/usr/bin/java -Xmx16000000000 -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/popl20/send-receive.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 06:09:12,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 06:09:12,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 06:09:12,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 06:09:12,245 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 [2022-01-18 06:09:12,273 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 06:09:12,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 06:09:12,274 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 06:09:12,274 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 06:09:12,275 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 06:09:12,275 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 06:09:12,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 06:09:12,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 06:09:12,276 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 06:09:12,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 06:09:12,277 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 06:09:12,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 06:09:12,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 06:09:12,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 06:09:12,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 06:09:12,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 06:09:12,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 06:09:12,278 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 06:09:12,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 06:09:12,278 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 06:09:12,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 06:09:12,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 06:09:12,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 06:09:12,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 06:09:12,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 06:09:12,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 06:09:12,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 06:09:12,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 06:09:12,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 06:09:12,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 06:09:12,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 06:09:12,281 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 06:09:12,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 06:09:12,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 06:09:12,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 06:09:12,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 06:09:12,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 06:09:12,534 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 06:09:12,535 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 06:09:12,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/send-receive.wvr.bpl [2022-01-18 06:09:12,536 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/send-receive.wvr.bpl' [2022-01-18 06:09:12,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 06:09:12,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 06:09:12,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 06:09:12,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 06:09:12,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 06:09:12,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:09:12" (1/1) ... [2022-01-18 06:09:12,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:09:12" (1/1) ... [2022-01-18 06:09:12,582 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 06:09:12,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 06:09:12,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 06:09:12,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 06:09:12,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 06:09:12,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:09:12" (1/1) ... [2022-01-18 06:09:12,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:09:12" (1/1) ... [2022-01-18 06:09:12,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:09:12" (1/1) ... [2022-01-18 06:09:12,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:09:12" (1/1) ... [2022-01-18 06:09:12,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:09:12" (1/1) ... [2022-01-18 06:09:12,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:09:12" (1/1) ... [2022-01-18 06:09:12,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:09:12" (1/1) ... [2022-01-18 06:09:12,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 06:09:12,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 06:09:12,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 06:09:12,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 06:09:12,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:09:12" (1/1) ... [2022-01-18 06:09:12,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 06:09:12,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:12,625 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) [2022-01-18 06:09:12,631 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 [2022-01-18 06:09:12,650 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 06:09:12,651 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 06:09:12,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 06:09:12,651 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 06:09:12,651 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 06:09:12,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 06:09:12,651 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 06:09:12,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 06:09:12,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 06:09:12,652 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-01-18 06:09:12,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 06:09:12,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 06:09:12,652 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 06:09:12,684 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 06:09:12,685 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 06:09:12,752 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 06:09:12,766 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 06:09:12,766 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 06:09:12,768 INFO L202 PluginConnector]: Adding new model send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 06:09:12 BoogieIcfgContainer [2022-01-18 06:09:12,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 06:09:12,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 06:09:12,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 06:09:12,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 06:09:12,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:09:12" (1/2) ... [2022-01-18 06:09:12,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e17059a and model type send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 06:09:12, skipping insertion in model container [2022-01-18 06:09:12,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 06:09:12" (2/2) ... [2022-01-18 06:09:12,779 INFO L111 eAbstractionObserver]: Analyzing ICFG send-receive.wvr.bpl [2022-01-18 06:09:12,783 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 06:09:12,784 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 06:09:12,784 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 06:09:12,784 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 06:09:12,830 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-18 06:09:12,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 06:09:12,872 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, 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 [2022-01-18 06:09:12,872 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 06:09:12,880 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 30 transitions, 84 flow [2022-01-18 06:09:12,914 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 147 states, 146 states have (on average 2.76027397260274) internal successors, (403), 146 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:12,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 146 states have (on average 2.76027397260274) internal successors, (403), 146 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:12,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 06:09:12,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:12,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:12,927 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:12,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:12,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1207872569, now seen corresponding path program 1 times [2022-01-18 06:09:12,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:12,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211135949] [2022-01-18 06:09:12,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:12,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:13,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:13,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:13,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211135949] [2022-01-18 06:09:13,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211135949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 06:09:13,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 