:58:12,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11809 to 7093. [2021-08-21 17:58:12,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7093 states, 7092 states have (on average 2.4077834179357023) internal successors, (17076), 7092 states have internal predecessors, (17076), 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 17:58:12,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7093 states to 7093 states and 17076 transitions. [2021-08-21 17:58:12,872 INFO L78 Accepts]: Start accepts. Automaton has 7093 states and 17076 transitions. Word has length 39 [2021-08-21 17:58:12,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:12,873 INFO L470 AbstractCegarLoop]: Abstraction has 7093 states and 17076 transitions. [2021-08-21 17:58:12,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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 17:58:12,873 INFO L276 IsEmpty]: Start isEmpty. Operand 7093 states and 17076 transitions. [2021-08-21 17:58:12,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:12,882 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:12,882 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:12,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-21 17:58:12,882 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:12,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:12,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1598844582, now seen corresponding path program 14 times [2021-08-21 17:58:12,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:12,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026158334] [2021-08-21 17:58:12,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:12,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:12,960 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 17:58:12,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:12,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026158334] [2021-08-21 17:58:12,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026158334] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:12,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:12,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:58:12,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921257754] [2021-08-21 17:58:12,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:58:12,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:12,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:58:12,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:58:12,962 INFO L87 Difference]: Start difference. First operand 7093 states and 17076 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 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 17:58:13,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:13,138 INFO L93 Difference]: Finished difference Result 10183 states and 22901 transitions. [2021-08-21 17:58:13,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:58:13,139 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:13,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:13,153 INFO L225 Difference]: With dead ends: 10183 [2021-08-21 17:58:13,153 INFO L226 Difference]: Without dead ends: 9859 [2021-08-21 17:58:13,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 35.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:58:13,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9859 states. [2021-08-21 17:58:13,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9859 to 5471. [2021-08-21 17:58:13,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5471 states, 5470 states have (on average 2.240402193784278) internal successors, (12255), 5470 states have internal predecessors, (12255), 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 17:58:13,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5471 states to 5471 states and 12255 transitions. [2021-08-21 17:58:13,252 INFO L78 Accepts]: Start accepts. Automaton has 5471 states and 12255 transitions. Word has length 39 [2021-08-21 17:58:13,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:13,252 INFO L470 AbstractCegarLoop]: Abstraction has 5471 states and 12255 transitions. [2021-08-21 17:58:13,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 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 17:58:13,253 INFO L276 IsEmpty]: Start isEmpty. Operand 5471 states and 12255 transitions. [2021-08-21 17:58:13,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:13,260 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:13,260 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:13,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-21 17:58:13,260 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:13,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:13,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1578820728, now seen corresponding path program 15 times [2021-08-21 17:58:13,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:13,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277898822] [2021-08-21 17:58:13,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:13,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:13,318 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 17:58:13,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:13,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277898822] [2021-08-21 17:58:13,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277898822] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:13,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:13,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 17:58:13,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718904892] [2021-08-21 17:58:13,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 17:58:13,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:13,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 17:58:13,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-21 17:58:13,319 INFO L87 Difference]: Start difference. First operand 5471 states and 12255 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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 17:58:13,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:13,599 INFO L93 Difference]: Finished difference Result 9553 states and 21275 transitions. [2021-08-21 17:58:13,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 17:58:13,599 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:13,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:13,612 INFO L225 Difference]: With dead ends: 9553 [2021-08-21 17:58:13,612 INFO L226 Difference]: Without dead ends: 8925 [2021-08-21 17:58:13,613 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 65.1ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-21 17:58:13,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8925 states. [2021-08-21 17:58:13,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8925 to 5201. [2021-08-21 17:58:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 2.2348076923076925) internal successors, (11621), 5200 states have internal predecessors, (11621), 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 17:58:13,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 11621 transitions. [2021-08-21 17:58:13,700 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 11621 transitions. Word has length 39 [2021-08-21 17:58:13,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:13,700 INFO L470 AbstractCegarLoop]: Abstraction has 5201 states and 11621 transitions. [2021-08-21 17:58:13,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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 17:58:13,701 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 11621 transitions. [2021-08-21 17:58:13,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:13,706 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:13,706 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:13,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-21 17:58:13,706 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:13,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:13,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1049520996, now seen corresponding path program 16 times [2021-08-21 17:58:13,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:13,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050365248] [2021-08-21 17:58:13,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:13,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:13,749 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 17:58:13,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:13,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050365248] [2021-08-21 