/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-6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 17:58:09,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 17:58:09,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 17:58:10,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-21 17:58:10,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-21 17:58:10,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-21 17:58:10,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-21 17:58:10,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-21 17:58:10,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-21 17:58:10,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-21 17:58:10,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-21 17:58:10,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-08-21 17:58:10,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-21 17:58:10,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-21 17:58:10,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-21 17:58:10,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-21 17:58:10,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-21 17:58:10,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-21 17:58:10,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-21 17:58:10,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-21 17:58:10,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 17:58:10,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 17:58:10,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 17:58:10,056 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 17:58:10,076 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 17:58:10,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 17:58:10,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 17:58:10,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 17:58:10,078 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 17:58:10,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 17:58:10,078 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 17:58:10,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 17:58:10,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 17:58:10,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 17:58:10,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 17:58:10,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 17:58:10,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 17:58:10,080 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 17:58:10,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 17:58:10,080 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 17:58:10,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 17:58:10,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 17:58:10,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 17:58:10,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 17:58:10,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 17:58:10,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:58:10,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 17:58:10,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 17:58:10,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 17:58:10,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 17:58:10,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 17:58:10,082 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 17:58:10,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 17:58:10,083 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 17:58:10,083 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 17:58:10,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 17:58:10,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 17:58:10,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 17:58:10,426 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 17:58:10,427 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 17:58:10,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl [2021-08-21 17:58:10,428 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl' [2021-08-21 17:58:10,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 17:58:10,471 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 17:58:10,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 17:58:10,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 17:58:10,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 17:58:10,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:10" (1/1) ... [2021-08-21 17:58:10,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:10" (1/1) ... [2021-08-21 17:58:10,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 17:58:10,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 17:58:10,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 17:58:10,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 17:58:10,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:10" (1/1) ... [2021-08-21 17:58:10,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:10" (1/1) ... [2021-08-21 17:58:10,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:10" (1/1) ... [2021-08-21 17:58:10,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:10" (1/1) ... [2021-08-21 17:58:10,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:10" (1/1) ... [2021-08-21 17:58:10,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:10" (1/1) ... [2021-08-21 17:58:10,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:10" (1/1) ... [2021-08-21 17:58:10,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 17:58:10,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 17:58:10,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 17:58:10,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 17:58:10,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:10" (1/1) ... [2021-08-21 17:58:10,519 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:58:10,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:58:10,538 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 17:58:10,545 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 17:58:10,576 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-21 17:58:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-21 17:58:10,577 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-21 17:58:10,577 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-21 17:58:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-21 17:58:10,577 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-21 17:58:10,577 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 17:58:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 17:58:10,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 17:58:10,578 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-21 17:58:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-21 17:58:10,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-21 17:58:10,578 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-21 17:58:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-21 17:58:10,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-21 17:58:10,580 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-08-21 17:58:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-08-21 17:58:10,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-08-21 17:58:10,581 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-08-21 17:58:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-08-21 17:58:10,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-08-21 17:58:10,582 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 17:58:10,840 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 17:58:10,840 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-21 17:58:10,842 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:58:10 BoogieIcfgContainer [2021-08-21 17:58:10,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 17:58:10,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 17:58:10,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 17:58:10,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 17:58:10,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 05:58:10" (1/2) ... [2021-08-21 17:58:10,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc25376 and model type ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:58:10, skipping insertion in model container [2021-08-21 17:58:10,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:58:10" (2/2) ... [2021-08-21 17:58:10,849 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-6.wvr.bpl [2021-08-21 17:58:10,865 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 17:58:10,865 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 17:58:10,865 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 17:58:10,866 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 17:58:10,928 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-08-21 17:58:10,980 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 17:58:10,985 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 17:58:10,986 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-21 17:58:17,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 74652 states, 57286 states have (on average 3.317773976189645) internal successors, (190062), 74651 states have internal predecessors, (190062), 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 17:58:17,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 17:58:17,575 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:17,576 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:17,576 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 17:58:17,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:17,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1815472100, now seen corresponding path program 1 times [2021-08-21 17:58:17,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:17,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919797311] [2021-08-21 17:58:17,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:17,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:18,046 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 17:58:18,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:18,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919797311] [2021-08-21 17:58:18,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919797311] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:18,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:18,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-21 17:58:18,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867125753] [2021-08-21 17:58:18,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:58:18,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:18,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:58:18,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:58:18,199 INFO L87 Difference]: Start difference. First operand has 74652 states, 57286 states have (on average 3.317773976189645) internal successors, (190062), 74651 states have internal predecessors, (190062), 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 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 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 17:58:20,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:20,206 INFO L93 Difference]: Finished difference Result 179851 states and 464392 transitions. [2021-08-21 17:58:20,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 17:58:20,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 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 46 [2021-08-21 17:58:20,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:20,904 INFO L225 Difference]: With dead ends: 179851 [2021-08-21 17:58:20,904 INFO L226 Difference]: Without dead ends: 76237 [2021-08-21 17:58:20,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.7ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:58:21,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76237 states. [2021-08-21 17:58:23,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76237 to 36491. [2021-08-21 17:58:23,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36491 states, 36490 states have (on average 3.607563716086599) internal successors, (131640), 36490 states have internal predecessors, (131640), 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 17:58:24,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36491 states to 36491 states and 131640 transitions. [2021-08-21 17:58:24,286 INFO L78 Accepts]: Start accepts. Automaton has 36491 states and 131640 transitions. Word has length 46 [2021-08-21 17:58:24,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:24,289 INFO L470 AbstractCegarLoop]: Abstraction has 36491 states and 131640 transitions. [2021-08-21 17:58:24,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 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 17:58:24,290 INFO L276 IsEmpty]: Start isEmpty. Operand 36491 states and 131640 transitions. [2021-08-21 17:58:24,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 17:58:24,455 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:24,455 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:24,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 17:58:24,456 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 17:58:24,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:24,459 INFO L82 PathProgramCache]: Analyzing trace with hash 521168352, now seen corresponding path program 2 times [2021-08-21 17:58:24,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:24,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516822240] [2021-08-21 17:58:24,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:24,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:24,607 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 17:58:24,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:24,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516822240] [2021-08-21 17:58:24,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516822240] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:24,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:24,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:58:24,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334941726] [2021-08-21 17:58:24,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 17:58:24,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:24,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 17:58:24,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-21 17:58:24,614 INFO L87 Difference]: Start difference. First operand 36491 states and 131640 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 17:58:26,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:26,134 INFO L93 Difference]: Finished difference Result 110934 states and 381289 transitions. [2021-08-21 17:58:26,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-21 17:58:26,135 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 46 [2021-08-21 17:58:26,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:26,992 INFO L225 Difference]: With dead ends: 110934 [2021-08-21 17:58:26,992 INFO L226 Difference]: Without dead ends: 110934 [2021-08-21 17:58:26,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:58:27,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110934 states. [2021-08-21 17:58:29,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110934 to 52692. [2021-08-21 17:58:29,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52692 states, 52691 states have (on average 3.471560608073485) internal successors, (182920), 52691 states have internal predecessors, (182920), 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 17:58:29,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52692 states to 52692 states and 182920 transitions. [2021-08-21 17:58:29,734 INFO L78 Accepts]: Start accepts. Automaton has 52692 states and 182920 transitions. Word has length 46 [2021-08-21 17:58:29,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:29,735 INFO L470 AbstractCegarLoop]: Abstraction has 52692 states and 182920 transitions. [2021-08-21 17:58:29,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 17:58:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 52692 states and 182920 transitions. [2021-08-21 17:58:29,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 17:58:29,898 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:29,899 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:29,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 17:58:29,900 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 17:58:29,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:29,901 INFO L82 PathProgramCache]: Analyzing trace with hash 632260064, now seen corresponding path program 3 times [2021-08-21 17:58:29,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:29,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18392616] [2021-08-21 17:58:29,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:29,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:30,064 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 17:58:30,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:30,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18392616] [2021-08-21 17:58:30,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18392616] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:30,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:30,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-21 17:58:30,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077817206] [2021-08-21 17:58:30,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:58:30,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:30,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:58:30,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:58:30,071 INFO L87 Difference]: Start difference. First operand 52692 states and 182920 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 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 17:58:31,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:31,046 INFO L93 Difference]: Finished difference Result 82651 states and 288984 transitions. [2021-08-21 17:58:31,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 17:58:31,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 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 46 [2021-08-21 17:58:31,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:31,490 INFO L225 Difference]: With dead ends: 82651 [2021-08-21 17:58:31,490 INFO L226 Difference]: Without dead ends: 56875 [2021-08-21 17:58:31,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.5ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:58:31,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56875 states. [2021-08-21 17:58:32,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56875 to 55735. [2021-08-21 17:58:33,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55735 states, 55734 states have (on average 3.4310654178777766) internal successors, (191227), 55734 states have internal predecessors, (191227), 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 17:58:33,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55735 states to 55735 states and 191227 transitions. [2021-08-21 17:58:33,220 INFO L78 Accepts]: Start accepts. Automaton has 55735 states and 191227 transitions. Word has length 46 [2021-08-21 17:58:33,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:33,220 INFO L470 AbstractCegarLoop]: Abstraction has 55735 states and 191227 transitions. [2021-08-21 17:58:33,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 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 17:58:33,220 INFO L276 IsEmpty]: Start isEmpty. Operand 55735 states and 191227 transitions. [2021-08-21 17:58:33,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 17:58:33,370 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:33,370 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:33,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 17:58:33,370 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 17:58:33,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:33,371 INFO L82 PathProgramCache]: Analyzing trace with hash 732034430, now seen corresponding path program 4 times [2021-08-21 17:58:33,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:33,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240280075] [2021-08-21 17:58:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:33,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:33,440 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 17:58:33,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:33,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240280075] [2021-08-21 17:58:33,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240280075] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:33,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:33,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:58:33,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444819323] [2021-08-21 17:58:33,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:58:33,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:33,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:58:33,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:58:33,442 INFO L87 Difference]: Start difference. First operand 55735 states and 191227 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 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 17:58:34,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:34,846 INFO L93 Difference]: Finished difference Result 107238 states and 350506 transitions. [2021-08-21 17:58:34,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 17:58:34,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 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 46 [2021-08-21 17:58:34,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:35,346 INFO L225 Difference]: With dead ends: 107238 [2021-08-21 17:58:35,346 INFO L226 Difference]: Without dead ends: 106546 [2021-08-21 17:58:35,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 80.2ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-08-21 17:58:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106546 states. [2021-08-21 17:58:37,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106546 to 61897. [2021-08-21 17:58:37,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61897 states, 61896 states have (on average 3.3264831329972857) internal successors, (205896), 61896 states have internal predecessors, (205896), 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 17:58:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61897 states to 61897 states and 205896 transitions. [2021-08-21 17:58:37,824 INFO L78 Accepts]: Start accepts. Automaton has 61897 states and 205896 transitions. Word has length 46 [2021-08-21 17:58:37,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:37,824 INFO L470 AbstractCegarLoop]: Abstraction has 61897 states and 205896 transitions. [2021-08-21 17:58:37,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 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 17:58:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand 61897 states and 205896 transitions. [2021-08-21 17:58:38,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 17:58:38,397 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:38,397 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:38,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 17:58:38,397 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 17:58:38,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:38,398 INFO L82 PathProgramCache]: Analyzing trace with hash 455411232, now seen corresponding path program 5 times [2021-08-21 17:58:38,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:38,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702962344] [2021-08-21 17:58:38,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:38,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:38,505 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 