06:09:13,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 06:09:13,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158416353] [2022-01-18 06:09:13,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 06:09:13,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 06:09:13,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:13,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 06:09:13,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 06:09:13,103 INFO L87 Difference]: Start difference. First operand has 147 states, 146 states have (on average 2.76027397260274) internal successors, (403), 146 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:13,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:13,170 INFO L93 Difference]: Finished difference Result 159 states and 404 transitions. [2022-01-18 06:09:13,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 06:09:13,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 06:09:13,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:13,188 INFO L225 Difference]: With dead ends: 159 [2022-01-18 06:09:13,189 INFO L226 Difference]: Without dead ends: 101 [2022-01-18 06:09:13,192 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 [2022-01-18 06:09:13,195 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 14 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:13,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 26 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:09:13,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-01-18 06:09:13,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-01-18 06:09:13,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 2.39) internal successors, (239), 100 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:13,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 239 transitions. [2022-01-18 06:09:13,263 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 239 transitions. Word has length 17 [2022-01-18 06:09:13,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:13,264 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 239 transitions. [2022-01-18 06:09:13,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:13,264 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 239 transitions. [2022-01-18 06:09:13,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 06:09:13,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:13,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:13,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 06:09:13,267 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:13,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:13,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1862171129, now seen corresponding path program 2 times [2022-01-18 06:09:13,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:13,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92397852] [2022-01-18 06:09:13,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:13,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:13,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:13,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:13,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92397852] [2022-01-18 06:09:13,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92397852] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 06:09:13,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 06:09:13,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 06:09:13,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359667850] [2022-01-18 06:09:13,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 06:09:13,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 06:09:13,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:13,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 06:09:13,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 06:09:13,321 INFO L87 Difference]: Start difference. First operand 101 states and 239 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:13,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:13,380 INFO L93 Difference]: Finished difference Result 153 states and 362 transitions. [2022-01-18 06:09:13,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 06:09:13,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 06:09:13,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:13,382 INFO L225 Difference]: With dead ends: 153 [2022-01-18 06:09:13,382 INFO L226 Difference]: Without dead ends: 123 [2022-01-18 06:09:13,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 06:09:13,384 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:13,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 33 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:09:13,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-01-18 06:09:13,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2022-01-18 06:09:13,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 2.4344262295081966) internal successors, (297), 122 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:13,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 297 transitions. [2022-01-18 06:09:13,402 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 297 transitions. Word has length 17 [2022-01-18 06:09:13,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:13,402 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 297 transitions. [2022-01-18 06:09:13,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:13,403 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 297 transitions. [2022-01-18 06:09:13,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 06:09:13,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:13,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:13,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 06:09:13,405 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:13,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:13,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1723054331, now seen corresponding path program 1 times [2022-01-18 06:09:13,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:13,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050425250] [2022-01-18 06:09:13,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:13,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:13,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:13,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:13,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050425250] [2022-01-18 06:09:13,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050425250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 06:09:13,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 06:09:13,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 06:09:13,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979719190] [2022-01-18 06:09:13,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 06:09:13,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 06:09:13,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:13,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 06:09:13,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 06:09:13,438 INFO L87 Difference]: Start difference. First operand 123 states and 297 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:13,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:13,457 INFO L93 Difference]: Finished difference Result 137 states and 328 transitions. [2022-01-18 06:09:13,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 06:09:13,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-01-18 06:09:13,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:13,459 INFO L225 Difference]: With dead ends: 137 [2022-01-18 06:09:13,460 INFO L226 Difference]: Without dead ends: 137 [2022-01-18 06:09:13,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 06:09:13,461 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:13,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 28 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:09:13,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-01-18 06:09:13,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-01-18 06:09:13,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 2.411764705882353) internal successors, (328), 136 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:13,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 328 transitions. [2022-01-18 06:09:13,475 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 328 transitions. Word has length 19 [2022-01-18 06:09:13,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:13,476 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 328 transitions. [2022-01-18 06:09:13,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:13,476 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 328 transitions. [2022-01-18 06:09:13,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 06:09:13,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:13,478 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] [2022-01-18 06:09:13,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 06:09:13,478 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:13,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:13,479 INFO L85 PathProgramCache]: Analyzing trace with hash 492267679, now seen corresponding path program 1 times [2022-01-18 06:09:13,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:13,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427764069] [2022-01-18 