/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 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-15 13:40:28,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 13:40:28,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 13:40:28,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 13:40:28,401 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 [2022-02-15 13:40:28,413 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 13:40:28,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 13:40:28,413 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-15 13:40:28,413 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-15 13:40:28,414 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-15 13:40:28,414 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-15 13:40:28,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-15 13:40:28,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-15 13:40:28,414 INFO L138 SettingsManager]: * Use SBE=true [2022-02-15 13:40:28,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 13:40:28,415 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 13:40:28,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 13:40:28,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 13:40:28,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 13:40:28,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 13:40:28,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 13:40:28,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 13:40:28,415 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 13:40:28,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 13:40:28,415 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 13:40:28,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 13:40:28,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 13:40:28,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 13:40:28,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 13:40:28,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 13:40:28,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 13:40:28,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 13:40:28,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-15 13:40:28,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-15 13:40:28,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 13:40:28,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-15 13:40:28,416 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-15 13:40:28,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 13:40:28,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-15 13:40:28,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 13:40:28,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 13:40:28,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 13:40:28,615 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-15 13:40:28,616 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-15 13:40:28,617 INFO L432 ainManager$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 [2022-02-15 13:40:28,617 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2022-02-15 13:40:28,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 13:40:28,648 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 13:40:28,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-15 13:40:28,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-15 13:40:28,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-15 13:40:28,659 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 15.02 01:40:28" (1/1) ... [2022-02-15 13:40:28,668 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 15.02 01:40:28" (1/1) ... [2022-02-15 13:40:28,673 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-15 13:40:28,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-15 13:40:28,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 13:40:28,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 13:40:28,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 13:40:28,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:40:28" (1/1) ... [2022-02-15 13:40:28,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:40:28" (1/1) ... [2022-02-15 13:40:28,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:40:28" (1/1) ... [2022-02-15 13:40:28,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:40:28" (1/1) ... [2022-02-15 13:40:28,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:40:28" (1/1) ... [2022-02-15 13:40:28,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:40:28" (1/1) ... [2022-02-15 13:40:28,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:40:28" (1/1) ... [2022-02-15 13:40:28,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 13:40:28,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 13:40:28,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 13:40:28,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 13:40:28,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:40:28" (1/1) ... [2022-02-15 13:40:28,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 13:40:28,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:40:28,727 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) [2022-02-15 13:40:28,746 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 [2022-02-15 13:40:28,774 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-15 13:40:28,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-15 13:40:28,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-15 13:40:28,775 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-15 13:40:28,775 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-15 13:40:28,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-15 13:40:28,775 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-15 13:40:28,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 13:40:28,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 13:40:28,775 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-15 13:40:28,776 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-15 13:40:28,776 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-15 13:40:28,776 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-15 13:40:28,814 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 13:40:28,815 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 13:40:28,900 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 13:40:28,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 13:40:28,905 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-15 13:40:28,906 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:40:28 BoogieIcfgContainer [2022-02-15 13:40:28,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 13:40:28,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 13:40:28,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 13:40:28,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 13:40:28,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:40:28" (1/2) ... [2022-02-15 13:40:28,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296355aa and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:40:28, skipping insertion in model container [2022-02-15 13:40:28,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:40:28" (2/2) ... [2022-02-15 13:40:28,911 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2022-02-15 13:40:28,914 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-15 13:40:28,914 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-15 13:40:28,914 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 13:40:28,914 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-15 13:40:28,947 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-15 13:40:28,976 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 13:40:28,980 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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 [2022-02-15 13:40:28,980 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-15 13:40:28,986 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 53 transitions, 130 flow [2022-02-15 13:40:29,094 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) [2022-02-15 13:40:29,103 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) [2022-02-15 13:40:29,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:29,128 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:29,128 INFO L514 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] [2022-02-15 13:40:29,130 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:29,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:29,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1471808152, now seen corresponding path program 1 times [2022-02-15 13:40:29,141 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:29,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038490211] [2022-02-15 13:40:29,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:29,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:29,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:29,399 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:29,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038490211] [2022-02-15 13:40:29,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038490211] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:29,400 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:29,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:29,401 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426328398] [2022-02-15 13:40:29,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:29,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:29,404 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:29,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:29,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:29,440 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) [2022-02-15 13:40:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:29,721 INFO L93 Difference]: Finished difference Result 4259 states and 11383 transitions. [2022-02-15 13:40:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 13:40:29,723 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 [2022-02-15 13:40:29,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:29,749 INFO L225 Difference]: With dead ends: 4259 [2022-02-15 13:40:29,749 INFO L226 Difference]: Without dead ends: 4067 [2022-02-15 13:40:29,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:40:29,753 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 223 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:29,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 737 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:29,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4067 states. [2022-02-15 13:40:29,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4067 to 3212. [2022-02-15 13:40:29,862 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) [2022-02-15 13:40:29,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3212 states to 3212 states and 8898 transitions. [2022-02-15 13:40:29,874 INFO L78 Accepts]: Start accepts. Automaton has 3212 states and 8898 transitions. Word has length 48 [2022-02-15 13:40:29,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:29,875 INFO L470 AbstractCegarLoop]: Abstraction has 3212 states and 8898 transitions. [2022-02-15 13:40:29,875 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) [2022-02-15 13:40:29,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3212 states and 8898 transitions. [2022-02-15 13:40:29,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:29,884 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:29,884 INFO L514 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] [2022-02-15 13:40:29,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 13:40:29,885 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:29,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:29,887 INFO L85 PathProgramCache]: Analyzing trace with hash 315387816, now seen corresponding path program 2 times [2022-02-15 13:40:29,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:29,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073574301] [2022-02-15 13:40:29,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:29,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:30,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:30,120 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:30,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073574301] [2022-02-15 13:40:30,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073574301] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:30,120 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:30,120 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:30,121 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772068479] [2022-02-15 13:40:30,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:30,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:30,122 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:30,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:30,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:30,127 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) [2022-02-15 13:40:30,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:30,470 INFO L93 Difference]: Finished difference Result 5269 states and 14643 transitions. [2022-02-15 13:40:30,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 13:40:30,471 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 [2022-02-15 13:40:30,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:30,490 INFO L225 Difference]: With dead ends: 5269 [2022-02-15 13:40:30,491 INFO L226 Difference]: Without dead ends: 5269 [2022-02-15 13:40:30,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:40:30,495 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 184 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:30,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 500 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 13:40:30,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5269 states. [2022-02-15 13:40:30,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5269 to 4180. [2022-02-15 13:40:30,600 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) [2022-02-15 13:40:30,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4180 states to 4180 states and 11554 transitions. [2022-02-15 13:40:30,610 INFO L78 Accepts]: Start accepts. Automaton has 4180 states and 11554 transitions. Word has length 48 [2022-02-15 13:40:30,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:30,611 INFO L470 AbstractCegarLoop]: Abstraction has 4180 states and 11554 transitions. [2022-02-15 13:40:30,611 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) [2022-02-15 13:40:30,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4180 states and 11554 transitions. [2022-02-15 13:40:30,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:30,619 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:30,619 INFO L514 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] [2022-02-15 13:40:30,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 13:40:30,620 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:30,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:30,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1865950614, now seen corresponding path program 3 times [2022-02-15 13:40:30,621 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:30,621 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732595163] [2022-02-15 13:40:30,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:30,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:30,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:30,719 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:30,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732595163] [2022-02-15 13:40:30,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732595163] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:30,720 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:30,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:30,720 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116319554] [2022-02-15 13:40:30,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:30,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:30,720 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:30,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:30,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:30,721 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) [2022-02-15 13:40:30,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:30,893 INFO L93 Difference]: Finished difference Result 5339 states and 14297 transitions. [2022-02-15 13:40:30,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 13:40:30,894 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 [2022-02-15 13:40:30,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:30,911 INFO L225 Difference]: With dead ends: 5339 [2022-02-15 13:40:30,912 INFO L226 Difference]: Without dead ends: 5146 [2022-02-15 13:40:30,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:40:30,917 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 208 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:30,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 748 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:30,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5146 states. [2022-02-15 13:40:31,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5146 to 4227. [2022-02-15 13:40:31,027 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) [2022-02-15 13:40:31,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 11637 transitions. [2022-02-15 13:40:31,036 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 11637 transitions. Word has length 48 [2022-02-15 13:40:31,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:31,038 INFO L470 AbstractCegarLoop]: Abstraction has 4227 states and 11637 transitions. [2022-02-15 13:40:31,038 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) [2022-02-15 13:40:31,038 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 11637 transitions. [2022-02-15 13:40:31,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:31,046 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:31,047 INFO L514 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] [2022-02-15 13:40:31,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 13:40:31,047 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:31,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:31,048 INFO L85 PathProgramCache]: Analyzing trace with hash 258926934, now seen corresponding path program 4 times [2022-02-15 13:40:31,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:31,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425892595] [2022-02-15 13:40:31,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:31,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:31,269 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:31,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425892595] [2022-02-15 13:40:31,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425892595] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:31,270 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:31,270 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 13:40:31,270 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893552001] [2022-02-15 13:40:31,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:31,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:40:31,271 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:31,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:40:31,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:40:31,272 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) [2022-02-15 13:40:31,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:31,609 INFO L93 Difference]: Finished difference Result 6519 states and 17682 transitions. [2022-02-15 13:40:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 13:40:31,610 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 [2022-02-15 13:40:31,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:31,637 INFO L225 Difference]: With dead ends: 6519 [2022-02-15 13:40:31,637 INFO L226 Difference]: Without dead ends: 6267 [2022-02-15 13:40:31,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-02-15 13:40:31,641 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 233 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:31,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 951 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 13:40:31,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6267 states. [2022-02-15 13:40:31,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6267 to 4492. [2022-02-15 13:40:31,725 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) [2022-02-15 13:40:31,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 12277 transitions. [2022-02-15 13:40:31,733 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 12277 transitions. Word has length 48 [2022-02-15 13:40:31,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:31,735 INFO L470 AbstractCegarLoop]: Abstraction has 4492 states and 12277 transitions. [2022-02-15 13:40:31,735 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) [2022-02-15 13:40:31,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 12277 transitions. [2022-02-15 13:40:31,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:31,743 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:31,743 INFO L514 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] [2022-02-15 13:40:31,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 13:40:31,743 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:31,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:31,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1316926228, now seen corresponding path program 5 times [2022-02-15 13:40:31,744 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:31,744 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303996345] [2022-02-15 13:40:31,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:31,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:31,902 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:31,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303996345] [2022-02-15 13:40:31,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303996345] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:31,902 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:31,902 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 13:40:31,902 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459225679] [2022-02-15 13:40:31,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:31,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:40:31,902 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:31,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:40:31,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:40:31,903 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) [2022-02-15 13:40:32,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:32,298 INFO L93 Difference]: Finished difference Result 6396 states and 17339 transitions. [2022-02-15 13:40:32,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 13:40:32,298 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 [2022-02-15 13:40:32,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:32,308 INFO L225 Difference]: With dead ends: 6396 [2022-02-15 13:40:32,308 INFO L226 Difference]: Without dead ends: 5955 [2022-02-15 13:40:32,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-02-15 13:40:32,311 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 205 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:32,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 1087 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 13:40:32,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5955 states. [2022-02-15 13:40:32,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5955 to 4243. [2022-02-15 13:40:32,372 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) [2022-02-15 13:40:32,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4243 states to 4243 states and 11653 transitions. [2022-02-15 13:40:32,380 INFO L78 Accepts]: Start accepts. Automaton has 4243 states and 11653 transitions. Word has length 48 [2022-02-15 13:40:32,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:32,381 INFO L470 AbstractCegarLoop]: Abstraction has 4243 states and 11653 transitions. [2022-02-15 13:40:32,381 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) [2022-02-15 13:40:32,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4243 states and 11653 transitions. [2022-02-15 13:40:32,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:32,389 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:32,389 INFO L514 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] [2022-02-15 13:40:32,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 13:40:32,389 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:32,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:32,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1361135156, now seen corresponding path program 6 times [2022-02-15 13:40:32,390 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:32,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737331012] [2022-02-15 13:40:32,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:32,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:32,424 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:32,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737331012] [2022-02-15 13:40:32,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737331012] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:32,425 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:32,426 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 13:40:32,426 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495051603] [2022-02-15 13:40:32,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:32,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 13:40:32,426 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:32,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 13:40:32,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 13:40:32,426 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) [2022-02-15 13:40:32,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:32,449 INFO L93 Difference]: Finished difference Result 4195 states and 11359 transitions. [2022-02-15 13:40:32,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 13:40:32,449 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 [2022-02-15 13:40:32,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:32,455 INFO L225 Difference]: With dead ends: 4195 [2022-02-15 13:40:32,455 INFO L226 Difference]: Without dead ends: 4183 [2022-02-15 13:40:32,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 13:40:32,457 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 25 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:32,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 100 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:40:32,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4183 states. [2022-02-15 13:40:32,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4183 to 4183. [2022-02-15 13:40:32,506 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) [2022-02-15 13:40:32,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4183 states to 4183 states and 11326 transitions. [2022-02-15 13:40:32,513 INFO L78 Accepts]: Start accepts. Automaton has 4183 states and 11326 transitions. Word has length 48 [2022-02-15 13:40:32,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:32,513 INFO L470 AbstractCegarLoop]: Abstraction has 4183 states and 11326 transitions. [2022-02-15 13:40:32,513 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) [2022-02-15 