/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 14:38:27,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 14:38:27,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 14:38:27,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 14:38:27,922 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.epf [2021-08-06 14:38:27,945 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 14:38:27,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 14:38:27,945 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-06 14:38:27,946 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-06 14:38:27,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 14:38:27,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 14:38:27,947 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 14:38:27,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 14:38:27,947 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 14:38:27,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 14:38:27,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 14:38:27,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 14:38:27,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 14:38:27,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 14:38:27,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 14:38:27,948 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 14:38:27,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 14:38:27,948 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 14:38:27,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 14:38:27,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 14:38:27,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 14:38:27,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 14:38:27,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 14:38:27,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 14:38:27,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 14:38:27,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 14:38:27,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 14:38:27,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 14:38:27,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 14:38:27,950 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 14:38:27,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 14:38:27,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 14:38:28,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 14:38:28,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 14:38:28,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 14:38:28,210 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-06 14:38:28,212 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-06 14:38:28,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl [2021-08-06 14:38:28,213 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2021-08-06 14:38:28,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 14:38:28,253 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-06 14:38:28,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 14:38:28,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 14:38:28,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 14:38:28,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:38:28" (1/1) ... [2021-08-06 14:38:28,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:38:28" (1/1) ... [2021-08-06 14:38:28,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 14:38:28,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 14:38:28,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 14:38:28,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 14:38:28,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:38:28" (1/1) ... [2021-08-06 14:38:28,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:38:28" (1/1) ... [2021-08-06 14:38:28,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:38:28" (1/1) ... [2021-08-06 14:38:28,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:38:28" (1/1) ... [2021-08-06 14:38:28,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:38:28" (1/1) ... [2021-08-06 14:38:28,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:38:28" (1/1) ... [2021-08-06 14:38:28,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:38:28" (1/1) ... [2021-08-06 14:38:28,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 14:38:28,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 14:38:28,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 14:38:28,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 14:38:28,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:38:28" (1/1) ... [2021-08-06 14:38:28,306 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 14:38:28,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 14:38:28,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-06 14:38:28,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-06 14:38:28,360 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-06 14:38:28,360 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-06 14:38:28,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-06 14:38:28,360 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-06 14:38:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-06 14:38:28,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-06 14:38:28,361 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-06 14:38:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 14:38:28,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 14:38:28,361 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-06 14:38:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-06 14:38:28,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-06 14:38:28,362 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 14:38:28,502 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 14:38:28,502 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-06 14:38:28,504 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 02:38:28 BoogieIcfgContainer [2021-08-06 14:38:28,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 14:38:28,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 14:38:28,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 14:38:28,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 14:38:28,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:38:28" (1/2) ... [2021-08-06 14:38:28,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d80e9c and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 02:38:28, skipping insertion in model container [2021-08-06 14:38:28,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 02:38:28" (2/2) ... [2021-08-06 14:38:28,509 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-08-06 14:38:28,511 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 14:38:28,512 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 14:38:28,512 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-06 14:38:28,512 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 14:38:28,589 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-08-06 14:38:28,619 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 14:38:28,624 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 14:38:28,624 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-06 14:38:28,631 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 53 transitions, 130 flow [2021-08-06 14:38:28,731 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3169 states, 3168 states have (on average 2.785037878787879) internal successors, (8823), 3168 states have internal predecessors, (8823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:28,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 3169 states, 3168 states have (on average 2.785037878787879) internal successors, (8823), 3168 states have internal predecessors, (8823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:28,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:28,763 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:28,763 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, 1, 1] [2021-08-06 14:38:28,764 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:28,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:28,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1471808152, now seen corresponding path program 1 times [2021-08-06 14:38:28,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:28,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407200415] [2021-08-06 14:38:28,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:28,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:29,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:29,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407200415] [2021-08-06 14:38:29,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407200415] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:29,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:29,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:29,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836050352] [2021-08-06 14:38:29,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:29,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:29,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:29,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:29,132 INFO L87 Difference]: Start difference. First operand has 3169 states, 3168 states have (on average 2.785037878787879) internal successors, (8823), 3168 states have internal predecessors, (8823), 0 states have call successors, (0), 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 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:29,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:29,405 INFO L93 Difference]: Finished difference Result 4259 states and 11383 transitions. [2021-08-06 14:38:29,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 14:38:29,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:29,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:29,443 INFO L225 Difference]: With dead ends: 4259 [2021-08-06 14:38:29,443 INFO L226 Difference]: Without dead ends: 4067 [2021-08-06 14:38:29,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 182.1ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-08-06 14:38:29,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4067 states. [2021-08-06 14:38:29,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4067 to 3212. [2021-08-06 14:38:29,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3212 states, 3211 states have (on average 2.7710993459981315) internal successors, (8898), 3211 states have internal predecessors, (8898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:29,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3212 states to 3212 states and 8898 transitions. [2021-08-06 14:38:29,581 INFO L78 Accepts]: Start accepts. Automaton has 3212 states and 8898 transitions. Word has length 48 [2021-08-06 14:38:29,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:29,582 INFO L470 AbstractCegarLoop]: Abstraction has 3212 states and 8898 transitions. [2021-08-06 14:38:29,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:29,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3212 states and 8898 transitions. [2021-08-06 14:38:29,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:29,590 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:29,590 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, 1, 1] [2021-08-06 14:38:29,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 14:38:29,591 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:29,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:29,593 INFO L82 PathProgramCache]: Analyzing trace with hash 315387816, now seen corresponding path program 2 times [2021-08-06 14:38:29,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:29,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476534283] [2021-08-06 14:38:29,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:29,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:29,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:29,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476534283] [2021-08-06 14:38:29,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476534283] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:29,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:29,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:29,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6041255] [2021-08-06 14:38:29,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:29,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:29,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:29,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:29,862 INFO L87 Difference]: Start difference. First operand 3212 states and 8898 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:30,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:30,189 INFO L93 Difference]: Finished difference Result 5269 states and 14643 transitions. [2021-08-06 14:38:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 14:38:30,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:30,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:30,210 INFO L225 Difference]: With dead ends: 5269 [2021-08-06 14:38:30,211 INFO L226 Difference]: Without dead ends: 5269 [2021-08-06 14:38:30,211 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-08-06 14:38:30,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5269 states. [2021-08-06 14:38:30,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5269 to 4180. [2021-08-06 14:38:30,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4180 states, 4179 states have (on average 2.7647762622636995) internal successors, (11554), 4179 states have internal predecessors, (11554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:30,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4180 states to 4180 states and 11554 transitions. [2021-08-06 14:38:30,336 INFO L78 Accepts]: Start accepts. Automaton has 4180 states and 11554 transitions. Word has length 48 [2021-08-06 14:38:30,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:30,336 INFO L470 AbstractCegarLoop]: Abstraction has 4180 states and 11554 transitions. [2021-08-06 14:38:30,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:30,337 INFO L276 IsEmpty]: Start isEmpty. Operand 4180 states and 11554 transitions. [2021-08-06 14:38:30,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:30,345 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:30,345 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, 1, 1] [2021-08-06 14:38:30,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 14:38:30,345 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:30,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:30,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1865950614, now seen corresponding path program 3 times [2021-08-06 14:38:30,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:30,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016425881] [2021-08-06 14:38:30,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:30,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:30,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:30,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:30,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016425881] [2021-08-06 14:38:30,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016425881] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:30,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:30,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:30,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967076606] [2021-08-06 14:38:30,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:30,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:30,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:30,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:30,486 INFO L87 Difference]: Start difference. First operand 4180 states and 11554 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:30,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:30,657 INFO L93 Difference]: Finished difference Result 5339 states and 14297 transitions. [2021-08-06 14:38:30,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 14:38:30,658 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:30,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:30,675 INFO L225 Difference]: With dead ends: 5339 [2021-08-06 14:38:30,676 INFO L226 Difference]: Without dead ends: 5146 [2021-08-06 14:38:30,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-08-06 14:38:30,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5146 states. [2021-08-06 14:38:30,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5146 to 4227. [2021-08-06 14:38:30,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4227 states, 4226 states have (on average 2.7536677709417887) internal successors, (11637), 4226 states have internal predecessors, (11637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:30,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 11637 transitions. [2021-08-06 14:38:30,765 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 11637 transitions. Word has length 48 [2021-08-06 14:38:30,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:30,767 INFO L470 AbstractCegarLoop]: Abstraction has 4227 states and 11637 transitions. [2021-08-06 14:38:30,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:30,767 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 11637 transitions. [2021-08-06 14:38:30,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:30,773 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:30,774 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, 1, 1] [2021-08-06 14:38:30,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 14:38:30,774 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:30,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:30,775 INFO L82 PathProgramCache]: Analyzing trace with hash 258926934, now seen corresponding path program 4 times [2021-08-06 14:38:30,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:30,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5635297] [2021-08-06 14:38:30,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:30,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:31,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:31,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:31,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5635297] [2021-08-06 14:38:31,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5635297] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:31,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:31,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-06 14:38:31,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570564304] [2021-08-06 14:38:31,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-06 14:38:31,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:31,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-06 14:38:31,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-08-06 14:38:31,032 INFO L87 Difference]: Start difference. First operand 4227 states and 11637 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:31,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:31,402 INFO L93 Difference]: Finished difference Result 6519 states and 17682 transitions. [2021-08-06 14:38:31,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-06 14:38:31,403 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:31,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:31,427 INFO L225 Difference]: With dead ends: 6519 [2021-08-06 14:38:31,427 INFO L226 Difference]: Without dead ends: 6267 [2021-08-06 14:38:31,428 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 132.2ms TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-08-06 14:38:31,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6267 states. [2021-08-06 14:38:31,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6267 to 4492. [2021-08-06 14:38:31,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 4491 states have (on average 2.7336896014250724) internal successors, (12277), 4491 states have internal predecessors, (12277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:31,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 12277 transitions. [2021-08-06 14:38:31,562 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 12277 transitions. Word has length 48 [2021-08-06 14:38:31,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:31,564 INFO L470 AbstractCegarLoop]: Abstraction has 4492 states and 12277 transitions. [2021-08-06 14:38:31,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:31,564 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 12277 transitions. [2021-08-06 14:38:31,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:31,571 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:31,571 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, 1, 1] [2021-08-06 14:38:31,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 14:38:31,572 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:31,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:31,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1316926228, now seen corresponding path program 5 times [2021-08-06 14:38:31,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:31,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989331327] [2021-08-06 14:38:31,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:31,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:31,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:31,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989331327] [2021-08-06 14:38:31,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989331327] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:31,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:31,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-06 14:38:31,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156890935] [2021-08-06 14:38:31,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-06 14:38:31,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:31,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-06 14:38:31,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-08-06 14:38:31,795 INFO L87 Difference]: Start difference. First operand 4492 states and 12277 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:32,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:32,152 INFO L93 Difference]: Finished difference Result 6396 states and 17339 transitions. [2021-08-06 14:38:32,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 14:38:32,153 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:32,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:32,169 INFO L225 Difference]: With dead ends: 6396 [2021-08-06 14:38:32,169 INFO L226 Difference]: Without dead ends: 5955 [2021-08-06 14:38:32,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 100.1ms TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-08-06 14:38:32,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5955 states. [2021-08-06 14:38:32,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5955 to 4243. [2021-08-06 14:38:32,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4243 states, 4242 states have (on average 2.747053276756247) internal successors, (11653), 4242 states have internal predecessors, (11653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:32,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4243 states to 4243 states and 11653 transitions. [2021-08-06 14:38:32,268 INFO L78 Accepts]: Start accepts. Automaton has 4243 states and 11653 transitions. Word has length 48 [2021-08-06 14:38:32,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:32,269 INFO L470 AbstractCegarLoop]: Abstraction has 4243 states and 11653 transitions. [2021-08-06 14:38:32,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:32,269 INFO L276 IsEmpty]: Start isEmpty. Operand 4243 states and 11653 transitions. [2021-08-06 14:38:32,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:32,278 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:32,278 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, 1, 1] [2021-08-06 14:38:32,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 14:38:32,278 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:32,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:32,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1361135156, now seen corresponding path program 6 times [2021-08-06 14:38:32,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:32,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905196869] [2021-08-06 14:38:32,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:32,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:32,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:32,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:32,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905196869] [2021-08-06 14:38:32,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905196869] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:32,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:32,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-06 14:38:32,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100595465] [2021-08-06 14:38:32,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 14:38:32,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:32,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 14:38:32,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 14:38:32,303 INFO L87 Difference]: Start difference. First operand 4243 states and 11653 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:32,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:32,319 INFO L93 Difference]: Finished difference Result 4195 states and 11359 transitions. [2021-08-06 14:38:32,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 14:38:32,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:32,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:32,327 INFO L225 Difference]: With dead ends: 4195 [2021-08-06 14:38:32,328 INFO L226 Difference]: Without dead ends: 4183 [2021-08-06 14:38:32,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 14:38:32,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4183 states. [2021-08-06 14:38:32,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4183 to 4183. [2021-08-06 14:38:32,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4183 states, 4182 states have (on average 2.7082735533237687) internal successors, (11326), 4182 states have internal predecessors, (11326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:32,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4183 states to 4183 states and 11326 transitions. [2021-08-06 14:38:32,407 INFO L78 Accepts]: Start accepts. Automaton has 4183 states and 11326 transitions. Word has length 48 [2021-08-06 14:38:32,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:32,408 