06:09:13,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:13,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:13,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:13,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427764069] [2022-01-18 06:09:13,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427764069] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:13,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472453975] [2022-01-18 06:09:13,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:13,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:13,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:13,578 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:13,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 06:09:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:13,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 06:09:13,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:13,883 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2022-01-18 06:09:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:13,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:14,026 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:09:14,029 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2022-01-18 06:09:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:14,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472453975] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:14,175 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:14,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-01-18 06:09:14,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579464371] [2022-01-18 06:09:14,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:14,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 06:09:14,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:14,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 06:09:14,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-18 06:09:14,182 INFO L87 Difference]: Start difference. First operand 137 states and 328 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:14,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:14,336 INFO L93 Difference]: Finished difference Result 207 states and 501 transitions. [2022-01-18 06:09:14,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 06:09:14,337 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 23 [2022-01-18 06:09:14,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:14,339 INFO L225 Difference]: With dead ends: 207 [2022-01-18 06:09:14,339 INFO L226 Difference]: Without dead ends: 177 [2022-01-18 06:09:14,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-01-18 06:09:14,340 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 79 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:14,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 97 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 06:09:14,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-01-18 06:09:14,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 157. [2022-01-18 06:09:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 2.448717948717949) internal successors, (382), 156 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 382 transitions. [2022-01-18 06:09:14,372 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 382 transitions. Word has length 23 [2022-01-18 06:09:14,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:14,373 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 382 transitions. [2022-01-18 06:09:14,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:14,373 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 382 transitions. [2022-01-18 06:09:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 06:09:14,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:14,375 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] [2022-01-18 06:09:14,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:14,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:14,576 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:14,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:14,577 INFO L85 PathProgramCache]: Analyzing trace with hash -306693953, now seen corresponding path program 1 times [2022-01-18 06:09:14,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:14,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24523845] [2022-01-18 06:09:14,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:14,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:14,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:14,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24523845] [2022-01-18 06:09:14,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24523845] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 06:09:14,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 06:09:14,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 06:09:14,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008824337] [2022-01-18 06:09:14,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 06:09:14,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 06:09:14,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:14,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 06:09:14,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 06:09:14,610 INFO L87 Difference]: Start difference. First operand 157 states and 382 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:14,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:14,634 INFO L93 Difference]: Finished difference Result 175 states and 425 transitions. [2022-01-18 06:09:14,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 06:09:14,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-01-18 06:09:14,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:14,637 INFO L225 Difference]: With dead ends: 175 [2022-01-18 06:09:14,638 INFO L226 Difference]: Without dead ends: 175 [2022-01-18 06:09:14,639 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 [2022-01-18 06:09:14,642 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:14,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 26 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:09:14,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-01-18 06:09:14,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 153. [2022-01-18 06:09:14,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.4342105263157894) internal successors, (370), 152 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:14,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 370 transitions. [2022-01-18 06:09:14,661 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 370 transitions. Word has length 23 [2022-01-18 06:09:14,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:14,662 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 370 transitions. [2022-01-18 06:09:14,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:14,662 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 370 transitions. [2022-01-18 06:09:14,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 06:09:14,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:14,663 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:14,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 06:09:14,664 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:14,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:14,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1596160095, now seen corresponding path program 2 times [2022-01-18 06:09:14,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:14,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611725634] [2022-01-18 06:09:14,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:14,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:14,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:14,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611725634] [2022-01-18 06:09:14,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611725634] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:14,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318160739] [2022-01-18 06:09:14,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:09:14,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:14,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:14,726 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:14,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 06:09:14,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:09:14,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:14,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 06:09:14,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:09:14,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 06:09:14,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318160739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 06:09:14,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 06:09:14,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-01-18 06:09:14,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207569695] [2022-01-18 06:09:14,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 06:09:14,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 06:09:14,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:14,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 06:09:14,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 06:09:14,854 INFO L87 Difference]: Start difference. First operand 153 states and 370 