13:40:32,514 INFO L276 IsEmpty]: Start isEmpty. Operand 4183 states and 11326 transitions. [2022-02-15 13:40:32,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:32,521 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:32,521 INFO L514 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] [2022-02-15 13:40:32,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 13:40:32,521 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:32,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:32,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1666269088, now seen corresponding path program 7 times [2022-02-15 13:40:32,522 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:32,522 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531927083] [2022-02-15 13:40:32,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:32,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:32,670 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:32,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531927083] [2022-02-15 13:40:32,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531927083] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:32,670 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:32,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 13:40:32,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47225152] [2022-02-15 13:40:32,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:32,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:40:32,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:32,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:40:32,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:32,671 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) [2022-02-15 13:40:32,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:32,901 INFO L93 Difference]: Finished difference Result 4936 states and 13167 transitions. [2022-02-15 13:40:32,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 13:40:32,901 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 [2022-02-15 13:40:32,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:32,909 INFO L225 Difference]: With dead ends: 4936 [2022-02-15 13:40:32,935 INFO L226 Difference]: Without dead ends: 4673 [2022-02-15 13:40:32,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-15 13:40:32,937 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 94 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:32,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 531 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:40:32,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4673 states. [2022-02-15 13:40:32,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4673 to 4123. [2022-02-15 13:40:32,984 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) [2022-02-15 13:40:32,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4123 states to 4123 states and 11170 transitions. [2022-02-15 13:40:32,990 INFO L78 Accepts]: Start accepts. Automaton has 4123 states and 11170 transitions. Word has length 48 [2022-02-15 13:40:32,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:32,990 INFO L470 AbstractCegarLoop]: Abstraction has 4123 states and 11170 transitions. [2022-02-15 13:40:32,990 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) [2022-02-15 13:40:32,991 INFO L276 IsEmpty]: Start isEmpty. Operand 4123 states and 11170 transitions. [2022-02-15 13:40:32,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:32,996 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:32,996 INFO L514 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] [2022-02-15 13:40:32,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 13:40:32,997 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:32,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:32,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1335436040, now seen corresponding path program 8 times [2022-02-15 13:40:32,997 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:32,997 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229858535] [2022-02-15 13:40:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:32,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:33,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:33,013 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:33,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229858535] [2022-02-15 13:40:33,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229858535] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:33,013 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:33,013 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 13:40:33,013 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734255581] [2022-02-15 13:40:33,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:33,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 13:40:33,014 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:33,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 13:40:33,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 13:40:33,014 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) [2022-02-15 13:40:33,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:33,032 INFO L93 Difference]: Finished difference Result 4069 states and 10790 transitions. [2022-02-15 13:40:33,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 13:40:33,032 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 [2022-02-15 13:40:33,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:33,039 INFO L225 Difference]: With dead ends: 4069 [2022-02-15 13:40:33,039 INFO L226 Difference]: Without dead ends: 4069 [2022-02-15 13:40:33,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 13:40:33,040 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 19 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:33,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 100 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:40:33,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4069 states. [2022-02-15 13:40:33,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4069 to 4069. [2022-02-15 13:40:33,098 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) [2022-02-15 13:40:33,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 10790 transitions. [2022-02-15 13:40:33,103 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 10790 transitions. Word has length 48 [2022-02-15 13:40:33,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:33,104 INFO L470 AbstractCegarLoop]: Abstraction has 4069 states and 10790 transitions. [2022-02-15 13:40:33,104 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) [2022-02-15 13:40:33,104 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 10790 transitions. [2022-02-15 13:40:33,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:33,109 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:33,110 INFO L514 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] [2022-02-15 13:40:33,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 13:40:33,110 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:33,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:33,110 INFO L85 PathProgramCache]: Analyzing trace with hash 295340824, now seen corresponding path program 9 times [2022-02-15 13:40:33,110 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:33,110 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778291660] [2022-02-15 13:40:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:33,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:33,238 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:33,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778291660] [2022-02-15 13:40:33,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778291660] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:33,238 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:33,238 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 13:40:33,238 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711762623] [2022-02-15 13:40:33,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:33,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 13:40:33,239 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:33,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 13:40:33,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:40:33,239 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) [2022-02-15 13:40:33,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:33,675 INFO L93 Difference]: Finished difference Result 5461 states and 14265 transitions. [2022-02-15 13:40:33,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 13:40:33,676 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 [2022-02-15 13:40:33,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:33,686 INFO L225 Difference]: With dead ends: 5461 [2022-02-15 13:40:33,686 INFO L226 Difference]: Without dead ends: 4771 [2022-02-15 13:40:33,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-02-15 13:40:33,687 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 238 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:33,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 1006 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 13:40:33,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2022-02-15 13:40:33,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 4096. [2022-02-15 13:40:33,744 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) [2022-02-15 13:40:33,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4096 states to 4096 states and 10832 transitions. [2022-02-15 13:40:33,750 INFO L78 Accepts]: Start accepts. Automaton has 4096 states and 10832 transitions. Word has length 48 [2022-02-15 13:40:33,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:33,750 INFO L470 AbstractCegarLoop]: Abstraction has 4096 states and 10832 transitions. [2022-02-15 13:40:33,750 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) [2022-02-15 13:40:33,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4096 states and 10832 transitions. [2022-02-15 13:40:33,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:33,755 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:33,755 INFO L514 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] [2022-02-15 13:40:33,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 13:40:33,755 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:33,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:33,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1370634948, now seen corresponding path program 10 times [2022-02-15 13:40:33,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:33,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383137268] [2022-02-15 13:40:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:33,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:33,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:33,854 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:33,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383137268] [2022-02-15 13:40:33,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383137268] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:33,854 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:33,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 13:40:33,855 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071887624] [2022-02-15 13:40:33,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:33,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:40:33,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:33,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:40:33,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:33,855 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) [2022-02-15 13:40:34,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:34,099 INFO L93 Difference]: Finished difference Result 5181 states and 13412 transitions. [2022-02-15 13:40:34,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 13:40:34,099 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 [2022-02-15 13:40:34,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:34,107 INFO L225 Difference]: With dead ends: 5181 [2022-02-15 13:40:34,107 INFO L226 Difference]: Without dead ends: 4981 [2022-02-15 13:40:34,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:34,108 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 99 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:34,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 612 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:40:34,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4981 states. [2022-02-15 13:40:34,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4981 to 4118. [2022-02-15 13:40:34,154 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) [2022-02-15 13:40:34,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4118 states to 4118 states and 10879 transitions. [2022-02-15 13:40:34,160 INFO L78 Accepts]: Start accepts. Automaton has 4118 states and 10879 transitions. Word has length 48 [2022-02-15 13:40:34,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:34,160 INFO L470 AbstractCegarLoop]: Abstraction has 4118 states and 10879 transitions. [2022-02-15 13:40:34,160 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) [2022-02-15 13:40:34,160 INFO L276 IsEmpty]: Start isEmpty. Operand 4118 states and 10879 transitions. [2022-02-15 13:40:34,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:34,165 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:34,165 INFO L514 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] [2022-02-15 13:40:34,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 13:40:34,165 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:34,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:34,165 INFO L85 PathProgramCache]: Analyzing trace with hash -553975100, now seen corresponding path program 11 times [2022-02-15 13:40:34,165 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:34,165 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277387166] [2022-02-15 13:40:34,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:34,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:34,265 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:34,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277387166] [2022-02-15 13:40:34,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277387166] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:34,265 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:34,265 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 13:40:34,265 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79761013] [2022-02-15 13:40:34,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:34,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:40:34,265 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:34,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:40:34,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:34,266 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) [2022-02-15 13:40:34,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:34,615 INFO L93 Difference]: Finished difference Result 8210 states and 22046 transitions. [2022-02-15 13:40:34,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 13:40:34,615 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 [2022-02-15 13:40:34,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:34,627 INFO L225 Difference]: With dead ends: 8210 [2022-02-15 13:40:34,627 INFO L226 Difference]: Without dead ends: 8154 [2022-02-15 13:40:34,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2022-02-15 13:40:34,628 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 295 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:34,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 444 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:40:34,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8154 states. [2022-02-15 13:40:34,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8154 to 5049. [2022-02-15 13:40:34,714 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) [2022-02-15 13:40:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5049 states to 5049 states and 13418 transitions. [2022-02-15 13:40:34,724 INFO L78 Accepts]: Start accepts. Automaton has 5049 states and 13418 transitions. Word has length 48 [2022-02-15 13:40:34,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:34,724 INFO L470 AbstractCegarLoop]: Abstraction has 5049 states and 13418 transitions. [2022-02-15 13:40:34,724 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) [2022-02-15 13:40:34,724 INFO L276 IsEmpty]: Start isEmpty. Operand 5049 states and 13418 transitions. [2022-02-15 13:40:34,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:34,731 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:34,731 INFO L514 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] [2022-02-15 13:40:34,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 13:40:34,732 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:34,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash 747293282, now seen corresponding path program 12 times [2022-02-15 13:40:34,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:34,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729084536] [2022-02-15 13:40:34,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:34,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:34,857 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:34,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729084536] [2022-02-15 13:40:34,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729084536] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:34,857 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:34,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 13:40:34,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839903688] [2022-02-15 13:40:34,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:34,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:40:34,858 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:34,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:40:34,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:34,858 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) [2022-02-15 13:40:35,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:35,385 INFO L93 Difference]: Finished difference Result 11648 states and 30689 transitions. [2022-02-15 13:40:35,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 13:40:35,386 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 [2022-02-15 13:40:35,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:35,401 INFO L225 Difference]: With dead ends: 11648 [2022-02-15 13:40:35,401 INFO L226 Difference]: Without dead ends: 11150 [2022-02-15 13:40:35,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2022-02-15 13:40:35,402 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 415 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:35,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 767 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 13:40:35,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11150 states. [2022-02-15 13:40:35,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11150 to 5804. [2022-02-15 13:40:35,501 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) [2022-02-15 13:40:35,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5804 states to 5804 states and 15408 transitions. [2022-02-15 13:40:35,510 INFO L78 Accepts]: Start accepts. Automaton has 5804 states and 15408 transitions. Word has length 48 [2022-02-15 13:40:35,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:35,511 INFO L470 AbstractCegarLoop]: Abstraction has 5804 states and 15408 transitions. [2022-02-15 13:40:35,511 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) [2022-02-15 13:40:35,511 INFO L276 IsEmpty]: Start isEmpty. Operand 5804 states and 15408 transitions. [2022-02-15 13:40:35,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:35,519 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:35,519 INFO L514 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] [2022-02-15 13:40:35,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 13:40:35,519 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:35,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:35,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1347166720, now seen corresponding path program 13 times [2022-02-15 13:40:35,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:35,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824587324] [2022-02-15 13:40:35,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:35,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:35,637 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:35,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824587324] [2022-02-15 13:40:35,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824587324] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:35,637 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:35,637 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 13:40:35,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949513246] [2022-02-15 13:40:35,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:35,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:40:35,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:35,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:40:35,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:35,638 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) [2022-02-15 13:40:35,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:35,986 INFO L93 Difference]: Finished difference Result 9870 states and 26315 transitions. [2022-02-15 13:40:35,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 13:40:35,986 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 [2022-02-15 13:40:35,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:36,000 INFO L225 Difference]: With dead ends: 9870 [2022-02-15 13:40:36,001 INFO L226 Difference]: Without dead ends: 9834 [2022-02-15 13:40:36,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2022-02-15 13:40:36,001 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 327 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:36,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 497 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:40:36,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9834 states. [2022-02-15 13:40:36,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9834 to 5331. [2022-02-15 13:40:36,089 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) [2022-02-15 13:40:36,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5331 states to 5331 states and 14108 transitions. [2022-02-15 13:40:36,097 INFO L78 Accepts]: Start accepts. Automaton has 5331 states and 14108 transitions. Word has length 48 [2022-02-15 13:40:36,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:36,097 INFO L470 AbstractCegarLoop]: Abstraction has 5331 states and 14108 transitions. [2022-02-15 13:40:36,097 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) [2022-02-15 13:40:36,097 INFO L276 IsEmpty]: Start isEmpty. Operand 5331 states and 14108 transitions. [2022-02-15 13:40:36,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:36,104 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:36,104 INFO L514 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] [2022-02-15 13:40:36,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 13:40:36,104 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:36,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:36,104 INFO L85 PathProgramCache]: Analyzing trace with hash -45898338, now seen corresponding path program 14 times [2022-02-15 13:40:36,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:36,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183863072] [2022-02-15 13:40:36,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:36,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:36,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:36,232 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:36,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183863072] [2022-02-15 13:40:36,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183863072] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:36,232 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:36,232 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 13:40:36,232 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329196086] [2022-02-15 13:40:36,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:36,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:40:36,233 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:36,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:40:36,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:36,234 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) [2022-02-15 13:40:36,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:36,698 INFO L93 Difference]: Finished difference Result 8998 states and 23221 transitions. [2022-02-15 13:40:36,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 13:40:36,699 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 [2022-02-15 13:40:36,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:36,709 INFO L225 Difference]: With dead ends: 8998 [2022-02-15 13:40:36,710 INFO L226 Difference]: Without dead ends: 8501 [2022-02-15 13:40:36,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2022-02-15 13:40:36,712 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 381 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:36,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 785 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 13:40:36,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8501 states. [2022-02-15 13:40:36,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8501 to 5351. [2022-02-15 13:40:36,791 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) [2022-02-15 13:40:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5351 states to 5351 states and 14108 transitions. [2022-02-15 13:40:36,800 INFO L78 Accepts]: Start accepts. Automaton has 5351 states and 14108 transitions. Word has length 48 [2022-02-15 13:40:36,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:36,800 INFO L470 AbstractCegarLoop]: Abstraction has 5351 states and 14108 transitions. [2022-02-15 13:40:36,800 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) [2022-02-15 13:40:36,800 INFO L276 IsEmpty]: Start isEmpty. Operand 5351 states and 14108 transitions. [2022-02-15 13:40:36,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:36,812 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:36,812 INFO L514 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] [2022-02-15 13:40:36,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 13:40:36,812 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:36,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:36,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1579103546, now seen corresponding path program 15 times [2022-02-15 13:40:36,813 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:36,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016307911] [2022-02-15 13:40:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:36,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:36,950 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:36,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016307911] [2022-02-15 13:40:36,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016307911] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:36,950 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:36,950 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 13:40:36,950 