17:58:38,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:38,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702962344] [2021-08-21 17:58:38,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702962344] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:38,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:38,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:58:38,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565537515] [2021-08-21 17:58:38,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 17:58:38,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:38,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 17:58:38,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-21 17:58:38,507 INFO L87 Difference]: Start difference. First operand 61897 states and 205896 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 17:58:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:39,884 INFO L93 Difference]: Finished difference Result 134802 states and 434362 transitions. [2021-08-21 17:58:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-21 17:58:39,885 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 46 [2021-08-21 17:58:39,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:40,840 INFO L225 Difference]: With dead ends: 134802 [2021-08-21 17:58:40,841 INFO L226 Difference]: Without dead ends: 130652 [2021-08-21 17:58:40,841 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 98.8ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:58:41,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130652 states. [2021-08-21 17:58:43,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130652 to 65003. [2021-08-21 17:58:43,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65003 states, 65002 states have (on average 3.288421894710932) internal successors, (213754), 65002 states have internal predecessors, (213754), 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 17:58:43,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65003 states to 65003 states and 213754 transitions. [2021-08-21 17:58:43,463 INFO L78 Accepts]: Start accepts. Automaton has 65003 states and 213754 transitions. Word has length 46 [2021-08-21 17:58:43,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:43,463 INFO L470 AbstractCegarLoop]: Abstraction has 65003 states and 213754 transitions. [2021-08-21 17:58:43,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 17:58:43,464 INFO L276 IsEmpty]: Start isEmpty. Operand 65003 states and 213754 transitions. [2021-08-21 17:58:43,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 17:58:43,606 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:43,607 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:43,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 17:58:43,607 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 17:58:43,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:43,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1226988724, now seen corresponding path program 6 times [2021-08-21 17:58:43,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:43,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748744945] [2021-08-21 17:58:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:43,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:43,678 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 17:58:43,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:43,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748744945] [2021-08-21 17:58:43,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748744945] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:43,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:43,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:58:43,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000356987] [2021-08-21 17:58:43,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:58:43,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:43,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:58:43,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:58:43,684 INFO L87 Difference]: Start difference. First operand 65003 states and 213754 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 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 17:58:45,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:45,055 INFO L93 Difference]: Finished difference Result 122835 states and 384888 transitions. [2021-08-21 17:58:45,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 17:58:45,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 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 46 [2021-08-21 17:58:45,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:45,595 INFO L225 Difference]: With dead ends: 122835 [2021-08-21 17:58:45,595 INFO L226 Difference]: Without dead ends: 122663 [2021-08-21 17:58:45,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 36.8ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-08-21 17:58:45,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122663 states. [2021-08-21 17:58:47,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122663 to 72294. [2021-08-21 17:58:47,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72294 states, 72293 states have (on average 3.1979998063436295) internal successors, (231193), 72293 states have internal predecessors, (231193), 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 17:58:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72294 states to 72294 states and 231193 transitions. [2021-08-21 17:58:48,230 INFO L78 Accepts]: Start accepts. Automaton has 72294 states and 231193 transitions. Word has length 46 [2021-08-21 17:58:48,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:48,230 INFO L470 AbstractCegarLoop]: Abstraction has 72294 states and 231193 transitions. [2021-08-21 17:58:48,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 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 17:58:48,230 INFO L276 IsEmpty]: Start isEmpty. Operand 72294 states and 231193 transitions. [2021-08-21 17:58:48,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 17:58:48,383 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:48,383 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:48,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 17:58:48,383 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 17:58:48,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:48,384 INFO L82 PathProgramCache]: Analyzing trace with hash 973441794, now seen corresponding path program 7 times [2021-08-21 17:58:48,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:48,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880436936] [2021-08-21 17:58:48,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:48,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:48,465 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 17:58:48,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:48,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880436936] [2021-08-21 17:58:48,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880436936] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:48,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:48,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:58:48,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518216578] [2021-08-21 17:58:48,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 17:58:48,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:48,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 17:58:48,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-21 17:58:48,467 INFO L87 Difference]: Start difference. First operand 72294 states and 231193 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 17:58:50,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:50,076 INFO L93 Difference]: Finished difference Result 149524 states and 465786 transitions. [2021-08-21 17:58:50,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-21 17:58:50,076 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 46 [2021-08-21 17:58:50,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:50,979 INFO L225 Difference]: With dead ends: 149524 [2021-08-21 17:58:50,979 INFO L226 Difference]: Without dead ends: 148304 [2021-08-21 17:58:50,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 450.9ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:58:51,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148304 states. [2021-08-21 17:58:53,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148304 to 78358. [2021-08-21 17:58:53,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78358 states, 78357 states have (on average 3.1656393174828032) internal successors, (248050), 78357 states have internal predecessors, (248050), 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 17:58:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78358 states to 78358 states and 248050 transitions. [2021-08-21 17:58:54,171 INFO L78 Accepts]: Start accepts. Automaton has 78358 states and 248050 transitions. Word has length 46 [2021-08-21 17:58:54,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:58:54,173 INFO L470 AbstractCegarLoop]: Abstraction has 78358 states and 248050 transitions. [2021-08-21 17:58:54,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 17:58:54,173 INFO L276 IsEmpty]: Start isEmpty. Operand 78358 states and 248050 transitions. [2021-08-21 17:58:54,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 17:58:54,451 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:58:54,451 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:58:54,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 17:58:54,451 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 17:58:54,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:58:54,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1668034304, now seen corresponding path program 8 times [2021-08-21 17:58:54,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:58:54,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721135717] [2021-08-21 17:58:54,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:58:54,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:58:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:58:54,623 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 17:58:54,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:58:54,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721135717] [2021-08-21 17:58:54,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721135717] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:58:54,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:58:54,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 17:58:54,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276109586] [2021-08-21 17:58:54,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 17:58:54,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:58:54,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 17:58:54,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-21 17:58:54,625 INFO L87 Difference]: Start difference. First operand 78358 states and 248050 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 17:58:56,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:58:56,711 INFO L93 Difference]: Finished difference Result 144725 states and 452001 transitions. [2021-08-21 17:58:56,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 17:58:56,712 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 46 [2021-08-21 17:58:56,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:58:57,808 INFO L225 Difference]: With dead ends: 144725 [2021-08-21 17:58:57,809 INFO L226 Difference]: Without dead ends: 144169 [2021-08-21 17:58:57,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 104.8ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-08-21 17:58:58,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144169 states. [2021-08-21 17:59:00,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144169 to 76976. [2021-08-21 17:59:00,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76976 states, 76975 states have (on average 3.1607664826242288) internal successors, (243300), 76975 states have internal predecessors, (243300), 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 17:59:01,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76976 states to 76976 states and 243300 transitions. [2021-08-21 17:59:01,136 INFO L78 Accepts]: Start accepts. Automaton has 76976 states and 243300 transitions. Word has length 46 [2021-08-21 17:59:01,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:59:01,136 INFO L470 AbstractCegarLoop]: Abstraction has 76976 states and 243300 transitions. [2021-08-21 17:59:01,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 17:59:01,136 INFO L276 IsEmpty]: Start isEmpty. Operand 76976 states and 243300 transitions. [2021-08-21 17:59:01,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 17:59:01,319 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:59:01,319 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:59:01,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 17:59:01,319 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 17:59:01,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:59:01,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1262854370, now seen corresponding path program 9 times [2021-08-21 17:59:01,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:59:01,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760320334] [2021-08-21 17:59:01,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:59:01,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:59:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:59:01,438 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 17:59:01,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:59:01,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760320334] [2021-08-21 17:59:01,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760320334] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:59:01,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:59:01,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-21 17:59:01,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769849586] [2021-08-21 17:59:01,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-21 17:59:01,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:59:01,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-21 17:59:01,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:59:01,440 INFO L87 Difference]: Start difference. First operand 76976 states and 243300 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 17:59:03,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:59:03,354 INFO L93 Difference]: Finished difference Result 147525 states and 459236 transitions. [2021-08-21 17:59:03,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 17:59:03,355 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 46 [2021-08-21 17:59:03,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:59:03,971 INFO L225 Difference]: With dead ends: 147525 [2021-08-21 17:59:03,971 INFO L226 Difference]: Without dead ends: 146789 [2021-08-21 17:59:03,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 125.4ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-08-21 17:59:04,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146789 states. [2021-08-21 17:59:06,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146789 to 81089. [2021-08-21 17:59:06,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81089 states, 81088 states have (on average 3.1384915153906867) internal successors, (254494), 81088 states have internal predecessors, (254494), 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 17:59:07,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81089 states to 81089 states and 254494 transitions. [2021-08-21 17:59:07,299 INFO L78 Accepts]: Start accepts. Automaton has 81089 states and 254494 transitions. Word has length 46 [2021-08-21 17:59:07,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:59:07,300 INFO L470 AbstractCegarLoop]: Abstraction has 81089 states and 254494 transitions. [2021-08-21 17:59:07,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 17:59:07,300 INFO L276 IsEmpty]: Start isEmpty. Operand 81089 states and 254494 transitions. [2021-08-21 17:59:07,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 17:59:07,488 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:59:07,488 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:59:07,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-21 17:59:07,488 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 17:59:07,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:59:07,489 INFO L82 PathProgramCache]: Analyzing trace with hash -623557344, now seen corresponding path program 10 times [2021-08-21 17:59:07,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:59:07,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933080475] [2021-08-21 17:59:07,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:59:07,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:59:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:59:07,590 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 17:59:07,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:59:07,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933080475] [2021-08-21 17:59:07,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933080475] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:59:07,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:59:07,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 17:59:07,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219841926] [2021-08-21 17:59:07,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 17:59:07,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:59:07,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 17:59:07,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-21 17:59:07,592 INFO L87 Difference]: Start difference. First operand 81089 states and 254494 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 17:59:09,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:59:09,318 INFO L93 Difference]: Finished difference Result 152811 states and 467116 transitions. [2021-08-21 17:59:09,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 17:59:09,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 46 [2021-08-21 17:59:09,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:59:09,927 INFO L225 Difference]: With dead ends: 152811 [2021-08-21 17:59:09,928 INFO L226 Difference]: Without dead ends: 149833 [2021-08-21 17:59:09,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 79.0ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-08-21 17:59:10,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149833 states. [2021-08-21 17:59:12,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149833 to 79617. [2021-08-21 17:59:12,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79617 states, 79616 states have (on average 3.129056973472669) internal successors, (249123), 79616 states have internal predecessors, (249123), 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 17:59:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79617 states to 79617 states and 249123 transitions. [2021-08-21 17:59:13,216 INFO L78 Accepts]: Start accepts. Automaton has 79617 states and 249123 transitions. Word has length 46 [2021-08-21 17:59:13,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:59:13,217 INFO L470 AbstractCegarLoop]: Abstraction has 79617 states and 249123 transitions. [2021-08-21 17:59:13,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 17:59:13,218 INFO L276 IsEmpty]: Start isEmpty. Operand 79617 states and 249123 transitions. [2021-08-21 17:59:13,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 17:59:13,398 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:59:13,398 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:59:13,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-21 17:59:13,399 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 17:59:13,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:59:13,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1017655614, now seen corresponding path program 11 times [2021-08-21 17:59:13,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:59:13,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562564228] [2021-08-21 17:59:13,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:59:13,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:59:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:59:13,479 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 17:59:13,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:59:13,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562564228] [2021-08-21 17:59:13,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562564228] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:59:13,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:59:13,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-21 17:59:13,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736247849] [2021-08-21 17:59:13,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-21 17:59:13,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:59:13,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-21 17:59:13,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:59:13,480 INFO L87 Difference]: Start difference. First operand 79617 states and 249123 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 17:59:15,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:59:15,278 INFO L93 Difference]: Finished difference Result 154429 states and 469106 transitions. [2021-08-21 17:59:15,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 17:59:15,279 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 46 [2021-08-21 17:59:15,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:59:15,889 INFO L225 Difference]: With dead ends: 154429 [2021-08-21 17:59:15,890 INFO L226 Difference]: Without dead ends: 150158 [2021-08-21 17:59:15,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 116.9ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-08-21 17:59:16,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150158 states. [2021-08-21 17:59:18,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150158 to 79870. [2021-08-21 17:59:18,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79870 states, 79869 states have (on average 3.11828118544116) internal successors, (249054), 79869 states have internal predecessors, (249054), 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 17:59:19,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79870 states to 79870 states and 249054 transitions. [2021-08-21 17:59:19,037 INFO L78 Accepts]: Start accepts. Automaton has 79870 states and 249054 transitions. Word has length 46 [2021-08-21 17:59:19,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:59:19,037 INFO L470 AbstractCegarLoop]: Abstraction has 79870 states and 249054 transitions. [2021-08-21 17:59:19,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 17:59:19,037 INFO L276 IsEmpty]: Start isEmpty. Operand 79870 states and 249054 transitions. [2021-08-21 17:59:19,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 17:59:19,217 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:59:19,217 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:59:19,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-21 17:59:19,218 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 17:59:19,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:59:19,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1225966402, now seen corresponding path program 12 times [2021-08-21 17:59:19,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:59:19,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476070554] [2021-08-21 17:59:19,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:59:19,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:59:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:59:19,294 