17:58:13,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050365248] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:13,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:13,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:58:13,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670732764] [2021-08-21 17:58:13,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:58:13,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:13,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:58:13,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:58:13,751 INFO L87 Difference]: Start difference. First operand 5201 states and 11621 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 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 17:58:13,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:13,928 INFO L93 Difference]: Finished difference Result 9227 states and 20534 transitions. [2021-08-21 17:58:13,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:58:13,928 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:13,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:13,942 INFO L225 Difference]: With dead ends: 9227 [2021-08-21 17:58:13,942 INFO L226 Difference]: Without dead ends: 9124 [2021-08-21 17:58:13,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 35.6ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:58:13,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9124 states. [2021-08-21 17:58:14,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9124 to 4832. [2021-08-21 17:58:14,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4832 states, 4831 states have (on average 2.1898157731318566) internal successors, (10579), 4831 states have internal predecessors, (10579), 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 17:58:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4832 states to 4832 states and 10579 transitions. [2021-08-21 17:58:14,019 INFO L78 Accepts]: Start accepts. Automaton has 4832 states and 10579 transitions. Word has length 39 [2021-08-21 17:58:14,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:14,019 INFO L470 AbstractCegarLoop]: Abstraction has 4832 states and 10579 transitions. [2021-08-21 17:58:14,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 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 17:58:14,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4832 states and 10579 transitions. [2021-08-21 17:58:14,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:14,024 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:14,025 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:14,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-21 17:58:14,025 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:14,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:14,025 INFO L82 PathProgramCache]: Analyzing trace with hash 210058070, now seen corresponding path program 17 times [2021-08-21 17:58:14,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:14,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168960719] [2021-08-21 17:58:14,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:14,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:14,077 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 17:58:14,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:14,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168960719] [2021-08-21 17:58:14,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168960719] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:14,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:14,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 17:58:14,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92514551] [2021-08-21 17:58:14,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 17:58:14,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:14,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 17:58:14,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-21 17:58:14,078 INFO L87 Difference]: Start difference. First operand 4832 states and 10579 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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 17:58:14,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:14,331 INFO L93 Difference]: Finished difference Result 8718 states and 19359 transitions. [2021-08-21 17:58:14,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 17:58:14,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:14,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:14,342 INFO L225 Difference]: With dead ends: 8718 [2021-08-21 17:58:14,342 INFO L226 Difference]: Without dead ends: 8538 [2021-08-21 17:58:14,342 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 59.8ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-21 17:58:14,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8538 states. [2021-08-21 17:58:14,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8538 to 4708. [2021-08-21 17:58:14,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4708 states, 4707 states have (on average 2.1939664329721693) internal successors, (10327), 4707 states have internal predecessors, (10327), 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 17:58:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4708 states to 4708 states and 10327 transitions. [2021-08-21 17:58:14,451 INFO L78 Accepts]: Start accepts. Automaton has 4708 states and 10327 transitions. Word has length 39 [2021-08-21 17:58:14,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:14,451 INFO L470 AbstractCegarLoop]: Abstraction has 4708 states and 10327 transitions. [2021-08-21 17:58:14,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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 17:58:14,451 INFO L276 IsEmpty]: Start isEmpty. Operand 4708 states and 10327 transitions. [2021-08-21 17:58:14,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:14,457 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:14,457 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:14,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-21 17:58:14,457 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:14,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:14,457 INFO L82 PathProgramCache]: Analyzing trace with hash 690380214, now seen corresponding path program 18 times [2021-08-21 17:58:14,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:14,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137781543] [2021-08-21 17:58:14,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:14,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:14,493 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 17:58:14,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:14,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137781543] [2021-08-21 17:58:14,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137781543] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:14,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:14,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:58:14,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408022176] [2021-08-21 17:58:14,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:58:14,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:14,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:58:14,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:58:14,494 INFO L87 Difference]: Start difference. First operand 4708 states and 10327 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 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 17:58:14,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:14,604 INFO L93 Difference]: Finished difference Result 7454 states and 16966 transitions. [2021-08-21 17:58:14,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 17:58:14,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:14,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:14,613 INFO L225 Difference]: With dead ends: 7454 [2021-08-21 17:58:14,613 INFO L226 Difference]: Without dead ends: 7184 [2021-08-21 17:58:14,614 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:58:14,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7184 states. [2021-08-21 17:58:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7184 to 3818. [2021-08-21 17:58:14,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3818 states, 3817 states have (on average 2.2418129421011264) internal successors, (8557), 3817 states have internal predecessors, (8557), 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 