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352840549] [2022-02-15 13:40:36,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:36,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 13:40:36,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:36,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 13:40:36,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-15 13:40:36,951 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) [2022-02-15 13:40:37,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:37,229 INFO L93 Difference]: Finished difference Result 6555 states and 17126 transitions. [2022-02-15 13:40:37,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 13:40:37,229 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 [2022-02-15 13:40:37,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:37,238 INFO L225 Difference]: With dead ends: 6555 [2022-02-15 13:40:37,239 INFO L226 Difference]: Without dead ends: 6445 [2022-02-15 13:40:37,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-02-15 13:40:37,239 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 148 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:37,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 668 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:40:37,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6445 states. [2022-02-15 13:40:37,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6445 to 5348. [2022-02-15 13:40:37,301 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) [2022-02-15 13:40:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5348 states to 5348 states and 14097 transitions. [2022-02-15 13:40:37,308 INFO L78 Accepts]: Start accepts. Automaton has 5348 states and 14097 transitions. Word has length 48 [2022-02-15 13:40:37,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:37,308 INFO L470 AbstractCegarLoop]: Abstraction has 5348 states and 14097 transitions. [2022-02-15 13:40:37,308 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) [2022-02-15 13:40:37,309 INFO L276 IsEmpty]: Start isEmpty. Operand 5348 states and 14097 transitions. [2022-02-15 13:40:37,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:37,314 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:37,314 INFO L514 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] [2022-02-15 13:40:37,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 13:40:37,314 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:37,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:37,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1293913202, now seen corresponding path program 16 times [2022-02-15 13:40:37,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:37,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046334401] [2022-02-15 13:40:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:37,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:37,399 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:37,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046334401] [2022-02-15 13:40:37,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046334401] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:37,399 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:37,399 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 13:40:37,399 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834580184] [2022-02-15 13:40:37,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:37,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:40:37,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:37,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:40:37,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:37,400 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) [2022-02-15 13:40:37,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:37,618 INFO L93 Difference]: Finished difference Result 6530 states and 17001 transitions. [2022-02-15 13:40:37,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 13:40:37,618 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 [2022-02-15 13:40:37,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:37,627 INFO L225 Difference]: With dead ends: 6530 [2022-02-15 13:40:37,627 INFO L226 Difference]: Without dead ends: 6530 [2022-02-15 13:40:37,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-02-15 13:40:37,628 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 151 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:37,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 455 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:40:37,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6530 states. [2022-02-15 13:40:37,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6530 to 5760. [2022-02-15 13:40:37,694 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) [2022-02-15 13:40:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5760 states to 5760 states and 15094 transitions. [2022-02-15 13:40:37,703 INFO L78 Accepts]: Start accepts. Automaton has 5760 states and 15094 transitions. Word has length 48 [2022-02-15 13:40:37,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:37,703 INFO L470 AbstractCegarLoop]: Abstraction has 5760 states and 15094 transitions. [2022-02-15 13:40:37,703 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) [2022-02-15 13:40:37,703 INFO L276 IsEmpty]: Start isEmpty. Operand 5760 states and 15094 transitions. [2022-02-15 13:40:37,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:37,710 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:37,710 INFO L514 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] [2022-02-15 13:40:37,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 13:40:37,710 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:37,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:37,711 INFO L85 PathProgramCache]: Analyzing trace with hash -177172490, now seen corresponding path program 17 times [2022-02-15 13:40:37,711 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:37,711 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422752078] [2022-02-15 13:40:37,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:37,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:37,818 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:37,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422752078] [2022-02-15 13:40:37,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422752078] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:37,818 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:37,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 13:40:37,819 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359609880] [2022-02-15 13:40:37,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:37,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 13:40:37,819 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:37,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 13:40:37,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-15 13:40:37,819 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) [2022-02-15 13:40:38,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:38,031 INFO L93 Difference]: Finished difference Result 6338 states and 16514 transitions. [2022-02-15 13:40:38,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 13:40:38,031 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 [2022-02-15 13:40:38,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:38,040 INFO L225 Difference]: With dead ends: 6338 [2022-02-15 13:40:38,041 INFO L226 Difference]: Without dead ends: 6338 [2022-02-15 13:40:38,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-15 13:40:38,042 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 140 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:38,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 551 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:40:38,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6338 states. [2022-02-15 13:40:38,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6338 to 5670. [2022-02-15 13:40:38,139 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) [2022-02-15 13:40:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 14852 transitions. [2022-02-15 13:40:38,148 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 14852 transitions. Word has length 48 [2022-02-15 13:40:38,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:38,148 INFO L470 AbstractCegarLoop]: Abstraction has 5670 states and 14852 transitions. [2022-02-15 13:40:38,149 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) [2022-02-15 13:40:38,149 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 14852 transitions. [2022-02-15 13:40:38,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:38,155 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:38,155 INFO L514 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] [2022-02-15 13:40:38,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 13:40:38,156 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:38,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:38,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1316938584, now seen corresponding path program 18 times [2022-02-15 13:40:38,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:38,156 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132354976] [2022-02-15 13:40:38,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:38,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:38,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:38,286 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:38,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132354976] [2022-02-15 13:40:38,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132354976] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:38,286 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:38,286 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 13:40:38,286 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303321749] [2022-02-15 13:40:38,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:38,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 13:40:38,287 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:38,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 13:40:38,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-02-15 13:40:38,287 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) [2022-02-15 13:40:38,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:38,588 INFO L93 Difference]: Finished difference Result 6546 states and 16992 transitions. [2022-02-15 13:40:38,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 13:40:38,588 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 [2022-02-15 13:40:38,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:38,596 INFO L225 Difference]: With dead ends: 6546 [2022-02-15 13:40:38,596 INFO L226 Difference]: Without dead ends: 6321 [2022-02-15 13:40:38,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-02-15 13:40:38,597 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 175 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:38,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 725 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 13:40:38,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6321 states. [2022-02-15 13:40:38,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6321 to 5544. [2022-02-15 13:40:38,660 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) [2022-02-15 13:40:38,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5544 states to 5544 states and 14529 transitions. [2022-02-15 13:40:38,668 INFO L78 Accepts]: Start accepts. Automaton has 5544 states and 14529 transitions. Word has length 48 [2022-02-15 13:40:38,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:38,668 INFO L470 AbstractCegarLoop]: Abstraction has 5544 states and 14529 transitions. [2022-02-15 13:40:38,668 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) [2022-02-15 13:40:38,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5544 states and 14529 transitions. [2022-02-15 13:40:38,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:38,674 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:38,674 INFO L514 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] [2022-02-15 13:40:38,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 13:40:38,674 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:38,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:38,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1828987838, now seen corresponding path program 19 times [2022-02-15 13:40:38,675 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:38,675 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769291429] [2022-02-15 13:40:38,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:38,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:38,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:38,729 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:38,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769291429] [2022-02-15 13:40:38,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769291429] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:38,730 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:38,730 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:38,730 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109940318] [2022-02-15 13:40:38,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:38,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:38,731 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:38,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:38,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:38,731 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) [2022-02-15 13:40:38,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:38,869 INFO L93 Difference]: Finished difference Result 6928 states and 17758 transitions. [2022-02-15 13:40:38,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 13:40:38,878 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 [2022-02-15 13:40:38,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:38,886 INFO L225 Difference]: With dead ends: 6928 [2022-02-15 13:40:38,886 INFO L226 Difference]: Without dead ends: 6370 [2022-02-15 13:40:38,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2022-02-15 13:40:38,887 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 188 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:38,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 265 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:38,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6370 states. [2022-02-15 13:40:38,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6370 to 4622. [2022-02-15 13:40:38,964 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) [2022-02-15 13:40:38,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4622 states to 4622 states and 11858 transitions. [2022-02-15 13:40:38,971 INFO L78 Accepts]: Start accepts. Automaton has 4622 states and 11858 transitions. Word has length 48 [2022-02-15 13:40:38,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:38,971 INFO L470 AbstractCegarLoop]: Abstraction has 4622 states and 11858 transitions. [2022-02-15 13:40:38,971 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) [2022-02-15 13:40:38,971 INFO L276 IsEmpty]: Start isEmpty. Operand 4622 states and 11858 transitions. [2022-02-15 13:40:38,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:38,976 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:38,976 INFO L514 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] [2022-02-15 13:40:38,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 13:40:38,976 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:38,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:38,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1131191936, now seen corresponding path program 20 times [2022-02-15 13:40:38,977 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:38,977 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160465298] [2022-02-15 13:40:38,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:38,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:39,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:39,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:39,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160465298] [2022-02-15 13:40:39,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160465298] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:39,081 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:39,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:39,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531378850] [2022-02-15 13:40:39,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:39,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:39,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:39,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:39,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:39,082 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) [2022-02-15 13:40:39,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:39,292 INFO L93 Difference]: Finished difference Result 7191 states and 18346 transitions. [2022-02-15 13:40:39,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 13:40:39,292 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 [2022-02-15 13:40:39,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:39,301 INFO L225 Difference]: With dead ends: 7191 [2022-02-15 13:40:39,301 INFO L226 Difference]: Without dead ends: 7072 [2022-02-15 13:40:39,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:40:39,302 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 332 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:39,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 299 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:39,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7072 states. [2022-02-15 13:40:39,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7072 to 4582. [2022-02-15 13:40:39,380 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) [2022-02-15 13:40:39,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4582 states to 4582 states and 11755 transitions. [2022-02-15 13:40:39,389 INFO L78 Accepts]: Start accepts. Automaton has 4582 states and 11755 transitions. Word has length 48 [2022-02-15 13:40:39,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:39,389 INFO L470 AbstractCegarLoop]: Abstraction has 4582 states and 11755 transitions. [2022-02-15 13:40:39,389 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) [2022-02-15 13:40:39,389 INFO L276 IsEmpty]: Start isEmpty. Operand 4582 states and 11755 transitions. [2022-02-15 13:40:39,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:39,395 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:39,395 INFO L514 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] [2022-02-15 13:40:39,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 13:40:39,395 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:39,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:39,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1924383556, now seen corresponding path program 21 times [2022-02-15 13:40:39,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:39,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20998749] [2022-02-15 13:40:39,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:39,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:39,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:39,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20998749] [2022-02-15 13:40:39,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20998749] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:39,466 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:39,467 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:39,467 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950754556] [2022-02-15 13:40:39,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:39,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:39,467 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:39,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:39,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:39,468 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) [2022-02-15 13:40:39,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:39,716 INFO L93 Difference]: Finished difference Result 6635 states and 16818 transitions. [2022-02-15 13:40:39,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-15 13:40:39,716 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 [2022-02-15 13:40:39,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:39,725 INFO L225 Difference]: With dead ends: 6635 [2022-02-15 13:40:39,725 INFO L226 Difference]: Without dead ends: 6505 [2022-02-15 13:40:39,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=109, Unknown=0, NotChecked=0, Total=182 [2022-02-15 13:40:39,726 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 371 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:39,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 316 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:39,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6505 states. [2022-02-15 13:40:39,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6505 to 4456. [2022-02-15 13:40:39,779 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) [2022-02-15 13:40:39,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 11441 transitions. [2022-02-15 13:40:39,785 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 11441 transitions. Word has length 48 [2022-02-15 13:40:39,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:39,785 INFO L470 AbstractCegarLoop]: Abstraction has 4456 states and 11441 transitions. [2022-02-15 13:40:39,785 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) [2022-02-15 13:40:39,785 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 11441 transitions. [2022-02-15 13:40:39,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:39,790 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:39,790 INFO L514 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] [2022-02-15 13:40:39,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 13:40:39,790 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:39,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:39,790 INFO L85 PathProgramCache]: Analyzing trace with hash 459405858, now seen corresponding path program 22 times [2022-02-15 13:40:39,791 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:39,791 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446373432] [2022-02-15 13:40:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:39,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:39,885 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:39,886 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446373432] [2022-02-15 13:40:39,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446373432] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:39,886 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:39,886 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:39,886 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018944688] [2022-02-15 13:40:39,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:39,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:39,886 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:39,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:39,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:39,887 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) [2022-02-15 13:40:40,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:40,253 INFO L93 Difference]: Finished difference Result 8820 states and 22452 transitions. [2022-02-15 13:40:40,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 13:40:40,253 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 [2022-02-15 13:40:40,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:40,265 INFO L225 Difference]: With dead ends: 8820 [2022-02-15 13:40:40,265 INFO L226 Difference]: Without dead ends: 8563 [2022-02-15 13:40:40,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-02-15 13:40:40,266 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 310 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:40,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 608 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:40:40,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8563 states. [2022-02-15 13:40:40,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8563 to 4297. [2022-02-15 13:40:40,333 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) [2022-02-15 13:40:40,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 11066 transitions. [2022-02-15 13:40:40,340 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 11066 transitions. Word has length 48 [2022-02-15 13:40:40,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:40,340 INFO L470 AbstractCegarLoop]: Abstraction has 4297 states and 11066 transitions. [2022-02-15 13:40:40,340 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) [2022-02-15 13:40:40,340 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 11066 transitions. [2022-02-15 13:40:40,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:40,345 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:40,345 INFO L514 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] [2022-02-15 13:40:40,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 13:40:40,346 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:40,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:40,346 INFO L85 PathProgramCache]: Analyzing trace with hash -594454732, now seen corresponding path program 23 times [2022-02-15 13:40:40,346 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:40,346 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449832448] [2022-02-15 13:40:40,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:40,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:40,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:40,439 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:40,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449832448] [2022-02-15 13:40:40,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449832448] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:40,439 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:40,440 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 13:40:40,440 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64856467] [2022-02-15 13:40:40,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:40,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 13:40:40,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:40,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 13:40:40,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-15 13:40:40,440 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) [2022-02-15 13:40:40,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:40,694 INFO L93 Difference]: Finished difference Result 6214 states and 15820 transitions. [2022-02-15 13:40:40,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 13:40:40,694 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 [2022-02-15 13:40:40,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:40,729 INFO L225 Difference]: With dead ends: 6214 [2022-02-15 13:40:40,729 INFO L226 Difference]: Without dead ends: 5870 [2022-02-15 13:40:40,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-02-15 13:40:40,730 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 274 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:40,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 469 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:40:40,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5870 