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:14,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:14,891 INFO L93 Difference]: Finished difference Result 401 states and 958 transitions. [2022-01-18 06:09:14,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 06:09:14,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 06:09:14,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:14,894 INFO L225 Difference]: With dead ends: 401 [2022-01-18 06:09:14,895 INFO L226 Difference]: Without dead ends: 393 [2022-01-18 06:09:14,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 06:09:14,897 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 46 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:14,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 42 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:09:14,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-01-18 06:09:14,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 259. [2022-01-18 06:09:14,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 2.5155038759689923) internal successors, (649), 258 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:14,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 649 transitions. [2022-01-18 06:09:14,927 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 649 transitions. Word has length 25 [2022-01-18 06:09:14,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:14,927 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 649 transitions. [2022-01-18 06:09:14,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:14,928 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 649 transitions. [2022-01-18 06:09:14,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 06:09:14,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:14,932 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:14,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:15,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-18 06:09:15,146 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:15,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:15,147 INFO L85 PathProgramCache]: Analyzing trace with hash 514888445, now seen corresponding path program 3 times [2022-01-18 06:09:15,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:15,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101838923] [2022-01-18 06:09:15,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:15,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:15,186 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:15,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:15,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101838923] [2022-01-18 06:09:15,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101838923] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:15,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194657532] [2022-01-18 06:09:15,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:09:15,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:15,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:15,192 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:15,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 06:09:15,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 06:09:15,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:15,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-18 06:09:15,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:15,284 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:15,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:15,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:15,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194657532] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:15,336 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:15,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-01-18 06:09:15,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39727683] [2022-01-18 06:09:15,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:15,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 06:09:15,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:15,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 06:09:15,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 06:09:15,338 INFO L87 Difference]: Start difference. First operand 259 states and 649 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:15,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:15,363 INFO L93 Difference]: Finished difference Result 363 states and 850 transitions. [2022-01-18 06:09:15,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 06:09:15,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-01-18 06:09:15,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:15,366 INFO L225 Difference]: With dead ends: 363 [2022-01-18 06:09:15,367 INFO L226 Difference]: Without dead ends: 363 [2022-01-18 06:09:15,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 06:09:15,368 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 24 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:15,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 46 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:09:15,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-01-18 06:09:15,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 319. [2022-01-18 06:09:15,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 2.39937106918239) internal successors, (763), 318 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:15,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 763 transitions. [2022-01-18 06:09:15,381 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 763 transitions. Word has length 29 [2022-01-18 06:09:15,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:15,381 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 763 transitions. [2022-01-18 06:09:15,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:15,381 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 763 transitions. [2022-01-18 06:09:15,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 06:09:15,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:15,385 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:15,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:15,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:15,608 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:15,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:15,609 INFO L85 PathProgramCache]: Analyzing trace with hash -284073187, now seen corresponding path program 1 times [2022-01-18 06:09:15,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:15,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814974864] [2022-01-18 06:09:15,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:15,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:15,789 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:15,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:15,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814974864] [2022-01-18 06:09:15,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814974864] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:15,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702493987] [2022-01-18 06:09:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:15,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:15,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:15,791 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:15,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 06:09:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:15,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 06:09:15,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:16,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:16,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:16,136 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2022-01-18 06:09:16,159 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:16,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:16,330 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:09:16,331 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 58 [2022-01-18 06:09:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:16,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702493987] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:16,497 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:16,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 06:09:16,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128292279] [2022-01-18 06:09:16,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:16,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 06:09:16,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:16,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 06:09:16,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-01-18 06:09:16,499 INFO L87 Difference]: Start difference. First operand 319 states and 763 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:16,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:16,781 INFO L93 Difference]: Finished difference Result 559 states and 1363 transitions. [2022-01-18 06:09:16,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 06:09:16,782 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 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 29 [2022-01-18 06:09:16,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:16,785 INFO L225 Difference]: With dead ends: 559 [2022-01-18 06:09:16,785 INFO L226 Difference]: Without dead ends: 519 [2022-01-18 