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 17:59:19,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:59:19,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476070554] [2021-08-21 17:59:19,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476070554] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:59:19,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:59:19,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 17:59:19,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274334013] [2021-08-21 17:59:19,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 17:59:19,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:59:19,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 17:59:19,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-21 17:59:19,296 INFO L87 Difference]: Start difference. First operand 79870 states and 249054 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 17:59:21,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:59:21,420 INFO L93 Difference]: Finished difference Result 154983 states and 475200 transitions. [2021-08-21 17:59:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 17:59:21,445 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 46 [2021-08-21 17:59:21,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:59:22,572 INFO L225 Difference]: With dead ends: 154983 [2021-08-21 17:59:22,572 INFO L226 Difference]: Without dead ends: 154215 [2021-08-21 17:59:22,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 73.4ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-08-21 17:59:22,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154215 states. [2021-08-21 17:59:25,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154215 to 78092. [2021-08-21 17:59:25,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78092 states, 78091 states have (on average 3.112778681282094) internal successors, (243080), 78091 states have internal predecessors, (243080), 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 17:59:26,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78092 states to 78092 states and 243080 transitions. [2021-08-21 17:59:26,013 INFO L78 Accepts]: Start accepts. Automaton has 78092 states and 243080 transitions. Word has length 46 [2021-08-21 17:59:26,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:59:26,013 INFO L470 AbstractCegarLoop]: Abstraction has 78092 states and 243080 transitions. [2021-08-21 17:59:26,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 17:59:26,013 INFO L276 IsEmpty]: Start isEmpty. Operand 78092 states and 243080 transitions. [2021-08-21 17:59:26,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 17:59:26,246 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:59:26,246 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:59:26,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-21 17:59:26,247 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 17:59:26,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:59:26,247 INFO L82 PathProgramCache]: Analyzing trace with hash -276140512, now seen corresponding path program 13 times [2021-08-21 17:59:26,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:59:26,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196949368] [2021-08-21 17:59:26,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:59:26,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:59:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:59:26,333 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 17:59:26,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:59:26,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196949368] [2021-08-21 17:59:26,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196949368] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:59:26,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:59:26,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-21 17:59:26,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313837822] [2021-08-21 17:59:26,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-21 17:59:26,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:59:26,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-21 17:59:26,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:59:26,335 INFO L87 Difference]: Start difference. First operand 78092 states and 243080 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 17:59:28,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:59:28,200 INFO L93 Difference]: Finished difference Result 156927 states and 479942 transitions. [2021-08-21 17:59:28,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 17:59:28,200 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 46 [2021-08-21 17:59:28,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:59:28,839 INFO L225 Difference]: With dead ends: 156927 [2021-08-21 17:59:28,840 INFO L226 Difference]: Without dead ends: 155764 [2021-08-21 17:59:28,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 114.4ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-08-21 17:59:29,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155764 states. [2021-08-21 17:59:31,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155764 to 80656. [2021-08-21 17:59:31,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80656 states, 80655 states have (on average 3.108114809993181) internal successors, (250685), 80655 states have internal predecessors, (250685), 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 17:59:32,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80656 states to 80656 states and 250685 transitions. [2021-08-21 17:59:32,247 INFO L78 Accepts]: Start accepts. Automaton has 80656 states and 250685 transitions. Word has length 46 [2021-08-21 17:59:32,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:59:32,248 INFO L470 AbstractCegarLoop]: Abstraction has 80656 states and 250685 transitions. [2021-08-21 17:59:32,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 17:59:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 80656 states and 250685 transitions. [2021-08-21 17:59:32,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 17:59:32,434 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:59:32,434 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:59:32,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-21 17:59:32,435 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 17:59:32,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:59:32,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1947370086, now seen corresponding path program 14 times [2021-08-21 17:59:32,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:59:32,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641801371] [2021-08-21 17:59:32,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:59:32,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:59:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:59:32,491 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 17:59:32,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:59:32,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641801371] [2021-08-21 17:59:32,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641801371] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:59:32,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:59:32,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:59:32,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898006704] [2021-08-21 17:59:32,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:59:32,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:59:32,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:59:32,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:59:32,493 INFO L87 Difference]: Start difference. First operand 80656 states and 250685 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 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 17:59:33,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:59:33,991 INFO L93 Difference]: Finished difference Result 165417 states and 504444 transitions. [2021-08-21 17:59:34,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 17:59:34,005 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 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 46 [2021-08-21 17:59:34,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:59:34,696 INFO L225 Difference]: With dead ends: 165417 [2021-08-21 17:59:34,697 INFO L226 Difference]: Without dead ends: 165417 [2021-08-21 17:59:34,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 23.9ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:59:34,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165417 states. [2021-08-21 17:59:37,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165417 to 79912. [2021-08-21 17:59:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79912 states, 79911 states have (on average 3.089086608852348) internal successors, (246852), 79911 states have internal predecessors, (246852), 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 17:59:38,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79912 states to 79912 states and 246852 transitions. [2021-08-21 17:59:38,083 INFO L78 Accepts]: Start accepts. Automaton has 79912 states and 246852 transitions. Word has length 46 [2021-08-21 17:59:38,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:59:38,084 INFO L470 AbstractCegarLoop]: Abstraction has 79912 states and 246852 transitions. [2021-08-21 17:59:38,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 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 17:59:38,084 INFO L276 IsEmpty]: Start isEmpty. Operand 79912 states and 246852 transitions. [2021-08-21 17:59:38,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 17:59:38,289 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:59:38,289 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:59:38,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-21 17:59:38,289 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 17:59:38,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:59:38,289 INFO L82 PathProgramCache]: Analyzing trace with hash 389270366, now seen corresponding path program 15 times [2021-08-21 17:59:38,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:59:38,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212271710] [2021-08-21 17:59:38,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:59:38,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:59:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:59:38,366 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 17:59:38,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:59:38,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212271710] [2021-08-21 17:59:38,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212271710] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:59:38,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:59:38,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 17:59:38,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650957868] [2021-08-21 17:59:38,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 17:59:38,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:59:38,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 17:59:38,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-21 17:59:38,368 INFO L87 Difference]: Start difference. First operand 79912 states and 246852 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 17:59:40,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:59:40,184 INFO L93 Difference]: Finished difference Result 173347 states and 522080 transitions. [2021-08-21 17:59:40,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 17:59:40,185 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 46 [2021-08-21 17:59:40,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:59:40,900 INFO L225 Difference]: With dead ends: 173347 [2021-08-21 17:59:40,900 INFO L226 Difference]: Without dead ends: 173123 [2021-08-21 17:59:40,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 75.6ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-21 17:59:41,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173123 states. [2021-08-21 17:59:43,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173123 to 79075. [2021-08-21 17:59:43,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79075 states, 79074 states have (on average 3.069782735159471) internal successors, (242740), 79074 states have internal predecessors, (242740), 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 17:59:44,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79075 states to 79075 states and 242740 transitions. [2021-08-21 17:59:44,412 INFO L78 Accepts]: Start accepts. Automaton has 79075 states and 242740 transitions. Word has length 46 [2021-08-21 17:59:44,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:59:44,413 INFO L470 AbstractCegarLoop]: Abstraction has 79075 states and 242740 transitions. [2021-08-21 17:59:44,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 17:59:44,413 INFO L276 IsEmpty]: Start isEmpty. Operand 79075 states and 242740 transitions. [2021-08-21 17:59:44,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 17:59:44,594 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:59:44,594 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:59:44,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-21 17:59:44,594 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 17:59:44,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:59:44,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1624468260, now seen corresponding path program 16 times [2021-08-21 17:59:44,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:59:44,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808751899] [2021-08-21 17:59:44,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:59:44,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:59:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:59:44,656 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 17:59:44,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:59:44,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808751899] [2021-08-21 17:59:44,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808751899] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:59:44,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:59:44,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:59:44,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948848648] [2021-08-21 17:59:44,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:59:44,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:59:44,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:59:44,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:59:44,661 INFO L87 Difference]: Start difference. First operand 79075 states and 242740 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 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 17:59:46,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:59:46,255 INFO L93 Difference]: Finished difference Result 168892 states and 500363 transitions. [2021-08-21 17:59:46,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:59:46,256 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 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 46 [2021-08-21 17:59:46,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:59:46,939 INFO L225 Difference]: With dead ends: 168892 [2021-08-21 17:59:46,940 INFO L226 Difference]: Without dead ends: 167956 [2021-08-21 17:59:46,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:59:47,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167956 states. [2021-08-21 17:59:49,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167956 to 77500. [2021-08-21 17:59:49,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77500 states, 77499 states have (on average 3.038981148143847) internal successors, (235518), 77499 states have internal predecessors, (235518), 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 17:59:50,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77500 states to 77500 states and 235518 transitions. [2021-08-21 17:59:50,400 INFO L78 Accepts]: Start accepts. Automaton has 77500 states and 235518 transitions. Word has length 46 [2021-08-21 17:59:50,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:59:50,400 INFO L470 AbstractCegarLoop]: Abstraction has 77500 states and 235518 transitions. [2021-08-21 17:59:50,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 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 17:59:50,400 INFO L276 IsEmpty]: Start isEmpty. Operand 77500 states and 235518 transitions. [2021-08-21 17:59:50,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 17:59:50,662 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:59:50,662 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:59:50,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-21 17:59:50,663 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 17:59:50,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:59:50,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1901091458, now seen corresponding path program 17 times [2021-08-21 17:59:50,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:59:50,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068000490] [2021-08-21 17:59:50,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:59:50,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:59:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:59:50,755 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 17:59:50,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:59:50,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068000490] [2021-08-21 17:59:50,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068000490] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:59:50,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:59:50,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 17:59:50,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994244726] [2021-08-21 17:59:50,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 17:59:50,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:59:50,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 17:59:50,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-21 17:59:50,758 INFO L87 Difference]: Start difference. First operand 77500 states and 235518 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 17:59:52,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:59:52,616 INFO L93 Difference]: Finished difference Result 163656 states and 482961 transitions. [2021-08-21 17:59:52,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 17:59:52,641 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 46 [2021-08-21 17:59:52,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:59:53,751 INFO L225 Difference]: With dead ends: 163656 [2021-08-21 17:59:53,752 INFO L226 Difference]: Without dead ends: 160270 [2021-08-21 17:59:53,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-21 17:59:54,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160270 states. [2021-08-21 17:59:56,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160270 to 75558. [2021-08-21 17:59:56,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75558 states, 75557 states have (on average 3.0353772648464075) internal successors, (229344), 75557 states have internal predecessors, (229344), 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 17:59:56,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75558 states to 75558 states and 229344 transitions. [2021-08-21 17:59:56,799 INFO L78 Accepts]: Start accepts. Automaton has 75558 states and 229344 transitions. Word has length 46 [2021-08-21 17:59:56,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:59:56,799 INFO L470 AbstractCegarLoop]: Abstraction has 75558 states and 229344 transitions. [2021-08-21 17:59:56,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 17:59:56,799 INFO L276 IsEmpty]: Start isEmpty. Operand 75558 states and 229344 transitions. [2021-08-21 17:59:57,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 17:59:57,392 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:59:57,392 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 17:59:57,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-21 17:59:57,393 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 17:59:57,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:59:57,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1129513966, now seen corresponding path program 18 times [2021-08-21 17:59:57,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:59:57,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67548332] [2021-08-21 17:59:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:59:57,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:59:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:59:57,449 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 17:59:57,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:59:57,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67548332] [2021-08-21 17:59:57,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67548332] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:59:57,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:59:57,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:59:57,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151709928] [2021-08-21 17:59:57,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:59:57,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:59:57,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:59:57,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:59:57,451 INFO L87 Difference]: Start difference. First operand 75558 states and 229344 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 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 17:59:58,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:59:58,689 INFO L93 Difference]: Finished difference Result 170124 states and 506628 transitions. [2021-08-21 17:59:58,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:59:58,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 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 46 [2021-08-21 17:59:58,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:59:59,656 INFO L225 Difference]: With dead ends: 170124 [2021-08-21 17:59:59,656 INFO L226 Difference]: Without dead ends: 169900 [2021-08-21 17:59:59,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 39.