17:58:14,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 8557 transitions. [2021-08-21 17:58:14,666 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 8557 transitions. Word has length 39 [2021-08-21 17:58:14,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:14,666 INFO L470 AbstractCegarLoop]: Abstraction has 3818 states and 8557 transitions. [2021-08-21 17:58:14,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 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 17:58:14,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 8557 transitions. [2021-08-21 17:58:14,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:14,670 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:14,670 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:14,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-21 17:58:14,670 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:14,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:14,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1153991480, now seen corresponding path program 19 times [2021-08-21 17:58:14,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:14,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763240337] [2021-08-21 17:58:14,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:14,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:14,712 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 17:58:14,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:14,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763240337] [2021-08-21 17:58:14,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763240337] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:14,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:14,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:58:14,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14030097] [2021-08-21 17:58:14,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:58:14,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:14,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:58:14,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:58:14,714 INFO L87 Difference]: Start difference. First operand 3818 states and 8557 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 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 17:58:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:14,868 INFO L93 Difference]: Finished difference Result 4758 states and 10509 transitions. [2021-08-21 17:58:14,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:58:14,869 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:14,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:14,873 INFO L225 Difference]: With dead ends: 4758 [2021-08-21 17:58:14,874 INFO L226 Difference]: Without dead ends: 3583 [2021-08-21 17:58:14,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 33.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:58:14,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2021-08-21 17:58:14,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 2189. [2021-08-21 17:58:14,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2189 states, 2188 states have (on average 2.259597806215722) internal successors, (4944), 2188 states have internal predecessors, (4944), 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 17:58:14,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 4944 transitions. [2021-08-21 17:58:14,899 INFO L78 Accepts]: Start accepts. Automaton has 2189 states and 4944 transitions. Word has length 39 [2021-08-21 17:58:14,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:14,899 INFO L470 AbstractCegarLoop]: Abstraction has 2189 states and 4944 transitions. [2021-08-21 17:58:14,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 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 17:58:14,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2189 states and 4944 transitions. [2021-08-21 17:58:14,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:14,901 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:14,901 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:14,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-21 17:58:14,901 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:14,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:14,902 INFO L82 PathProgramCache]: Analyzing trace with hash 197406746, now seen corresponding path program 20 times [2021-08-21 17:58:14,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:14,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249337668] [2021-08-21 17:58:14,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:14,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:14,954 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 17:58:14,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:14,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249337668] [2021-08-21 17:58:14,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249337668] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:14,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:14,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 17:58:14,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182135485] [2021-08-21 17:58:14,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 17:58:14,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:14,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 17:58:14,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-21 17:58:14,955 INFO L87 Difference]: Start difference. First operand 2189 states and 4944 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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 17:58:15,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:15,178 INFO L93 Difference]: Finished difference Result 3425 states and 7696 transitions. [2021-08-21 17:58:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 17:58:15,179 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:15,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:15,181 INFO L225 Difference]: With dead ends: 3425 [2021-08-21 17:58:15,181 INFO L226 Difference]: Without dead ends: 2329 [2021-08-21 17:58:15,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 61.5ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-21 17:58:15,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2021-08-21 17:58:15,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 1645. [2021-08-21 17:58:15,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 2.2950121654501214) internal successors, (3773), 1644 states have internal predecessors, (3773), 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 17:58:15,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 3773 transitions. [2021-08-21 17:58:15,199 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 3773 transitions. Word has length 39 [2021-08-21 17:58:15,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:15,199 INFO L470 AbstractCegarLoop]: Abstraction has 1645 states and 3773 transitions. [2021-08-21 17:58:15,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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 17:58:15,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 3773 transitions. [2021-08-21 17:58:15,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:15,201 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:15,201 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:15,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-21 17:58:15,201 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:15,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:15,201 INFO L82 PathProgramCache]: Analyzing trace with hash 232388092, now seen corresponding path program 21 times [2021-08-21 17:58:15,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:15,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064990923] [2021-08-21 17:58:15,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:15,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:15,259 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 17:58:15,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:15,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064990923] [2021-08-21 17:58:15,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064990923] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:15,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:15,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-21 17:58:15,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447004802] [2021-08-21 17:58:15,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-21 17:58:15,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:15,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-21 