06:09:16,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2022-01-18 06:09:16,786 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 175 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:16,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 141 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 177 Invalid, 0 Unknown, 4 Unchecked, 0.1s Time] [2022-01-18 06:09:16,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-01-18 06:09:16,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 355. [2022-01-18 06:09:16,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 2.3870056497175143) internal successors, (845), 354 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 845 transitions. [2022-01-18 06:09:16,801 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 845 transitions. Word has length 29 [2022-01-18 06:09:16,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:16,802 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 845 transitions. [2022-01-18 06:09:16,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:16,803 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 845 transitions. [2022-01-18 06:09:16,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 06:09:16,804 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:16,804 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:16,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:17,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:17,020 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:17,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:17,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1033543259, now seen corresponding path program 2 times [2022-01-18 06:09:17,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:17,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433893537] [2022-01-18 06:09:17,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:17,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:17,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:17,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433893537] [2022-01-18 06:09:17,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433893537] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:17,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272321878] [2022-01-18 06:09:17,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:09:17,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:17,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:17,164 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:17,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 06:09:17,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:09:17,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:17,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 06:09:17,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:17,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:17,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:17,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:17,450 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2022-01-18 06:09:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:17,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:17,629 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:09:17,630 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 58 [2022-01-18 06:09:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:17,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272321878] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:17,819 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:17,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 06:09:17,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375393845] [2022-01-18 06:09:17,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:17,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 06:09:17,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:17,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 06:09:17,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-01-18 06:09:17,822 INFO L87 Difference]: Start difference. First operand 355 states and 845 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:18,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:18,105 INFO L93 Difference]: Finished difference Result 601 states and 1451 transitions. [2022-01-18 06:09:18,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 06:09:18,106 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 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 29 [2022-01-18 06:09:18,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:18,108 INFO L225 Difference]: With dead ends: 601 [2022-01-18 06:09:18,109 INFO L226 Difference]: Without dead ends: 561 [2022-01-18 06:09:18,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2022-01-18 06:09:18,110 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 133 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:18,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 164 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 212 Invalid, 0 Unknown, 4 Unchecked, 0.1s Time] [2022-01-18 06:09:18,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-01-18 06:09:18,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 363. [2022-01-18 06:09:18,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 2.389502762430939) internal successors, (865), 362 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:18,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 865 transitions. [2022-01-18 06:09:18,126 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 865 transitions. Word has length 29 [2022-01-18 06:09:18,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:18,126 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 865 transitions. [2022-01-18 06:09:18,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:18,126 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 865 transitions. [2022-01-18 06:09:18,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 06:09:18,127 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:18,127 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:18,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:18,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:18,355 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:18,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:18,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1790737123, now seen corresponding path program 3 times [2022-01-18 06:09:18,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:18,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142570495] [2022-01-18 06:09:18,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:18,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:18,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:18,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142570495] [2022-01-18 06:09:18,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142570495] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:18,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519219182] [2022-01-18 06:09:18,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:09:18,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:18,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:18,507 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:18,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 06:09:18,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 06:09:18,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:18,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 06:09:18,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:18,746 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-01-18 06:09:18,747 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 19 [2022-01-18 06:09:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:18,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:18,927 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:09:18,927 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 58 [2022-01-18 06:09:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:19,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519219182] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:19,083 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:19,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-01-18 06:09:19,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15062218] [2022-01-18 06:09:19,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:19,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 06:09:19,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:19,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 06:09:19,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-01-18 06:09:19,085 INFO L87 Difference]: Start difference. First operand 363 states and 865 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:19,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:19,284 INFO L93 Difference]: Finished difference Result 495 states and 1181 transitions. [2022-01-18 06:09:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 06:09:19,285 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 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 29 [2022-01-18 06:09:19,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:19,288 INFO L225 Difference]: With dead ends: 495 [2022-01-18 06:09:19,288 INFO L226 Difference]: Without dead ends: 459 [2022-01-18 06:09:19,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2022-01-18 