states. [2022-02-15 13:40:40,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5870 to 4538. [2022-02-15 13:40:40,777 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) [2022-02-15 13:40:40,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4538 states to 4538 states and 11737 transitions. [2022-02-15 13:40:40,784 INFO L78 Accepts]: Start accepts. Automaton has 4538 states and 11737 transitions. Word has length 48 [2022-02-15 13:40:40,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:40,785 INFO L470 AbstractCegarLoop]: Abstraction has 4538 states and 11737 transitions. [2022-02-15 13:40:40,785 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) [2022-02-15 13:40:40,785 INFO L276 IsEmpty]: Start isEmpty. Operand 4538 states and 11737 transitions. [2022-02-15 13:40:40,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:40,790 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:40,790 INFO L514 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] [2022-02-15 13:40:40,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 13:40:40,791 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:40,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:40,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1537564694, now seen corresponding path program 24 times [2022-02-15 13:40:40,791 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:40,791 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964029933] [2022-02-15 13:40:40,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:40,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:40,882 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:40,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964029933] [2022-02-15 13:40:40,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964029933] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:40,882 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:40,882 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 13:40:40,882 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815761972] [2022-02-15 13:40:40,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:40,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:40:40,883 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:40,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:40:40,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:40,883 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) [2022-02-15 13:40:41,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:41,109 INFO L93 Difference]: Finished difference Result 5013 states and 12811 transitions. [2022-02-15 13:40:41,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 13:40:41,110 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 [2022-02-15 13:40:41,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:41,116 INFO L225 Difference]: With dead ends: 5013 [2022-02-15 13:40:41,116 INFO L226 Difference]: Without dead ends: 4694 [2022-02-15 13:40:41,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-15 13:40:41,117 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 132 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:41,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 572 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:40:41,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2022-02-15 13:40:41,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4393. [2022-02-15 13:40:41,158 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) [2022-02-15 13:40:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4393 states to 4393 states and 11398 transitions. [2022-02-15 13:40:41,164 INFO L78 Accepts]: Start accepts. Automaton has 4393 states and 11398 transitions. Word has length 48 [2022-02-15 13:40:41,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:41,164 INFO L470 AbstractCegarLoop]: Abstraction has 4393 states and 11398 transitions. [2022-02-15 13:40:41,164 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) [2022-02-15 13:40:41,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4393 states and 11398 transitions. [2022-02-15 13:40:41,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:41,169 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:41,169 INFO L514 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] [2022-02-15 13:40:41,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 13:40:41,169 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:41,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:41,169 INFO L85 PathProgramCache]: Analyzing trace with hash 937439520, now seen corresponding path program 25 times [2022-02-15 13:40:41,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:41,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424265990] [2022-02-15 13:40:41,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:41,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:41,179 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:41,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424265990] [2022-02-15 13:40:41,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424265990] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:41,180 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:41,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 13:40:41,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388403989] [2022-02-15 13:40:41,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:41,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 13:40:41,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:41,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 13:40:41,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 13:40:41,181 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) [2022-02-15 13:40:41,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:41,198 INFO L93 Difference]: Finished difference Result 4113 states and 10353 transitions. [2022-02-15 13:40:41,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 13:40:41,198 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 [2022-02-15 13:40:41,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:41,202 INFO L225 Difference]: With dead ends: 4113 [2022-02-15 13:40:41,202 INFO L226 Difference]: Without dead ends: 4113 [2022-02-15 13:40:41,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 13:40:41,203 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 20 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:41,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 100 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:40:41,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4113 states. [2022-02-15 13:40:41,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4113 to 4015. [2022-02-15 13:40:41,236 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) [2022-02-15 13:40:41,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4015 states to 4015 states and 10120 transitions. [2022-02-15 13:40:41,241 INFO L78 Accepts]: Start accepts. Automaton has 4015 states and 10120 transitions. Word has length 48 [2022-02-15 13:40:41,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:41,241 INFO L470 AbstractCegarLoop]: Abstraction has 4015 states and 10120 transitions. [2022-02-15 13:40:41,241 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) [2022-02-15 13:40:41,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4015 states and 10120 transitions. [2022-02-15 13:40:41,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:41,246 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:41,246 INFO L514 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] [2022-02-15 13:40:41,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 13:40:41,246 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:41,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:41,246 INFO L85 PathProgramCache]: Analyzing trace with hash -242687168, now seen corresponding path program 26 times [2022-02-15 13:40:41,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:41,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062756595] [2022-02-15 13:40:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:41,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:41,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:41,310 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:41,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062756595] [2022-02-15 13:40:41,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062756595] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:41,310 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:41,310 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:41,310 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363600724] [2022-02-15 13:40:41,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:41,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:41,311 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:41,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:41,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:41,311 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) [2022-02-15 13:40:41,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:41,479 INFO L93 Difference]: Finished difference Result 4577 states and 11379 transitions. [2022-02-15 13:40:41,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 13:40:41,479 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 [2022-02-15 13:40:41,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:41,485 INFO L225 Difference]: With dead ends: 4577 [2022-02-15 13:40:41,485 INFO L226 Difference]: Without dead ends: 4237 [2022-02-15 13:40:41,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:40:41,486 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 209 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:41,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 677 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:41,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4237 states. [2022-02-15 13:40:41,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4237 to 3927. [2022-02-15 13:40:41,527 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) [2022-02-15 13:40:41,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 9839 transitions. [2022-02-15 13:40:41,534 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 9839 transitions. Word has length 48 [2022-02-15 13:40:41,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:41,534 INFO L470 AbstractCegarLoop]: Abstraction has 3927 states and 9839 transitions. [2022-02-15 13:40:41,534 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) [2022-02-15 13:40:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 9839 transitions. [2022-02-15 13:40:41,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:41,538 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:41,538 INFO L514 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] [2022-02-15 13:40:41,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 13:40:41,538 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:41,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:41,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1509006252, now seen corresponding path program 27 times [2022-02-15 13:40:41,539 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:41,539 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667497430] [2022-02-15 13:40:41,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:41,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:41,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:41,634 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:41,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667497430] [2022-02-15 13:40:41,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667497430] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:41,634 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:41,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 13:40:41,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424024324] [2022-02-15 13:40:41,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:41,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:40:41,634 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:41,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:40:41,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:41,635 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) [2022-02-15 13:40:41,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:41,926 INFO L93 Difference]: Finished difference Result 5865 states and 14506 transitions. [2022-02-15 13:40:41,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 13:40:41,927 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 [2022-02-15 13:40:41,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:41,933 INFO L225 Difference]: With dead ends: 5865 [2022-02-15 13:40:41,933 INFO L226 Difference]: Without dead ends: 5707 [2022-02-15 13:40:41,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-02-15 13:40:41,935 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 186 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:41,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 479 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:40:41,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states. [2022-02-15 13:40:42,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 3945. [2022-02-15 13:40:42,006 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) [2022-02-15 13:40:42,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3945 states to 3945 states and 9878 transitions. [2022-02-15 13:40:42,011 INFO L78 Accepts]: Start accepts. Automaton has 3945 states and 9878 transitions. Word has length 48 [2022-02-15 13:40:42,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:42,011 INFO L470 AbstractCegarLoop]: Abstraction has 3945 states and 9878 transitions. [2022-02-15 13:40:42,011 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) [2022-02-15 13:40:42,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3945 states and 9878 transitions. [2022-02-15 13:40:42,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:42,015 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:42,016 INFO L514 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] [2022-02-15 13:40:42,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 13:40:42,016 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:42,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:42,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2137253948, now seen corresponding path program 28 times [2022-02-15 13:40:42,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:42,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872868659] [2022-02-15 13:40:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:42,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:42,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:42,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:42,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872868659] [2022-02-15 13:40:42,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872868659] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:42,108 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:42,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 13:40:42,109 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104342114] [2022-02-15 13:40:42,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:42,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 13:40:42,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:42,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 13:40:42,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:42,110 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) [2022-02-15 13:40:42,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:42,282 INFO L93 Difference]: Finished difference Result 5688 states and 14152 transitions. [2022-02-15 13:40:42,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 13:40:42,282 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 [2022-02-15 13:40:42,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:42,289 INFO L225 Difference]: With dead ends: 5688 [2022-02-15 13:40:42,289 INFO L226 Difference]: Without dead ends: 5624 [2022-02-15 13:40:42,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:42,291 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 147 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:42,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 247 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:42,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5624 states. [2022-02-15 13:40:42,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5624 to 4396. [2022-02-15 13:40:42,346 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) [2022-02-15 13:40:42,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 11000 transitions. [2022-02-15 13:40:42,353 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 11000 transitions. Word has length 48 [2022-02-15 13:40:42,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:42,353 INFO L470 AbstractCegarLoop]: Abstraction has 4396 states and 11000 transitions. [2022-02-15 13:40:42,353 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) [2022-02-15 13:40:42,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 11000 transitions. [2022-02-15 13:40:42,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:42,357 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:42,358 INFO L514 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] [2022-02-15 13:40:42,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 13:40:42,358 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:42,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:42,358 INFO L85 PathProgramCache]: Analyzing trace with hash 2015834850, now seen corresponding path program 29 times [2022-02-15 13:40:42,358 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:42,358 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706358172] [2022-02-15 13:40:42,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:42,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:42,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:42,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706358172] [2022-02-15 13:40:42,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706358172] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:42,447 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:42,447 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 13:40:42,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141773778] [2022-02-15 13:40:42,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:42,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 13:40:42,448 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:42,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 13:40:42,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:42,448 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) [2022-02-15 13:40:42,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:42,594 INFO L93 Difference]: Finished difference Result 4970 states and 12312 transitions. [2022-02-15 13:40:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 13:40:42,595 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 [2022-02-15 13:40:42,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:42,600 INFO L225 Difference]: With dead ends: 4970 [2022-02-15 13:40:42,600 INFO L226 Difference]: Without dead ends: 4772 [2022-02-15 13:40:42,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:42,604 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 181 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:42,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 221 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:42,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4772 states. [2022-02-15 13:40:42,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4772 to 4223. [2022-02-15 13:40:42,649 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) [2022-02-15 13:40:42,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4223 states to 4223 states and 10570 transitions. [2022-02-15 13:40:42,655 INFO L78 Accepts]: Start accepts. Automaton has 4223 states and 10570 transitions. Word has length 48 [2022-02-15 13:40:42,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:42,655 INFO L470 AbstractCegarLoop]: Abstraction has 4223 states and 10570 transitions. [2022-02-15 13:40:42,655 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) [2022-02-15 13:40:42,655 INFO L276 IsEmpty]: Start isEmpty. Operand 4223 states and 10570 transitions. [2022-02-15 13:40:42,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:42,660 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:42,660 INFO L514 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] [2022-02-15 13:40:42,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 13:40:42,660 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:42,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:42,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1768785176, now seen corresponding path program 30 times [2022-02-15 13:40:42,661 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:42,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525917811] [2022-02-15 13:40:42,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:42,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:42,724 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:42,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525917811] [2022-02-15 13:40:42,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525917811] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:42,725 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:42,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:42,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563160575] [2022-02-15 13:40:42,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:42,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:42,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:42,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:42,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:42,725 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) [2022-02-15 13:40:42,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:42,869 INFO L93 Difference]: Finished difference Result 4559 states and 11282 transitions. [2022-02-15 13:40:42,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 13:40:42,870 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 [2022-02-15 13:40:42,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:42,875 INFO L225 Difference]: With dead ends: 4559 [2022-02-15 13:40:42,875 INFO L226 Difference]: Without dead ends: 4465 [2022-02-15 13:40:42,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:40:42,876 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 190 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:42,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 675 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:42,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4465 states. [2022-02-15 13:40:42,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4465 to 4203. [2022-02-15 13:40:42,917 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) [2022-02-15 13:40:42,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4203 states to 4203 states and 10500 transitions. [2022-02-15 13:40:42,924 INFO L78 Accepts]: Start accepts. Automaton has 4203 states and 10500 transitions. Word has length 48 [2022-02-15 13:40:42,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:42,924 INFO L470 AbstractCegarLoop]: Abstraction has 4203 states and 10500 transitions. [2022-02-15 13:40:42,924 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) [2022-02-15 13:40:42,925 INFO L276 IsEmpty]: Start isEmpty. Operand 4203 states and 10500 transitions. [2022-02-15 13:40:42,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:42,929 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:42,929 INFO L514 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] [2022-02-15 13:40:42,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 13:40:42,930 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:42,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:42,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1173595316, now seen corresponding path program 31 times [2022-02-15 13:40:42,930 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:42,930 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372481015] [2022-02-15 13:40:42,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:42,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:42,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:42,990 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:42,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372481015] [2022-02-15 13:40:42,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372481015] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:42,991 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:42,991 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 13:40:42,991 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743204527] [2022-02-15 13:40:42,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:42,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 13:40:42,991 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:42,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 13:40:42,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:42,991 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) [2022-02-15 13:40:43,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:43,132 INFO L93 Difference]: Finished difference Result 4464 states and 11024 transitions. [2022-02-15 13:40:43,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 13:40:43,133 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 [2022-02-15 13:40:43,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:43,138 INFO L225 Difference]: With dead ends: 4464 [2022-02-15 13:40:43,138 INFO L226 Difference]: Without dead ends: 4402 [2022-02-15 13:40:43,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:43,139 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 111 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:43,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 277 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:43,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4402 states. [2022-02-15 13:40:43,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4402 to 4152. [2022-02-15 13:40:43,181 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) [2022-02-15 13:40:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4152 states to 4152 states and 10328 transitions. [2022-02-15 13:40:43,187 INFO L78 Accepts]: Start accepts. Automaton has 4152 states and 10328 transitions. Word has length 48 [2022-02-15 13:40:43,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:43,187 INFO L470 AbstractCegarLoop]: Abstraction has 4152 states and 10328 transitions. [2022-02-15 13:40:43,187 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) [2022-02-15 13:40:43,187 INFO L276 IsEmpty]: Start isEmpty. Operand 4152 states and 10328 transitions. [2022-02-15 13:40:43,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:43,192 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:43,192 INFO L514 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] [2022-02-15 13:40:43,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-15 13:40:43,192 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:43,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:43,192 INFO L85 PathProgramCache]: Analyzing trace with hash -684235422, now seen corresponding path program 32 times [2022-02-15 13:40:43,193 