INFO L470 AbstractCegarLoop]: Abstraction has 4183 states and 11326 transitions. [2021-08-06 14:38:32,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:32,408 INFO L276 IsEmpty]: Start isEmpty. Operand 4183 states and 11326 transitions. [2021-08-06 14:38:32,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:32,415 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:32,415 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, 1, 1] [2021-08-06 14:38:32,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 14:38:32,416 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:32,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:32,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1666269088, now seen corresponding path program 7 times [2021-08-06 14:38:32,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:32,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304238272] [2021-08-06 14:38:32,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:32,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:32,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:32,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304238272] [2021-08-06 14:38:32,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304238272] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:32,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:32,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 14:38:32,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28421603] [2021-08-06 14:38:32,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 14:38:32,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:32,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 14:38:32,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:32,577 INFO L87 Difference]: Start difference. First operand 4183 states and 11326 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:32,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:32,810 INFO L93 Difference]: Finished difference Result 4936 states and 13167 transitions. [2021-08-06 14:38:32,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 14:38:32,814 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:32,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:32,824 INFO L225 Difference]: With dead ends: 4936 [2021-08-06 14:38:32,824 INFO L226 Difference]: Without dead ends: 4673 [2021-08-06 14:38:32,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 59.3ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-08-06 14:38:32,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4673 states. [2021-08-06 14:38:32,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4673 to 4123. [2021-08-06 14:38:32,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4123 states, 4122 states have (on average 2.7098495875788453) internal successors, (11170), 4122 states have internal predecessors, (11170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:32,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4123 states to 4123 states and 11170 transitions. [2021-08-06 14:38:32,910 INFO L78 Accepts]: Start accepts. Automaton has 4123 states and 11170 transitions. Word has length 48 [2021-08-06 14:38:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:32,910 INFO L470 AbstractCegarLoop]: Abstraction has 4123 states and 11170 transitions. [2021-08-06 14:38:32,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:32,910 INFO L276 IsEmpty]: Start isEmpty. Operand 4123 states and 11170 transitions. [2021-08-06 14:38:32,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:32,918 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:32,918 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, 1, 1] [2021-08-06 14:38:32,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-06 14:38:32,918 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:32,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:32,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1335436040, now seen corresponding path program 8 times [2021-08-06 14:38:32,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:32,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959241830] [2021-08-06 14:38:32,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:32,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:32,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:32,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:32,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959241830] [2021-08-06 14:38:32,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959241830] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:32,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:32,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-06 14:38:32,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969726880] [2021-08-06 14:38:32,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 14:38:32,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:32,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 14:38:32,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 14:38:32,938 INFO L87 Difference]: Start difference. First operand 4123 states and 11170 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:32,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:32,952 INFO L93 Difference]: Finished difference Result 4069 states and 10790 transitions. [2021-08-06 14:38:32,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 14:38:32,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:32,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:32,960 INFO L225 Difference]: With dead ends: 4069 [2021-08-06 14:38:32,961 INFO L226 Difference]: Without dead ends: 4069 [2021-08-06 14:38:32,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 14:38:32,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4069 states. [2021-08-06 14:38:33,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4069 to 4069. [2021-08-06 14:38:33,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4069 states, 4068 states have (on average 2.652409046214356) internal successors, (10790), 4068 states have internal predecessors, (10790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:33,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 10790 transitions. [2021-08-06 14:38:33,036 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 10790 transitions. Word has length 48 [2021-08-06 14:38:33,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:33,037 INFO L470 AbstractCegarLoop]: Abstraction has 4069 states and 10790 transitions. [2021-08-06 14:38:33,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:33,037 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 10790 transitions. [2021-08-06 14:38:33,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:33,044 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:33,044 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, 1, 1] [2021-08-06 14:38:33,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-06 14:38:33,045 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:33,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:33,045 INFO L82 PathProgramCache]: Analyzing trace with hash 295340824, now seen corresponding path program 9 times [2021-08-06 14:38:33,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:33,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429453690] [2021-08-06 14:38:33,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:33,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:33,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:33,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:33,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429453690] [2021-08-06 14:38:33,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429453690] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:33,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:33,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-06 14:38:33,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412395580] [2021-08-06 14:38:33,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-06 14:38:33,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:33,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-06 14:38:33,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-08-06 14:38:33,230 INFO L87 Difference]: Start difference. First operand 4069 states and 10790 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:33,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:33,719 INFO L93 Difference]: Finished difference Result 5461 states and 14265 transitions. [2021-08-06 14:38:33,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-06 14:38:33,719 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:33,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:33,728 INFO L225 Difference]: With dead ends: 5461 [2021-08-06 14:38:33,728 INFO L226 Difference]: Without dead ends: 4771 [2021-08-06 14:38:33,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 151.1ms TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-08-06 14:38:33,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2021-08-06 14:38:33,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 4096. [2021-08-06 14:38:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4096 states, 4095 states have (on average 2.645177045177045) internal successors, (10832), 4095 states have internal predecessors, (10832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:33,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4096 states to 4096 states and 10832 transitions. [2021-08-06 14:38:33,793 INFO L78 Accepts]: Start accepts. Automaton has 4096 states and 10832 transitions. Word has length 48 [2021-08-06 14:38:33,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:33,793 INFO L470 AbstractCegarLoop]: Abstraction has 4096 states and 10832 transitions. [2021-08-06 14:38:33,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:33,794 INFO L276 IsEmpty]: Start isEmpty. Operand 4096 states and 10832 transitions. [2021-08-06 14:38:33,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:33,803 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:33,803 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, 1, 1] [2021-08-06 14:38:33,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-06 14:38:33,803 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:33,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:33,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1370634948, now seen corresponding path program 10 times [2021-08-06 14:38:33,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:33,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819289074] [2021-08-06 14:38:33,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:33,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:33,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:33,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:33,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819289074] [2021-08-06 14:38:33,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819289074] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:33,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:33,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 14:38:33,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279565037] [2021-08-06 14:38:33,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 14:38:33,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:33,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 14:38:33,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:33,940 INFO L87 Difference]: Start difference. First operand 4096 states and 10832 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:34,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:34,186 INFO L93 Difference]: Finished difference Result 5181 states and 13412 transitions. [2021-08-06 14:38:34,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 14:38:34,187 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:34,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:34,196 INFO L225 Difference]: With dead ends: 5181 [2021-08-06 14:38:34,196 INFO L226 Difference]: Without dead ends: 4981 [2021-08-06 14:38:34,196 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 46.7ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:34,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4981 states. [2021-08-06 14:38:34,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4981 to 4118. [2021-08-06 14:38:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4118 states, 4117 states have (on average 2.642458100558659) internal successors, (10879), 4117 states have internal predecessors, (10879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:34,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4118 states to 4118 states and 10879 transitions. [2021-08-06 14:38:34,257 INFO L78 Accepts]: Start accepts. Automaton has 4118 states and 10879 transitions. Word has length 48 [2021-08-06 14:38:34,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:34,258 INFO L470 AbstractCegarLoop]: Abstraction has 4118 states and 10879 transitions. [2021-08-06 14:38:34,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:34,258 INFO L276 IsEmpty]: Start isEmpty. Operand 4118 states and 10879 transitions. [2021-08-06 14:38:34,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:34,264 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:34,264 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, 1, 1] [2021-08-06 14:38:34,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-06 14:38:34,264 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:34,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:34,265 INFO L82 PathProgramCache]: Analyzing trace with hash -553975100, now seen corresponding path program 11 times [2021-08-06 14:38:34,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:34,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920936987] [2021-08-06 14:38:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:34,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:34,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:34,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:34,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920936987] [2021-08-06 14:38:34,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920936987] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:34,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:34,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 14:38:34,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052997275] [2021-08-06 14:38:34,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 14:38:34,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:34,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 14:38:34,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:34,453 INFO L87 Difference]: Start difference. First operand 4118 states and 10879 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:34,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:34,838 INFO L93 Difference]: Finished difference Result 8210 states and 22046 transitions. [2021-08-06 14:38:34,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:38:34,838 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:34,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:34,852 INFO L225 Difference]: With dead ends: 8210 [2021-08-06 14:38:34,852 INFO L226 Difference]: Without dead ends: 8154 [2021-08-06 14:38:34,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 204.8ms TimeCoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2021-08-06 14:38:34,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8154 states. [2021-08-06 14:38:34,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8154 to 5049. [2021-08-06 14:38:34,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5049 states, 5048 states have (on average 2.658082408874802) internal successors, (13418), 5048 states have internal predecessors, (13418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5049 states to 5049 states and 13418 transitions. [2021-08-06 14:38:34,948 INFO L78 Accepts]: Start accepts. Automaton has 5049 states and 13418 transitions. Word has length 48 [2021-08-06 14:38:34,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:34,948 INFO L470 AbstractCegarLoop]: Abstraction has 5049 states and 13418 transitions. [2021-08-06 14:38:34,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:34,949 INFO L276 IsEmpty]: Start isEmpty. Operand 5049 states and 13418 transitions. [2021-08-06 14:38:34,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:34,956 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:34,956 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, 1, 1] [2021-08-06 14:38:34,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-06 14:38:34,957 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:34,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:34,957 INFO L82 PathProgramCache]: Analyzing trace with hash 747293282, now seen corresponding path program 12 times [2021-08-06 14:38:34,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:34,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902795013] [2021-08-06 14:38:34,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:34,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:35,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:35,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:35,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902795013] [2021-08-06 14:38:35,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902795013] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:35,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:35,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 14:38:35,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317792984] [2021-08-06 14:38:35,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 14:38:35,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:35,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 14:38:35,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:35,097 INFO L87 Difference]: Start difference. First operand 5049 states and 13418 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:35,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:35,672 INFO L93 Difference]: Finished difference Result 11648 states and 30689 transitions. [2021-08-06 14:38:35,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-06 14:38:35,672 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:35,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:35,690 INFO L225 Difference]: With dead ends: 11648 [2021-08-06 14:38:35,690 INFO L226 Difference]: Without dead ends: 11150 [2021-08-06 14:38:35,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 249.3ms TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2021-08-06 14:38:35,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11150 states. [2021-08-06 14:38:35,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11150 to 5804. [2021-08-06 14:38:35,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5804 states, 5803 states have (on average 2.6551783560227467) internal successors, (15408), 5803 states have internal predecessors, (15408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:35,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5804 states to 5804 states and 15408 transitions. [2021-08-06 14:38:35,843 INFO L78 Accepts]: Start accepts. Automaton has 5804 states and 15408 transitions. Word has length 48 [2021-08-06 14:38:35,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:35,844 INFO L470 AbstractCegarLoop]: Abstraction has 5804 states and 15408 transitions. [2021-08-06 14:38:35,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:35,844 INFO L276 IsEmpty]: Start isEmpty. Operand 5804 states and 15408 transitions. [2021-08-06 14:38:35,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:35,852 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:35,852 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, 1, 1] [2021-08-06 14:38:35,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-06 14:38:35,853 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:35,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:35,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1347166720, now seen corresponding path program 13 times [2021-08-06 14:38:35,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:35,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943596850] [2021-08-06 14:38:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:35,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:36,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:36,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943596850] [2021-08-06 14:38:36,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943596850] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:36,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:36,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 14:38:36,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085511962] [2021-08-06 14:38:36,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 14:38:36,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:36,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 14:38:36,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:36,011 INFO L87 Difference]: Start difference. First operand 5804 states and 15408 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:36,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:36,401 INFO L93 Difference]: Finished difference Result 9870 states and 26315 transitions. [2021-08-06 14:38:36,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-06 14:38:36,401 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:36,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:36,418 INFO L225 Difference]: With dead ends: 9870 [2021-08-06 14:38:36,418 INFO L226 Difference]: Without dead ends: 9834 [2021-08-06 14:38:36,418 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 152.2ms TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2021-08-06 14:38:36,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9834 states. [2021-08-06 14:38:36,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9834 to 5331. [2021-08-06 14:38:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5331 states, 5330 states have (on average 2.646904315196998) internal successors, (14108), 5330 states have internal predecessors, (14108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5331 states to 5331 states and 14108 transitions. [2021-08-06 14:38:36,547 INFO L78 Accepts]: Start accepts. Automaton has 5331 states and 14108 transitions. Word has length 48 [2021-08-06 14:38:36,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:36,547 INFO L470 AbstractCegarLoop]: Abstraction has 5331 states and 14108 transitions. [2021-08-06 14:38:36,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:36,548 INFO L276 IsEmpty]: Start isEmpty. Operand 5331 states and 14108 transitions. [2021-08-06 14:38:36,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:36,555 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:36,555 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, 1, 1] [2021-08-06 14:38:36,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-06 14:38:36,556 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:36,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:36,556 INFO L82 PathProgramCache]: Analyzing trace with hash -45898338, now seen corresponding path program 14 times [2021-08-06 14:38:36,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:36,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476781096] [2021-08-06 14:38:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:36,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:36,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:36,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476781096] [2021-08-06 14:38:36,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476781096] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:36,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:36,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 14:38:36,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175671339] [2021-08-06 14:38:36,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 14:38:36,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:36,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 14:38:36,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:36,704 INFO L87 Difference]: Start difference. First operand 5331 states and 14108 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:37,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:37,164 INFO L93 Difference]: Finished difference Result 8998 states and 23221 transitions. [2021-08-06 14:38:37,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-06 14:38:37,165 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:37,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:37,177 INFO L225 Difference]: With dead ends: 8998 [2021-08-06 14:38:37,177 INFO L226 Difference]: Without dead ends: 8501 [2021-08-06 14:38:37,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 181.3ms TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-08-06 14:38:37,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8501 states. [2021-08-06 14:38:37,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8501 to 5351. [2021-08-06 14:38:37,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5351 states, 5350 states have (on average 2.6370093457943926) internal successors, (14108), 5350 states have internal predecessors, (14108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5351 states to 5351 states and 14108 transitions. [2021-08-06 14:38:37,300 INFO L78 Accepts]: Start accepts. Automaton has 5351 states and 14108 transitions. Word has length 48 [2021-08-06 14:38:37,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:37,300 INFO L470 AbstractCegarLoop]: Abstraction has 5351 states and 14108 transitions. [2021-08-06 14:38:37,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:37,300 INFO L276 IsEmpty]: Start isEmpty. Operand 5351 states and 14108 transitions. [2021-08-06 14:38:37,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:37,310 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:37,310 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, 1, 1] [2021-08-06 14:38:37,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-06 14:38:37,310 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:37,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:37,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1579103546, now seen corresponding path program 15 times [2021-08-06 14:38:37,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:37,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253274172] [2021-08-06 