06:09:19,289 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 137 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:19,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 147 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 06:09:19,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-01-18 06:09:19,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 395. [2022-01-18 06:09:19,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 2.3984771573604062) internal successors, (945), 394 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 945 transitions. [2022-01-18 06:09:19,301 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 945 transitions. Word has length 29 [2022-01-18 06:09:19,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:19,301 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 945 transitions. [2022-01-18 06:09:19,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:19,302 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 945 transitions. [2022-01-18 06:09:19,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 06:09:19,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:19,303 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:19,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:19,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:19,520 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:19,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:19,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1325830121, now seen corresponding path program 4 times [2022-01-18 06:09:19,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:19,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784438100] [2022-01-18 06:09:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:19,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:19,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:19,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784438100] [2022-01-18 06:09:19,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784438100] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:19,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143496744] [2022-01-18 06:09:19,672 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:09:19,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:19,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:19,674 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:19,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 06:09:19,703 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:09:19,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:19,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 06:09:19,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:19,919 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:19,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:19,921 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2022-01-18 06:09:19,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:19,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:20,104 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:09:20,104 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 58 [2022-01-18 06:09:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:20,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143496744] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:20,310 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:20,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 06:09:20,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668444867] [2022-01-18 06:09:20,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:20,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 06:09:20,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:20,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 06:09:20,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-01-18 06:09:20,312 INFO L87 Difference]: Start difference. First operand 395 states and 945 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:20,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:20,567 INFO L93 Difference]: Finished difference Result 631 states and 1517 transitions. [2022-01-18 06:09:20,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 06:09:20,572 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 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 29 [2022-01-18 06:09:20,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:20,575 INFO L225 Difference]: With dead ends: 631 [2022-01-18 06:09:20,575 INFO L226 Difference]: Without dead ends: 591 [2022-01-18 06:09:20,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2022-01-18 06:09:20,576 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 149 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:20,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 158 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 177 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2022-01-18 06:09:20,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-01-18 06:09:20,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 397. [2022-01-18 06:09:20,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 2.3964646464646466) internal successors, (949), 396 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:20,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 949 transitions. [2022-01-18 06:09:20,590 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 949 transitions. Word has length 29 [2022-01-18 06:09:20,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:20,590 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 949 transitions. [2022-01-18 06:09:20,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:20,591 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 949 transitions. [2022-01-18 06:09:20,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-18 06:09:20,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:20,592 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:20,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:20,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:20,808 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:20,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:20,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1819743071, now seen corresponding path program 5 times [2022-01-18 06:09:20,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:20,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949995855] [2022-01-18 06:09:20,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:20,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:20,914 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:20,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:20,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949995855] [2022-01-18 06:09:20,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949995855] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:20,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815572812] [2022-01-18 06:09:20,915 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:09:20,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:20,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:20,917 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:20,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 06:09:20,960 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 06:09:20,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:20,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 06:09:20,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:21,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:21,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:21,189 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2022-01-18 06:09:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:21,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:21,386 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:09:21,386 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 58 [2022-01-18 06:09:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:21,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815572812] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:21,518 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:21,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 06:09:21,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771513810] [2022-01-18 06:09:21,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:21,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 06:09:21,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:21,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 06:09:21,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-01-18 06:09:21,520 INFO L87 Difference]: Start difference. First operand 397 states and 949 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:21,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:21,786 INFO L93 Difference]: Finished difference Result 617 states and 1487 transitions. [2022-01-18 06:09:21,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 06:09:21,786 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 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 29 [2022-01-18 06:09:21,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:21,789 INFO L225 Difference]: With dead ends: 617 [2022-01-18 06:09:21,789 INFO L226 Difference]: Without dead ends: 577 [2022-01-18 06:09:21,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2022-01-18 06:09:21,790 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 