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:43,193 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863810596] [2022-02-15 13:40:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:43,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:43,294 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:43,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863810596] [2022-02-15 13:40:43,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863810596] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:43,294 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:43,294 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 13:40:43,294 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693207382] [2022-02-15 13:40:43,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:43,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 13:40:43,294 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:43,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 13:40:43,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:43,295 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) [2022-02-15 13:40:43,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:43,423 INFO L93 Difference]: Finished difference Result 4626 states and 11385 transitions. [2022-02-15 13:40:43,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 13:40:43,423 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 [2022-02-15 13:40:43,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:43,429 INFO L225 Difference]: With dead ends: 4626 [2022-02-15 13:40:43,429 INFO L226 Difference]: Without dead ends: 4558 [2022-02-15 13:40:43,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:43,429 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 145 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:43,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 212 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:43,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4558 states. [2022-02-15 13:40:43,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4558 to 4084. [2022-02-15 13:40:43,469 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) [2022-02-15 13:40:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4084 states to 4084 states and 10142 transitions. [2022-02-15 13:40:43,474 INFO L78 Accepts]: Start accepts. Automaton has 4084 states and 10142 transitions. Word has length 48 [2022-02-15 13:40:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:43,474 INFO L470 AbstractCegarLoop]: Abstraction has 4084 states and 10142 transitions. [2022-02-15 13:40:43,474 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) [2022-02-15 13:40:43,474 INFO L276 IsEmpty]: Start isEmpty. Operand 4084 states and 10142 transitions. [2022-02-15 13:40:43,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:43,478 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:43,478 INFO L514 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] [2022-02-15 13:40:43,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 13:40:43,478 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:43,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:43,479 INFO L85 PathProgramCache]: Analyzing trace with hash -826113920, now seen corresponding path program 33 times [2022-02-15 13:40:43,479 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:43,479 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315899574] [2022-02-15 13:40:43,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:43,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:43,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:43,559 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:43,559 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315899574] [2022-02-15 13:40:43,559 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315899574] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:43,559 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:43,559 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 13:40:43,559 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249883657] [2022-02-15 13:40:43,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:43,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 13:40:43,559 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:43,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 13:40:43,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:43,560 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) [2022-02-15 13:40:43,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:43,656 INFO L93 Difference]: Finished difference Result 4226 states and 10330 transitions. [2022-02-15 13:40:43,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 13:40:43,657 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 [2022-02-15 13:40:43,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:43,661 INFO L225 Difference]: With dead ends: 4226 [2022-02-15 13:40:43,661 INFO L226 Difference]: Without dead ends: 4031 [2022-02-15 13:40:43,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:43,661 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 164 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:43,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 256 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:43,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2022-02-15 13:40:43,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 3223. [2022-02-15 13:40:43,689 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) [2022-02-15 13:40:43,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 7965 transitions. [2022-02-15 13:40:43,693 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 7965 transitions. Word has length 48 [2022-02-15 13:40:43,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:43,693 INFO L470 AbstractCegarLoop]: Abstraction has 3223 states and 7965 transitions. [2022-02-15 13:40:43,693 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) [2022-02-15 13:40:43,693 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 7965 transitions. [2022-02-15 13:40:43,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:43,696 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:43,696 INFO L514 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] [2022-02-15 13:40:43,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-15 13:40:43,696 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:43,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:43,696 INFO L85 PathProgramCache]: Analyzing trace with hash -228992076, now seen corresponding path program 34 times [2022-02-15 13:40:43,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:43,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333026970] [2022-02-15 13:40:43,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:43,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:43,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:43,772 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:43,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333026970] [2022-02-15 13:40:43,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333026970] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:43,772 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:43,772 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 13:40:43,772 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104077379] [2022-02-15 13:40:43,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:43,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 13:40:43,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:43,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 13:40:43,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:43,773 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) [2022-02-15 13:40:43,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:43,862 INFO L93 Difference]: Finished difference Result 4115 states and 10071 transitions. [2022-02-15 13:40:43,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 13:40:43,862 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 [2022-02-15 13:40:43,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:43,866 INFO L225 Difference]: With dead ends: 4115 [2022-02-15 13:40:43,866 INFO L226 Difference]: Without dead ends: 4056 [2022-02-15 13:40:43,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:43,866 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 87 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:43,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 269 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:43,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4056 states. [2022-02-15 13:40:43,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4056 to 3212. [2022-02-15 13:40:43,893 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) [2022-02-15 13:40:43,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3212 states to 3212 states and 7931 transitions. [2022-02-15 13:40:43,897 INFO L78 Accepts]: Start accepts. Automaton has 3212 states and 7931 transitions. Word has length 48 [2022-02-15 13:40:43,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:43,897 INFO L470 AbstractCegarLoop]: Abstraction has 3212 states and 7931 transitions. [2022-02-15 13:40:43,897 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) [2022-02-15 13:40:43,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3212 states and 7931 transitions. [2022-02-15 13:40:43,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:43,900 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:43,900 INFO L514 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] [2022-02-15 13:40:43,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-15 13:40:43,901 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:43,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:43,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1887273988, now seen corresponding path program 35 times [2022-02-15 13:40:43,901 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:43,901 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437151872] [2022-02-15 13:40:43,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:43,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:43,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:43,991 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:43,992 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437151872] [2022-02-15 13:40:43,992 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437151872] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:43,992 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:43,992 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:43,992 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106035176] [2022-02-15 13:40:43,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:43,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:43,992 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:43,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:43,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:43,992 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) [2022-02-15 13:40:44,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:44,128 INFO L93 Difference]: Finished difference Result 3615 states and 8816 transitions. [2022-02-15 13:40:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 13:40:44,128 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 [2022-02-15 13:40:44,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:44,132 INFO L225 Difference]: With dead ends: 3615 [2022-02-15 13:40:44,132 INFO L226 Difference]: Without dead ends: 3320 [2022-02-15 13:40:44,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:40:44,133 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 191 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:44,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 707 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2022-02-15 13:40:44,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 3097. [2022-02-15 13:40:44,161 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) [2022-02-15 13:40:44,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 7592 transitions. [2022-02-15 13:40:44,165 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 7592 transitions. Word has length 48 [2022-02-15 13:40:44,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:44,165 INFO L470 AbstractCegarLoop]: Abstraction has 3097 states and 7592 transitions. [2022-02-15 13:40:44,165 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) [2022-02-15 13:40:44,165 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 7592 transitions. [2022-02-15 13:40:44,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:44,168 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:44,168 INFO L514 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] [2022-02-15 13:40:44,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-15 13:40:44,168 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:44,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:44,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2093953770, now seen corresponding path program 36 times [2022-02-15 13:40:44,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:44,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094228886] [2022-02-15 13:40:44,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:44,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:44,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:44,253 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:44,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094228886] [2022-02-15 13:40:44,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094228886] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:44,253 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:44,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 13:40:44,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248198554] [2022-02-15 13:40:44,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:44,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:40:44,253 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:44,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:40:44,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:44,254 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) [2022-02-15 13:40:44,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:44,478 INFO L93 Difference]: Finished difference Result 5084 states and 12138 transitions. [2022-02-15 13:40:44,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 13:40:44,478 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 [2022-02-15 13:40:44,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:44,484 INFO L225 Difference]: With dead ends: 5084 [2022-02-15 13:40:44,484 INFO L226 Difference]: Without dead ends: 4743 [2022-02-15 13:40:44,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2022-02-15 13:40:44,485 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 291 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:44,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 376 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:44,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4743 states. [2022-02-15 13:40:44,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4743 to 3467. [2022-02-15 13:40:44,516 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) [2022-02-15 13:40:44,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3467 states to 3467 states and 8408 transitions. [2022-02-15 13:40:44,520 INFO L78 Accepts]: Start accepts. Automaton has 3467 states and 8408 transitions. Word has length 48 [2022-02-15 13:40:44,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:44,520 INFO L470 AbstractCegarLoop]: Abstraction has 3467 states and 8408 transitions. [2022-02-15 13:40:44,520 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) [2022-02-15 13:40:44,520 INFO L276 IsEmpty]: Start isEmpty. Operand 3467 states and 8408 transitions. [2022-02-15 13:40:44,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:44,523 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:44,523 INFO L514 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] [2022-02-15 13:40:44,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-15 13:40:44,524 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:44,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:44,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1544148968, now seen corresponding path program 37 times [2022-02-15 13:40:44,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:44,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226310023] [2022-02-15 13:40:44,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:44,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:44,660 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:44,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226310023] [2022-02-15 13:40:44,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226310023] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:44,661 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:44,661 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 13:40:44,661 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825623350] [2022-02-15 13:40:44,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:44,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 13:40:44,661 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:44,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 13:40:44,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:40:44,661 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) [2022-02-15 13:40:44,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:44,759 INFO L93 Difference]: Finished difference Result 3716 states and 8981 transitions. [2022-02-15 13:40:44,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:40:44,760 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 [2022-02-15 13:40:44,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:44,764 INFO L225 Difference]: With dead ends: 3716 [2022-02-15 13:40:44,764 INFO L226 Difference]: Without dead ends: 3587 [2022-02-15 13:40:44,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:40:44,765 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 48 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:44,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 218 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:44,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3587 states. [2022-02-15 13:40:44,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3587 to 3455. [2022-02-15 13:40:44,807 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) [2022-02-15 13:40:44,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3455 states to 3455 states and 8377 transitions. [2022-02-15 13:40:44,813 INFO L78 Accepts]: Start accepts. Automaton has 3455 states and 8377 transitions. Word has length 48 [2022-02-15 13:40:44,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:44,813 INFO L470 AbstractCegarLoop]: Abstraction has 3455 states and 8377 transitions. [2022-02-15 13:40:44,813 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) [2022-02-15 13:40:44,813 INFO L276 IsEmpty]: Start isEmpty. Operand 3455 states and 8377 transitions. [2022-02-15 13:40:44,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:44,817 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:44,817 INFO L514 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] [2022-02-15 13:40:44,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-15 13:40:44,818 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:44,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:44,818 INFO L85 PathProgramCache]: Analyzing trace with hash -82170110, now seen corresponding path program 38 times [2022-02-15 13:40:44,818 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:44,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190204935] [2022-02-15 13:40:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:44,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:44,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:44,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190204935] [2022-02-15 13:40:44,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190204935] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:44,897 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:44,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 13:40:44,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218488356] [2022-02-15 13:40:44,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:44,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 13:40:44,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:44,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 13:40:44,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:44,898 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) [2022-02-15 13:40:44,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:44,992 INFO L93 Difference]: Finished difference Result 3991 states and 9597 transitions. [2022-02-15 13:40:44,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 13:40:44,992 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 [2022-02-15 13:40:44,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:44,997 INFO L225 Difference]: With dead ends: 3991 [2022-02-15 13:40:44,997 INFO L226 Difference]: Without dead ends: 3778 [2022-02-15 13:40:44,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:44,997 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 134 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:44,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 221 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:45,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2022-02-15 13:40:45,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3214. [2022-02-15 13:40:45,043 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) [2022-02-15 13:40:45,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 7760 transitions. [2022-02-15 13:40:45,049 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 7760 transitions. Word has length 48 [2022-02-15 13:40:45,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:45,049 INFO L470 AbstractCegarLoop]: Abstraction has 3214 states and 7760 transitions. [2022-02-15 13:40:45,049 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) [2022-02-15 13:40:45,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 7760 transitions. [2022-02-15 13:40:45,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:45,053 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:45,053 INFO L514 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] [2022-02-15 13:40:45,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-15 13:40:45,053 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:45,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:45,053 INFO L85 PathProgramCache]: Analyzing trace with hash -631974912, now seen corresponding path program 39 times [2022-02-15 13:40:45,053 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:45,053 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018258657] [2022-02-15 13:40:45,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:45,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:45,183 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:45,183 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018258657] [2022-02-15 13:40:45,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018258657] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:45,184 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:45,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:45,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674911491] [2022-02-15 13:40:45,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:45,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:45,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:45,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:45,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:45,184 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) [2022-02-15 13:40:45,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:45,329 INFO L93 Difference]: Finished difference Result 3343 states and 8038 transitions. [2022-02-15 13:40:45,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 13:40:45,330 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 [2022-02-15 13:40:45,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:45,333 INFO L225 Difference]: With dead ends: 3343 [2022-02-15 13:40:45,333 INFO L226 Difference]: Without dead ends: 3161 [2022-02-15 13:40:45,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:40:45,333 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 74 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:45,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 247 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:45,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2022-02-15 13:40:45,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 3159. [2022-02-15 13:40:45,361 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) [2022-02-15 13:40:45,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 7626 transitions. [2022-02-15 13:40:45,365 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 7626 transitions. Word has length 48 [2022-02-15 13:40:45,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:45,365 INFO L470 AbstractCegarLoop]: Abstraction has 3159 states and 7626 transitions. [2022-02-15 13:40:45,365 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) [2022-02-15 13:40:45,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 7626 transitions. [2022-02-15 13:40:45,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:45,369 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:45,369 INFO L514 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] [2022-02-15 13:40:45,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-15 13:40:45,369 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:45,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:45,369 INFO L85 PathProgramCache]: Analyzing trace with hash 115076142, now seen corresponding path program 40 times [2022-02-15 13:40:45,369 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:45,369 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486926786] [2022-02-15 13:40:45,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:45,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:45,449 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:45,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486926786] [2022-02-15 13:40:45,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486926786] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:45,449 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:45,449 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 13:40:45,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767031171] [2022-02-15 13:40:45,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:45,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 13:40:45,450 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:45,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 13:40:45,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:40:45,450 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) [2022-02-15 13:40:45,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:45,579 INFO L93 Difference]: Finished difference Result 3374 states and 7993 transitions. [2022-02-15 13:40:45,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 13:40:45,580 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 [2022-02-15 13:40:45,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:45,583 INFO L225 Difference]: With dead ends: 3374 [2022-02-15 13:40:45,583 INFO L226 Difference]: Without