14:38:37,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:37,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:37,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:37,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:37,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253274172] [2021-08-06 14:38:37,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253274172] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:37,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:37,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-06 14:38:37,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129723779] [2021-08-06 14:38:37,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 14:38:37,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:37,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 14:38:37,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-08-06 14:38:37,444 INFO L87 Difference]: Start difference. First operand 5351 states and 14108 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:37,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:37,698 INFO L93 Difference]: Finished difference Result 6555 states and 17126 transitions. [2021-08-06 14:38:37,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 14:38:37,698 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:37,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:37,709 INFO L225 Difference]: With dead ends: 6555 [2021-08-06 14:38:37,709 INFO L226 Difference]: Without dead ends: 6445 [2021-08-06 14:38:37,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-08-06 14:38:37,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6445 states. [2021-08-06 14:38:37,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6445 to 5348. [2021-08-06 14:38:37,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5348 states, 5347 states have (on average 2.6364316439124744) internal successors, (14097), 5347 states have internal predecessors, (14097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5348 states to 5348 states and 14097 transitions. [2021-08-06 14:38:37,791 INFO L78 Accepts]: Start accepts. Automaton has 5348 states and 14097 transitions. Word has length 48 [2021-08-06 14:38:37,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:37,791 INFO L470 AbstractCegarLoop]: Abstraction has 5348 states and 14097 transitions. [2021-08-06 14:38:37,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:37,792 INFO L276 IsEmpty]: Start isEmpty. Operand 5348 states and 14097 transitions. [2021-08-06 14:38:37,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:37,798 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:37,798 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, 1, 1] [2021-08-06 14:38:37,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-06 14:38:37,798 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:37,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:37,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1293913202, now seen corresponding path program 16 times [2021-08-06 14:38:37,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:37,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291056097] [2021-08-06 14:38:37,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:37,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:37,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:37,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:37,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291056097] [2021-08-06 14:38:37,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291056097] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:37,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:37,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 14:38:37,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779404688] [2021-08-06 14:38:37,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 14:38:37,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:37,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 14:38:37,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:37,930 INFO L87 Difference]: Start difference. First operand 5348 states and 14097 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:38,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:38,165 INFO L93 Difference]: Finished difference Result 6530 states and 17001 transitions. [2021-08-06 14:38:38,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 14:38:38,165 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:38,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:38,173 INFO L225 Difference]: With dead ends: 6530 [2021-08-06 14:38:38,174 INFO L226 Difference]: Without dead ends: 6530 [2021-08-06 14:38:38,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 65.3ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-08-06 14:38:38,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6530 states. [2021-08-06 14:38:38,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6530 to 5760. [2021-08-06 14:38:38,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5760 states, 5759 states have (on average 2.6209411356138217) internal successors, (15094), 5759 states have internal predecessors, (15094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:38,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5760 states to 5760 states and 15094 transitions. [2021-08-06 14:38:38,266 INFO L78 Accepts]: Start accepts. Automaton has 5760 states and 15094 transitions. Word has length 48 [2021-08-06 14:38:38,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:38,266 INFO L470 AbstractCegarLoop]: Abstraction has 5760 states and 15094 transitions. [2021-08-06 14:38:38,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:38,267 INFO L276 IsEmpty]: Start isEmpty. Operand 5760 states and 15094 transitions. [2021-08-06 14:38:38,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:38,274 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:38,274 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, 1, 1] [2021-08-06 14:38:38,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-06 14:38:38,274 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:38,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:38,274 INFO L82 PathProgramCache]: Analyzing trace with hash -177172490, now seen corresponding path program 17 times [2021-08-06 14:38:38,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:38,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540795130] [2021-08-06 14:38:38,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:38,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:38,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:38,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540795130] [2021-08-06 14:38:38,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540795130] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:38,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:38,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-06 14:38:38,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841554169] [2021-08-06 14:38:38,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 14:38:38,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:38,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 14:38:38,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-08-06 14:38:38,411 INFO L87 Difference]: Start difference. First operand 5760 states and 15094 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:38,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:38,620 INFO L93 Difference]: Finished difference Result 6338 states and 16514 transitions. [2021-08-06 14:38:38,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 14:38:38,621 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:38,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:38,628 INFO L225 Difference]: With dead ends: 6338 [2021-08-06 14:38:38,628 INFO L226 Difference]: Without dead ends: 6338 [2021-08-06 14:38:38,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 52.9ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-08-06 14:38:38,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6338 states. [2021-08-06 14:38:38,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6338 to 5670. [2021-08-06 14:38:38,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5670 states, 5669 states have (on average 2.6198624095960485) internal successors, (14852), 5669 states have internal predecessors, (14852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:38,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 14852 transitions. [2021-08-06 14:38:38,696 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 14852 transitions. Word has length 48 [2021-08-06 14:38:38,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:38,696 INFO L470 AbstractCegarLoop]: Abstraction has 5670 states and 14852 transitions. [2021-08-06 14:38:38,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:38,697 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 14852 transitions. [2021-08-06 14:38:38,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:38,703 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:38,703 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, 1, 1] [2021-08-06 14:38:38,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-06 14:38:38,703 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:38,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:38,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1316938584, now seen corresponding path program 18 times [2021-08-06 14:38:38,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:38,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7965144] [2021-08-06 14:38:38,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:38,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:38,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:38,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:38,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7965144] [2021-08-06 14:38:38,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7965144] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:38,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:38,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-06 14:38:38,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377579035] [2021-08-06 14:38:38,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 14:38:38,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:38,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 14:38:38,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-08-06 14:38:38,824 INFO L87 Difference]: Start difference. First operand 5670 states and 14852 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:39,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:39,124 INFO L93 Difference]: Finished difference Result 6546 states and 16992 transitions. [2021-08-06 14:38:39,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 14:38:39,125 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:39,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:39,131 INFO L225 Difference]: With dead ends: 6546 [2021-08-06 14:38:39,131 INFO L226 Difference]: Without dead ends: 6321 [2021-08-06 14:38:39,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 85.2ms TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-08-06 14:38:39,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6321 states. [2021-08-06 14:38:39,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6321 to 5544. [2021-08-06 14:38:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5544 states, 5543 states have (on average 2.621143784953996) internal successors, (14529), 5543 states have internal predecessors, (14529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:39,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5544 states to 5544 states and 14529 transitions. [2021-08-06 14:38:39,198 INFO L78 Accepts]: Start accepts. Automaton has 5544 states and 14529 transitions. Word has length 48 [2021-08-06 14:38:39,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:39,198 INFO L470 AbstractCegarLoop]: Abstraction has 5544 states and 14529 transitions. [2021-08-06 14:38:39,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:39,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5544 states and 14529 transitions. [2021-08-06 14:38:39,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:39,204 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:39,204 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, 1, 1] [2021-08-06 14:38:39,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-06 14:38:39,205 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:39,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:39,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1828987838, now seen corresponding path program 19 times [2021-08-06 14:38:39,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:39,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189316514] [2021-08-06 14:38:39,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:39,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:39,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:39,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189316514] [2021-08-06 14:38:39,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189316514] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:39,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:39,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:39,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681212762] [2021-08-06 14:38:39,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:39,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:39,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:39,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:39,265 INFO L87 Difference]: Start difference. First operand 5544 states and 14529 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:39,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:39,390 INFO L93 Difference]: Finished difference Result 6928 states and 17758 transitions. [2021-08-06 14:38:39,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 14:38:39,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:39,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:39,397 INFO L225 Difference]: With dead ends: 6928 [2021-08-06 14:38:39,397 INFO L226 Difference]: Without dead ends: 6370 [2021-08-06 14:38:39,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 40.7ms TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2021-08-06 14:38:39,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6370 states. [2021-08-06 14:38:39,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6370 to 4622. [2021-08-06 14:38:39,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4622 states, 4621 states have (on average 2.566111231335209) internal successors, (11858), 4621 states have internal predecessors, (11858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:39,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4622 states to 4622 states and 11858 transitions. [2021-08-06 14:38:39,453 INFO L78 Accepts]: Start accepts. Automaton has 4622 states and 11858 transitions. Word has length 48 [2021-08-06 14:38:39,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:39,453 INFO L470 AbstractCegarLoop]: Abstraction has 4622 states and 11858 transitions. [2021-08-06 14:38:39,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:39,453 INFO L276 IsEmpty]: Start isEmpty. Operand 4622 states and 11858 transitions. [2021-08-06 14:38:39,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:39,458 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:39,459 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, 1, 1] [2021-08-06 14:38:39,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-06 14:38:39,459 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:39,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:39,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1131191936, now seen corresponding path program 20 times [2021-08-06 14:38:39,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:39,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080668387] [2021-08-06 14:38:39,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:39,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:39,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:39,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080668387] [2021-08-06 14:38:39,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080668387] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:39,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:39,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:39,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016249085] [2021-08-06 14:38:39,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:39,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:39,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:39,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:39,553 INFO L87 Difference]: Start difference. First operand 4622 states and 11858 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:39,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:39,755 INFO L93 Difference]: Finished difference Result 7191 states and 18346 transitions. [2021-08-06 14:38:39,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 14:38:39,756 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:39,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:39,765 INFO L225 Difference]: With dead ends: 7191 [2021-08-06 14:38:39,765 INFO L226 Difference]: Without dead ends: 7072 [2021-08-06 14:38:39,765 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 80.9ms TimeCoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2021-08-06 14:38:39,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7072 states. [2021-08-06 14:38:39,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7072 to 4582. [2021-08-06 14:38:39,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4582 states, 4581 states have (on average 2.5660336171141673) internal successors, (11755), 4581 states have internal predecessors, (11755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:39,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4582 states to 4582 states and 11755 transitions. [2021-08-06 14:38:39,849 INFO L78 Accepts]: Start accepts. Automaton has 4582 states and 11755 transitions. Word has length 48 [2021-08-06 14:38:39,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:39,849 INFO L470 AbstractCegarLoop]: Abstraction has 4582 states and 11755 transitions. [2021-08-06 14:38:39,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:39,849 INFO L276 IsEmpty]: Start isEmpty. Operand 4582 states and 11755 transitions. [2021-08-06 14:38:39,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:39,854 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:39,854 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, 1, 1] [2021-08-06 14:38:39,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-06 14:38:39,854 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:39,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:39,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1924383556, now seen corresponding path program 21 times [2021-08-06 14:38:39,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:39,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227861098] [2021-08-06 14:38:39,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:39,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:39,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:39,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:39,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227861098] [2021-08-06 14:38:39,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227861098] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:39,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:39,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:39,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736659024] [2021-08-06 14:38:39,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:39,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:39,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:39,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:39,956 INFO L87 Difference]: Start difference. First operand 4582 states and 11755 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:40,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:40,215 INFO L93 Difference]: Finished difference Result 6635 states and 16818 transitions. [2021-08-06 14:38:40,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 14:38:40,215 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:40,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:40,223 INFO L225 Difference]: With dead ends: 6635 [2021-08-06 14:38:40,224 INFO L226 Difference]: Without dead ends: 6505 [2021-08-06 14:38:40,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 106.9ms TimeCoverageRelationStatistics Valid=73, Invalid=109, Unknown=0, NotChecked=0, Total=182 [2021-08-06 14:38:40,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6505 states. [2021-08-06 14:38:40,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6505 to 4456. [2021-08-06 14:38:40,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 4455 states have (on average 2.5681257014590346) internal successors, (11441), 4455 states have internal predecessors, (11441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:40,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 11441 transitions. [2021-08-06 14:38:40,294 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 11441 transitions. Word has length 48 [2021-08-06 14:38:40,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:40,294 INFO L470 AbstractCegarLoop]: Abstraction has 4456 states and 11441 transitions. [2021-08-06 14:38:40,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:40,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 11441 transitions. [2021-08-06 14:38:40,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:40,299 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:40,299 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, 1, 1] [2021-08-06 14:38:40,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-06 14:38:40,299 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:40,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:40,299 INFO L82 PathProgramCache]: Analyzing trace with hash 459405858, now seen corresponding path program 22 times [2021-08-06 14:38:40,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:40,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419133047] [2021-08-06 14:38:40,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:40,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:40,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:40,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419133047] [2021-08-06 14:38:40,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419133047] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:40,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:40,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:40,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164337378] [2021-08-06 14:38:40,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:40,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:40,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:40,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:40,384 INFO L87 Difference]: Start difference. First operand 4456 states and 11441 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:40,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:40,693 INFO L93 Difference]: Finished difference Result 8820 states and 22452 transitions. [2021-08-06 14:38:40,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-06 14:38:40,694 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:40,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:40,705 INFO L225 Difference]: With dead ends: 8820 [2021-08-06 14:38:40,705 INFO L226 Difference]: Without dead ends: 8563 [2021-08-06 14:38:40,705 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 129.8ms TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-08-06 14:38:40,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8563 states. [2021-08-06 14:38:40,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8563 to 4297. [2021-08-06 14:38:40,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4297 states, 4296 states have (on average 2.5758845437616387) internal successors, (11066), 4296 states have internal predecessors, (11066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:40,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 11066 transitions. [2021-08-06 14:38:40,772 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 11066 transitions. Word has length 48 [2021-08-06 14:38:40,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:40,772 INFO L470 AbstractCegarLoop]: Abstraction has 4297 states and 11066 transitions. [2021-08-06 14:38:40,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:40,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 11066 transitions. [2021-08-06 14:38:40,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:40,776 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:40,776 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, 1, 1] [2021-08-06 14:38:40,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-06 14:38:40,776 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:40,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:40,777 INFO L82 PathProgramCache]: Analyzing trace with hash -594454732, now seen corresponding path program 23 times [2021-08-06 14:38:40,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:40,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081280698] [2021-08-06 14:38:40,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:40,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:40,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:40,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:40,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081280698] [2021-08-06 14:38:40,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081280698] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:40,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:40,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-06 14:38:40,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579743667] [2021-08-06 14:38:40,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 14:38:40,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:40,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 14:38:40,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-06 14:38:40,888 INFO L87 Difference]: Start difference. First operand 4297 states and 11066 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:41,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:41,169 INFO L93 Difference]: Finished difference Result 6214 states and 15820 transitions. [2021-08-06 