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:59:59,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169900 states. [2021-08-21 18:00:02,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169900 to 75416. [2021-08-21 18:00:02,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75416 states, 75415 states have (on average 3.028919976132069) internal successors, (228426), 75415 states have internal predecessors, (228426), 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 18:00:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75416 states to 75416 states and 228426 transitions. [2021-08-21 18:00:02,651 INFO L78 Accepts]: Start accepts. Automaton has 75416 states and 228426 transitions. Word has length 46 [2021-08-21 18:00:02,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:00:02,651 INFO L470 AbstractCegarLoop]: Abstraction has 75416 states and 228426 transitions. [2021-08-21 18:00:02,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 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 18:00:02,651 INFO L276 IsEmpty]: Start isEmpty. Operand 75416 states and 228426 transitions. [2021-08-21 18:00:03,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:00:03,204 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:00:03,204 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:00:03,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-21 18:00:03,204 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:00:03,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:00:03,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1383060896, now seen corresponding path program 19 times [2021-08-21 18:00:03,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:00:03,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955200841] [2021-08-21 18:00:03,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:00:03,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:00:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:00:03,289 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 18:00:03,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:00:03,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955200841] [2021-08-21 18:00:03,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955200841] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:00:03,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:00:03,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 18:00:03,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372188456] [2021-08-21 18:00:03,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 18:00:03,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:00:03,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 18:00:03,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-21 18:00:03,292 INFO L87 Difference]: Start difference. First operand 75416 states and 228426 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 18:00:04,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:00:04,689 INFO L93 Difference]: Finished difference Result 163513 states and 487326 transitions. [2021-08-21 18:00:04,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 18:00:04,690 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 46 [2021-08-21 18:00:04,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:00:05,762 INFO L225 Difference]: With dead ends: 163513 [2021-08-21 18:00:05,762 INFO L226 Difference]: Without dead ends: 162630 [2021-08-21 18:00:05,762 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 79.0ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-21 18:00:06,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162630 states. [2021-08-21 18:00:08,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162630 to 73667. [2021-08-21 18:00:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73667 states, 73666 states have (on average 3.0383487633372246) internal successors, (223823), 73666 states have internal predecessors, (223823), 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 18:00:08,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73667 states to 73667 states and 223823 transitions. [2021-08-21 18:00:08,713 INFO L78 Accepts]: Start accepts. Automaton has 73667 states and 223823 transitions. Word has length 46 [2021-08-21 18:00:08,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:00:08,713 INFO L470 AbstractCegarLoop]: Abstraction has 73667 states and 223823 transitions. [2021-08-21 18:00:08,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 18:00:08,713 INFO L276 IsEmpty]: Start isEmpty. Operand 73667 states and 223823 transitions. [2021-08-21 18:00:08,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:00:08,872 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:00:08,872 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:00:08,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-21 18:00:08,872 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:00:08,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:00:08,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1335369374, now seen corresponding path program 20 times [2021-08-21 18:00:08,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:00:08,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702947868] [2021-08-21 18:00:08,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:00:08,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:00:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:00:08,901 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 18:00:08,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:00:08,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702947868] [2021-08-21 18:00:08,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702947868] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:00:08,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:00:08,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-21 18:00:08,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186315929] [2021-08-21 18:00:08,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-21 18:00:08,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:00:08,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-21 18:00:08,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-21 18:00:08,903 INFO L87 Difference]: Start difference. First operand 73667 states and 223823 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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 18:00:09,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:00:09,641 INFO L93 Difference]: Finished difference Result 63257 states and 189169 transitions. [2021-08-21 18:00:09,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 18:00:09,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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 46 [2021-08-21 18:00:09,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:00:09,861 INFO L225 Difference]: With dead ends: 63257 [2021-08-21 18:00:09,862 INFO L226 Difference]: Without dead ends: 63257 [2021-08-21 18:00:09,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-21 18:00:09,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63257 states. [2021-08-21 18:00:11,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63257 to 63065. [2021-08-21 18:00:11,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63065 states, 63064 states have (on average 2.9965907649372068) internal successors, (188977), 63064 states have internal predecessors, (188977), 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 18:00:11,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63065 states to 63065 states and 188977 transitions. [2021-08-21 18:00:11,520 INFO L78 Accepts]: Start accepts. Automaton has 63065 states and 188977 transitions. Word has length 46 [2021-08-21 18:00:11,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:00:11,520 INFO L470 AbstractCegarLoop]: Abstraction has 63065 states and 188977 transitions. [2021-08-21 18:00:11,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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 18:00:11,520 INFO L276 IsEmpty]: Start isEmpty. Operand 63065 states and 188977 transitions. [2021-08-21 18:00:12,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:00:12,009 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:00:12,009 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:00:12,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-21 18:00:12,009 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:00:12,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:00:12,009 INFO L82 PathProgramCache]: Analyzing trace with hash 674172928, now seen corresponding path program 21 times [2021-08-21 18:00:12,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:00:12,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580382403] [2021-08-21 18:00:12,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:00:12,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:00:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:00:12,191 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 18:00:12,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:00:12,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580382403] [2021-08-21 18:00:12,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580382403] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:00:12,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:00:12,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-21 18:00:12,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424615563] [2021-08-21 18:00:12,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-21 18:00:12,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:00:12,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-21 18:00:12,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-21 18:00:12,194 INFO L87 Difference]: Start difference. First operand 63065 states and 188977 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 18:00:13,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:00:13,567 INFO L93 Difference]: Finished difference Result 123735 states and 362144 transitions. [2021-08-21 18:00:13,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 18:00:13,568 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 46 [2021-08-21 18:00:13,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:00:14,029 INFO L225 Difference]: With dead ends: 123735 [2021-08-21 18:00:14,029 INFO L226 Difference]: Without dead ends: 123371 [2021-08-21 18:00:14,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 142.2ms TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-08-21 18:00:14,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123371 states. [2021-08-21 18:00:16,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123371 to 63013. [2021-08-21 18:00:16,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63013 states, 63012 states have (on average 2.9941122325906178) internal successors, (188665), 63012 states have internal predecessors, (188665), 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 18:00:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63013 states to 63013 states and 188665 transitions. [2021-08-21 18:00:16,823 INFO L78 Accepts]: Start accepts. Automaton has 63013 states and 188665 transitions. Word has length 46 [2021-08-21 18:00:16,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:00:16,823 INFO L470 AbstractCegarLoop]: Abstraction has 63013 states and 188665 transitions. [2021-08-21 18:00:16,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 18:00:16,823 INFO L276 IsEmpty]: Start isEmpty. Operand 63013 states and 188665 transitions. [2021-08-21 18:00:17,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:00:17,002 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:00:17,002 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:00:17,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-21 18:00:17,002 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:00:17,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:00:17,002 INFO L82 PathProgramCache]: Analyzing trace with hash 2038251550, now seen corresponding path program 22 times [2021-08-21 18:00:17,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:00:17,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907494944] [2021-08-21 18:00:17,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:00:17,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:00:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:00:17,180 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 18:00:17,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:00:17,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907494944] [2021-08-21 18:00:17,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907494944] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:00:17,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:00:17,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-21 18:00:17,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405497803] [2021-08-21 18:00:17,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-21 18:00:17,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:00:17,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-21 18:00:17,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-21 18:00:17,181 INFO L87 Difference]: Start difference. First operand 63013 states and 188665 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:00:19,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:00:19,096 INFO L93 Difference]: Finished difference Result 119129 states and 349458 transitions. [2021-08-21 18:00:19,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-21 18:00:19,098 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 46 [2021-08-21 18:00:19,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:00:19,576 INFO L225 Difference]: With dead ends: 119129 [2021-08-21 18:00:19,577 INFO L226 Difference]: Without dead ends: 118399 [2021-08-21 18:00:19,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 179.7ms TimeCoverageRelationStatistics Valid=157, Invalid=305, Unknown=0, NotChecked=0, Total=462 [2021-08-21 18:00:19,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118399 states. [2021-08-21 18:00:21,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118399 to 62435. [2021-08-21 18:00:21,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62435 states, 62434 states have (on average 2.988900278694301) internal successors, (186609), 62434 states have internal predecessors, (186609), 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 18:00:22,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62435 states to 62435 states and 186609 transitions. [2021-08-21 18:00:22,090 INFO L78 Accepts]: Start accepts. Automaton has 62435 states and 186609 transitions. Word has length 46 [2021-08-21 18:00:22,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:00:22,090 INFO L470 AbstractCegarLoop]: Abstraction has 62435 states and 186609 transitions. [2021-08-21 18:00:22,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:00:22,091 INFO L276 IsEmpty]: Start isEmpty. Operand 62435 states and 186609 transitions. [2021-08-21 18:00:22,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:00:22,228 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:00:22,228 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:00:22,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-21 18:00:22,228 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:00:22,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:00:22,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1406072734, now seen corresponding path program 23 times [2021-08-21 18:00:22,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:00:22,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642708474] [2021-08-21 18:00:22,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:00:22,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:00:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:00:22,334 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 18:00:22,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:00:22,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642708474] [2021-08-21 18:00:22,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642708474] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:00:22,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:00:22,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-21 18:00:22,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079450803] [2021-08-21 18:00:22,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-21 18:00:22,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:00:22,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-21 18:00:22,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-08-21 18:00:22,337 INFO L87 Difference]: Start difference. First operand 62435 states and 186609 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 18:00:23,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:00:23,793 INFO L93 Difference]: Finished difference Result 119611 states and 350057 transitions. [2021-08-21 18:00:23,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-21 18:00:23,793 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 46 [2021-08-21 18:00:23,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:00:24,505 INFO L225 Difference]: With dead ends: 119611 [2021-08-21 18:00:24,505 INFO L226 Difference]: Without dead ends: 118753 [2021-08-21 18:00:24,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 177.0ms TimeCoverageRelationStatistics Valid=253, Invalid=503, Unknown=0, NotChecked=0, Total=756 [2021-08-21 18:00:24,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118753 states. [2021-08-21 18:00:26,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118753 to 63289. [2021-08-21 18:00:26,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63289 states, 63288 states have (on average 2.98290355201618) internal successors, (188782), 63288 states have internal predecessors, (188782), 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 18:00:26,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63289 states to 63289 states and 188782 transitions. [2021-08-21 18:00:26,551 INFO L78 Accepts]: Start accepts. Automaton has 63289 states and 188782 transitions. Word has length 46 [2021-08-21 18:00:26,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:00:26,551 INFO L470 AbstractCegarLoop]: Abstraction has 63289 states and 188782 transitions. [2021-08-21 18:00:26,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 18:00:26,552 INFO L276 IsEmpty]: Start isEmpty. Operand 63289 states and 188782 transitions. [2021-08-21 18:00:27,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:00:27,041 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:00:27,041 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:00:27,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-21 18:00:27,042 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:00:27,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:00:27,042 INFO L82 PathProgramCache]: Analyzing trace with hash -401236448, now seen corresponding path program 24 times [2021-08-21 18:00:27,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:00:27,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962847970] [2021-08-21 18:00:27,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:00:27,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:00:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:00:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 18:00:27,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:00:27,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962847970] [2021-08-21 18:00:27,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962847970] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:00:27,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:00:27,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-21 18:00:27,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999792475] [2021-08-21 18:00:27,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-21 18:00:27,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:00:27,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-21 18:00:27,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-21 18:00:27,178 INFO L87 Difference]: Start difference. First operand 63289 states and 188782 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 18:00:28,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:00:28,594 INFO L93 Difference]: Finished difference Result 125338 states and 361402 transitions. [2021-08-21 18:00:28,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 18:00:28,595 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 46 [2021-08-21 18:00:28,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:00:29,016 INFO L225 Difference]: With dead ends: 125338 [2021-08-21 18:00:29,017 INFO L226 Difference]: Without dead ends: 123362 [2021-08-21 18:00:29,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 140.1ms TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-08-21 18:00:29,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123362 states. [2021-08-21 18:00:31,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123362 to 63631. [2021-08-21 18:00:31,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63631 states, 63630 states have (on average 2.979082193933679) internal successors, (189559), 63630 states have internal predecessors, (189559), 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 18:00:31,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63631 states to 63631 states and 189559 transitions. [2021-08-21 18:00:31,486 INFO L78 Accepts]: Start accepts. Automaton has 63631 states and 189559 transitions. Word has length 46 [2021-08-21 18:00:31,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:00:31,486 INFO L470 AbstractCegarLoop]: Abstraction has 63631 states and 189559 transitions. [2021-08-21 18:00:31,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 18:00:31,487 INFO L276 IsEmpty]: Start isEmpty. Operand 63631 states and 189559 transitions. [2021-08-21 18:00:31,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:00:31,618 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:00:31,618 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:00:31,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-21 18:00:31,618 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:00:31,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:00:31,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1239976510, now seen corresponding path program 25 times [2021-08-21 18:00:31,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:00:31,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075056904] [2021-08-21 18:00:31,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:00:31,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:00:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:00:31,719 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 18:00:31,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:00:31,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075056904] [2021-08-21 18:00:31,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075056904] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:00:31,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:00:31,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-21 18:00:31,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648750842] [2021-08-21 18:00:31,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-21 18:00:31,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:00:31,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-21 18:00:31,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-21 18:00:31,721 INFO L87 Difference]: Start difference. First operand 63631 states and 189559 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:00:33,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:00:33,380 INFO L93 Difference]: Finished difference Result 122752 states and 354024 transitions. [2021-08-21 18:00:33,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-21 18:00:33,381 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 46 [2021-08-21 18:00:33,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:00:33,840 INFO L225 Difference]: With dead ends: 122752 [2021-08-21 18:00:33,841 INFO L226 Difference]: Without dead ends: 118856 [2021-08-21 18:00:33,841 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 137.9ms TimeCoverageRelationStatistics Valid=157, Invalid=305, Unknown=0, NotChecked=0, Total=462 [2021-08-21 18:00:34,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118856 states. [2021-08-21 18:00:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118856 to 63073. [2021-08-21 18:00:35,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63073 states, 63072 states have (on average 2.9773274987316083) internal successors, (187786), 63072 states have internal predecessors, (187786), 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 18:00:36,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63073 states to 63073 states and 187786 transitions. [2021-08-21 18:00:36,423 INFO L78 Accepts]: Start accepts. Automaton has 63073 states and 187786 transitions. Word has length 46 [2021-08-21 18:00:36,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:00:36,423 INFO L470 AbstractCegarLoop]: Abstraction has 63073 states and 187786 transitions. [2021-08-21 18:00:36,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:00:36,424 INFO L276 IsEmpty]: Start isEmpty. Operand 63073 states