dead ends: 3066 [2022-02-15 13:40:45,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:45,584 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 95 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:45,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 313 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:45,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2022-02-15 13:40:45,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 2850. [2022-02-15 13:40:45,609 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) [2022-02-15 13:40:45,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 6861 transitions. [2022-02-15 13:40:45,613 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 6861 transitions. Word has length 48 [2022-02-15 13:40:45,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:45,613 INFO L470 AbstractCegarLoop]: Abstraction has 2850 states and 6861 transitions. [2022-02-15 13:40:45,613 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) [2022-02-15 13:40:45,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 6861 transitions. [2022-02-15 13:40:45,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:45,615 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:45,615 INFO L514 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] [2022-02-15 13:40:45,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-15 13:40:45,616 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:45,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:45,616 INFO L85 PathProgramCache]: Analyzing trace with hash -68059828, now seen corresponding path program 41 times [2022-02-15 13:40:45,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:45,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110369634] [2022-02-15 13:40:45,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:45,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:45,735 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:45,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110369634] [2022-02-15 13:40:45,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110369634] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:45,736 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:45,736 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 13:40:45,736 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321854465] [2022-02-15 13:40:45,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:45,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:40:45,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:45,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:40:45,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:45,736 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) [2022-02-15 13:40:46,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:46,283 INFO L93 Difference]: Finished difference Result 3813 states and 9024 transitions. [2022-02-15 13:40:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 13:40:46,283 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 [2022-02-15 13:40:46,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:46,287 INFO L225 Difference]: With dead ends: 3813 [2022-02-15 13:40:46,287 INFO L226 Difference]: Without dead ends: 3585 [2022-02-15 13:40:46,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-02-15 13:40:46,288 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 406 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:46,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 539 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 13:40:46,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2022-02-15 13:40:46,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 2967. [2022-02-15 13:40:46,314 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) [2022-02-15 13:40:46,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 7107 transitions. [2022-02-15 13:40:46,317 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 7107 transitions. Word has length 48 [2022-02-15 13:40:46,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:46,317 INFO L470 AbstractCegarLoop]: Abstraction has 2967 states and 7107 transitions. [2022-02-15 13:40:46,317 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) [2022-02-15 13:40:46,317 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 7107 transitions. [2022-02-15 13:40:46,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:46,320 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:46,320 INFO L514 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] [2022-02-15 13:40:46,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-15 13:40:46,320 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:46,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:46,320 INFO L85 PathProgramCache]: Analyzing trace with hash -530234322, now seen corresponding path program 42 times [2022-02-15 13:40:46,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:46,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540520171] [2022-02-15 13:40:46,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:46,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:46,471 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:46,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540520171] [2022-02-15 13:40:46,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540520171] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:46,471 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:46,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 13:40:46,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506844536] [2022-02-15 13:40:46,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:46,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 13:40:46,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:46,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 13:40:46,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:46,472 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) [2022-02-15 13:40:46,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:46,571 INFO L93 Difference]: Finished difference Result 3085 states and 7351 transitions. [2022-02-15 13:40:46,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 13:40:46,572 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 [2022-02-15 13:40:46,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:46,575 INFO L225 Difference]: With dead ends: 3085 [2022-02-15 13:40:46,575 INFO L226 Difference]: Without dead ends: 2959 [2022-02-15 13:40:46,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:46,576 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 43 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:46,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 259 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:46,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2022-02-15 13:40:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 2955. [2022-02-15 13:40:46,605 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) [2022-02-15 13:40:46,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 7082 transitions. [2022-02-15 13:40:46,609 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 7082 transitions. Word has length 48 [2022-02-15 13:40:46,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:46,610 INFO L470 AbstractCegarLoop]: Abstraction has 2955 states and 7082 transitions. [2022-02-15 13:40:46,610 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) [2022-02-15 13:40:46,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 7082 transitions. [2022-02-15 13:40:46,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:46,614 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:46,614 INFO L514 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] [2022-02-15 13:40:46,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-15 13:40:46,614 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:46,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:46,614 INFO L85 PathProgramCache]: Analyzing trace with hash -709714664, now seen corresponding path program 43 times [2022-02-15 13:40:46,614 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:46,614 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52504748] [2022-02-15 13:40:46,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:46,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:46,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:46,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52504748] [2022-02-15 13:40:46,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52504748] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:46,693 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:46,693 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:46,693 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347643907] [2022-02-15 13:40:46,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:46,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:46,694 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:46,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:46,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:46,694 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) [2022-02-15 13:40:46,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:46,844 INFO L93 Difference]: Finished difference Result 3143 states and 7454 transitions. [2022-02-15 13:40:46,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 13:40:46,844 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 [2022-02-15 13:40:46,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:46,847 INFO L225 Difference]: With dead ends: 3143 [2022-02-15 13:40:46,848 INFO L226 Difference]: Without dead ends: 2650 [2022-02-15 13:40:46,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:40:46,848 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 186 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:46,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 705 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:46,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2022-02-15 13:40:46,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 2491. [2022-02-15 13:40:46,868 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) [2022-02-15 13:40:46,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2491 states to 2491 states and 5904 transitions. [2022-02-15 13:40:46,871 INFO L78 Accepts]: Start accepts. Automaton has 2491 states and 5904 transitions. Word has length 48 [2022-02-15 13:40:46,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:46,871 INFO L470 AbstractCegarLoop]: Abstraction has 2491 states and 5904 transitions. [2022-02-15 13:40:46,871 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) [2022-02-15 13:40:46,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2491 states and 5904 transitions. [2022-02-15 13:40:46,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:46,874 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:46,874 INFO L514 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] [2022-02-15 13:40:46,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-15 13:40:46,874 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:46,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1009918126, now seen corresponding path program 44 times [2022-02-15 13:40:46,874 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:46,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97268222] [2022-02-15 13:40:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:46,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:46,963 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:46,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97268222] [2022-02-15 13:40:46,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97268222] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:46,963 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:46,963 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:46,963 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849095778] [2022-02-15 13:40:46,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:46,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:46,963 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:46,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:46,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:46,964 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) [2022-02-15 13:40:47,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:47,154 INFO L93 Difference]: Finished difference Result 3707 states and 8669 transitions. [2022-02-15 13:40:47,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 13:40:47,155 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 [2022-02-15 13:40:47,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:47,158 INFO L225 Difference]: With dead ends: 3707 [2022-02-15 13:40:47,158 INFO L226 Difference]: Without dead ends: 3221 [2022-02-15 13:40:47,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:40:47,159 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 193 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:47,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 305 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:47,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3221 states. [2022-02-15 13:40:47,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3221 to 2398. [2022-02-15 13:40:47,182 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) [2022-02-15 13:40:47,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 5595 transitions. [2022-02-15 13:40:47,185 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 5595 transitions. Word has length 48 [2022-02-15 13:40:47,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:47,185 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 5595 transitions. [2022-02-15 13:40:47,185 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) [2022-02-15 13:40:47,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 5595 transitions. [2022-02-15 13:40:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:47,187 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:47,187 INFO L514 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] [2022-02-15 13:40:47,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-15 13:40:47,188 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:47,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:47,188 INFO L85 PathProgramCache]: Analyzing trace with hash 689438834, now seen corresponding path program 45 times [2022-02-15 13:40:47,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:47,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105773965] [2022-02-15 13:40:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:47,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:47,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:47,324 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:47,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105773965] [2022-02-15 13:40:47,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105773965] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:47,324 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:47,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 13:40:47,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178891095] [2022-02-15 13:40:47,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:47,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 13:40:47,325 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:47,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 13:40:47,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:40:47,325 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) [2022-02-15 13:40:47,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:47,440 INFO L93 Difference]: Finished difference Result 2961 states and 6858 transitions. [2022-02-15 13:40:47,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 13:40:47,441 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 [2022-02-15 13:40:47,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:47,444 INFO L225 Difference]: With dead ends: 2961 [2022-02-15 13:40:47,444 INFO L226 Difference]: Without dead ends: 2762 [2022-02-15 13:40:47,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:47,445 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 71 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:47,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 273 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:47,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2022-02-15 13:40:47,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 2386. [2022-02-15 13:40:47,468 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) [2022-02-15 13:40:47,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 5559 transitions. [2022-02-15 13:40:47,471 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 5559 transitions. Word has length 48 [2022-02-15 13:40:47,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:47,471 INFO L470 AbstractCegarLoop]: Abstraction has 2386 states and 5559 transitions. [2022-02-15 13:40:47,471 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) [2022-02-15 13:40:47,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 5559 transitions. [2022-02-15 13:40:47,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:47,473 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:47,473 INFO L514 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] [2022-02-15 13:40:47,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-15 13:40:47,474 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:47,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:47,474 INFO L85 PathProgramCache]: Analyzing trace with hash 227264340, now seen corresponding path program 46 times [2022-02-15 13:40:47,474 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:47,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466754319] [2022-02-15 13:40:47,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:47,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:47,595 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:47,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466754319] [2022-02-15 13:40:47,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466754319] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:47,595 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:47,595 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 13:40:47,595 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195274851] [2022-02-15 13:40:47,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:47,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 13:40:47,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:47,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 13:40:47,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:40:47,596 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) [2022-02-15 13:40:47,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:47,691 INFO L93 Difference]: Finished difference Result 2818 states and 6538 transitions. [2022-02-15 13:40:47,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 13:40:47,691 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 [2022-02-15 13:40:47,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:47,694 INFO L225 Difference]: With dead ends: 2818 [2022-02-15 13:40:47,694 INFO L226 Difference]: Without dead ends: 2572 [2022-02-15 13:40:47,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:47,695 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 78 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:47,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 225 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:47,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2022-02-15 13:40:47,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 2373. [2022-02-15 13:40:47,714 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) [2022-02-15 13:40:47,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 5518 transitions. [2022-02-15 13:40:47,716 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 5518 transitions. Word has length 48 [2022-02-15 13:40:47,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:47,717 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 5518 transitions. [2022-02-15 13:40:47,717 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) [2022-02-15 13:40:47,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 5518 transitions. [2022-02-15 13:40:47,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:47,719 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:47,719 INFO L514 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] [2022-02-15 13:40:47,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-15 13:40:47,719 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:47,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:47,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1602419814, now seen corresponding path program 47 times [2022-02-15 13:40:47,719 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:47,719 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041094758] [2022-02-15 13:40:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:47,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:47,817 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:47,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041094758] [2022-02-15 13:40:47,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041094758] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:47,817 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:47,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:47,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843023199] [2022-02-15 13:40:47,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:47,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:47,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:47,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:47,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:47,818 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) [2022-02-15 13:40:47,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:47,949 INFO L93 Difference]: Finished difference Result 3589 states and 8166 transitions. [2022-02-15 13:40:47,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 13:40:47,950 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 [2022-02-15 13:40:47,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:47,954 INFO L225 Difference]: With dead ends: 3589 [2022-02-15 13:40:47,954 INFO L226 Difference]: Without dead ends: 3358 [2022-02-15 13:40:47,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:47,955 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 144 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:47,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 331 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:47,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2022-02-15 13:40:47,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 2213. [2022-02-15 13:40:47,980 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) [2022-02-15 13:40:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 5132 transitions. [2022-02-15 13:40:47,982 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 5132 transitions. Word has length 48 [2022-02-15 13:40:47,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:47,982 INFO L470 AbstractCegarLoop]: Abstraction has 2213 states and 5132 transitions. [2022-02-15 13:40:47,982 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) [2022-02-15 13:40:47,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 5132 transitions. [2022-02-15 13:40:47,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:47,984 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:47,985 INFO L514 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] [2022-02-15 13:40:47,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-15 13:40:47,985 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:47,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:47,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1315155866, now seen corresponding path program 48 times [2022-02-15 13:40:47,986 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:47,986 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46438846] [2022-02-15 13:40:47,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:47,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:48,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:48,061 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:48,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46438846] [2022-02-15 13:40:48,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46438846] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:48,062 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:48,062 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 13:40:48,062 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967061956] [2022-02-15 13:40:48,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:48,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 13:40:48,062 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:48,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 13:40:48,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:48,062 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) [2022-02-15 13:40:48,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:48,223 INFO L93 Difference]: Finished difference Result 3746 states and 8538 transitions. [2022-02-15 13:40:48,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 13:40:48,223 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 [2022-02-15 13:40:48,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:48,227 INFO L225 Difference]: With dead ends: 3746 [2022-02-15 13:40:48,227 INFO L226 Difference]: Without dead ends: 3472 [2022-02-15 13:40:48,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-02-15 13:40:48,228 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 157 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:48,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 353 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:48,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2022-02-15 13:40:48,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 2204. [2022-02-15 13:40:48,251 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) [2022-02-15 13:40:48,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 5090 transitions. [2022-02-15 13:40:48,254 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 5090 transitions. Word has length 48 [2022-02-15 13:40:48,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:48,254 INFO L470 AbstractCegarLoop]: Abstraction has 2204 states and 5090 transitions. [2022-02-15 13:40:48,254 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) [2022-02-15 13:40:48,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 5090 transitions. [2022-02-15 13:40:48,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:48,256 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:48,256 INFO L514 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] [2022-02-15 13:40:48,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-15 13:40:48,256 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:48,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:48,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1744664144, now seen corresponding path program 49 times [2022-02-15 13:40:48,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:48,257 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766055123] [2022-02-15 13:40:48,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:48,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:48,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:48,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766055123] [2022-02-15 