14:38:41,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-06 14:38:41,170 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:41,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:41,178 INFO L225 Difference]: With dead ends: 6214 [2021-08-06 14:38:41,178 INFO L226 Difference]: Without dead ends: 5870 [2021-08-06 14:38:41,178 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 121.2ms TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-08-06 14:38:41,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5870 states. [2021-08-06 14:38:41,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5870 to 4538. [2021-08-06 14:38:41,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4538 states, 4537 states have (on average 2.586951730218206) internal successors, (11737), 4537 states have internal predecessors, (11737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:41,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4538 states to 4538 states and 11737 transitions. [2021-08-06 14:38:41,242 INFO L78 Accepts]: Start accepts. Automaton has 4538 states and 11737 transitions. Word has length 48 [2021-08-06 14:38:41,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:41,242 INFO L470 AbstractCegarLoop]: Abstraction has 4538 states and 11737 transitions. [2021-08-06 14:38:41,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:41,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4538 states and 11737 transitions. [2021-08-06 14:38:41,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:41,248 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:41,248 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, 1, 1] [2021-08-06 14:38:41,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-06 14:38:41,248 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:41,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:41,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1537564694, now seen corresponding path program 24 times [2021-08-06 14:38:41,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:41,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419232013] [2021-08-06 14:38:41,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:41,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:41,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:41,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419232013] [2021-08-06 14:38:41,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419232013] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:41,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:41,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 14:38:41,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485720816] [2021-08-06 14:38:41,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 14:38:41,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:41,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 14:38:41,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:41,356 INFO L87 Difference]: Start difference. First operand 4538 states and 11737 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:41,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:41,587 INFO L93 Difference]: Finished difference Result 5013 states and 12811 transitions. [2021-08-06 14:38:41,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 14:38:41,588 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:41,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:41,593 INFO L225 Difference]: With dead ends: 5013 [2021-08-06 14:38:41,593 INFO L226 Difference]: Without dead ends: 4694 [2021-08-06 14:38:41,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 67.8ms TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-08-06 14:38:41,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2021-08-06 14:38:41,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4393. [2021-08-06 14:38:41,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4393 states, 4392 states have (on average 2.5951730418943533) internal successors, (11398), 4392 states have internal predecessors, (11398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:41,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4393 states to 4393 states and 11398 transitions. [2021-08-06 14:38:41,644 INFO L78 Accepts]: Start accepts. Automaton has 4393 states and 11398 transitions. Word has length 48 [2021-08-06 14:38:41,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:41,644 INFO L470 AbstractCegarLoop]: Abstraction has 4393 states and 11398 transitions. [2021-08-06 14:38:41,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:41,645 INFO L276 IsEmpty]: Start isEmpty. Operand 4393 states and 11398 transitions. [2021-08-06 14:38:41,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:41,649 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:41,649 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, 1, 1] [2021-08-06 14:38:41,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-06 14:38:41,649 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:41,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:41,650 INFO L82 PathProgramCache]: Analyzing trace with hash -2024660160, now seen corresponding path program 25 times [2021-08-06 14:38:41,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:41,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676926164] [2021-08-06 14:38:41,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:41,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:41,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:41,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676926164] [2021-08-06 14:38:41,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676926164] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:41,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:41,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-06 14:38:41,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780576284] [2021-08-06 14:38:41,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 14:38:41,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:41,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 14:38:41,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 14:38:41,661 INFO L87 Difference]: Start difference. First operand 4393 states and 11398 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:41,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:41,673 INFO L93 Difference]: Finished difference Result 4113 states and 10353 transitions. [2021-08-06 14:38:41,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 14:38:41,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:41,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:41,677 INFO L225 Difference]: With dead ends: 4113 [2021-08-06 14:38:41,677 INFO L226 Difference]: Without dead ends: 4113 [2021-08-06 14:38:41,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 14:38:41,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4113 states. [2021-08-06 14:38:41,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4113 to 4015. [2021-08-06 14:38:41,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4015 states, 4014 states have (on average 2.521175884404584) internal successors, (10120), 4014 states have internal predecessors, (10120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:41,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4015 states to 4015 states and 10120 transitions. [2021-08-06 14:38:41,722 INFO L78 Accepts]: Start accepts. Automaton has 4015 states and 10120 transitions. Word has length 48 [2021-08-06 14:38:41,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:41,722 INFO L470 AbstractCegarLoop]: Abstraction has 4015 states and 10120 transitions. [2021-08-06 14:38:41,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:41,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4015 states and 10120 transitions. [2021-08-06 14:38:41,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:41,727 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:41,727 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, 1, 1] [2021-08-06 14:38:41,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-06 14:38:41,728 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:41,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:41,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1090180448, now seen corresponding path program 26 times [2021-08-06 14:38:41,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:41,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555322278] [2021-08-06 14:38:41,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:41,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:41,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:41,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:41,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555322278] [2021-08-06 14:38:41,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555322278] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:41,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:41,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:41,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909900893] [2021-08-06 14:38:41,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:41,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:41,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:41,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:41,792 INFO L87 Difference]: Start difference. First operand 4015 states and 10120 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:41,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:41,901 INFO L93 Difference]: Finished difference Result 4577 states and 11379 transitions. [2021-08-06 14:38:41,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 14:38:41,902 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:41,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:41,907 INFO L225 Difference]: With dead ends: 4577 [2021-08-06 14:38:41,907 INFO L226 Difference]: Without dead ends: 4237 [2021-08-06 14:38:41,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 87.8ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-08-06 14:38:41,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4237 states. [2021-08-06 14:38:41,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4237 to 3927. [2021-08-06 14:38:41,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3927 states, 3926 states have (on average 2.5061130922058075) internal successors, (9839), 3926 states have internal predecessors, (9839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:41,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 9839 transitions. [2021-08-06 14:38:41,955 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 9839 transitions. Word has length 48 [2021-08-06 14:38:41,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:41,955 INFO L470 AbstractCegarLoop]: Abstraction has 3927 states and 9839 transitions. [2021-08-06 14:38:41,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 9839 transitions. [2021-08-06 14:38:41,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:41,960 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:41,960 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, 1, 1] [2021-08-06 14:38:41,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-06 14:38:41,961 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:41,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:41,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1509006252, now seen corresponding path program 27 times [2021-08-06 14:38:41,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:41,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221323553] [2021-08-06 14:38:41,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:41,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:42,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:42,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:42,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221323553] [2021-08-06 14:38:42,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221323553] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:42,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:42,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 14:38:42,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920423477] [2021-08-06 14:38:42,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 14:38:42,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:42,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 14:38:42,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:42,066 INFO L87 Difference]: Start difference. First operand 3927 states and 9839 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:42,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:42,310 INFO L93 Difference]: Finished difference Result 5865 states and 14506 transitions. [2021-08-06 14:38:42,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-06 14:38:42,310 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:42,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:42,317 INFO L225 Difference]: With dead ends: 5865 [2021-08-06 14:38:42,317 INFO L226 Difference]: Without dead ends: 5707 [2021-08-06 14:38:42,317 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 89.5ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-08-06 14:38:42,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states. [2021-08-06 14:38:42,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 3945. [2021-08-06 14:38:42,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3945 states, 3944 states have (on average 2.5045638945233266) internal successors, (9878), 3944 states have internal predecessors, (9878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:42,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3945 states to 3945 states and 9878 transitions. [2021-08-06 14:38:42,365 INFO L78 Accepts]: Start accepts. Automaton has 3945 states and 9878 transitions. Word has length 48 [2021-08-06 14:38:42,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:42,366 INFO L470 AbstractCegarLoop]: Abstraction has 3945 states and 9878 transitions. [2021-08-06 14:38:42,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:42,366 INFO L276 IsEmpty]: Start isEmpty. Operand 3945 states and 9878 transitions. [2021-08-06 14:38:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:42,370 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:42,370 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, 1, 1] [2021-08-06 14:38:42,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-06 14:38:42,370 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:42,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:42,370 INFO L82 PathProgramCache]: Analyzing trace with hash -804386332, now seen corresponding path program 28 times [2021-08-06 14:38:42,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:42,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10641924] [2021-08-06 14:38:42,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:42,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:42,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:42,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10641924] [2021-08-06 14:38:42,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10641924] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:42,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:42,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 14:38:42,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536489687] [2021-08-06 14:38:42,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 14:38:42,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:42,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 14:38:42,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:42,461 INFO L87 Difference]: Start difference. First operand 3945 states and 9878 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:42,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:42,609 INFO L93 Difference]: Finished difference Result 5688 states and 14152 transitions. [2021-08-06 14:38:42,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 14:38:42,609 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:42,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:42,616 INFO L225 Difference]: With dead ends: 5688 [2021-08-06 14:38:42,616 INFO L226 Difference]: Without dead ends: 5624 [2021-08-06 14:38:42,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:42,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5624 states. [2021-08-06 14:38:42,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5624 to 4396. [2021-08-06 14:38:42,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4396 states, 4395 states have (on average 2.502844141069397) internal successors, (11000), 4395 states have internal predecessors, (11000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:42,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 11000 transitions. [2021-08-06 14:38:42,673 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 11000 transitions. Word has length 48 [2021-08-06 14:38:42,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:42,673 INFO L470 AbstractCegarLoop]: Abstraction has 4396 states and 11000 transitions. [2021-08-06 14:38:42,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:42,673 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 11000 transitions. [2021-08-06 14:38:42,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:42,677 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:42,677 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, 1, 1] [2021-08-06 14:38:42,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-06 14:38:42,677 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:42,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:42,677 INFO L82 PathProgramCache]: Analyzing trace with hash -946264830, now seen corresponding path program 29 times [2021-08-06 14:38:42,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:42,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605946926] [2021-08-06 14:38:42,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:42,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:42,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:42,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605946926] [2021-08-06 14:38:42,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605946926] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:42,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:42,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 14:38:42,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104922996] [2021-08-06 14:38:42,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 14:38:42,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:42,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 14:38:42,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:42,769 INFO L87 Difference]: Start difference. First operand 4396 states and 11000 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:42,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:42,898 INFO L93 Difference]: Finished difference Result 4970 states and 12312 transitions. [2021-08-06 14:38:42,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 14:38:42,898 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:42,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:42,904 INFO L225 Difference]: With dead ends: 4970 [2021-08-06 14:38:42,904 INFO L226 Difference]: Without dead ends: 4772 [2021-08-06 14:38:42,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 42.9ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:42,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4772 states. [2021-08-06 14:38:42,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4772 to 4223. [2021-08-06 14:38:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4223 states, 4222 states have (on average 2.5035528185693985) internal successors, (10570), 4222 states have internal predecessors, (10570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4223 states to 4223 states and 10570 transitions. [2021-08-06 14:38:42,956 INFO L78 Accepts]: Start accepts. Automaton has 4223 states and 10570 transitions. Word has length 48 [2021-08-06 14:38:42,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:42,956 INFO L470 AbstractCegarLoop]: Abstraction has 4223 states and 10570 transitions. [2021-08-06 14:38:42,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:42,956 INFO L276 IsEmpty]: Start isEmpty. Operand 4223 states and 10570 transitions. [2021-08-06 14:38:42,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:42,960 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:42,960 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, 1, 1] [2021-08-06 14:38:42,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-06 14:38:42,961 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:42,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:42,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1768785176, now seen corresponding path program 30 times [2021-08-06 14:38:42,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:42,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163653994] [2021-08-06 14:38:42,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:42,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:43,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:43,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:43,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163653994] [2021-08-06 14:38:43,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163653994] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:43,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:43,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:43,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81038606] [2021-08-06 14:38:43,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:43,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:43,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:43,029 INFO L87 Difference]: Start difference. First operand 4223 states and 10570 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:43,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:43,171 INFO L93 Difference]: Finished difference Result 4559 states and 11282 transitions. [2021-08-06 14:38:43,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 14:38:43,171 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:43,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:43,176 INFO L225 Difference]: With dead ends: 4559 [2021-08-06 14:38:43,176 INFO L226 Difference]: Without dead ends: 4465 [2021-08-06 14:38:43,176 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 118.7ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-08-06 14:38:43,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4465 states. [2021-08-06 14:38:43,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4465 to 4203. [2021-08-06 14:38:43,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4203 states, 4202 states have (on average 2.498810090433127) internal successors, (10500), 4202 states have internal predecessors, (10500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:43,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4203 states to 4203 states and 10500 transitions. [2021-08-06 14:38:43,218 INFO L78 Accepts]: Start accepts. Automaton has 4203 states and 10500 transitions. Word has length 48 [2021-08-06 14:38:43,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:43,219 INFO L470 AbstractCegarLoop]: Abstraction has 4203 states and 10500 transitions. [2021-08-06 14:38:43,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:43,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4203 states and 10500 transitions. [2021-08-06 14:38:43,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:43,222 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:43,223 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, 1, 1] [2021-08-06 14:38:43,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-06 14:38:43,223 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:43,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:43,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1173595316, now seen corresponding path program 31 times [2021-08-06 14:38:43,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:43,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127171203] [2021-08-06 14:38:43,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:43,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:43,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:43,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127171203] [2021-08-06 14:38:43,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127171203] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:43,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:43,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 14:38:43,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968023289] [2021-08-06 14:38:43,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 14:38:43,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:43,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 14:38:43,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:43,310 INFO L87 Difference]: Start difference. First operand 4203 states and 10500 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:43,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:43,458 INFO L93 Difference]: Finished difference Result 4464 states and 11024 transitions. [2021-08-06 14:38:43,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 14:38:43,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:43,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:43,464 INFO L225 Difference]: With dead ends: 4464 [2021-08-06 14:38:43,465 INFO L226 Difference]: Without dead ends: 4402 [2021-08-06 14:38:43,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 52.8ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:43,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4402 states. [2021-08-06 14:38:43,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4402 to 4152. [2021-08-06 14:38:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4152 states, 4151 states have (on average 2.488075162611419) internal successors, (10328), 4151 states have internal predecessors, (10328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:43,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4152 states to 4152 states and 10328 transitions. [2021-08-06 14:38:43,519 INFO L78 Accepts]: Start accepts. Automaton has 4152 states and 10328 transitions. Word has length 48 [2021-08-06 14:38:43,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:43,519 INFO L470 AbstractCegarLoop]: Abstraction has 4152 states and 10328 transitions. [2021-08-06 14:38:43,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:43,519 INFO L276 IsEmpty]: Start