and 187786 transitions. [2021-08-21 18:00:36,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:00:36,559 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:00:36,559 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:00:36,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-21 18:00:36,560 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:00:36,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:00:36,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1371096642, now seen corresponding path program 26 times [2021-08-21 18:00:36,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:00:36,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649473806] [2021-08-21 18:00:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:00:36,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:00:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:00:36,654 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 18:00:36,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:00:36,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649473806] [2021-08-21 18:00:36,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649473806] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:00:36,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:00:36,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-21 18:00:36,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196275643] [2021-08-21 18:00:36,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-21 18:00:36,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:00:36,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-21 18:00:36,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-08-21 18:00:36,656 INFO L87 Difference]: Start difference. First operand 63073 states and 187786 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 18:00:38,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:00:38,094 INFO L93 Difference]: Finished difference Result 122436 states and 352968 transitions. [2021-08-21 18:00:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-21 18:00:38,094 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 46 [2021-08-21 18:00:38,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:00:38,785 INFO L225 Difference]: With dead ends: 122436 [2021-08-21 18:00:38,785 INFO L226 Difference]: Without dead ends: 117985 [2021-08-21 18:00:38,785 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 176.4ms TimeCoverageRelationStatistics Valid=253, Invalid=503, Unknown=0, NotChecked=0, Total=756 [2021-08-21 18:00:38,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117985 states. [2021-08-21 18:00:40,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117985 to 62570. [2021-08-21 18:00:40,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62570 states, 62569 states have (on average 2.9792868672985025) internal successors, (186411), 62569 states have internal predecessors, (186411), 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 18:00:40,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62570 states to 62570 states and 186411 transitions. [2021-08-21 18:00:40,857 INFO L78 Accepts]: Start accepts. Automaton has 62570 states and 186411 transitions. Word has length 46 [2021-08-21 18:00:40,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:00:40,857 INFO L470 AbstractCegarLoop]: Abstraction has 62570 states and 186411 transitions. [2021-08-21 18:00:40,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 18:00:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand 62570 states and 186411 transitions. [2021-08-21 18:00:40,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:00:40,996 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:00:40,996 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:00:40,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-21 18:00:40,996 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:00:40,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:00:40,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1008017090, now seen corresponding path program 27 times [2021-08-21 18:00:40,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:00:40,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239570924] [2021-08-21 18:00:40,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:00:40,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:00:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:00:41,080 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 18:00:41,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:00:41,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239570924] [2021-08-21 18:00:41,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239570924] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:00:41,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:00:41,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-21 18:00:41,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198199883] [2021-08-21 18:00:41,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-21 18:00:41,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:00:41,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-21 18:00:41,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-21 18:00:41,081 INFO L87 Difference]: Start difference. First operand 62570 states and 186411 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 18:00:43,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:00:43,096 INFO L93 Difference]: Finished difference Result 124180 states and 362101 transitions. [2021-08-21 18:00:43,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 18:00:43,097 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 46 [2021-08-21 18:00:43,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:00:43,608 INFO L225 Difference]: With dead ends: 124180 [2021-08-21 18:00:43,608 INFO L226 Difference]: Without dead ends: 123816 [2021-08-21 18:00:43,608 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 125.2ms TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-08-21 18:00:43,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123816 states. [2021-08-21 18:00:45,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123816 to 62518. [2021-08-21 18:00:46,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62518 states, 62517 states have (on average 2.976774317385671) internal successors, (186099), 62517 states have internal predecessors, (186099), 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 18:00:46,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62518 states to 62518 states and 186099 transitions. [2021-08-21 18:00:46,355 INFO L78 Accepts]: Start accepts. Automaton has 62518 states and 186099 transitions. Word has length 46 [2021-08-21 18:00:46,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:00:46,356 INFO L470 AbstractCegarLoop]: Abstraction has 62518 states and 186099 transitions. [2021-08-21 18:00:46,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 18:00:46,356 INFO L276 IsEmpty]: Start isEmpty. Operand 62518 states and 186099 transitions. [2021-08-21 18:00:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:00:46,530 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:00:46,530 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:00:46,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-21 18:00:46,530 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:00:46,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:00:46,531 INFO L82 PathProgramCache]: Analyzing trace with hash -494089824, now seen corresponding path program 28 times [2021-08-21 18:00:46,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:00:46,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103653379] [2021-08-21 18:00:46,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:00:46,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:00:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:00:46,670 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 18:00:46,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:00:46,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103653379] [2021-08-21 18:00:46,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103653379] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:00:46,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:00:46,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-21 18:00:46,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260174978] [2021-08-21 18:00:46,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-21 18:00:46,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:00:46,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-21 18:00:46,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-21 18:00:46,672 INFO L87 Difference]: Start difference. First operand 62518 states and 186099 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:00:48,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:00:48,908 INFO L93 Difference]: Finished difference Result 119092 states and 348226 transitions. [2021-08-21 18:00:48,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-21 18:00:48,917 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 46 [2021-08-21 18:00:48,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:00:49,467 INFO L225 Difference]: With dead ends: 119092 [2021-08-21 18:00:49,467 INFO L226 Difference]: Without dead ends: 118362 [2021-08-21 18:00:49,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 711.9ms TimeCoverageRelationStatistics Valid=157, Invalid=305, Unknown=0, NotChecked=0, Total=462 [2021-08-21 18:00:49,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118362 states. [2021-08-21 18:00:51,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118362 to 61940. [2021-08-21 18:00:51,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61940 states, 61939 states have (on average 2.9713589176447797) internal successors, (184043), 61939 states have internal predecessors, (184043), 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 18:00:51,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61940 states to 61940 states and 184043 transitions. [2021-08-21 18:00:51,954 INFO L78 Accepts]: Start accepts. Automaton has 61940 states and 184043 transitions. Word has length 46 [2021-08-21 18:00:51,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:00:51,954 INFO L470 AbstractCegarLoop]: Abstraction has 61940 states and 184043 transitions. [2021-08-21 18:00:51,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:00:51,955 INFO L276 IsEmpty]: Start isEmpty. Operand 61940 states and 184043 transitions. [2021-08-21 18:00:52,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:00:52,102 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:00:52,103 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:00:52,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-21 18:00:52,103 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:00:52,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:00:52,103 INFO L82 PathProgramCache]: Analyzing trace with hash -939366752, now seen corresponding path program 29 times [2021-08-21 18:00:52,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:00:52,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792123617] [2021-08-21 18:00:52,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:00:52,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:00:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:00:52,198 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 18:00:52,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:00:52,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792123617] [2021-08-21 18:00:52,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792123617] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:00:52,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:00:52,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-21 18:00:52,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450047276] [2021-08-21 18:00:52,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-21 18:00:52,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:00:52,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-21 18:00:52,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-08-21 18:00:52,200 INFO L87 Difference]: Start difference. First operand 61940 states and 184043 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 18:00:53,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:00:53,762 INFO L93 Difference]: Finished difference Result 118458 states and 346498 transitions. [2021-08-21 18:00:53,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-21 18:00:53,763 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 46 [2021-08-21 18:00:53,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:00:54,482 INFO L225 Difference]: With dead ends: 118458 [2021-08-21 18:00:54,483 INFO L226 Difference]: Without dead ends: 117513 [2021-08-21 18:00:54,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 185.1ms TimeCoverageRelationStatistics Valid=253, Invalid=503, Unknown=0, NotChecked=0, Total=756 [2021-08-21 18:00:54,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117513 states. [2021-08-21 18:00:56,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117513 to 62089. [2021-08-21 18:00:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62089 states, 62088 states have (on average 2.9738113645148823) internal successors, (184638), 62088 states have internal predecessors, (184638), 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 18:00:56,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62089 states to 62089 states and 184638 transitions. [2021-08-21 18:00:56,521 INFO L78 Accepts]: Start accepts. Automaton has 62089 states and 184638 transitions. Word has length 46 [2021-08-21 18:00:56,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:00:56,521 INFO L470 AbstractCegarLoop]: Abstraction has 62089 states and 184638 transitions. [2021-08-21 18:00:56,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 18:00:56,521 INFO L276 IsEmpty]: Start isEmpty. Operand 62089 states and 184638 transitions. [2021-08-21 18:00:56,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:00:56,663 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:00:56,663 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:00:56,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-21 18:00:56,664 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:00:56,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:00:56,664 INFO L82 PathProgramCache]: Analyzing trace with hash 485124596, now seen corresponding path program 30 times [2021-08-21 18:00:56,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:00:56,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580862949] [2021-08-21 18:00:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:00:56,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:00:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:00:56,725 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 18:00:56,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:00:56,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580862949] [2021-08-21 18:00:56,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580862949] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:00:56,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:00:56,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 18:00:56,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661193755] [2021-08-21 18:00:56,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 18:00:56,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:00:56,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 18:00:56,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-21 18:00:56,727 INFO L87 Difference]: Start difference. First operand 62089 states and 184638 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 18:00:58,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:00:58,411 INFO L93 Difference]: Finished difference Result 155782 states and 460792 transitions. [2021-08-21 18:00:58,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 18:00:58,411 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 46 [2021-08-21 18:00:58,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:00:58,989 INFO L225 Difference]: With dead ends: 155782 [2021-08-21 18:00:58,989 INFO L226 Difference]: Without dead ends: 150682 [2021-08-21 18:00:58,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 77.7ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-08-21 18:00:59,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150682 states. [2021-08-21 18:01:01,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150682 to 86044. [2021-08-21 18:01:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86044 states, 86043 states have (on average 2.9741175923666074) internal successors, (255902), 86043 states have internal predecessors, (255902), 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 18:01:02,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86044 states to 86044 states and 255902 transitions. [2021-08-21 18:01:02,230 INFO L78 Accepts]: Start accepts. Automaton has 86044 states and 255902 transitions. Word has length 46 [2021-08-21 18:01:02,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:01:02,230 INFO L470 AbstractCegarLoop]: Abstraction has 86044 states and 255902 transitions. [2021-08-21 18:01:02,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 18:01:02,231 INFO L276 IsEmpty]: Start isEmpty. Operand 86044 states and 255902 transitions. [2021-08-21 18:01:02,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:01:02,409 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:01:02,409 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:01:02,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-21 18:01:02,409 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:01:02,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:01:02,409 INFO L82 PathProgramCache]: Analyzing trace with hash -635564684, now seen corresponding path program 31 times [2021-08-21 18:01:02,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:01:02,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332609983] [2021-08-21 18:01:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:01:02,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:01:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:01:02,475 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 18:01:02,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:01:02,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332609983] [2021-08-21 18:01:02,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332609983] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:01:02,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:01:02,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-21 18:01:02,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050515163] [2021-08-21 18:01:02,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-21 18:01:02,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:01:02,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-21 18:01:02,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-21 18:01:02,477 INFO L87 Difference]: Start difference. First operand 86044 states and 255902 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 18:01:04,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:01:04,317 INFO L93 Difference]: Finished difference Result 168320 states and 503748 transitions. [2021-08-21 18:01:04,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 18:01:04,318 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 46 [2021-08-21 18:01:04,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:01:05,262 INFO L225 Difference]: With dead ends: 168320 [2021-08-21 18:01:05,262 INFO L226 Difference]: Without dead ends: 165276 [2021-08-21 18:01:05,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 111.8ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-08-21 18:01:05,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165276 states. [2021-08-21 18:01:07,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165276 to 83616. [2021-08-21 18:01:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83616 states, 83615 states have (on average 2.979931830413203) internal successors, (249167), 83615 states have internal predecessors, (249167), 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 18:01:08,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83616 states to 83616 states and 249167 transitions. [2021-08-21 18:01:08,204 INFO L78 Accepts]: Start accepts. Automaton has 83616 states and 249167 transitions. Word has length 46 [2021-08-21 18:01:08,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:01:08,204 INFO L470 AbstractCegarLoop]: Abstraction has 83616 states and 249167 transitions. [2021-08-21 18:01:08,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 18:01:08,204 INFO L276 IsEmpty]: Start isEmpty. Operand 83616 states and 249167 transitions. [2021-08-21 18:01:08,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:01:08,764 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:01:08,764 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:01:08,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-21 18:01:08,764 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:01:08,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:01:08,765 INFO L82 PathProgramCache]: Analyzing trace with hash 2105770808, now seen corresponding path program 32 times [2021-08-21 18:01:08,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:01:08,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663683357] [2021-08-21 18:01:08,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:01:08,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:01:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:01:08,893 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 18:01:08,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:01:08,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663683357] [2021-08-21 18:01:08,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663683357] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:01:08,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:01:08,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 18:01:08,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807798007] [2021-08-21 18:01:08,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 18:01:08,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:01:08,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 18:01:08,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-08-21 18:01:08,895 INFO L87 Difference]: Start difference. First operand 83616 states and 249167 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 18:01:10,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:01:10,109 INFO L93 Difference]: Finished difference Result 157639 states and 469498 transitions. [2021-08-21 18:01:10,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 18:01:10,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 46 [2021-08-21 18:01:10,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:01:10,694 INFO L225 Difference]: With dead ends: 157639 [2021-08-21 18:01:10,694 INFO L226 Difference]: Without dead ends: 156978 [2021-08-21 18:01:10,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 88.0ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-08-21 18:01:11,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156978 states. [2021-08-21 18:01:13,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156978 to 82971. [2021-08-21 18:01:13,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82971 states, 82970 states have (on average 2.9879353983367483) internal successors, (247909), 82970 states have internal predecessors, (247909), 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 18:01:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82971 states to 82971 states and 247909 transitions. [2021-08-21 18:01:14,281 INFO L78 Accepts]: Start accepts. Automaton has 82971 states and 247909 