13:40:48,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766055123] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:48,339 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:48,339 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 13:40:48,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795886041] [2022-02-15 13:40:48,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:48,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 13:40:48,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:48,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 13:40:48,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:48,339 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) [2022-02-15 13:40:48,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:48,551 INFO L93 Difference]: Finished difference Result 3110 states and 7090 transitions. [2022-02-15 13:40:48,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 13:40:48,552 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 [2022-02-15 13:40:48,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:48,555 INFO L225 Difference]: With dead ends: 3110 [2022-02-15 13:40:48,555 INFO L226 Difference]: Without dead ends: 2537 [2022-02-15 13:40:48,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-02-15 13:40:48,555 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 156 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:48,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 401 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:48,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2022-02-15 13:40:48,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2237. [2022-02-15 13:40:48,577 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) [2022-02-15 13:40:48,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 5141 transitions. [2022-02-15 13:40:48,580 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 5141 transitions. Word has length 48 [2022-02-15 13:40:48,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:48,580 INFO L470 AbstractCegarLoop]: Abstraction has 2237 states and 5141 transitions. [2022-02-15 13:40:48,580 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) [2022-02-15 13:40:48,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 5141 transitions. [2022-02-15 13:40:48,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:48,601 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:48,601 INFO L514 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] [2022-02-15 13:40:48,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-15 13:40:48,603 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:48,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:48,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1370728880, now seen corresponding path program 50 times [2022-02-15 13:40:48,603 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:48,603 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222072098] [2022-02-15 13:40:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:48,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:48,690 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:48,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222072098] [2022-02-15 13:40:48,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222072098] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:48,690 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:48,690 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:40:48,690 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610980530] [2022-02-15 13:40:48,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:48,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:40:48,691 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:48,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:40:48,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:40:48,691 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) [2022-02-15 13:40:48,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:48,812 INFO L93 Difference]: Finished difference Result 2595 states and 5922 transitions. [2022-02-15 13:40:48,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 13:40:48,813 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 [2022-02-15 13:40:48,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:48,815 INFO L225 Difference]: With dead ends: 2595 [2022-02-15 13:40:48,815 INFO L226 Difference]: Without dead ends: 2390 [2022-02-15 13:40:48,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:48,816 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 65 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:48,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 260 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:48,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2022-02-15 13:40:48,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 2236. [2022-02-15 13:40:48,834 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) [2022-02-15 13:40:48,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 5134 transitions. [2022-02-15 13:40:48,837 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 5134 transitions. Word has length 48 [2022-02-15 13:40:48,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:48,837 INFO L470 AbstractCegarLoop]: Abstraction has 2236 states and 5134 transitions. [2022-02-15 13:40:48,837 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) [2022-02-15 13:40:48,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 5134 transitions. [2022-02-15 13:40:48,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:48,839 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:48,839 INFO L514 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] [2022-02-15 13:40:48,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-15 13:40:48,839 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:48,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:48,839 INFO L85 PathProgramCache]: Analyzing trace with hash -221290520, now seen corresponding path program 51 times [2022-02-15 13:40:48,839 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:48,839 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371820079] [2022-02-15 13:40:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:48,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:48,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:48,915 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:48,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371820079] [2022-02-15 13:40:48,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371820079] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:48,915 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:48,915 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 13:40:48,915 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004714841] [2022-02-15 13:40:48,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:48,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 13:40:48,915 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:48,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 13:40:48,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:48,915 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) [2022-02-15 13:40:49,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:49,079 INFO L93 Difference]: Finished difference Result 2699 states and 6128 transitions. [2022-02-15 13:40:49,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 13:40:49,080 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 [2022-02-15 13:40:49,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:49,082 INFO L225 Difference]: With dead ends: 2699 [2022-02-15 13:40:49,082 INFO L226 Difference]: Without dead ends: 2496 [2022-02-15 13:40:49,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-02-15 13:40:49,083 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 176 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:49,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 304 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:49,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2022-02-15 13:40:49,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2190. [2022-02-15 13:40:49,115 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) [2022-02-15 13:40:49,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2190 states to 2190 states and 5014 transitions. [2022-02-15 13:40:49,118 INFO L78 Accepts]: Start accepts. Automaton has 2190 states and 5014 transitions. Word has length 48 [2022-02-15 13:40:49,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:49,118 INFO L470 AbstractCegarLoop]: Abstraction has 2190 states and 5014 transitions. [2022-02-15 13:40:49,118 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) [2022-02-15 13:40:49,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2190 states and 5014 transitions. [2022-02-15 13:40:49,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:49,120 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:49,120 INFO L514 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] [2022-02-15 13:40:49,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-15 13:40:49,124 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:49,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:49,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1670100910, now seen corresponding path program 52 times [2022-02-15 13:40:49,125 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:49,125 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42727958] [2022-02-15 13:40:49,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:49,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:49,223 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:49,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42727958] [2022-02-15 13:40:49,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42727958] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:49,223 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:49,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:49,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70016032] [2022-02-15 13:40:49,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:49,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:49,224 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:49,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:49,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:49,225 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) [2022-02-15 13:40:49,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:49,350 INFO L93 Difference]: Finished difference Result 2497 states and 5616 transitions. [2022-02-15 13:40:49,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 13:40:49,350 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 [2022-02-15 13:40:49,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:49,354 INFO L225 Difference]: With dead ends: 2497 [2022-02-15 13:40:49,354 INFO L226 Difference]: Without dead ends: 2099 [2022-02-15 13:40:49,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-02-15 13:40:49,355 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 92 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:49,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 379 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:49,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2022-02-15 13:40:49,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 2030. [2022-02-15 13:40:49,371 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) [2022-02-15 13:40:49,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 4610 transitions. [2022-02-15 13:40:49,373 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 4610 transitions. Word has length 48 [2022-02-15 13:40:49,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:49,373 INFO L470 AbstractCegarLoop]: Abstraction has 2030 states and 4610 transitions. [2022-02-15 13:40:49,373 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) [2022-02-15 13:40:49,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 4610 transitions. [2022-02-15 13:40:49,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:49,375 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:49,375 INFO L514 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] [2022-02-15 13:40:49,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-15 13:40:49,375 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:49,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:49,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1885258160, now seen corresponding path program 53 times [2022-02-15 13:40:49,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:49,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750346156] [2022-02-15 13:40:49,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:49,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:49,477 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:49,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750346156] [2022-02-15 13:40:49,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750346156] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:49,477 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:49,477 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:49,478 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888464031] [2022-02-15 13:40:49,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:49,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:49,478 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:49,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:49,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:49,478 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) [2022-02-15 13:40:49,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:49,693 INFO L93 Difference]: Finished difference Result 2359 states and 5297 transitions. [2022-02-15 13:40:49,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 13:40:49,694 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 [2022-02-15 13:40:49,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:49,696 INFO L225 Difference]: With dead ends: 2359 [2022-02-15 13:40:49,696 INFO L226 Difference]: Without dead ends: 2069 [2022-02-15 13:40:49,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-02-15 13:40:49,697 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 107 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:49,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 453 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:40:49,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2022-02-15 13:40:49,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1852. [2022-02-15 13:40:49,713 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) [2022-02-15 13:40:49,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 4210 transitions. [2022-02-15 13:40:49,715 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 4210 transitions. Word has length 48 [2022-02-15 13:40:49,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:49,715 INFO L470 AbstractCegarLoop]: Abstraction has 1852 states and 4210 transitions. [2022-02-15 13:40:49,715 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) [2022-02-15 13:40:49,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 4210 transitions. [2022-02-15 13:40:49,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:49,717 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:49,717 INFO L514 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] [2022-02-15 13:40:49,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-15 13:40:49,717 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:49,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:49,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1584892846, now seen corresponding path program 54 times [2022-02-15 13:40:49,717 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:49,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345670912] [2022-02-15 13:40:49,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:49,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:49,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:49,810 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:49,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345670912] [2022-02-15 13:40:49,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345670912] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:49,811 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:49,811 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:49,811 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671369043] [2022-02-15 13:40:49,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:49,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:49,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:49,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:49,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:49,811 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) [2022-02-15 13:40:49,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:49,964 INFO L93 Difference]: Finished difference Result 1973 states and 4426 transitions. [2022-02-15 13:40:49,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 13:40:49,964 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 [2022-02-15 13:40:49,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:49,966 INFO L225 Difference]: With dead ends: 1973 [2022-02-15 13:40:49,966 INFO L226 Difference]: Without dead ends: 1816 [2022-02-15 13:40:49,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-02-15 13:40:49,966 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 90 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:49,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 332 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:49,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2022-02-15 13:40:49,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1639. [2022-02-15 13:40:49,981 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) [2022-02-15 13:40:49,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 3723 transitions. [2022-02-15 13:40:49,983 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 3723 transitions. Word has length 48 [2022-02-15 13:40:49,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:49,983 INFO L470 AbstractCegarLoop]: Abstraction has 1639 states and 3723 transitions. [2022-02-15 13:40:49,983 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) [2022-02-15 13:40:49,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 3723 transitions. [2022-02-15 13:40:49,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:49,984 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:49,985 INFO L514 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] [2022-02-15 13:40:49,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-15 13:40:49,985 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:49,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:49,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2132644280, now seen corresponding path program 55 times [2022-02-15 13:40:49,985 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:49,985 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761013041] [2022-02-15 13:40:49,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:49,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:50,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:50,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761013041] [2022-02-15 13:40:50,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761013041] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:50,080 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:50,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:50,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214649533] [2022-02-15 13:40:50,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:50,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:50,080 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:50,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:50,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:50,081 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) [2022-02-15 13:40:50,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:50,367 INFO L93 Difference]: Finished difference Result 2243 states and 5036 transitions. [2022-02-15 13:40:50,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 13:40:50,368 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 [2022-02-15 13:40:50,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:50,370 INFO L225 Difference]: With dead ends: 2243 [2022-02-15 13:40:50,370 INFO L226 Difference]: Without dead ends: 2174 [2022-02-15 13:40:50,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:40:50,370 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 209 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:50,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 516 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 13:40:50,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2022-02-15 13:40:50,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 1621. [2022-02-15 13:40:50,385 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) [2022-02-15 13:40:50,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 3678 transitions. [2022-02-15 13:40:50,387 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 3678 transitions. Word has length 48 [2022-02-15 13:40:50,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:50,387 INFO L470 AbstractCegarLoop]: Abstraction has 1621 states and 3678 transitions. [2022-02-15 13:40:50,387 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) [2022-02-15 13:40:50,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 3678 transitions. [2022-02-15 13:40:50,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:50,389 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:50,389 INFO L514 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] [2022-02-15 13:40:50,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-15 13:40:50,389 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:50,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:50,389 INFO L85 PathProgramCache]: Analyzing trace with hash 252424138, now seen corresponding path program 56 times [2022-02-15 13:40:50,389 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:50,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427319459] [2022-02-15 13:40:50,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:50,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:50,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:50,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427319459] [2022-02-15 13:40:50,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427319459] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:50,447 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:50,447 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:50,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107026393] [2022-02-15 13:40:50,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:50,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:50,448 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:50,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:50,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:50,448 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) [2022-02-15 13:40:50,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:50,606 INFO L93 Difference]: Finished difference Result 1769 states and 3934 transitions. [2022-02-15 13:40:50,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 13:40:50,607 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 [2022-02-15 13:40:50,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:50,608 INFO L225 Difference]: With dead ends: 1769 [2022-02-15 13:40:50,608 INFO L226 Difference]: Without dead ends: 1350 [2022-02-15 13:40:50,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-02-15 13:40:50,608 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 231 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:50,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 280 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:50,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2022-02-15 13:40:50,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1052. [2022-02-15 13:40:50,617 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) [2022-02-15 13:40:50,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 2368 transitions. [2022-02-15 13:40:50,618 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 2368 transitions. Word has length 48 [2022-02-15 13:40:50,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:50,618 INFO L470 AbstractCegarLoop]: Abstraction has 1052 states and 2368 transitions. [2022-02-15 13:40:50,618 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) [2022-02-15 13:40:50,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 2368 transitions. [2022-02-15 13:40:50,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:50,620 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:50,620 INFO L514 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] [2022-02-15 13:40:50,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-15 13:40:50,620 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:50,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:50,620 INFO L85 PathProgramCache]: Analyzing trace with hash -881456816, now seen corresponding path program 57 times [2022-02-15 13:40:50,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:50,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645193725] [2022-02-15 13:40:50,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:50,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:50,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:50,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645193725] [2022-02-15 13:40:50,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645193725] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:50,693 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:50,693 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 13:40:50,694 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706818023] [2022-02-15 13:40:50,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:50,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 13:40:50,694 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:50,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 13:40:50,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:40:50,694 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) [2022-02-15 13:40:50,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:50,801 INFO L93 Difference]: Finished difference Result 887 states and 1929 transitions. [2022-02-15 13:40:50,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 13:40:50,801 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 [2022-02-15 13:40:50,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:50,802 INFO L225 Difference]: With dead ends: 887 [2022-02-15 13:40:50,802 INFO L226 Difference]: Without dead ends: 758 [2022-02-15 13:40:50,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:50,803 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 38 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:50,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 218 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:50,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-02-15 13:40:50,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 758. [2022-02-15 13:40:50,808 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) [2022-02-15 13:40:50,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1629 transitions. [2022-02-15 13:40:50,809 