17:58:15,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:58:15,261 INFO L87 Difference]: Start difference. First operand 1645 states and 3773 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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 17:58:15,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:15,441 INFO L93 Difference]: Finished difference Result 1777 states and 4027 transitions. [2021-08-21 17:58:15,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-21 17:58:15,441 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:15,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:15,443 INFO L225 Difference]: With dead ends: 1777 [2021-08-21 17:58:15,443 INFO L226 Difference]: Without dead ends: 1426 [2021-08-21 17:58:15,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 76.3ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-08-21 17:58:15,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2021-08-21 17:58:15,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1426. [2021-08-21 17:58:15,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 2.3480701754385964) internal successors, (3346), 1425 states have internal predecessors, (3346), 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 17:58:15,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 3346 transitions. [2021-08-21 17:58:15,457 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 3346 transitions. Word has length 39 [2021-08-21 17:58:15,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:15,457 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 3346 transitions. [2021-08-21 17:58:15,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 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 17:58:15,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 3346 transitions. [2021-08-21 17:58:15,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:15,458 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:15,458 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:15,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-21 17:58:15,459 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:15,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:15,459 INFO L82 PathProgramCache]: Analyzing trace with hash 2068277220, now seen corresponding path program 22 times [2021-08-21 17:58:15,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:15,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854885726] [2021-08-21 17:58:15,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:15,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:15,489 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 17:58:15,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:15,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854885726] [2021-08-21 17:58:15,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854885726] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:15,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:15,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:58:15,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182491347] [2021-08-21 17:58:15,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:58:15,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:15,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:58:15,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:58:15,491 INFO L87 Difference]: Start difference. First operand 1426 states and 3346 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 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 17:58:15,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:15,578 INFO L93 Difference]: Finished difference Result 1274 states and 2969 transitions. [2021-08-21 17:58:15,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 17:58:15,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:15,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:15,580 INFO L225 Difference]: With dead ends: 1274 [2021-08-21 17:58:15,580 INFO L226 Difference]: Without dead ends: 1238 [2021-08-21 17:58:15,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 17.8ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:58:15,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2021-08-21 17:58:15,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 902. [2021-08-21 17:58:15,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 901 states have (on average 2.297447280799112) internal successors, (2070), 901 states have internal predecessors, (2070), 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 17:58:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 2070 transitions. [2021-08-21 17:58:15,590 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 2070 transitions. Word has length 39 [2021-08-21 17:58:15,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:15,590 INFO L470 AbstractCegarLoop]: Abstraction has 902 states and 2070 transitions. [2021-08-21 17:58:15,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 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 17:58:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 2070 transitions. [2021-08-21 17:58:15,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:15,592 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:15,592 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:15,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-21 17:58:15,592 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:15,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:15,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1651981796, now seen corresponding path program 23 times [2021-08-21 17:58:15,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:15,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266424466] [2021-08-21 17:58:15,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:15,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:15,630 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 17:58:15,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:15,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266424466] [2021-08-21 17:58:15,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266424466] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:15,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:15,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:58:15,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353041215] [2021-08-21 17:58:15,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:58:15,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:15,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:58:15,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:58:15,631 INFO L87 Difference]: Start difference. First operand 902 states and 2070 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 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 17:58:15,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:15,736 INFO L93 Difference]: Finished difference Result 454 states and 843 transitions. [2021-08-21 17:58:15,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:58:15,737 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:15,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:15,737 INFO L225 Difference]: With dead ends: 454 [2021-08-21 17:58:15,737 INFO L226 Difference]: Without dead ends: 241 [2021-08-21 17:58:15,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 33.