transitions. Word has length 46 [2021-08-21 18:01:14,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:01:14,282 INFO L470 AbstractCegarLoop]: Abstraction has 82971 states and 247909 transitions. [2021-08-21 18:01:14,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 18:01:14,282 INFO L276 IsEmpty]: Start isEmpty. Operand 82971 states and 247909 transitions. [2021-08-21 18:01:14,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:01:14,501 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:01:14,501 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:01:14,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-21 18:01:14,502 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:01:14,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:01:14,502 INFO L82 PathProgramCache]: Analyzing trace with hash 219045052, now seen corresponding path program 33 times [2021-08-21 18:01:14,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:01:14,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517527998] [2021-08-21 18:01:14,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:01:14,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:01:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:01:14,652 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 18:01:14,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:01:14,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517527998] [2021-08-21 18:01:14,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517527998] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:01:14,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:01:14,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-21 18:01:14,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793139276] [2021-08-21 18:01:14,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-21 18:01:14,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:01:14,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-21 18:01:14,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-21 18:01:14,654 INFO L87 Difference]: Start difference. First operand 82971 states and 247909 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:01:16,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:01:16,589 INFO L93 Difference]: Finished difference Result 136947 states and 406413 transitions. [2021-08-21 18:01:16,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-21 18:01:16,590 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 46 [2021-08-21 18:01:16,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:01:17,508 INFO L225 Difference]: With dead ends: 136947 [2021-08-21 18:01:17,509 INFO L226 Difference]: Without dead ends: 134871 [2021-08-21 18:01:17,510 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 146.2ms TimeCoverageRelationStatistics Valid=157, Invalid=305, Unknown=0, NotChecked=0, Total=462 [2021-08-21 18:01:17,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134871 states. [2021-08-21 18:01:19,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134871 to 79719. [2021-08-21 18:01:20,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79719 states, 79718 states have (on average 2.989437768132668) internal successors, (238312), 79718 states have internal predecessors, (238312), 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 18:01:20,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79719 states to 79719 states and 238312 transitions. [2021-08-21 18:01:20,310 INFO L78 Accepts]: Start accepts. Automaton has 79719 states and 238312 transitions. Word has length 46 [2021-08-21 18:01:20,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:01:20,310 INFO L470 AbstractCegarLoop]: Abstraction has 79719 states and 238312 transitions. [2021-08-21 18:01:20,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:01:20,311 INFO L276 IsEmpty]: Start isEmpty. Operand 79719 states and 238312 transitions. [2021-08-21 18:01:20,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:01:20,488 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:01:20,488 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:01:20,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-21 18:01:20,488 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:01:20,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:01:20,488 INFO L82 PathProgramCache]: Analyzing trace with hash -786937540, now seen corresponding path program 34 times [2021-08-21 18:01:20,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:01:20,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420673114] [2021-08-21 18:01:20,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:01:20,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:01:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:01:20,580 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 18:01:20,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:01:20,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420673114] [2021-08-21 18:01:20,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420673114] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:01:20,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:01:20,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-21 18:01:20,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754683816] [2021-08-21 18:01:20,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-21 18:01:20,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:01:20,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-21 18:01:20,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-08-21 18:01:20,582 INFO L87 Difference]: Start difference. First operand 79719 states and 238312 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 18:01:22,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:01:22,487 INFO L93 Difference]: Finished difference Result 131533 states and 390706 transitions. [2021-08-21 18:01:22,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-21 18:01:22,488 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 46 [2021-08-21 18:01:22,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:01:22,937 INFO L225 Difference]: With dead ends: 131533 [2021-08-21 18:01:22,937 INFO L226 Difference]: Without dead ends: 130175 [2021-08-21 18:01:22,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 211.3ms TimeCoverageRelationStatistics Valid=253, Invalid=503, Unknown=0, NotChecked=0, Total=756 [2021-08-21 18:01:23,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130175 states. [2021-08-21 18:01:25,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130175 to 77629. [2021-08-21 18:01:25,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77629 states, 77628 states have (on average 2.9969340959447623) internal successors, (232646), 77628 states have internal predecessors, (232646), 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 18:01:25,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77629 states to 77629 states and 232646 transitions. [2021-08-21 18:01:25,844 INFO L78 Accepts]: Start accepts. Automaton has 77629 states and 232646 transitions. Word has length 46 [2021-08-21 18:01:25,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:01:25,845 INFO L470 AbstractCegarLoop]: Abstraction has 77629 states and 232646 transitions. [2021-08-21 18:01:25,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 18:01:25,845 INFO L276 IsEmpty]: Start isEmpty. Operand 77629 states and 232646 transitions. [2021-08-21 18:01:26,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:01:26,030 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:01:26,030 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:01:26,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-21 18:01:26,030 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:01:26,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:01:26,031 INFO L82 PathProgramCache]: Analyzing trace with hash -381728612, now seen corresponding path program 35 times [2021-08-21 18:01:26,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:01:26,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668440672] [2021-08-21 18:01:26,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:01:26,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:01:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:01:26,065 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 18:01:26,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:01:26,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668440672] [2021-08-21 18:01:26,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668440672] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:01:26,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:01:26,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-21 18:01:26,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104006710] [2021-08-21 18:01:26,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 18:01:26,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:01:26,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 18:01:26,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-21 18:01:26,066 INFO L87 Difference]: Start difference. First operand 77629 states and 232646 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 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 18:01:27,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:01:27,212 INFO L93 Difference]: Finished difference Result 157101 states and 471254 transitions. [2021-08-21 18:01:27,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 18:01:27,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 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 46 [2021-08-21 18:01:27,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:01:28,141 INFO L225 Difference]: With dead ends: 157101 [2021-08-21 18:01:28,141 INFO L226 Difference]: Without dead ends: 156603 [2021-08-21 18:01:28,141 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-21 18:01:28,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156603 states. [2021-08-21 18:01:30,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156603 to 83768. [2021-08-21 18:01:30,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83768 states, 83767 states have (on average 2.9703582556376618) internal successors, (248818), 83767 states have internal predecessors, (248818), 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 18:01:31,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83768 states to 83768 states and 248818 transitions. [2021-08-21 18:01:31,077 INFO L78 Accepts]: Start accepts. Automaton has 83768 states and 248818 transitions. Word has length 46 [2021-08-21 18:01:31,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:01:31,077 INFO L470 AbstractCegarLoop]: Abstraction has 83768 states and 248818 transitions. [2021-08-21 18:01:31,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 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 18:01:31,077 INFO L276 IsEmpty]: Start isEmpty. Operand 83768 states and 248818 transitions. [2021-08-21 18:01:31,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:01:31,259 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:01:31,259 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:01:31,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-21 18:01:31,259 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:01:31,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:01:31,259 INFO L82 PathProgramCache]: Analyzing trace with hash -871848292, now seen corresponding path program 36 times [2021-08-21 18:01:31,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:01:31,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200670578] [2021-08-21 18:01:31,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:01:31,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:01:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:01:31,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 18:01:31,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:01:31,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200670578] [2021-08-21 18:01:31,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200670578] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:01:31,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:01:31,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-21 18:01:31,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242434553] [2021-08-21 18:01:31,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-21 18:01:31,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:01:31,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-21 18:01:31,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-21 18:01:31,344 INFO L87 Difference]: Start difference. First operand 83768 states and 248818 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:01:33,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:01:33,058 INFO L93 Difference]: Finished difference Result 163955 states and 488114 transitions. [2021-08-21 18:01:33,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-21 18:01:33,059 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 46 [2021-08-21 18:01:33,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:01:33,678 INFO L225 Difference]: With dead ends: 163955 [2021-08-21 18:01:33,678 INFO L226 Difference]: Without dead ends: 163035 [2021-08-21 18:01:33,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 111.3ms TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-08-21 18:01:34,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163035 states. [2021-08-21 18:01:36,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163035 to 83106. [2021-08-21 18:01:36,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83106 states, 83105 states have (on average 2.965248781661753) internal successors, (246427), 83105 states have internal predecessors, (246427), 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 18:01:36,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83106 states to 83106 states and 246427 transitions. [2021-08-21 18:01:36,931 INFO L78 Accepts]: Start accepts. Automaton has 83106 states and 246427 transitions. Word has length 46 [2021-08-21 18:01:36,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:01:36,931 INFO L470 AbstractCegarLoop]: Abstraction has 83106 states and 246427 transitions. [2021-08-21 18:01:36,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:01:36,931 INFO L276 IsEmpty]: Start isEmpty. Operand 83106 states and 246427 transitions. [2021-08-21 18:01:37,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:01:37,114 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:01:37,114 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:01:37,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-21 18:01:37,114 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:01:37,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:01:37,115 INFO L82 PathProgramCache]: Analyzing trace with hash 264925372, now seen corresponding path program 37 times [2021-08-21 18:01:37,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:01:37,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923485591] [2021-08-21 18:01:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:01:37,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:01:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:01:37,191 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 18:01:37,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:01:37,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923485591] [2021-08-21 18:01:37,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923485591] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:01:37,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:01:37,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-21 18:01:37,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828577985] [2021-08-21 18:01:37,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-21 18:01:37,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:01:37,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-21 18:01:37,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-21 18:01:37,193 INFO L87 Difference]: Start difference. First operand 83106 states and 246427 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:01:38,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:01:38,983 INFO L93 Difference]: Finished difference Result 160685 states and 475942 transitions. [2021-08-21 18:01:38,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-21 18:01:38,983 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 46 [2021-08-21 18:01:38,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:01:40,267 INFO L225 Difference]: With dead ends: 160685 [2021-08-21 18:01:40,268 INFO L226 Difference]: Without dead ends: 155937 [2021-08-21 18:01:40,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 112.4ms TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-08-21 18:01:40,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155937 states. [2021-08-21 18:01:43,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155937 to 81892. [2021-08-21 18:01:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81892 states, 81891 states have (on average 2.9659425333675253) internal successors, (242884), 81891 states have internal predecessors, (242884), 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 18:01:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81892 states to 81892 states and 242884 transitions. [2021-08-21 18:01:43,483 INFO L78 Accepts]: Start accepts. Automaton has 81892 states and 242884 transitions. Word has length 46 [2021-08-21 18:01:43,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:01:43,483 INFO L470 AbstractCegarLoop]: Abstraction has 81892 states and 242884 transitions. [2021-08-21 18:01:43,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:01:43,483 INFO L276 IsEmpty]: Start isEmpty. Operand 81892 states and 242884 transitions. [2021-08-21 18:01:44,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:01:44,031 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:01:44,031 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:01:44,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-21 18:01:44,032 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:01:44,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:01:44,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1562404254, now seen corresponding path program 38 times [2021-08-21 18:01:44,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:01:44,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810163281] [2021-08-21 18:01:44,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:01:44,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:01:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:01:44,146 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 18:01:44,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:01:44,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810163281] [2021-08-21 18:01:44,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810163281] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:01:44,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:01:44,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-21 18:01:44,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843758531] [2021-08-21 18:01:44,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-21 18:01:44,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:01:44,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-21 18:01:44,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-21 18:01:44,149 INFO L87 Difference]: Start difference. First operand 81892 states and 242884 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:01:45,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:01:45,713 INFO L93 Difference]: Finished difference Result 161333 states and 480919 transitions. [2021-08-21 18:01:45,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-21 18:01:45,714 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 46 [2021-08-21 18:01:45,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:01:46,672 INFO L225 Difference]: With dead ends: 161333 [2021-08-21 18:01:46,672 INFO L226 Difference]: Without dead ends: 160341 [2021-08-21 18:01:46,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 157.8ms TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-08-21 18:01:46,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160341 states. [2021-08-21 18:01:49,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160341 to 80702. [2021-08-21 18:01:49,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80702 states, 80701 states have (on average 2.967038822319426) internal successors, (239443), 80701 states have internal predecessors, (239443), 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 18:01:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80702 states to 80702 states and 239443 transitions. [2021-08-21 18:01:49,490 INFO L78 Accepts]: Start accepts. Automaton has 80702 states and 239443 transitions. Word has length 46 [2021-08-21 18:01:49,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:01:49,490 INFO L470 AbstractCegarLoop]: Abstraction has 80702 states and 239443 transitions. [2021-08-21 18:01:49,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:01:49,490 INFO L276 IsEmpty]: Start isEmpty. Operand 80702 states and 239443 transitions. [2021-08-21 18:01:49,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:01:49,659 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:01:49,659 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:01:49,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-21 18:01:49,660 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:01:49,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:01:49,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1822035728, now seen corresponding path program 39 times [2021-08-21 18:01:49,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:01:49,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790892480] [2021-08-21 18:01:49,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:01:49,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:01:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:01:49,724 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 18:01:49,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:01:49,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790892480] [2021-08-21 18:01:49,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790892480] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:01:49,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:01:49,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 18:01:49,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681368584] [2021-08-21 18:01:49,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 18:01:49,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:01:49,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 18:01:49,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-21 18:01:49,725 INFO L87 Difference]: Start difference. First operand 80702 states and 239443 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 18:01:51,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:01:51,300 INFO L93 Difference]: Finished difference Result 155596 states and 448215 transitions. [2021-08-21 18:01:51,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 18:01:51,300 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 46 [2021-08-21 18:01:51,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:01:51,902 INFO L225 Difference]: With dead ends: 155596 [2021-08-21 18:01:51,903 INFO L226 Difference]: Without dead ends: 153329 [2021-08-21 18:01:51,903 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-08-21 18:01:52,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153329 states. [2021-08-21 18:01:54,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153329 to 78361. [2021-08-21 18:01:54,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78361 states, 78360 states have (on average 2.8480729964267484) internal