isEmpty. Operand 4152 states and 10328 transitions. [2021-08-06 14:38:43,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:43,523 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:43,523 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, 1, 1] [2021-08-06 14:38:43,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-06 14:38:43,524 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:43,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:43,524 INFO L82 PathProgramCache]: Analyzing trace with hash 648632194, now seen corresponding path program 32 times [2021-08-06 14:38:43,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:43,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058690766] [2021-08-06 14:38:43,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:43,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:43,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:43,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058690766] [2021-08-06 14:38:43,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058690766] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:43,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:43,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 14:38:43,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583127510] [2021-08-06 14:38:43,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 14:38:43,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:43,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 14:38:43,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:43,611 INFO L87 Difference]: Start difference. First operand 4152 states and 10328 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:43,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:43,722 INFO L93 Difference]: Finished difference Result 4626 states and 11385 transitions. [2021-08-06 14:38:43,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 14:38:43,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:43,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:43,728 INFO L225 Difference]: With dead ends: 4626 [2021-08-06 14:38:43,728 INFO L226 Difference]: Without dead ends: 4558 [2021-08-06 14:38:43,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 45.9ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:43,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4558 states. [2021-08-06 14:38:43,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4558 to 4084. [2021-08-06 14:38:43,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4084 states, 4083 states have (on average 2.4839578741121726) internal successors, (10142), 4083 states have internal predecessors, (10142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:43,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4084 states to 4084 states and 10142 transitions. [2021-08-06 14:38:43,774 INFO L78 Accepts]: Start accepts. Automaton has 4084 states and 10142 transitions. Word has length 48 [2021-08-06 14:38:43,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:43,774 INFO L470 AbstractCegarLoop]: Abstraction has 4084 states and 10142 transitions. [2021-08-06 14:38:43,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:43,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4084 states and 10142 transitions. [2021-08-06 14:38:43,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:43,778 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:43,778 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, 1, 1] [2021-08-06 14:38:43,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-06 14:38:43,778 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:43,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:43,779 INFO L82 PathProgramCache]: Analyzing trace with hash 506753696, now seen corresponding path program 33 times [2021-08-06 14:38:43,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:43,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627794547] [2021-08-06 14:38:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:43,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:43,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:43,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627794547] [2021-08-06 14:38:43,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627794547] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:43,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:43,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 14:38:43,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181112792] [2021-08-06 14:38:43,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 14:38:43,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:43,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 14:38:43,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:43,865 INFO L87 Difference]: Start difference. First operand 4084 states and 10142 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:43,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:43,993 INFO L93 Difference]: Finished difference Result 4226 states and 10330 transitions. [2021-08-06 14:38:43,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 14:38:43,993 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:43,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:43,997 INFO L225 Difference]: With dead ends: 4226 [2021-08-06 14:38:43,998 INFO L226 Difference]: Without dead ends: 4031 [2021-08-06 14:38:43,998 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:44,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2021-08-06 14:38:44,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 3223. [2021-08-06 14:38:44,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 3222 states have (on average 2.4720670391061454) internal successors, (7965), 3222 states have internal predecessors, (7965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:44,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 7965 transitions. [2021-08-06 14:38:44,035 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 7965 transitions. Word has length 48 [2021-08-06 14:38:44,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:44,035 INFO L470 AbstractCegarLoop]: Abstraction has 3223 states and 7965 transitions. [2021-08-06 14:38:44,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:44,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 7965 transitions. [2021-08-06 14:38:44,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:44,038 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:44,038 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, 1, 1] [2021-08-06 14:38:44,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-06 14:38:44,038 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:44,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:44,039 INFO L82 PathProgramCache]: Analyzing trace with hash -228992076, now seen corresponding path program 34 times [2021-08-06 14:38:44,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:44,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020619295] [2021-08-06 14:38:44,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:44,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:44,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:44,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:44,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020619295] [2021-08-06 14:38:44,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020619295] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:44,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:44,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 14:38:44,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184039203] [2021-08-06 14:38:44,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 14:38:44,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:44,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 14:38:44,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:44,116 INFO L87 Difference]: Start difference. First operand 3223 states and 7965 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:44,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:44,239 INFO L93 Difference]: Finished difference Result 4115 states and 10071 transitions. [2021-08-06 14:38:44,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 14:38:44,239 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:44,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:44,243 INFO L225 Difference]: With dead ends: 4115 [2021-08-06 14:38:44,243 INFO L226 Difference]: Without dead ends: 4056 [2021-08-06 14:38:44,243 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 30.9ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:44,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4056 states. [2021-08-06 14:38:44,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4056 to 3212. [2021-08-06 14:38:44,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3212 states, 3211 states have (on average 2.4699470569915913) internal successors, (7931), 3211 states have internal predecessors, (7931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3212 states to 3212 states and 7931 transitions. [2021-08-06 14:38:44,275 INFO L78 Accepts]: Start accepts. Automaton has 3212 states and 7931 transitions. Word has length 48 [2021-08-06 14:38:44,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:44,275 INFO L470 AbstractCegarLoop]: Abstraction has 3212 states and 7931 transitions. [2021-08-06 14:38:44,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:44,275 INFO L276 IsEmpty]: Start isEmpty. Operand 3212 states and 7931 transitions. [2021-08-06 14:38:44,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:44,278 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:44,278 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, 1, 1] [2021-08-06 14:38:44,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-06 14:38:44,278 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:44,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:44,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1887273988, now seen corresponding path program 35 times [2021-08-06 14:38:44,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:44,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31746726] [2021-08-06 14:38:44,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:44,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:44,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:44,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:44,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31746726] [2021-08-06 14:38:44,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31746726] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:44,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:44,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:44,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118810427] [2021-08-06 14:38:44,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:44,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:44,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:44,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:44,340 INFO L87 Difference]: Start difference. First operand 3212 states and 7931 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:44,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:44,454 INFO L93 Difference]: Finished difference Result 3615 states and 8816 transitions. [2021-08-06 14:38:44,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 14:38:44,455 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:44,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:44,459 INFO L225 Difference]: With dead ends: 3615 [2021-08-06 14:38:44,459 INFO L226 Difference]: Without dead ends: 3320 [2021-08-06 14:38:44,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 91.8ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-08-06 14:38:44,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2021-08-06 14:38:44,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 3097. [2021-08-06 14:38:44,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3097 states, 3096 states have (on average 2.452196382428941) internal successors, (7592), 3096 states have internal predecessors, (7592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:44,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 7592 transitions. [2021-08-06 14:38:44,487 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 7592 transitions. Word has length 48 [2021-08-06 14:38:44,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:44,487 INFO L470 AbstractCegarLoop]: Abstraction has 3097 states and 7592 transitions. [2021-08-06 14:38:44,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:44,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 7592 transitions. [2021-08-06 14:38:44,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:44,490 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:44,490 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, 1, 1] [2021-08-06 14:38:44,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-06 14:38:44,491 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:44,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:44,491 INFO L82 PathProgramCache]: Analyzing trace with hash 2093953770, now seen corresponding path program 36 times [2021-08-06 14:38:44,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:44,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508865189] [2021-08-06 14:38:44,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:44,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:44,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:44,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:44,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508865189] [2021-08-06 14:38:44,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508865189] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:44,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:44,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 14:38:44,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672385596] [2021-08-06 14:38:44,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 14:38:44,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:44,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 14:38:44,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:44,580 INFO L87 Difference]: Start difference. First operand 3097 states and 7592 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:44,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:44,826 INFO L93 Difference]: Finished difference Result 5084 states and 12138 transitions. [2021-08-06 14:38:44,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 14:38:44,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:44,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:44,831 INFO L225 Difference]: With dead ends: 5084 [2021-08-06 14:38:44,831 INFO L226 Difference]: Without dead ends: 4743 [2021-08-06 14:38:44,831 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 117.9ms TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2021-08-06 14:38:44,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4743 states. [2021-08-06 14:38:44,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4743 to 3467. [2021-08-06 14:38:44,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3467 states, 3466 states have (on average 2.4258511252163877) internal successors, (8408), 3466 states have internal predecessors, (8408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:44,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3467 states to 3467 states and 8408 transitions. [2021-08-06 14:38:44,869 INFO L78 Accepts]: Start accepts. Automaton has 3467 states and 8408 transitions. Word has length 48 [2021-08-06 14:38:44,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:44,869 INFO L470 AbstractCegarLoop]: Abstraction has 3467 states and 8408 transitions. [2021-08-06 14:38:44,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:44,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3467 states and 8408 transitions. [2021-08-06 14:38:44,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:44,872 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:44,873 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, 1, 1] [2021-08-06 14:38:44,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-06 14:38:44,873 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:44,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:44,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1544148968, now seen corresponding path program 37 times [2021-08-06 14:38:44,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:44,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214713572] [2021-08-06 14:38:44,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:44,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:44,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:44,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214713572] [2021-08-06 14:38:44,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214713572] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:44,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:44,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 14:38:44,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392777374] [2021-08-06 14:38:44,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 14:38:44,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:44,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 14:38:44,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-06 14:38:44,958 INFO L87 Difference]: Start difference. First operand 3467 states and 8408 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:45,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:45,051 INFO L93 Difference]: Finished difference Result 3716 states and 8981 transitions. [2021-08-06 14:38:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-06 14:38:45,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:45,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:45,055 INFO L225 Difference]: With dead ends: 3716 [2021-08-06 14:38:45,055 INFO L226 Difference]: Without dead ends: 3587 [2021-08-06 14:38:45,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 26.0ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-06 14:38:45,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3587 states. [2021-08-06 14:38:45,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3587 to 3455. [2021-08-06 14:38:45,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3455 states, 3454 states have (on average 2.4253039953676896) internal successors, (8377), 3454 states have internal predecessors, (8377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:45,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3455 states to 3455 states and 8377 transitions. [2021-08-06 14:38:45,090 INFO L78 Accepts]: Start accepts. Automaton has 3455 states and 8377 transitions. Word has length 48 [2021-08-06 14:38:45,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:45,090 INFO L470 AbstractCegarLoop]: Abstraction has 3455 states and 8377 transitions. [2021-08-06 14:38:45,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:45,090 INFO L276 IsEmpty]: Start isEmpty. Operand 3455 states and 8377 transitions. [2021-08-06 14:38:45,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:45,093 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:45,093 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, 1, 1] [2021-08-06 14:38:45,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-06 14:38:45,093 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:45,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:45,094 INFO L82 PathProgramCache]: Analyzing trace with hash -82170110, now seen corresponding path program 38 times [2021-08-06 14:38:45,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:45,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093173078] [2021-08-06 14:38:45,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:45,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:45,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:45,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:45,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093173078] [2021-08-06 14:38:45,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093173078] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:45,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:45,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 14:38:45,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206820062] [2021-08-06 14:38:45,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 14:38:45,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:45,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 14:38:45,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:45,176 INFO L87 Difference]: Start difference. First operand 3455 states and 8377 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:45,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:45,273 INFO L93 Difference]: Finished difference Result 3991 states and 9597 transitions. [2021-08-06 14:38:45,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 14:38:45,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:45,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:45,278 INFO L225 Difference]: With dead ends: 3991 [2021-08-06 14:38:45,278 INFO L226 Difference]: Without dead ends: 3778 [2021-08-06 14:38:45,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:45,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2021-08-06 14:38:45,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3214. [2021-08-06 14:38:45,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3214 states, 3213 states have (on average 2.415188297541239) internal successors, (7760), 3213 states have internal predecessors, (7760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:45,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 7760 transitions. [2021-08-06 14:38:45,309 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 7760 transitions. Word has length 48 [2021-08-06 14:38:45,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:45,309 INFO L470 AbstractCegarLoop]: Abstraction has 3214 states and 7760 transitions. [2021-08-06 14:38:45,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:45,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 7760 transitions. [2021-08-06 14:38:45,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:45,312 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:45,312 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, 1, 1] [2021-08-06 14:38:45,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-06 14:38:45,312 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:45,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:45,313 INFO L82 PathProgramCache]: Analyzing trace with hash -631974912, now seen corresponding path program 39 times [2021-08-06 14:38:45,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:45,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894053210] [2021-08-06 14:38:45,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:45,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:45,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:45,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894053210] [2021-08-06 14:38:45,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894053210] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:45,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:45,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:45,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261514181] [2021-08-06 14:38:45,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:45,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:45,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:45,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:45,468 INFO L87 Difference]: Start difference. First operand 3214 states and 7760 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:45,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:45,625 INFO L93 Difference]: Finished difference Result 3343 states and 8038 transitions. [2021-08-06 14:38:45,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 14:38:45,625 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:45,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:45,629 INFO L225 Difference]: With dead ends: 3343 [2021-08-06 14:38:45,629 INFO L226 Difference]: Without dead ends: 3161 [2021-08-06 14:38:45,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 85.2ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-08-06 14:38:45,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2021-08-06 14:38:45,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 3159. [2021-08-06 14:38:45,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3159 states, 3158 states have (on average 2.414819506016466) internal successors, (7626), 3158 states have internal predecessors, (7626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:45,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 7626 transitions. [2021-08-06 14:38:45,665 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 7626 transitions. Word has length 48 [2021-08-06 14:38:45,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:45,665 INFO L470 AbstractCegarLoop]: Abstraction has 3159 states and 7626 transitions. [2021-08-06 14:38:45,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:45,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 7626 transitions. [2021-08-06 14:38:45,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:45,669 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:45,670 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:38:45,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-06 14:38:45,670 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:45,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:45,670 INFO L82 PathProgramCache]: Analyzing trace with hash 115076142, now seen corresponding path program 40 times [2021-08-06 14:38:45,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:45,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109299671] [2021-08-06 14:38:45,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:45,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:45,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:45,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:45,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109299671] [2021-08-06 14:38:45,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109299671] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:45,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:45,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 14:38:45,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145550300] [2021-08-06 14:38:45,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 