141 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:21,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 156 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 193 Invalid, 0 Unknown, 13 Unchecked, 0.1s Time] [2022-01-18 06:09:21,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-01-18 06:09:21,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 395. [2022-01-18 06:09:21,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 2.3984771573604062) internal successors, (945), 394 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:21,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 945 transitions. [2022-01-18 06:09:21,804 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 945 transitions. Word has length 29 [2022-01-18 06:09:21,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:21,804 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 945 transitions. [2022-01-18 06:09:21,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:21,804 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 945 transitions. [2022-01-18 06:09:21,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 06:09:21,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:21,806 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:21,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-18 06:09:22,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-18 06:09:22,007 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:22,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:22,007 INFO L85 PathProgramCache]: Analyzing trace with hash -835486561, now seen corresponding path program 6 times [2022-01-18 06:09:22,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:22,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889556843] [2022-01-18 06:09:22,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:22,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:22,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:22,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889556843] [2022-01-18 06:09:22,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889556843] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:22,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514799565] [2022-01-18 06:09:22,041 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:09:22,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:22,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:22,043 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:22,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 06:09:22,086 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 06:09:22,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:22,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 06:09:22,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:22,147 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:09:22,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:09:22,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514799565] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:22,205 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:22,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-01-18 06:09:22,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656453569] [2022-01-18 06:09:22,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:22,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 06:09:22,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:22,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 06:09:22,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-18 06:09:22,207 INFO L87 Difference]: Start difference. First operand 395 states and 945 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:22,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:22,249 INFO L93 Difference]: Finished difference Result 855 states and 2010 transitions. [2022-01-18 06:09:22,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 06:09:22,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 31 [2022-01-18 06:09:22,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:22,253 INFO L225 Difference]: With dead ends: 855 [2022-01-18 06:09:22,254 INFO L226 Difference]: Without dead ends: 847 [2022-01-18 06:09:22,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-18 06:09:22,255 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 51 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:22,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 78 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:09:22,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-01-18 06:09:22,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 507. [2022-01-18 06:09:22,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 2.452569169960474) internal successors, (1241), 506 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:22,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 1241 transitions. [2022-01-18 06:09:22,271 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 1241 transitions. Word has length 31 [2022-01-18 06:09:22,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:22,271 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 1241 transitions. [2022-01-18 06:09:22,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:22,271 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 1241 transitions. [2022-01-18 06:09:22,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 06:09:22,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:22,272 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:22,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:22,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-18 06:09:22,485 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:22,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:22,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1205031033, now seen corresponding path program 7 times [2022-01-18 06:09:22,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:22,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136420499] [2022-01-18 06:09:22,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:22,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:09:22,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:22,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136420499] [2022-01-18 06:09:22,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136420499] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:22,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543596802] [2022-01-18 06:09:22,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:09:22,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:22,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:22,615 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:22,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 06:09:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:22,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 06:09:22,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:22,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:22,944 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2022-01-18 06:09:22,959 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:09:22,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:23,129 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:09:23,129 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 58 [2022-01-18 06:09:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:09:23,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543596802] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:23,280 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:23,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 06:09:23,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112055405] [2022-01-18 06:09:23,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:23,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 06:09:23,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:23,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 06:09:23,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-01-18 06:09:23,282 INFO L87 Difference]: Start difference. First operand 507 states and 1241 transitions. Second operand has 16 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:23,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:23,593 INFO L93 Difference]: Finished difference Result 823 states and 2019 transitions. [2022-01-18 06:09:23,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 06:09:23,593 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 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 33 [2022-01-18 06:09:23,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:23,597 INFO L225 Difference]: With dead ends: 823 [2022-01-18 06:09:23,597 INFO L226 Difference]: Without dead ends: 787 [2022-01-18 06:09:23,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=542, Unknown=0, NotChecked=0, Total=702 [2022-01-18 06:09:23,598 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 139 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:23,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 221 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 259 Invalid, 0 Unknown, 14 Unchecked, 0.2s Time] [2022-01-18 06:09:23,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-01-18 06:09:23,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 525. [2022-01-18 06:09:23,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 524 states have (on average 2.4522900763358777) internal