successors, (223175), 78360 states have internal predecessors, (223175), 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 18:01:54,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78361 states to 78361 states and 223175 transitions. [2021-08-21 18:01:54,899 INFO L78 Accepts]: Start accepts. Automaton has 78361 states and 223175 transitions. Word has length 46 [2021-08-21 18:01:54,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:01:54,899 INFO L470 AbstractCegarLoop]: Abstraction has 78361 states and 223175 transitions. [2021-08-21 18:01:54,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 18:01:54,900 INFO L276 IsEmpty]: Start isEmpty. Operand 78361 states and 223175 transitions. [2021-08-21 18:01:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:01:55,092 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:01:55,092 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:01:55,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-21 18:01:55,093 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:01:55,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:01:55,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1028633792, now seen corresponding path program 40 times [2021-08-21 18:01:55,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:01:55,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549837535] [2021-08-21 18:01:55,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:01:55,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:01:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:01:55,156 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 18:01:55,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:01:55,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549837535] [2021-08-21 18:01:55,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549837535] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:01:55,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:01:55,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 18:01:55,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817338397] [2021-08-21 18:01:55,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 18:01:55,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:01:55,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 18:01:55,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-21 18:01:55,158 INFO L87 Difference]: Start difference. First operand 78361 states and 223175 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 18:01:56,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:01:56,387 INFO L93 Difference]: Finished difference Result 127183 states and 344115 transitions. [2021-08-21 18:01:56,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 18:01:56,387 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 46 [2021-08-21 18:01:56,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:01:56,794 INFO L225 Difference]: With dead ends: 127183 [2021-08-21 18:01:56,794 INFO L226 Difference]: Without dead ends: 121622 [2021-08-21 18:01:56,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 82.0ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-21 18:01:57,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121622 states. [2021-08-21 18:01:58,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121622 to 65846. [2021-08-21 18:01:58,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65846 states, 65845 states have (on average 2.6980788214746756) internal successors, (177655), 65845 states have internal predecessors, (177655), 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 18:01:59,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65846 states to 65846 states and 177655 transitions. [2021-08-21 18:01:59,061 INFO L78 Accepts]: Start accepts. Automaton has 65846 states and 177655 transitions. Word has length 46 [2021-08-21 18:01:59,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:01:59,062 INFO L470 AbstractCegarLoop]: Abstraction has 65846 states and 177655 transitions. [2021-08-21 18:01:59,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 18:01:59,062 INFO L276 IsEmpty]: Start isEmpty. Operand 65846 states and 177655 transitions. [2021-08-21 18:01:59,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:01:59,191 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:01:59,191 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:01:59,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-21 18:01:59,192 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:01:59,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:01:59,192 INFO L82 PathProgramCache]: Analyzing trace with hash 572592712, now seen corresponding path program 41 times [2021-08-21 18:01:59,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:01:59,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579665908] [2021-08-21 18:01:59,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:01:59,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:01:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:01:59,275 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 18:01:59,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:01:59,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579665908] [2021-08-21 18:01:59,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579665908] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:01:59,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:01:59,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-21 18:01:59,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115275630] [2021-08-21 18:01:59,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-21 18:01:59,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:01:59,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-21 18:01:59,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-21 18:01:59,277 INFO L87 Difference]: Start difference. First operand 65846 states and 177655 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:02:00,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:02:00,566 INFO L93 Difference]: Finished difference Result 120210 states and 319418 transitions. [2021-08-21 18:02:00,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-21 18:02:00,566 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 46 [2021-08-21 18:02:00,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:02:01,202 INFO L225 Difference]: With dead ends: 120210 [2021-08-21 18:02:01,202 INFO L226 Difference]: Without dead ends: 114886 [2021-08-21 18:02:01,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 116.7ms TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-08-21 18:02:01,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114886 states. [2021-08-21 18:02:02,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114886 to 62300. [2021-08-21 18:02:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62300 states, 62299 states have (on average 2.676479558259362) internal successors, (166742), 62299 states have internal predecessors, (166742), 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 18:02:03,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62300 states to 62300 states and 166742 transitions. [2021-08-21 18:02:03,030 INFO L78 Accepts]: Start accepts. Automaton has 62300 states and 166742 transitions. Word has length 46 [2021-08-21 18:02:03,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:02:03,030 INFO L470 AbstractCegarLoop]: Abstraction has 62300 states and 166742 transitions. [2021-08-21 18:02:03,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:02:03,030 INFO L276 IsEmpty]: Start isEmpty. Operand 62300 states and 166742 transitions. [2021-08-21 18:02:03,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:02:03,140 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:02:03,140 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:02:03,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-21 18:02:03,140 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:02:03,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:02:03,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1342393702, now seen corresponding path program 42 times [2021-08-21 18:02:03,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:02:03,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392794870] [2021-08-21 18:02:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:02:03,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:02:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:02:03,231 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 18:02:03,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:02:03,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392794870] [2021-08-21 18:02:03,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392794870] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:02:03,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:02:03,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-21 18:02:03,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395805617] [2021-08-21 18:02:03,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-21 18:02:03,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:02:03,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-21 18:02:03,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-08-21 18:02:03,233 INFO L87 Difference]: Start difference. First operand 62300 states and 166742 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 18:02:04,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:02:04,552 INFO L93 Difference]: Finished difference Result 95426 states and 248244 transitions. [2021-08-21 18:02:04,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-21 18:02:04,557 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 46 [2021-08-21 18:02:04,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:02:05,076 INFO L225 Difference]: With dead ends: 95426 [2021-08-21 18:02:05,076 INFO L226 Difference]: Without dead ends: 93077 [2021-08-21 18:02:05,076 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 186.5ms TimeCoverageRelationStatistics Valid=253, Invalid=503, Unknown=0, NotChecked=0, Total=756 [2021-08-21 18:02:05,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93077 states. [2021-08-21 18:02:06,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93077 to 58607. [2021-08-21 18:02:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58607 states, 58606 states have (on average 2.6757328601167116) internal successors, (156814), 58606 states have internal predecessors, (156814), 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 18:02:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58607 states to 58607 states and 156814 transitions. [2021-08-21 18:02:06,855 INFO L78 Accepts]: Start accepts. Automaton has 58607 states and 156814 transitions. Word has length 46 [2021-08-21 18:02:06,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:02:06,855 INFO L470 AbstractCegarLoop]: Abstraction has 58607 states and 156814 transitions. [2021-08-21 18:02:06,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 18:02:06,855 INFO L276 IsEmpty]: Start isEmpty. Operand 58607 states and 156814 transitions. [2021-08-21 18:02:06,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:02:06,985 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:02:06,985 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:02:06,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-21 18:02:06,985 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:02:06,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:02:06,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1721196396, now seen corresponding path program 43 times [2021-08-21 18:02:06,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:02:06,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792181359] [2021-08-21 18:02:06,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:02:06,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:02:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:02:07,051 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 18:02:07,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:02:07,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792181359] [2021-08-21 18:02:07,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792181359] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:02:07,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:02:07,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 18:02:07,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868283240] [2021-08-21 18:02:07,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 18:02:07,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:02:07,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 18:02:07,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-21 18:02:07,056 INFO L87 Difference]: Start difference. First operand 58607 states and 156814 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 18:02:08,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:02:08,054 INFO L93 Difference]: Finished difference Result 120205 states and 323820 transitions. [2021-08-21 18:02:08,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 18:02:08,055 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 46 [2021-08-21 18:02:08,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:02:08,433 INFO L225 Difference]: With dead ends: 120205 [2021-08-21 18:02:08,434 INFO L226 Difference]: Without dead ends: 116873 [2021-08-21 18:02:08,434 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 47.4ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-08-21 18:02:08,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116873 states. [2021-08-21 18:02:10,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116873 to 52675. [2021-08-21 18:02:10,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52675 states, 52674 states have (on average 2.6352849603219806) internal successors, (138811), 52674 states have internal predecessors, (138811), 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 18:02:10,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52675 states to 52675 states and 138811 transitions. [2021-08-21 18:02:10,416 INFO L78 Accepts]: Start accepts. Automaton has 52675 states and 138811 transitions. Word has length 46 [2021-08-21 18:02:10,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:02:10,417 INFO L470 AbstractCegarLoop]: Abstraction has 52675 states and 138811 transitions. [2021-08-21 18:02:10,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 18:02:10,418 INFO L276 IsEmpty]: Start isEmpty. Operand 52675 states and 138811 transitions. [2021-08-21 18:02:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:02:10,563 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:02:10,563 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:02:10,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-21 18:02:10,563 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:02:10,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:02:10,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1894444978, now seen corresponding path program 44 times [2021-08-21 18:02:10,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:02:10,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281637343] [2021-08-21 18:02:10,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:02:10,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:02:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:02:10,669 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 18:02:10,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:02:10,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281637343] [2021-08-21 18:02:10,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281637343] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:02:10,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:02:10,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 18:02:10,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138224109] [2021-08-21 18:02:10,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 18:02:10,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:02:10,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 18:02:10,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-21 18:02:10,671 INFO L87 Difference]: Start difference. First operand 52675 states and 138811 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 18:02:11,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:02:11,957 INFO L93 Difference]: Finished difference Result 113353 states and 304954 transitions. [2021-08-21 18:02:11,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 18:02:11,958 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 46 [2021-08-21 18:02:11,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:02:12,685 INFO L225 Difference]: With dead ends: 113353 [2021-08-21 18:02:12,685 INFO L226 Difference]: Without dead ends: 111253 [2021-08-21 18:02:12,685 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 143.6ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-21 18:02:12,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111253 states. [2021-08-21 18:02:14,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111253 to 49052. [2021-08-21 18:02:14,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49052 states, 49051 states have (on average 2.6135043118386987) internal successors, (128195), 49051 states have internal predecessors, (128195), 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 18:02:14,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49052 states to 49052 states and 128195 transitions. [2021-08-21 18:02:14,423 INFO L78 Accepts]: Start accepts. Automaton has 49052 states and 128195 transitions. Word has length 46 [2021-08-21 18:02:14,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:02:14,424 INFO L470 AbstractCegarLoop]: Abstraction has 49052 states and 128195 transitions. [2021-08-21 18:02:14,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 18:02:14,424 INFO L276 IsEmpty]: Start isEmpty. Operand 49052 states and 128195 transitions. [2021-08-21 18:02:14,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:02:14,503 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:02:14,503 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:02:14,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-21 18:02:14,503 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:02:14,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:02:14,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1631289096, now seen corresponding path program 45 times [2021-08-21 18:02:14,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:02:14,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520137522] [2021-08-21 18:02:14,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:02:14,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:02:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:02:14,570 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 18:02:14,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:02:14,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520137522] [2021-08-21 18:02:14,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520137522] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:02:14,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:02:14,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-21 18:02:14,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117077681] [2021-08-21 18:02:14,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-21 18:02:14,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:02:14,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-21 18:02:14,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-08-21 18:02:14,572 INFO L87 Difference]: Start difference. First operand 49052 states and 128195 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 18:02:15,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:02:15,492 INFO L93 Difference]: Finished difference Result 95297 states and 251616 transitions. [2021-08-21 18:02:15,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-21 18:02:15,492 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 46 [2021-08-21 18:02:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:02:15,755 INFO L225 Difference]: With dead ends: 95297 [2021-08-21 18:02:15,755 INFO L226 Difference]: Without dead ends: 94201 [2021-08-21 18:02:15,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 92.6ms TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-08-21 18:02:15,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94201 states. [2021-08-21 18:02:17,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94201 to 47112. [2021-08-21 18:02:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47112 states, 47111 states have (on average 2.603128780964106) internal successors, (122636), 47111 states have internal predecessors, (122636), 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 18:02:17,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47112 states to 47112 states and 122636 transitions. [2021-08-21 18:02:17,237 INFO L78 Accepts]: Start accepts. Automaton has 47112 states and 122636 transitions. Word has length 46 [2021-08-21 18:02:17,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:02:17,237 INFO L470 AbstractCegarLoop]: Abstraction has 47112 states and 122636 transitions. [2021-08-21 18:02:17,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 18:02:17,237 INFO L276 IsEmpty]: Start isEmpty. Operand 47112 states and 122636 transitions. [2021-08-21 18:02:17,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:02:17,313 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:02:17,313 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:02:17,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-21 18:02:17,314 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:02:17,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:02:17,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1161571286, now seen corresponding path program 46 times [2021-08-21 18:02:17,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:02:17,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822147801] [2021-08-21 18:02:17,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:02:17,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:02:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:02:17,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 18:02:17,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:02:17,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822147801] [2021-08-21 18:02:17,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822147801] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:02:17,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:02:17,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-21 18:02:17,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766752735] [2021-08-21 18:02:17,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-21 18:02:17,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:02:17,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-21 18:02:17,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-21 18:02:17,397 INFO L87 Difference]: Start difference. First operand 47112 states and 122636 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:02:18,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:02:18,415 INFO L93 Difference]: Finished difference Result 92205 states and 243163 transitions. [2021-08-21 18:02:18,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-21 18:02:18,416 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 46 [2021-08-21 18:02:18,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:02:18,663 INFO L225 Difference]: With dead ends: 92205 [2021-08-21 18:02:18,663 INFO L226 Difference]: Without dead ends: 91285 [2021-08-21 18:02:18,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 116.6ms TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-08-21 18:02:19,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91285 states. [2021-08-21 