14:38:45,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:45,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 14:38:45,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-06 14:38:45,764 INFO L87 Difference]: Start difference. First operand 3159 states and 7626 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:45,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:45,899 INFO L93 Difference]: Finished difference Result 3374 states and 7993 transitions. [2021-08-06 14:38:45,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 14:38:45,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:45,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:45,904 INFO L225 Difference]: With dead ends: 3374 [2021-08-06 14:38:45,904 INFO L226 Difference]: Without dead ends: 3066 [2021-08-06 14:38:45,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:45,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2021-08-06 14:38:45,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 2850. [2021-08-06 14:38:45,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 2849 states have (on average 2.4082134082134083) internal successors, (6861), 2849 states have internal predecessors, (6861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:45,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 6861 transitions. [2021-08-06 14:38:45,939 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 6861 transitions. Word has length 48 [2021-08-06 14:38:45,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:45,939 INFO L470 AbstractCegarLoop]: Abstraction has 2850 states and 6861 transitions. [2021-08-06 14:38:45,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:45,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 6861 transitions. [2021-08-06 14:38:45,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:45,943 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:45,943 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, 1, 1] [2021-08-06 14:38:45,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-06 14:38:45,943 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:45,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:45,943 INFO L82 PathProgramCache]: Analyzing trace with hash -68059828, now seen corresponding path program 41 times [2021-08-06 14:38:45,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:45,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883468182] [2021-08-06 14:38:45,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:45,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:46,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:46,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883468182] [2021-08-06 14:38:46,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883468182] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:46,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:46,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 14:38:46,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672213452] [2021-08-06 14:38:46,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 14:38:46,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:46,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 14:38:46,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:46,081 INFO L87 Difference]: Start difference. First operand 2850 states and 6861 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:46,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:46,664 INFO L93 Difference]: Finished difference Result 3813 states and 9024 transitions. [2021-08-06 14:38:46,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-06 14:38:46,665 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:46,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:46,669 INFO L225 Difference]: With dead ends: 3813 [2021-08-06 14:38:46,669 INFO L226 Difference]: Without dead ends: 3585 [2021-08-06 14:38:46,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 367.3ms TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:38:46,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2021-08-06 14:38:46,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 2967. [2021-08-06 14:38:46,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2966 states have (on average 2.3961564396493595) internal successors, (7107), 2966 states have internal predecessors, (7107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:46,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 7107 transitions. [2021-08-06 14:38:46,699 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 7107 transitions. Word has length 48 [2021-08-06 14:38:46,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:46,699 INFO L470 AbstractCegarLoop]: Abstraction has 2967 states and 7107 transitions. [2021-08-06 14:38:46,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:46,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 7107 transitions. [2021-08-06 14:38:46,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:46,701 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:46,701 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, 1, 1] [2021-08-06 14:38:46,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-06 14:38:46,701 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:46,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:46,702 INFO L82 PathProgramCache]: Analyzing trace with hash -530234322, now seen corresponding path program 42 times [2021-08-06 14:38:46,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:46,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497950218] [2021-08-06 14:38:46,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:46,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:46,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:46,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497950218] [2021-08-06 14:38:46,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497950218] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:46,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:46,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 14:38:46,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787516032] [2021-08-06 14:38:46,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 14:38:46,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:46,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 14:38:46,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:46,811 INFO L87 Difference]: Start difference. First operand 2967 states and 7107 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:46,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:46,897 INFO L93 Difference]: Finished difference Result 3085 states and 7351 transitions. [2021-08-06 14:38:46,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 14:38:46,898 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:46,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:46,901 INFO L225 Difference]: With dead ends: 3085 [2021-08-06 14:38:46,901 INFO L226 Difference]: Without dead ends: 2959 [2021-08-06 14:38:46,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 39.6ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:46,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2021-08-06 14:38:46,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 2955. [2021-08-06 14:38:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2954 states have (on average 2.3974272173324307) internal successors, (7082), 2954 states have internal predecessors, (7082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:46,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 7082 transitions. [2021-08-06 14:38:46,925 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 7082 transitions. Word has length 48 [2021-08-06 14:38:46,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:46,926 INFO L470 AbstractCegarLoop]: Abstraction has 2955 states and 7082 transitions. [2021-08-06 14:38:46,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:46,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 7082 transitions. [2021-08-06 14:38:46,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:46,928 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:46,928 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, 1, 1] [2021-08-06 14:38:46,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-06 14:38:46,928 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:46,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:46,929 INFO L82 PathProgramCache]: Analyzing trace with hash -709714664, now seen corresponding path program 43 times [2021-08-06 14:38:46,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:46,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541192239] [2021-08-06 14:38:46,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:46,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:47,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:47,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541192239] [2021-08-06 14:38:47,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541192239] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:47,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:47,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:47,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628520578] [2021-08-06 14:38:47,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:47,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:47,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:47,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:47,003 INFO L87 Difference]: Start difference. First operand 2955 states and 7082 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:47,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:47,120 INFO L93 Difference]: Finished difference Result 3143 states and 7454 transitions. [2021-08-06 14:38:47,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 14:38:47,121 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:47,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:47,123 INFO L225 Difference]: With dead ends: 3143 [2021-08-06 14:38:47,123 INFO L226 Difference]: Without dead ends: 2650 [2021-08-06 14:38:47,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 93.2ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-08-06 14:38:47,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2021-08-06 14:38:47,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 2491. [2021-08-06 14:38:47,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2491 states, 2490 states have (on average 2.3710843373493975) internal successors, (5904), 2490 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:47,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2491 states to 2491 states and 5904 transitions. [2021-08-06 14:38:47,145 INFO L78 Accepts]: Start accepts. Automaton has 2491 states and 5904 transitions. Word has length 48 [2021-08-06 14:38:47,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:47,145 INFO L470 AbstractCegarLoop]: Abstraction has 2491 states and 5904 transitions. [2021-08-06 14:38:47,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:47,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2491 states and 5904 transitions. [2021-08-06 14:38:47,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:47,147 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:47,147 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, 1, 1] [2021-08-06 14:38:47,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-06 14:38:47,147 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:47,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:47,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1009918126, now seen corresponding path program 44 times [2021-08-06 14:38:47,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:47,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339391392] [2021-08-06 14:38:47,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:47,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:47,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:47,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:47,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339391392] [2021-08-06 14:38:47,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339391392] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:47,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:47,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:47,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418640768] [2021-08-06 14:38:47,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:47,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:47,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:47,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:47,217 INFO L87 Difference]: Start difference. First operand 2491 states and 5904 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:47,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:47,363 INFO L93 Difference]: Finished difference Result 3707 states and 8669 transitions. [2021-08-06 14:38:47,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 14:38:47,364 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:47,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:47,368 INFO L225 Difference]: With dead ends: 3707 [2021-08-06 14:38:47,368 INFO L226 Difference]: Without dead ends: 3221 [2021-08-06 14:38:47,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 61.7ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-08-06 14:38:47,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3221 states. [2021-08-06 14:38:47,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3221 to 2398. [2021-08-06 14:38:47,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2397 states have (on average 2.3341677096370463) internal successors, (5595), 2397 states have internal predecessors, (5595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:47,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 5595 transitions. [2021-08-06 14:38:47,394 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 5595 transitions. Word has length 48 [2021-08-06 14:38:47,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:47,394 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 5595 transitions. [2021-08-06 14:38:47,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:47,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 5595 transitions. [2021-08-06 14:38:47,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:47,397 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:47,397 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, 1, 1] [2021-08-06 14:38:47,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-06 14:38:47,397 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:47,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:47,398 INFO L82 PathProgramCache]: Analyzing trace with hash 689438834, now seen corresponding path program 45 times [2021-08-06 14:38:47,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:47,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757445563] [2021-08-06 14:38:47,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:47,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:47,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:47,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:47,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757445563] [2021-08-06 14:38:47,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757445563] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:47,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:47,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 14:38:47,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246600760] [2021-08-06 14:38:47,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 14:38:47,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:47,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 14:38:47,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-06 14:38:47,548 INFO L87 Difference]: Start difference. First operand 2398 states and 5595 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:47,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:47,674 INFO L93 Difference]: Finished difference Result 2961 states and 6858 transitions. [2021-08-06 14:38:47,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 14:38:47,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:47,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:47,677 INFO L225 Difference]: With dead ends: 2961 [2021-08-06 14:38:47,677 INFO L226 Difference]: Without dead ends: 2762 [2021-08-06 14:38:47,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 45.1ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:47,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2021-08-06 14:38:47,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 2386. [2021-08-06 14:38:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2386 states, 2385 states have (on average 2.3308176100628932) internal successors, (5559), 2385 states have internal predecessors, (5559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 5559 transitions. [2021-08-06 14:38:47,706 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 5559 transitions. Word has length 48 [2021-08-06 14:38:47,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:47,706 INFO L470 AbstractCegarLoop]: Abstraction has 2386 states and 5559 transitions. [2021-08-06 14:38:47,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:47,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 5559 transitions. [2021-08-06 14:38:47,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:47,708 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:47,708 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, 1, 1] [2021-08-06 14:38:47,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-06 14:38:47,709 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:47,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:47,710 INFO L82 PathProgramCache]: Analyzing trace with hash 227264340, now seen corresponding path program 46 times [2021-08-06 14:38:47,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:47,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321435258] [2021-08-06 14:38:47,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:47,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:47,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:47,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:47,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321435258] [2021-08-06 14:38:47,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321435258] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:47,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:47,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 14:38:47,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191096926] [2021-08-06 14:38:47,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 14:38:47,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:47,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 14:38:47,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-06 14:38:47,874 INFO L87 Difference]: Start difference. First operand 2386 states and 5559 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:47,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:47,968 INFO L93 Difference]: Finished difference Result 2818 states and 6538 transitions. [2021-08-06 14:38:47,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 14:38:47,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:47,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:47,971 INFO L225 Difference]: With dead ends: 2818 [2021-08-06 14:38:47,971 INFO L226 Difference]: Without dead ends: 2572 [2021-08-06 14:38:47,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 46.1ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:47,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2021-08-06 14:38:47,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 2373. [2021-08-06 14:38:47,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2372 states have (on average 2.3263069139966275) internal successors, (5518), 2372 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:47,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 5518 transitions. [2021-08-06 14:38:47,995 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 5518 transitions. Word has length 48 [2021-08-06 14:38:47,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:47,995 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 5518 transitions. [2021-08-06 14:38:47,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:47,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 5518 transitions. [2021-08-06 14:38:47,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:47,997 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:47,997 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, 1, 1] [2021-08-06 14:38:47,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-06 14:38:47,997 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:47,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:47,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1602419814, now seen corresponding path program 47 times [2021-08-06 14:38:47,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:47,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230342087] [2021-08-06 14:38:47,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:47,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:48,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:48,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:48,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230342087] [2021-08-06 14:38:48,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230342087] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:48,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:48,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:48,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199096468] [2021-08-06 14:38:48,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:48,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:48,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:48,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:48,116 INFO L87 Difference]: Start difference. First operand 2373 states and 5518 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:48,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:48,237 INFO L93 Difference]: Finished difference Result 3589 states and 8166 transitions. [2021-08-06 14:38:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 14:38:48,237 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:48,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:48,240 INFO L225 Difference]: With dead ends: 3589 [2021-08-06 14:38:48,240 INFO L226 Difference]: Without dead ends: 3358 [2021-08-06 14:38:48,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 35.7ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:48,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2021-08-06 14:38:48,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 2213. [2021-08-06 14:38:48,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2213 states, 2212 states have (on average 2.3200723327305606) internal successors, (5132), 2212 states have internal predecessors, (5132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:48,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 5132 transitions. [2021-08-06 14:38:48,263 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 5132 transitions. Word has length 48 [2021-08-06 14:38:48,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:48,264 INFO L470 AbstractCegarLoop]: Abstraction has 2213 states and 5132 transitions. [2021-08-06 14:38:48,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:48,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 5132 transitions. [2021-08-06 14:38:48,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:48,266 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:48,266 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, 1, 1] [2021-08-06 14:38:48,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-06 14:38:48,266 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:48,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:48,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1315155866, now seen corresponding path program 48 times [2021-08-06 14:38:48,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:48,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218983890] [2021-08-06 14:38:48,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:48,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:48,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:48,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218983890] [2021-08-06 14:38:48,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218983890] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:48,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:48,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 14:38:48,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588517224] [2021-08-06 14:38:48,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 14:38:48,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:48,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 14:38:48,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:48,351 INFO L87 Difference]: Start difference. First operand 2213 states and 5132 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:48,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:48,498 INFO L93 Difference]: Finished difference Result 3746 states and 8538 transitions. [2021-08-06 14:38:48,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 14:38:48,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:48,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:48,502 INFO L225 Difference]: With dead ends: 3746 [2021-08-06 14:38:48,502 INFO L226 Difference]: Without dead ends: 3472 [2021-08-06 14:38:48,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 54.5ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-08-06 14:38:48,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2021-08-06 14:38:48,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 2204. [2021-08-06 14:38:48,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 2203 states have (on average 2.3104857013163866) internal successors, (5090), 2203 states have internal predecessors, (5090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:48,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 5090 transitions. [2021-08-06 14:38:48,527 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 5090 transitions. Word has length 48 [2021-08-06 14:38:48,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:48,527 INFO L470 AbstractCegarLoop]: Abstraction has 2204 states and 5090 transitions. [2021-08-06 14:38:48,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:48,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 5090 