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1629 transitions. Word has length 48 [2022-02-15 13:40:50,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:50,809 INFO L470 AbstractCegarLoop]: Abstraction has 758 states and 1629 transitions. [2022-02-15 13:40:50,809 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) [2022-02-15 13:40:50,809 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1629 transitions. [2022-02-15 13:40:50,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:50,810 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:50,810 INFO L514 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] [2022-02-15 13:40:50,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-15 13:40:50,810 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:50,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:50,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1915961824, now seen corresponding path program 58 times [2022-02-15 13:40:50,810 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:50,810 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830158798] [2022-02-15 13:40:50,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:50,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:50,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:50,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:50,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830158798] [2022-02-15 13:40:50,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830158798] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:50,939 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:50,939 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 13:40:50,939 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402985046] [2022-02-15 13:40:50,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:50,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 13:40:50,939 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:50,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 13:40:50,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-02-15 13:40:50,940 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) [2022-02-15 13:40:51,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:51,116 INFO L93 Difference]: Finished difference Result 892 states and 1906 transitions. [2022-02-15 13:40:51,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 13:40:51,116 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 [2022-02-15 13:40:51,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:51,117 INFO L225 Difference]: With dead ends: 892 [2022-02-15 13:40:51,117 INFO L226 Difference]: Without dead ends: 854 [2022-02-15 13:40:51,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:40:51,117 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 116 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:51,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 376 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:51,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-02-15 13:40:51,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 762. [2022-02-15 13:40:51,137 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) [2022-02-15 13:40:51,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1639 transitions. [2022-02-15 13:40:51,138 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1639 transitions. Word has length 48 [2022-02-15 13:40:51,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:51,138 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1639 transitions. [2022-02-15 13:40:51,138 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) [2022-02-15 13:40:51,138 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1639 transitions. [2022-02-15 13:40:51,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:51,139 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:51,139 INFO L514 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] [2022-02-15 13:40:51,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-15 13:40:51,139 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:51,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:51,139 INFO L85 PathProgramCache]: Analyzing trace with hash -132217086, now seen corresponding path program 59 times [2022-02-15 13:40:51,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:51,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340604645] [2022-02-15 13:40:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:51,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:51,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:51,264 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:51,264 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340604645] [2022-02-15 13:40:51,264 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340604645] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:51,264 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:51,264 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 13:40:51,264 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709098386] [2022-02-15 13:40:51,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:51,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 13:40:51,264 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:51,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 13:40:51,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-02-15 13:40:51,265 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) [2022-02-15 13:40:51,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:51,441 INFO L93 Difference]: Finished difference Result 824 states and 1764 transitions. [2022-02-15 13:40:51,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 13:40:51,442 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 [2022-02-15 13:40:51,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:51,442 INFO L225 Difference]: With dead ends: 824 [2022-02-15 13:40:51,442 INFO L226 Difference]: Without dead ends: 726 [2022-02-15 13:40:51,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-02-15 13:40:51,443 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 49 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:51,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 401 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:51,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-02-15 13:40:51,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 718. [2022-02-15 13:40:51,448 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) [2022-02-15 13:40:51,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1531 transitions. [2022-02-15 13:40:51,449 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1531 transitions. Word has length 48 [2022-02-15 13:40:51,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:51,449 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 1531 transitions. [2022-02-15 13:40:51,449 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) [2022-02-15 13:40:51,449 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1531 transitions. [2022-02-15 13:40:51,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:51,449 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:51,450 INFO L514 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] [2022-02-15 13:40:51,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-15 13:40:51,450 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:51,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:51,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2031263338, now seen corresponding path program 60 times [2022-02-15 13:40:51,450 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:51,450 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875592648] [2022-02-15 13:40:51,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:51,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:51,545 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:51,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875592648] [2022-02-15 13:40:51,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875592648] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:51,545 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:51,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 13:40:51,545 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282904324] [2022-02-15 13:40:51,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:51,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:40:51,545 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:51,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:40:51,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:51,545 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) [2022-02-15 13:40:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:51,663 INFO L93 Difference]: Finished difference Result 842 states and 1792 transitions. [2022-02-15 13:40:51,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-15 13:40:51,663 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 [2022-02-15 13:40:51,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:51,664 INFO L225 Difference]: With dead ends: 842 [2022-02-15 13:40:51,664 INFO L226 Difference]: Without dead ends: 792 [2022-02-15 13:40:51,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-15 13:40:51,665 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 59 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:51,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 326 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:51,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2022-02-15 13:40:51,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 710. [2022-02-15 13:40:51,670 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) [2022-02-15 13:40:51,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1514 transitions. [2022-02-15 13:40:51,670 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1514 transitions. Word has length 48 [2022-02-15 13:40:51,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:51,671 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 1514 transitions. [2022-02-15 13:40:51,671 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) [2022-02-15 13:40:51,671 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1514 transitions. [2022-02-15 13:40:51,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:51,671 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:51,671 INFO L514 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] [2022-02-15 13:40:51,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-15 13:40:51,672 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:51,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:51,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1199569654, now seen corresponding path program 61 times [2022-02-15 13:40:51,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:51,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138202850] [2022-02-15 13:40:51,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:51,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:51,775 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:51,775 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138202850] [2022-02-15 13:40:51,775 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138202850] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:51,775 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:51,775 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 13:40:51,776 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957949628] [2022-02-15 13:40:51,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:51,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:40:51,776 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:51,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:40:51,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:51,776 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) [2022-02-15 13:40:51,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:51,898 INFO L93 Difference]: Finished difference Result 744 states and 1579 transitions. [2022-02-15 13:40:51,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 13:40:51,898 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 [2022-02-15 13:40:51,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:51,899 INFO L225 Difference]: With dead ends: 744 [2022-02-15 13:40:51,899 INFO L226 Difference]: Without dead ends: 714 [2022-02-15 13:40:51,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-15 13:40:51,899 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 69 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:51,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 323 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:51,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-02-15 13:40:51,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 706. [2022-02-15 13:40:51,904 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) [2022-02-15 13:40:51,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1504 transitions. [2022-02-15 13:40:51,905 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1504 transitions. Word has length 48 [2022-02-15 13:40:51,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:51,905 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 1504 transitions. [2022-02-15 13:40:51,905 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) [2022-02-15 13:40:51,905 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1504 transitions. [2022-02-15 13:40:51,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:51,906 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:51,906 INFO L514 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] [2022-02-15 13:40:51,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-15 13:40:51,906 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:51,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:51,907 INFO L85 PathProgramCache]: Analyzing trace with hash 661081684, now seen corresponding path program 62 times [2022-02-15 13:40:51,907 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:51,907 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87870463] [2022-02-15 13:40:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:51,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:52,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:52,016 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:52,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87870463] [2022-02-15 13:40:52,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87870463] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:52,016 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:52,016 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 13:40:52,016 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186596305] [2022-02-15 13:40:52,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:52,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 13:40:52,016 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:52,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 13:40:52,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-15 13:40:52,017 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) [2022-02-15 13:40:52,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:52,161 INFO L93 Difference]: Finished difference Result 676 states and 1437 transitions. [2022-02-15 13:40:52,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 13:40:52,162 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 [2022-02-15 13:40:52,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:52,162 INFO L225 Difference]: With dead ends: 676 [2022-02-15 13:40:52,162 INFO L226 Difference]: Without dead ends: 610 [2022-02-15 13:40:52,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-02-15 13:40:52,163 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 35 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:52,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 304 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:52,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-02-15 13:40:52,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2022-02-15 13:40:52,168 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) [2022-02-15 13:40:52,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 1302 transitions. [2022-02-15 13:40:52,168 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 1302 transitions. Word has length 48 [2022-02-15 13:40:52,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:52,169 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 1302 transitions. [2022-02-15 13:40:52,169 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) [2022-02-15 13:40:52,169 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 1302 transitions. [2022-02-15 13:40:52,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:52,169 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:52,169 INFO L514 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] [2022-02-15 13:40:52,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-15 13:40:52,170 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:52,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:52,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1979077640, now seen corresponding path program 63 times [2022-02-15 13:40:52,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:52,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883071507] [2022-02-15 13:40:52,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:52,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:52,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:52,265 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:52,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883071507] [2022-02-15 13:40:52,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883071507] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:52,266 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:52,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 13:40:52,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775873262] [2022-02-15 13:40:52,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:52,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 13:40:52,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:52,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 13:40:52,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-15 13:40:52,266 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) [2022-02-15 13:40:52,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:52,354 INFO L93 Difference]: Finished difference Result 487 states and 1022 transitions. [2022-02-15 13:40:52,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-15 13:40:52,354 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 [2022-02-15 13:40:52,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:52,355 INFO L225 Difference]: With dead ends: 487 [2022-02-15 13:40:52,355 INFO L226 Difference]: Without dead ends: 363 [2022-02-15 13:40:52,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-15 13:40:52,355 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 48 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:52,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 152 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:52,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-02-15 13:40:52,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2022-02-15 13:40:52,358 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) [2022-02-15 13:40:52,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 770 transitions. [2022-02-15 13:40:52,358 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 770 transitions. Word has length 48 [2022-02-15 13:40:52,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:52,358 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 770 transitions. [2022-02-15 13:40:52,358 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) [2022-02-15 13:40:52,359 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 770 transitions. [2022-02-15 13:40:52,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-15 13:40:52,359 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:40:52,359 INFO L514 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] [2022-02-15 13:40:52,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-15 13:40:52,359 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 13:40:52,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:40:52,359 INFO L85 PathProgramCache]: Analyzing trace with hash -37994470, now seen corresponding path program 64 times [2022-02-15 13:40:52,360 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:40:52,360 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015585677] [2022-02-15 13:40:52,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:40:52,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:40:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:40:52,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:40:52,430 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:40:52,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015585677] [2022-02-15 13:40:52,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015585677] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:40:52,430 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:40:52,430 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 13:40:52,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993321144] [2022-02-15 13:40:52,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:40:52,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 13:40:52,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:40:52,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 13:40:52,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-15 13:40:52,431 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) [2022-02-15 13:40:52,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:40:52,527 INFO L93 Difference]: Finished difference Result 343 states and 732 transitions. [2022-02-15 13:40:52,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 13:40:52,527 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 [2022-02-15 13:40:52,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:40:52,527 INFO L225 Difference]: With dead ends: 343 [2022-02-15 13:40:52,527 INFO L226 Difference]: Without dead ends: 0 [2022-02-15 13:40:52,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-02-15 13:40:52,527 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 73 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:40:52,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 238 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:40:52,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-15 13:40:52,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-15 13:40:52,528 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) [2022-02-15 13:40:52,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-15 13:40:52,528 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2022-02-15 13:40:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:40:52,528 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-15 13:40:52,528 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) [2022-02-15 13:40:52,528 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-15 13:40:52,528 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-15 13:40:52,530 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-02-15 13:40:52,530 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-02-15 13:40:52,530 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-02-15 13:40:52,530 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-02-15 13:40:52,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-15 13:40:52,532 INFO L732 BasicCegarLoop]: Path program histogram: [64] [2022-02-15 13:40:52,534 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-15 13:40:52,534 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 13:40:52,537 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 01:40:52 BasicIcfg [2022-02-15 13:40:52,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 13:40:52,538 INFO L158 Benchmark]: Toolchain (without parser) took 23889.53ms. Allocated memory was 184.5MB in the beginning and 744.5MB in the end (delta: 559.9MB). Free memory was 149.6MB in the beginning and 490.3MB in the end (delta: -340.7MB). Peak memory consumption was 220.2MB. Max. memory is 8.0GB. [2022-02-15 13:40:52,538 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 150.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 13:40:52,538 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.44ms. Allocated memory is still 184.5MB. Free memory was 149.5MB in the beginning and 147.9MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-02-15 13:40:52,538 INFO L158 Benchmark]: Boogie Preprocessor took 23.52ms. Allocated memory is still 184.5MB. Free memory was 147.9MB in the beginning and 147.0MB in the end (delta: 945.8kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 13:40:52,538 INFO L158 Benchmark]: RCFGBuilder took 206.68ms. Allocated memory is still 184.5MB. Free memory was 146.9MB in the beginning and 136.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-15 13:40:52,539 INFO L158 Benchmark]: TraceAbstraction took 23629.99ms. Allocated memory was 184.5MB in the beginning and 744.5MB in the end (delta: 559.9MB). Free memory was 136.0MB in the beginning and 490.3MB in the end (delta: -354.3MB). Peak memory consumption was 205.5MB. Max. memory is 8.0GB. [2022-02-15 13:40:52,541 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 0.10ms. Allocated memory is still 184.5MB. Free memory is still 150.8MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.44ms. Allocated memory is still 184.5MB. Free memory was 149.5MB in the beginning and 147.9MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.52ms. Allocated memory is still 184.5MB. Free memory was 147.9MB in the beginning and 147.0MB in the end (delta: 945.8kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 206.68ms. Allocated memory is still 184.5MB. Free memory was 146.9MB in the beginning and 136.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 23629.99ms. Allocated memory was 184.5MB in the beginning and 744.5MB in the end (delta: 559.9MB). Free memory was 136.0MB in the beginning and 490.3MB in the end (delta: -354.3MB). Peak memory consumption was 205.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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 with 1 thread instances CFG has 7 procedures, 99 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 23.6s, OverallIterations: 64, TraceHistogramMax: 1, PathProgramHistogramMax: 64, EmptinessCheckTime: 0.3s, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10331 SdHoareTripleChecker+Valid, 9.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10331 mSDsluCounter, 27541 SdHoareTripleChecker+Invalid, 7.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24971 mSDsCounter, 2461 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20003 IncrementalHoareTripleChecker+Invalid, 22464 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2461 mSolverCounterUnsat, 5609 mSDtfsCounter, 20003 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 846 GetRequests, 121 SyntacticMatches, 35 SemanticMatches, 690 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1328 ImplicationChecksByTransitivity, 5.1s Time, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 64 MinimizatonAttempts, 55894 StatesRemovedByMinimization, 58 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 3072 NumberOfCodeBlocks, 3072 NumberOfCodeBlocksAsserted, 64 NumberOfCheckSat, 3008 ConstructedInterpolants, 0 QuantifiedInterpolants, 19424 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! [2022-02-15 13:40:52,568 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...