18:02:19,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91285 to 45808. [2021-08-21 18:02:20,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45808 states, 45807 states have (on average 2.605955421660445) internal successors, (119371), 45807 states have internal predecessors, (119371), 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 18:02:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45808 states to 45808 states and 119371 transitions. [2021-08-21 18:02:20,141 INFO L78 Accepts]: Start accepts. Automaton has 45808 states and 119371 transitions. Word has length 46 [2021-08-21 18:02:20,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:02:20,141 INFO L470 AbstractCegarLoop]: Abstraction has 45808 states and 119371 transitions. [2021-08-21 18:02:20,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:02:20,141 INFO L276 IsEmpty]: Start isEmpty. Operand 45808 states and 119371 transitions. [2021-08-21 18:02:20,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:02:20,215 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:02:20,215 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:02:20,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-21 18:02:20,215 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:02:20,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:02:20,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1681650576, now seen corresponding path program 47 times [2021-08-21 18:02:20,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:02:20,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596289280] [2021-08-21 18:02:20,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:02:20,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:02:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:02:20,265 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 18:02:20,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:02:20,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596289280] [2021-08-21 18:02:20,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596289280] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:02:20,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:02:20,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 18:02:20,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3085793] [2021-08-21 18:02:20,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 18:02:20,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:02:20,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 18:02:20,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-21 18:02:20,267 INFO L87 Difference]: Start difference. First operand 45808 states and 119371 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 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 18:02:20,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:02:20,988 INFO L93 Difference]: Finished difference Result 78685 states and 209535 transitions. [2021-08-21 18:02:20,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 18:02:20,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 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 46 [2021-08-21 18:02:20,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:02:21,206 INFO L225 Difference]: With dead ends: 78685 [2021-08-21 18:02:21,206 INFO L226 Difference]: Without dead ends: 77461 [2021-08-21 18:02:21,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 27.7ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-21 18:02:21,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77461 states. [2021-08-21 18:02:22,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77461 to 35518. [2021-08-21 18:02:22,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35518 states, 35517 states have (on average 2.611397359011178) internal successors, (92749), 35517 states have internal predecessors, (92749), 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 18:02:22,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35518 states to 35518 states and 92749 transitions. [2021-08-21 18:02:22,572 INFO L78 Accepts]: Start accepts. Automaton has 35518 states and 92749 transitions. Word has length 46 [2021-08-21 18:02:22,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:02:22,572 INFO L470 AbstractCegarLoop]: Abstraction has 35518 states and 92749 transitions. [2021-08-21 18:02:22,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 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 18:02:22,572 INFO L276 IsEmpty]: Start isEmpty. Operand 35518 states and 92749 transitions. [2021-08-21 18:02:22,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:02:22,631 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:02:22,631 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:02:22,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-21 18:02:22,631 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:02:22,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:02:22,632 INFO L82 PathProgramCache]: Analyzing trace with hash 631959056, now seen corresponding path program 48 times [2021-08-21 18:02:22,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:02:22,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549692582] [2021-08-21 18:02:22,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:02:22,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:02:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:02:22,694 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 18:02:22,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:02:22,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549692582] [2021-08-21 18:02:22,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549692582] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:02:22,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:02:22,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 18:02:22,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729349201] [2021-08-21 18:02:22,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 18:02:22,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:02:22,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 18:02:22,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-21 18:02:22,696 INFO L87 Difference]: Start difference. First operand 35518 states and 92749 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 18:02:23,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:02:23,068 INFO L93 Difference]: Finished difference Result 41817 states and 106272 transitions. [2021-08-21 18:02:23,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 18:02:23,069 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 46 [2021-08-21 18:02:23,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:02:23,154 INFO L225 Difference]: With dead ends: 41817 [2021-08-21 18:02:23,154 INFO L226 Difference]: Without dead ends: 38277 [2021-08-21 18:02:23,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 50.0ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-08-21 18:02:23,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38277 states. [2021-08-21 18:02:23,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38277 to 18210. [2021-08-21 18:02:23,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18210 states, 18209 states have (on average 2.523532319182822) internal successors, (45951), 18209 states have internal predecessors, (45951), 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 18:02:23,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18210 states to 18210 states and 45951 transitions. [2021-08-21 18:02:23,755 INFO L78 Accepts]: Start accepts. Automaton has 18210 states and 45951 transitions. Word has length 46 [2021-08-21 18:02:23,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:02:23,755 INFO L470 AbstractCegarLoop]: Abstraction has 18210 states and 45951 transitions. [2021-08-21 18:02:23,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 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 18:02:23,755 INFO L276 IsEmpty]: Start isEmpty. Operand 18210 states and 45951 transitions. [2021-08-21 18:02:23,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:02:23,781 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:02:23,781 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:02:23,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-21 18:02:23,781 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:02:23,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:02:23,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1556820226, now seen corresponding path program 49 times [2021-08-21 18:02:23,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:02:23,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878581200] [2021-08-21 18:02:23,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:02:23,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:02:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:02:23,844 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 18:02:23,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:02:23,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878581200] [2021-08-21 18:02:23,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878581200] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:02:23,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:02:23,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-21 18:02:23,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192082039] [2021-08-21 18:02:23,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 18:02:23,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:02:23,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 18:02:23,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-21 18:02:23,845 INFO L87 Difference]: Start difference. First operand 18210 states and 45951 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 18:02:24,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:02:24,225 INFO L93 Difference]: Finished difference Result 13373 states and 29800 transitions. [2021-08-21 18:02:24,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 18:02:24,225 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 46 [2021-08-21 18:02:24,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:02:24,241 INFO L225 Difference]: With dead ends: 13373 [2021-08-21 18:02:24,242 INFO L226 Difference]: Without dead ends: 7419 [2021-08-21 18:02:24,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 73.7ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-21 18:02:24,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7419 states. [2021-08-21 18:02:24,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7419 to 4395. [2021-08-21 18:02:24,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4395 states, 4394 states have (on average 2.324988620846609) internal successors, (10216), 4394 states have internal predecessors, (10216), 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 18:02:24,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 10216 transitions. [2021-08-21 18:02:24,442 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 10216 transitions. Word has length 46 [2021-08-21 18:02:24,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:02:24,442 INFO L470 AbstractCegarLoop]: Abstraction has 4395 states and 10216 transitions. [2021-08-21 18:02:24,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 18:02:24,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 10216 transitions. [2021-08-21 18:02:24,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:02:24,448 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:02:24,448 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:02:24,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-21 18:02:24,449 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:02:24,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:02:24,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1305463926, now seen corresponding path program 50 times [2021-08-21 18:02:24,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:02:24,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792418000] [2021-08-21 18:02:24,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:02:24,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:02:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:02:24,536 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 18:02:24,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:02:24,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792418000] [2021-08-21 18:02:24,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792418000] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:02:24,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:02:24,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-21 18:02:24,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999883234] [2021-08-21 18:02:24,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-21 18:02:24,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:02:24,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-21 18:02:24,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-21 18:02:24,538 INFO L87 Difference]: Start difference. First operand 4395 states and 10216 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:02:24,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:02:24,863 INFO L93 Difference]: Finished difference Result 4435 states and 8614 transitions. [2021-08-21 18:02:24,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 18:02:24,863 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 46 [2021-08-21 18:02:24,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:02:24,865 INFO L225 Difference]: With dead ends: 4435 [2021-08-21 18:02:24,865 INFO L226 Difference]: Without dead ends: 1275 [2021-08-21 18:02:24,866 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 112.9ms TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2021-08-21 18:02:24,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2021-08-21 18:02:24,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 887. [2021-08-21 18:02:24,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 886 states have (on average 1.9390519187358917) internal successors, (1718), 886 states have internal predecessors, (1718), 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 18:02:24,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1718 transitions. [2021-08-21 18:02:24,875 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1718 transitions. Word has length 46 [2021-08-21 18:02:24,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:02:24,875 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1718 transitions. [2021-08-21 18:02:24,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 18:02:24,876 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1718 transitions. [2021-08-21 18:02:24,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 18:02:24,877 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 18:02:24,877 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, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 18:02:24,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-21 18:02:24,877 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-21 18:02:24,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 18:02:24,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1668144680, now seen corresponding path program 51 times [2021-08-21 18:02:24,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 18:02:24,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763803465] [2021-08-21 18:02:24,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 18:02:24,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 18:02:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 18:02:24,964 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 18:02:24,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 18:02:24,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763803465] [2021-08-21 18:02:24,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763803465] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 18:02:24,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 18:02:24,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-21 18:02:24,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792429111] [2021-08-21 18:02:24,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-21 18:02:24,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 18:02:24,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-21 18:02:24,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-08-21 18:02:24,966 INFO L87 Difference]: Start difference. First operand 887 states and 1718 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 18:02:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 18:02:25,223 INFO L93 Difference]: Finished difference Result 1058 states and 1829 transitions. [2021-08-21 18:02:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 18:02:25,224 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 46 [2021-08-21 18:02:25,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 18:02:25,224 INFO L225 Difference]: With dead ends: 1058 [2021-08-21 18:02:25,224 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 18:02:25,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 119.7ms TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-08-21 18:02:25,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 18:02:25,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 18:02:25,224 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 18:02:25,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 18:02:25,225 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2021-08-21 18:02:25,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 18:02:25,225 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 18:02:25,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 18:02:25,225 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 18:02:25,225 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 18:02:25,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT [2021-08-21 18:02:25,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 18:02:25,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 18:02:25,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 18:02:25,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-08-21 18:02:25,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATION [2021-08-21 18:02:25,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5INUSE_VIOLATION [2021-08-21 18:02:25,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-21 18:02:25,230 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 18:02:25,230 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 18:02:25,232 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:02:25 BasicIcfg [2021-08-21 18:02:25,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 18:02:25,233 INFO L168 Benchmark]: Toolchain (without parser) took 254762.06 ms. Allocated memory was 206.6 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 187.4 MB in the beginning and 5.7 GB in the end (delta: -5.5 GB). Peak memory consumption was 2.3 GB. Max. memory is 8.0 GB. [2021-08-21 18:02:25,233 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 206.6 MB. Free memory is still 188.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 18:02:25,233 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.07 ms. Allocated memory is still 206.6 MB. Free memory was 187.4 MB in the beginning and 185.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 18:02:25,233 INFO L168 Benchmark]: Boogie Preprocessor took 14.15 ms. Allocated memory is still 206.6 MB. Free memory was 185.9 MB in the beginning and 184.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 18:02:25,234 INFO L168 Benchmark]: RCFGBuilder took 330.90 ms. Allocated memory is still 206.6 MB. Free memory was 184.8 MB in the beginning and 168.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-08-21 18:02:25,234 INFO L168 Benchmark]: TraceAbstraction took 254388.09 ms. Allocated memory was 206.6 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 167.6 MB in the beginning and 5.7 GB in the end (delta: -5.5 GB). Peak memory consumption was 2.3 GB. Max. memory is 8.0 GB. [2021-08-21 18:02:25,235 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 0.20 ms. Allocated memory is still 206.6 MB. Free memory is still 188.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.07 ms. Allocated memory is still 206.6 MB. Free memory was 187.4 MB in the beginning and 185.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.15 ms. Allocated memory is still 206.6 MB. Free memory was 185.9 MB in the beginning and 184.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 330.90 ms. Allocated memory is still 206.6 MB. Free memory was 184.8 MB in the beginning and 168.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 254388.09 ms. Allocated memory was 206.6 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 167.6 MB in the beginning and 5.7 GB in the end (delta: -5.5 GB). Peak memory consumption was 2.3 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 514839, positive: 477626, positive conditional: 477626, positive unconditional: 0, negative: 37213, negative conditional: 37213, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 514839, positive: 477626, positive conditional: 0, positive unconditional: 477626, negative: 37213, negative conditional: 0, negative unconditional: 37213, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 745, positive: 687, positive conditional: 0, positive unconditional: 687, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 745, positive: 633, positive conditional: 0, positive unconditional: 633, negative: 112, negative conditional: 0, negative unconditional: 112, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 112, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 314, positive: 170, positive conditional: 0, positive unconditional: 170, negative: 143, negative conditional: 0, negative unconditional: 143, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 514839, positive: 476939, positive conditional: 0, positive unconditional: 476939, negative: 37155, negative conditional: 0, negative unconditional: 37155, unknown: 745, unknown conditional: 0, unknown unconditional: 745] , Statistics on independence cache: Total cache size (in pairs): 745, Positive cache size: 687, Positive conditional cache size: 0, Positive unconditional cache size: 687, Negative cache size: 58, Negative conditional cache size: 0, Negative unconditional cache size: 58, 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: 110]: 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 13 procedures, 98 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 254251.1ms, OverallIterations: 51, TraceHistogramMax: 1, EmptinessCheckTime: 11005.5ms, AutomataDifference: 105200.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5893.1ms, PartialOrderReductionTime: 5880.9ms, HoareTripleCheckerStatistics: 4544 SDtfs, 8930 SDslu, 18568 SDs, 0 SdLazy, 26789 SolverSat, 4648 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17442.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 920 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 778 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1964 ImplicationChecksByTransitivity, 5984.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=86044occurred in iteration=30, InterpolantAutomatonStates: 722, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 126867.8ms AutomataMinimizationTime, 51 MinimizatonAttempts, 2945226 StatesRemovedByMinimization, 50 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 64.9ms SsaConstructionTime, 356.1ms SatisfiabilityAnalysisTime, 4399.6ms InterpolantComputationTime, 2346 NumberOfCodeBlocks, 2346 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 2295 ConstructedInterpolants, 0 QuantifiedInterpolants, 6966 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 51 InterpolantComputations, 51 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 18:02:25,263 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...