transitions. [2021-08-06 14:38:48,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:48,529 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:48,529 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, 1, 1] [2021-08-06 14:38:48,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-06 14:38:48,529 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:48,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:48,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1744664144, now seen corresponding path program 49 times [2021-08-06 14:38:48,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:48,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885280186] [2021-08-06 14:38:48,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:48,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:48,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:48,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:48,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885280186] [2021-08-06 14:38:48,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885280186] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:48,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:48,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 14:38:48,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926023054] [2021-08-06 14:38:48,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 14:38:48,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:48,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 14:38:48,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:48,635 INFO L87 Difference]: Start difference. First operand 2204 states and 5090 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:48,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:48,825 INFO L93 Difference]: Finished difference Result 3110 states and 7090 transitions. [2021-08-06 14:38:48,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 14:38:48,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:48,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:48,828 INFO L225 Difference]: With dead ends: 3110 [2021-08-06 14:38:48,828 INFO L226 Difference]: Without dead ends: 2537 [2021-08-06 14:38:48,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 98.2ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-08-06 14:38:48,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2021-08-06 14:38:48,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2237. [2021-08-06 14:38:48,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 2236 states have (on average 2.2991949910554563) internal successors, (5141), 2236 states have internal predecessors, (5141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 5141 transitions. [2021-08-06 14:38:48,866 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 5141 transitions. Word has length 48 [2021-08-06 14:38:48,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:48,866 INFO L470 AbstractCegarLoop]: Abstraction has 2237 states and 5141 transitions. [2021-08-06 14:38:48,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 5141 transitions. [2021-08-06 14:38:48,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:48,868 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:48,868 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, 1, 1] [2021-08-06 14:38:48,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-06 14:38:48,868 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:48,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:48,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1370728880, now seen corresponding path program 50 times [2021-08-06 14:38:48,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:48,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674748962] [2021-08-06 14:38:48,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:48,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:48,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:48,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674748962] [2021-08-06 14:38:48,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674748962] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:48,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:48,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-06 14:38:48,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387402573] [2021-08-06 14:38:48,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 14:38:48,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:48,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 14:38:48,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-06 14:38:48,964 INFO L87 Difference]: Start difference. First operand 2237 states and 5141 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:49,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:49,085 INFO L93 Difference]: Finished difference Result 2595 states and 5922 transitions. [2021-08-06 14:38:49,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 14:38:49,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:49,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:49,088 INFO L225 Difference]: With dead ends: 2595 [2021-08-06 14:38:49,088 INFO L226 Difference]: Without dead ends: 2390 [2021-08-06 14:38:49,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.7ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:49,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-08-06 14:38:49,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 2236. [2021-08-06 14:38:49,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2235 states have (on average 2.2970917225950784) internal successors, (5134), 2235 states have internal predecessors, (5134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:49,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 5134 transitions. [2021-08-06 14:38:49,110 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 5134 transitions. Word has length 48 [2021-08-06 14:38:49,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:49,110 INFO L470 AbstractCegarLoop]: Abstraction has 2236 states and 5134 transitions. [2021-08-06 14:38:49,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:49,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 5134 transitions. [2021-08-06 14:38:49,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:49,112 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:49,112 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, 1, 1] [2021-08-06 14:38:49,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-06 14:38:49,113 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:49,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:49,113 INFO L82 PathProgramCache]: Analyzing trace with hash -221290520, now seen corresponding path program 51 times [2021-08-06 14:38:49,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:49,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251892426] [2021-08-06 14:38:49,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:49,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:49,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:49,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251892426] [2021-08-06 14:38:49,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251892426] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:49,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:49,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 14:38:49,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697085910] [2021-08-06 14:38:49,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 14:38:49,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:49,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 14:38:49,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:49,198 INFO L87 Difference]: Start difference. First operand 2236 states and 5134 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:49,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:49,378 INFO L93 Difference]: Finished difference Result 2699 states and 6128 transitions. [2021-08-06 14:38:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 14:38:49,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:49,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:49,382 INFO L225 Difference]: With dead ends: 2699 [2021-08-06 14:38:49,382 INFO L226 Difference]: Without dead ends: 2496 [2021-08-06 14:38:49,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 85.9ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-08-06 14:38:49,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-08-06 14:38:49,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2190. [2021-08-06 14:38:49,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2190 states, 2189 states have (on average 2.2905436272270445) internal successors, (5014), 2189 states have internal predecessors, (5014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:49,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2190 states to 2190 states and 5014 transitions. [2021-08-06 14:38:49,412 INFO L78 Accepts]: Start accepts. Automaton has 2190 states and 5014 transitions. Word has length 48 [2021-08-06 14:38:49,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:49,412 INFO L470 AbstractCegarLoop]: Abstraction has 2190 states and 5014 transitions. [2021-08-06 14:38:49,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:49,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2190 states and 5014 transitions. [2021-08-06 14:38:49,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:49,414 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:49,414 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, 1, 1] [2021-08-06 14:38:49,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-06 14:38:49,414 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:49,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:49,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1670100910, now seen corresponding path program 52 times [2021-08-06 14:38:49,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:49,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159534712] [2021-08-06 14:38:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:49,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:49,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:49,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159534712] [2021-08-06 14:38:49,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159534712] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:49,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:49,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:49,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474036711] [2021-08-06 14:38:49,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:49,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:49,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:49,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:49,515 INFO L87 Difference]: Start difference. First operand 2190 states and 5014 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:49,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:49,694 INFO L93 Difference]: Finished difference Result 2497 states and 5616 transitions. [2021-08-06 14:38:49,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 14:38:49,694 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:49,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:49,697 INFO L225 Difference]: With dead ends: 2497 [2021-08-06 14:38:49,697 INFO L226 Difference]: Without dead ends: 2099 [2021-08-06 14:38:49,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 72.0ms TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-06 14:38:49,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2021-08-06 14:38:49,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 2030. [2021-08-06 14:38:49,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2030 states, 2029 states have (on average 2.2720551996057172) internal successors, (4610), 2029 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:49,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 4610 transitions. [2021-08-06 14:38:49,715 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 4610 transitions. Word has length 48 [2021-08-06 14:38:49,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:49,715 INFO L470 AbstractCegarLoop]: Abstraction has 2030 states and 4610 transitions. [2021-08-06 14:38:49,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:49,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 4610 transitions. [2021-08-06 14:38:49,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:49,717 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:49,717 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, 1, 1] [2021-08-06 14:38:49,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-06 14:38:49,717 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:49,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:49,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1885258160, now seen corresponding path program 53 times [2021-08-06 14:38:49,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:49,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025101055] [2021-08-06 14:38:49,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:49,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:49,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:49,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025101055] [2021-08-06 14:38:49,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025101055] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:49,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:49,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:49,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583981031] [2021-08-06 14:38:49,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:49,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:49,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:49,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:49,816 INFO L87 Difference]: Start difference. First operand 2030 states and 4610 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:50,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:50,033 INFO L93 Difference]: Finished difference Result 2359 states and 5297 transitions. [2021-08-06 14:38:50,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 14:38:50,033 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:50,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:50,036 INFO L225 Difference]: With dead ends: 2359 [2021-08-06 14:38:50,036 INFO L226 Difference]: Without dead ends: 2069 [2021-08-06 14:38:50,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 86.8ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-08-06 14:38:50,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2021-08-06 14:38:50,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1852. [2021-08-06 14:38:50,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1851 states have (on average 2.2744462452728254) internal successors, (4210), 1851 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 4210 transitions. [2021-08-06 14:38:50,055 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 4210 transitions. Word has length 48 [2021-08-06 14:38:50,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:50,055 INFO L470 AbstractCegarLoop]: Abstraction has 1852 states and 4210 transitions. [2021-08-06 14:38:50,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:50,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 4210 transitions. [2021-08-06 14:38:50,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:50,057 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:50,057 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, 1, 1] [2021-08-06 14:38:50,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-06 14:38:50,057 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:50,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:50,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1584892846, now seen corresponding path program 54 times [2021-08-06 14:38:50,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:50,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631685543] [2021-08-06 14:38:50,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:50,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:50,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:50,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631685543] [2021-08-06 14:38:50,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631685543] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:50,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:50,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:50,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169379467] [2021-08-06 14:38:50,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:50,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:50,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:50,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:50,154 INFO L87 Difference]: Start difference. First operand 1852 states and 4210 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:50,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:50,313 INFO L93 Difference]: Finished difference Result 1973 states and 4426 transitions. [2021-08-06 14:38:50,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 14:38:50,313 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:50,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:50,315 INFO L225 Difference]: With dead ends: 1973 [2021-08-06 14:38:50,315 INFO L226 Difference]: Without dead ends: 1816 [2021-08-06 14:38:50,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 63.5ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-08-06 14:38:50,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2021-08-06 14:38:50,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1639. [2021-08-06 14:38:50,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 2.272893772893773) internal successors, (3723), 1638 states have internal predecessors, (3723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 3723 transitions. [2021-08-06 14:38:50,329 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 3723 transitions. Word has length 48 [2021-08-06 14:38:50,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:50,329 INFO L470 AbstractCegarLoop]: Abstraction has 1639 states and 3723 transitions. [2021-08-06 14:38:50,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:50,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 3723 transitions. [2021-08-06 14:38:50,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:50,331 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:50,331 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, 1, 1] [2021-08-06 14:38:50,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-06 14:38:50,331 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:50,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:50,331 INFO L82 PathProgramCache]: Analyzing trace with hash -2132644280, now seen corresponding path program 55 times [2021-08-06 14:38:50,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:50,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467530297] [2021-08-06 14:38:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:50,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:50,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:50,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467530297] [2021-08-06 14:38:50,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467530297] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:50,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:50,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:50,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318483860] [2021-08-06 14:38:50,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:50,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:50,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:50,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:50,462 INFO L87 Difference]: Start difference. First operand 1639 states and 3723 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:50,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:50,757 INFO L93 Difference]: Finished difference Result 2243 states and 5036 transitions. [2021-08-06 14:38:50,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-06 14:38:50,758 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:50,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:50,760 INFO L225 Difference]: With dead ends: 2243 [2021-08-06 14:38:50,760 INFO L226 Difference]: Without dead ends: 2174 [2021-08-06 14:38:50,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 148.6ms TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:38:50,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2021-08-06 14:38:50,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 1621. [2021-08-06 14:38:50,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 1620 states have (on average 2.27037037037037) internal successors, (3678), 1620 states have internal predecessors, (3678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:50,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 3678 transitions. [2021-08-06 14:38:50,777 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 3678 transitions. Word has length 48 [2021-08-06 14:38:50,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:50,777 INFO L470 AbstractCegarLoop]: Abstraction has 1621 states and 3678 transitions. [2021-08-06 14:38:50,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:50,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 3678 transitions. [2021-08-06 14:38:50,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:50,778 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:50,779 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, 1, 1] [2021-08-06 14:38:50,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-06 14:38:50,779 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:50,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:50,779 INFO L82 PathProgramCache]: Analyzing trace with hash 252424138, now seen corresponding path program 56 times [2021-08-06 14:38:50,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:50,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605983646] [2021-08-06 14:38:50,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:50,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:50,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:50,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605983646] [2021-08-06 14:38:50,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605983646] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:50,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:50,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:50,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131952149] [2021-08-06 14:38:50,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:50,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:50,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:50,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:50,844 INFO L87 Difference]: Start difference. First operand 1621 states and 3678 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:51,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:51,005 INFO L93 Difference]: Finished difference Result 1769 states and 3934 transitions. [2021-08-06 14:38:51,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 14:38:51,005 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:51,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:51,007 INFO L225 Difference]: With dead ends: 1769 [2021-08-06 14:38:51,007 INFO L226 Difference]: Without dead ends: 1350 [2021-08-06 14:38:51,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 80.6ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-08-06 14:38:51,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2021-08-06 14:38:51,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1052. [2021-08-06 14:38:51,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1051 states have (on average 2.253092293054234) internal successors, (2368), 1051 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:51,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 2368 transitions. [2021-08-06 14:38:51,017 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 2368 transitions. Word has length 48 [2021-08-06 14:38:51,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:51,017 INFO L470 AbstractCegarLoop]: Abstraction has 1052 states and 2368 transitions. [2021-08-06 14:38:51,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:51,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 2368 transitions. [2021-08-06 14:38:51,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:51,018 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:51,018 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, 1, 1] [2021-08-06 14:38:51,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-06 14:38:51,018 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:51,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:51,018 INFO L82 PathProgramCache]: Analyzing trace with hash 451410800, now seen corresponding path program 57 times [2021-08-06 14:38:51,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:51,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402353768] [2021-08-06 14:38:51,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:51,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:51,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:51,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402353768] [2021-08-06 14:38:51,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402353768] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:51,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:51,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 14:38:51,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968563973] [2021-08-06 14:38:51,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 14:38:51,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:51,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 14:38:51,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-06 14:38:51,094 INFO L87 Difference]: Start difference. First operand 1052 states and 2368 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:51,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:51,201 INFO L93 Difference]: Finished difference Result 887 states and 1929 transitions. [2021-08-06 14:38:51,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 14:38:51,201 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:51,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:51,202 INFO L225 Difference]: With dead ends: 887 [2021-08-06 14:38:51,202 INFO L226 Difference]: Without dead ends: 758 [2021-08-06 14:38:51,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 