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:58:15,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-08-21 17:58:15,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 173. [2021-08-21 17:58:15,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.8837209302325582) internal successors, (324), 172 states have internal predecessors, (324), 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 17:58:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 324 transitions. [2021-08-21 17:58:15,739 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 324 transitions. Word has length 39 [2021-08-21 17:58:15,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:15,739 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 324 transitions. [2021-08-21 17:58:15,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 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 17:58:15,740 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 324 transitions. [2021-08-21 17:58:15,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-21 17:58:15,740 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:15,740 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:15,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-21 17:58:15,740 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-21 17:58:15,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:15,740 INFO L82 PathProgramCache]: Analyzing trace with hash -368153492, now seen corresponding path program 24 times [2021-08-21 17:58:15,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:15,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483083900] [2021-08-21 17:58:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:15,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:15,791 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 17:58:15,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:15,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483083900] [2021-08-21 17:58:15,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483083900] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:15,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:15,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 17:58:15,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131227678] [2021-08-21 17:58:15,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 17:58:15,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:15,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 17:58:15,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-21 17:58:15,792 INFO L87 Difference]: Start difference. First operand 173 states and 324 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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 17:58:15,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:15,878 INFO L93 Difference]: Finished difference Result 129 states and 200 transitions. [2021-08-21 17:58:15,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-21 17:58:15,879 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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 39 [2021-08-21 17:58:15,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:15,879 INFO L225 Difference]: With dead ends: 129 [2021-08-21 17:58:15,879 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 17:58:15,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 55.6ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:58:15,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 17:58:15,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 17:58:15,879 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 17:58:15,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 17:58:15,879 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-08-21 17:58:15,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:15,879 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 17:58:15,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 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 17:58:15,879 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 17:58:15,880 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 17:58:15,881 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT [2021-08-21 17:58:15,882 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 17:58:15,890 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 17:58:15,890 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 17:58:15,890 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-08-21 17:58:15,890 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATION [2021-08-21 17:58:15,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-21 17:58:15,904 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 17:58:15,904 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 17:58:15,905 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:58:15 BasicIcfg [2021-08-21 17:58:15,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 17:58:15,906 INFO L168 Benchmark]: Toolchain (without parser) took 12865.54 ms. Allocated memory was 127.9 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 107.5 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 789.7 MB. Max. memory is 8.0 GB. [2021-08-21 17:58:15,906 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 127.9 MB. Free memory is still 108.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 17:58:15,906 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.35 ms. Allocated memory is still 127.9 MB. Free memory was 107.4 MB in the beginning and 105.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:58:15,907 INFO L168 Benchmark]: Boogie Preprocessor took 15.22 ms. Allocated memory is still 127.9 MB. Free memory was 105.9 MB in the beginning and 104.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:58:15,907 INFO L168 Benchmark]: RCFGBuilder took 231.52 ms. Allocated memory is still 127.9 MB. Free memory was 104.8 MB in the beginning and 89.5 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-08-21 17:58:15,907 INFO L168 Benchmark]: TraceAbstraction took 12594.40 ms. Allocated memory was 127.9 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 89.0 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 769.8 MB. Max. memory is 8.0 GB. [2021-08-21 17:58:15,908 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 0.11 ms. Allocated memory is still 127.9 MB. Free memory is still 108.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 19.35 ms. Allocated memory is still 127.9 MB. Free memory was 107.4 MB in the beginning and 105.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 15.22 ms. Allocated memory is still 127.9 MB. Free memory was 105.9 MB in the beginning and 104.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 231.52 ms. Allocated memory is still 127.9 MB. Free memory was 104.8 MB in the beginning and 89.5 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12594.40 ms. Allocated memory was 127.9 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 89.0 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 769.8 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: 60861, positive: 56190, positive conditional: 56190, positive unconditional: 0, negative: 4671, negative conditional: 4671, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 60861, positive: 56190, positive conditional: 0, positive unconditional: 56190, negative: 4671, negative conditional: 0, negative unconditional: 4671, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 494, positive: 454, positive conditional: 0, positive unconditional: 454, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 494, positive: 419, positive conditional: 0, positive unconditional: 419, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 75, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 236, positive: 144, positive conditional: 0, positive unconditional: 144, negative: 92, negative conditional: 0, negative unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 60861, positive: 55736, positive conditional: 0, positive unconditional: 55736, negative: 4631, negative conditional: 0, negative unconditional: 4631, unknown: 494, unknown conditional: 0, unknown unconditional: 494] , Statistics on independence cache: Total cache size (in pairs): 494, Positive cache size: 454, Positive conditional cache size: 0, Positive unconditional cache size: 454, Negative cache size: 40, Negative conditional cache size: 0, Negative unconditional cache size: 40, 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: 95]: 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 11 procedures, 83 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 12509.1ms, OverallIterations: 24, TraceHistogramMax: 1, EmptinessCheckTime: 274.7ms, AutomataDifference: 6178.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1284.4ms, PartialOrderReductionTime: 1273.6ms, HoareTripleCheckerStatistics: 1289 SDtfs, 2556 SDslu, 5401 SDs, 0 SdLazy, 6935 SolverSat, 1271 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3008.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 318 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1357.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12444occurred in iteration=0, InterpolantAutomatonStates: 263, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3135.8ms AutomataMinimizationTime, 24 MinimizatonAttempts, 79408 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.2ms SsaConstructionTime, 110.8ms SatisfiabilityAnalysisTime, 1271.1ms InterpolantComputationTime, 936 NumberOfCodeBlocks, 936 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 912 ConstructedInterpolants, 0 QuantifiedInterpolants, 2505 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 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 17:58:15,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...