40.3ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:51,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-08-06 14:38:51,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 758. [2021-08-06 14:38:51,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 2.151915455746367) internal successors, (1629), 757 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:51,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1629 transitions. [2021-08-06 14:38:51,208 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1629 transitions. Word has length 48 [2021-08-06 14:38:51,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:51,209 INFO L470 AbstractCegarLoop]: Abstraction has 758 states and 1629 transitions. [2021-08-06 14:38:51,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:51,209 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1629 transitions. [2021-08-06 14:38:51,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:51,209 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:51,209 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, 1, 1] [2021-08-06 14:38:51,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-06 14:38:51,210 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:51,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:51,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1915961824, now seen corresponding path program 58 times [2021-08-06 14:38:51,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:51,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022486224] [2021-08-06 14:38:51,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:51,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:51,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:51,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:51,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022486224] [2021-08-06 14:38:51,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022486224] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:51,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:51,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-06 14:38:51,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666246070] [2021-08-06 14:38:51,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 14:38:51,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:51,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 14:38:51,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-08-06 14:38:51,355 INFO L87 Difference]: Start difference. First operand 758 states and 1629 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:51,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:51,515 INFO L93 Difference]: Finished difference Result 892 states and 1906 transitions. [2021-08-06 14:38:51,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 14:38:51,515 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:51,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:51,516 INFO L225 Difference]: With dead ends: 892 [2021-08-06 14:38:51,516 INFO L226 Difference]: Without dead ends: 854 [2021-08-06 14:38:51,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 108.9ms TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-08-06 14:38:51,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-08-06 14:38:51,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 762. [2021-08-06 14:38:51,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 761 states have (on average 2.1537450722733245) internal successors, (1639), 761 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:51,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1639 transitions. [2021-08-06 14:38:51,522 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1639 transitions. Word has length 48 [2021-08-06 14:38:51,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:51,522 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1639 transitions. [2021-08-06 14:38:51,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:51,523 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1639 transitions. [2021-08-06 14:38:51,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:51,523 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:51,523 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, 1, 1] [2021-08-06 14:38:51,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-06 14:38:51,523 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:51,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:51,524 INFO L82 PathProgramCache]: Analyzing trace with hash -132217086, now seen corresponding path program 59 times [2021-08-06 14:38:51,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:51,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278720576] [2021-08-06 14:38:51,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:51,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:51,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:51,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:51,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278720576] [2021-08-06 14:38:51,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278720576] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:51,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:51,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-06 14:38:51,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382528458] [2021-08-06 14:38:51,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 14:38:51,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:51,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 14:38:51,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-08-06 14:38:51,655 INFO L87 Difference]: Start difference. First operand 762 states and 1639 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:51,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:51,824 INFO L93 Difference]: Finished difference Result 824 states and 1764 transitions. [2021-08-06 14:38:51,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 14:38:51,824 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:51,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:51,825 INFO L225 Difference]: With dead ends: 824 [2021-08-06 14:38:51,825 INFO L226 Difference]: Without dead ends: 726 [2021-08-06 14:38:51,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 92.3ms TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-08-06 14:38:51,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2021-08-06 14:38:51,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 718. [2021-08-06 14:38:51,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 717 states have (on average 2.1352859135285915) internal successors, (1531), 717 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:51,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1531 transitions. [2021-08-06 14:38:51,831 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1531 transitions. Word has length 48 [2021-08-06 14:38:51,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:51,831 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 1531 transitions. [2021-08-06 14:38:51,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:51,831 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1531 transitions. [2021-08-06 14:38:51,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:51,832 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:51,832 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, 1, 1] [2021-08-06 14:38:51,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-06 14:38:51,832 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:51,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:51,832 INFO L82 PathProgramCache]: Analyzing trace with hash 2031263338, now seen corresponding path program 60 times [2021-08-06 14:38:51,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:51,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778192519] [2021-08-06 14:38:51,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:51,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:51,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:51,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:51,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778192519] [2021-08-06 14:38:51,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778192519] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:51,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:51,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 14:38:51,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441264560] [2021-08-06 14:38:51,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 14:38:51,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:51,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 14:38:51,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:51,937 INFO L87 Difference]: Start difference. First operand 718 states and 1531 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:52,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:52,056 INFO L93 Difference]: Finished difference Result 842 states and 1792 transitions. [2021-08-06 14:38:52,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 14:38:52,057 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:52,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:52,058 INFO L225 Difference]: With dead ends: 842 [2021-08-06 14:38:52,058 INFO L226 Difference]: Without dead ends: 792 [2021-08-06 14:38:52,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 59.6ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-08-06 14:38:52,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2021-08-06 14:38:52,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 710. [2021-08-06 14:38:52,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 2.1354019746121295) internal successors, (1514), 709 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1514 transitions. [2021-08-06 14:38:52,064 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1514 transitions. Word has length 48 [2021-08-06 14:38:52,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:52,064 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 1514 transitions. [2021-08-06 14:38:52,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:52,064 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1514 transitions. [2021-08-06 14:38:52,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:52,065 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:52,065 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, 1, 1] [2021-08-06 14:38:52,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-06 14:38:52,065 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:52,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:52,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1199569654, now seen corresponding path program 61 times [2021-08-06 14:38:52,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:52,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33120677] [2021-08-06 14:38:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:52,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:52,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:52,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33120677] [2021-08-06 14:38:52,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33120677] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:52,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:52,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 14:38:52,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450395610] [2021-08-06 14:38:52,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 14:38:52,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:52,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 14:38:52,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:52,202 INFO L87 Difference]: Start difference. First operand 710 states and 1514 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:52,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:52,318 INFO L93 Difference]: Finished difference Result 744 states and 1579 transitions. [2021-08-06 14:38:52,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 14:38:52,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:52,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:52,319 INFO L225 Difference]: With dead ends: 744 [2021-08-06 14:38:52,319 INFO L226 Difference]: Without dead ends: 714 [2021-08-06 14:38:52,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 62.2ms TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-08-06 14:38:52,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-08-06 14:38:52,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 706. [2021-08-06 14:38:52,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 2.1333333333333333) internal successors, (1504), 705 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:52,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1504 transitions. [2021-08-06 14:38:52,325 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1504 transitions. Word has length 48 [2021-08-06 14:38:52,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:52,325 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 1504 transitions. [2021-08-06 14:38:52,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:52,325 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1504 transitions. [2021-08-06 14:38:52,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:52,326 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:52,326 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, 1, 1] [2021-08-06 14:38:52,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-06 14:38:52,326 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:52,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:52,326 INFO L82 PathProgramCache]: Analyzing trace with hash 661081684, now seen corresponding path program 62 times [2021-08-06 14:38:52,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:52,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919822386] [2021-08-06 14:38:52,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:52,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:52,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:52,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919822386] [2021-08-06 14:38:52,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919822386] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:52,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:52,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 14:38:52,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120846571] [2021-08-06 14:38:52,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 14:38:52,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:52,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 14:38:52,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-08-06 14:38:52,471 INFO L87 Difference]: Start difference. First operand 706 states and 1504 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:52,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:52,588 INFO L93 Difference]: Finished difference Result 676 states and 1437 transitions. [2021-08-06 14:38:52,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 14:38:52,589 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:52,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:52,589 INFO L225 Difference]: With dead ends: 676 [2021-08-06 14:38:52,589 INFO L226 Difference]: Without dead ends: 610 [2021-08-06 14:38:52,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 65.3ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-08-06 14:38:52,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-08-06 14:38:52,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2021-08-06 14:38:52,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 2.1379310344827585) internal successors, (1302), 609 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:52,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 1302 transitions. [2021-08-06 14:38:52,594 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 1302 transitions. Word has length 48 [2021-08-06 14:38:52,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:52,595 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 1302 transitions. [2021-08-06 14:38:52,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:52,595 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 1302 transitions. [2021-08-06 14:38:52,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:52,595 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:52,595 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, 1, 1] [2021-08-06 14:38:52,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-08-06 14:38:52,595 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:52,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:52,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1979077640, now seen corresponding path program 63 times [2021-08-06 14:38:52,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:52,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037304024] [2021-08-06 14:38:52,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:52,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:52,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:52,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:52,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037304024] [2021-08-06 14:38:52,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037304024] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:52,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:52,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 14:38:52,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210199255] [2021-08-06 14:38:52,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 14:38:52,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:52,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 14:38:52,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-08-06 14:38:52,699 INFO L87 Difference]: Start difference. First operand 610 states and 1302 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:52,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:52,780 INFO L93 Difference]: Finished difference Result 487 states and 1022 transitions. [2021-08-06 14:38:52,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 14:38:52,780 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:52,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:52,780 INFO L225 Difference]: With dead ends: 487 [2021-08-06 14:38:52,781 INFO L226 Difference]: Without dead ends: 363 [2021-08-06 14:38:52,781 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 69.7ms TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-08-06 14:38:52,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-08-06 14:38:52,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2021-08-06 14:38:52,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 2.1270718232044197) internal successors, (770), 362 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:52,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 770 transitions. [2021-08-06 14:38:52,784 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 770 transitions. Word has length 48 [2021-08-06 14:38:52,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:52,784 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 770 transitions. [2021-08-06 14:38:52,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:52,784 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 770 transitions. [2021-08-06 14:38:52,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-06 14:38:52,784 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:38:52,784 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, 1, 1] [2021-08-06 14:38:52,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-08-06 14:38:52,784 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-06 14:38:52,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:38:52,785 INFO L82 PathProgramCache]: Analyzing trace with hash -37994470, now seen corresponding path program 64 times [2021-08-06 14:38:52,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:38:52,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644375724] [2021-08-06 14:38:52,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:38:52,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:38:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:38:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:38:52,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:38:52,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644375724] [2021-08-06 14:38:52,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644375724] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:38:52,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:38:52,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 14:38:52,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64295837] [2021-08-06 14:38:52,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 14:38:52,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:38:52,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 14:38:52,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-06 14:38:52,864 INFO L87 Difference]: Start difference. First operand 363 states and 770 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:52,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:38:52,959 INFO L93 Difference]: Finished difference Result 343 states and 732 transitions. [2021-08-06 14:38:52,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 14:38:52,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-08-06 14:38:52,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:38:52,960 INFO L225 Difference]: With dead ends: 343 [2021-08-06 14:38:52,960 INFO L226 Difference]: Without dead ends: 0 [2021-08-06 14:38:52,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-06 14:38:52,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-06 14:38:52,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-06 14:38:52,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:52,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-06 14:38:52,960 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-08-06 14:38:52,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:38:52,960 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-06 14:38:52,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:38:52,960 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-06 14:38:52,960 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 14:38:52,962 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT [2021-08-06 14:38:52,963 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 14:38:52,963 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-06 14:38:52,963 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-06 14:38:52,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-08-06 14:38:52,966 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 14:38:52,966 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 14:38:52,967 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 02:38:52 BasicIcfg [2021-08-06 14:38:52,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 14:38:52,968 INFO L168 Benchmark]: Toolchain (without parser) took 24714.43 ms. Allocated memory was 207.6 MB in the beginning and 889.2 MB in the end (delta: 681.6 MB). Free memory was 187.4 MB in the beginning and 564.0 MB in the end (delta: -376.6 MB). Peak memory consumption was 306.2 MB. Max. memory is 8.0 GB. [2021-08-06 14:38:52,968 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 207.6 MB. Free memory is still 188.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 14:38:52,968 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.95 ms. Allocated memory is still 207.6 MB. Free memory was 187.4 MB in the beginning and 185.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-06 14:38:52,968 INFO L168 Benchmark]: Boogie Preprocessor took 18.49 ms. Allocated memory is still 207.6 MB. Free memory was 185.8 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. [2021-08-06 14:38:52,968 INFO L168 Benchmark]: RCFGBuilder took 205.63 ms. Allocated memory is still 207.6 MB. Free memory was 184.7 MB in the beginning and 170.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-08-06 14:38:52,968 INFO L168 Benchmark]: TraceAbstraction took 24462.43 ms. Allocated memory was 207.6 MB in the beginning and 889.2 MB in the end (delta: 681.6 MB). Free memory was 170.1 MB in the beginning and 564.0 MB in the end (delta: -393.9 MB). Peak memory consumption was 288.4 MB. Max. memory is 8.0 GB. [2021-08-06 14:38:52,968 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 0.13 ms. Allocated memory is still 207.6 MB. Free memory is still 188.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 20.95 ms. Allocated memory is still 207.6 MB. Free memory was 187.4 MB in the beginning and 185.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 18.49 ms. Allocated memory is still 207.6 MB. Free memory was 185.8 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 205.63 ms. Allocated memory is still 207.6 MB. Free memory was 184.7 MB in the beginning and 170.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 24462.43 ms. Allocated memory was 207.6 MB in the beginning and 889.2 MB in the end (delta: 681.6 MB). Free memory was 170.1 MB in the beginning and 564.0 MB in the end (delta: -393.9 MB). Peak memory consumption was 288.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 82]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 99 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 24347.2ms, OverallIterations: 64, TraceHistogramMax: 1, EmptinessCheckTime: 287.1ms, AutomataDifference: 13292.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 106.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6272 SDtfs, 10330 SDslu, 24971 SDs, 0 SdLazy, 16301 SolverSat, 2461 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6597.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 846 GetRequests, 121 SyntacticMatches, 35 SemanticMatches, 690 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1328 ImplicationChecksByTransitivity, 5482.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5804occurred in iteration=12, InterpolantAutomatonStates: 704, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3175.8ms AutomataMinimizationTime, 64 MinimizatonAttempts, 55894 StatesRemovedByMinimization, 58 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 55.3ms SsaConstructionTime, 367.6ms SatisfiabilityAnalysisTime, 6720.9ms InterpolantComputationTime, 3072 NumberOfCodeBlocks, 3072 NumberOfCodeBlocksAsserted, 64 NumberOfCheckSat, 3008 ConstructedInterpolants, 0 QuantifiedInterpolants, 19308 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 64 InterpolantComputations, 64 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-06 14:38:52,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...