successors, (1285), 524 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 1285 transitions. [2022-01-18 06:09:23,617 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 1285 transitions. Word has length 33 [2022-01-18 06:09:23,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:23,617 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 1285 transitions. [2022-01-18 06:09:23,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:23,617 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 1285 transitions. [2022-01-18 06:09:23,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 06:09:23,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:23,621 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:23,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:23,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-18 06:09:23,835 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:23,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:23,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1014287105, now seen corresponding path program 8 times [2022-01-18 06:09:23,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:23,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367169056] [2022-01-18 06:09:23,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:23,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:09:23,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:23,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367169056] [2022-01-18 06:09:23,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367169056] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:23,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661321376] [2022-01-18 06:09:23,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:09:23,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:23,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:23,964 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:23,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 06:09:23,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:09:23,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:23,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 06:09:23,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:24,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:24,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:24,290 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2022-01-18 06:09:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:09:24,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:24,473 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:09:24,474 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 58 [2022-01-18 06:09:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:09:24,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661321376] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:24,609 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:24,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 06:09:24,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105783298] [2022-01-18 06:09:24,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:24,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 06:09:24,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:24,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 06:09:24,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-01-18 06:09:24,610 INFO L87 Difference]: Start difference. First operand 525 states and 1285 transitions. Second operand has 16 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:24,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:24,825 INFO L93 Difference]: Finished difference Result 891 states and 2165 transitions. [2022-01-18 06:09:24,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 06:09:24,826 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 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 33 [2022-01-18 06:09:24,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:24,830 INFO L225 Difference]: With dead ends: 891 [2022-01-18 06:09:24,830 INFO L226 Difference]: Without dead ends: 851 [2022-01-18 06:09:24,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2022-01-18 06:09:24,831 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 209 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:24,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 142 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 169 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-01-18 06:09:24,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-01-18 06:09:24,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 521. [2022-01-18 06:09:24,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 2.4596153846153848) internal successors, (1279), 520 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:24,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1279 transitions. [2022-01-18 06:09:24,847 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1279 transitions. Word has length 33 [2022-01-18 06:09:24,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:24,847 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 1279 transitions. [2022-01-18 06:09:24,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:24,848 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1279 transitions. [2022-01-18 06:09:24,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 06:09:24,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:24,849 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:24,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:25,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 06:09:25,064 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:25,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:25,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2015923837, now seen corresponding path program 9 times [2022-01-18 06:09:25,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:25,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320414845] [2022-01-18 06:09:25,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:25,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:25,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:25,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320414845] [2022-01-18 06:09:25,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320414845] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:25,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340300333] [2022-01-18 06:09:25,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:09:25,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:25,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:25,191 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:25,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 06:09:25,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 06:09:25,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:25,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 06:09:25,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:25,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:25,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:25,608 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-01-18 06:09:25,627 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:25,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:25,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:25,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:25,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:25,887 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:09:25,888 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 48 [2022-01-18 06:09:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:26,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340300333] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:26,034 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:26,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-18 06:09:26,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354044470] [2022-01-18 06:09:26,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:26,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 06:09:26,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:26,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 06:09:26,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-01-18 06:09:26,036 INFO L87 Difference]: Start difference. First operand 521 states and 1279 transitions. Second operand has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:26,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:26,343 INFO L93 Difference]: Finished difference Result 805 states and 1925 transitions. [2022-01-18 06:09:26,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 06:09:26,344 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 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 33 [2022-01-18 06:09:26,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:26,347 INFO L225 Difference]: With dead ends: 805 [2022-01-18 06:09:26,347 INFO L226 Difference]: Without dead ends: 765 [2022-01-18 06:09:26,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=622, Unknown=0, NotChecked=0, Total=812 [2022-01-18 06:09:26,348 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 160 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:26,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 158 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 123 Invalid, 0 Unknown, 67 Unchecked, 0.1s Time] [2022-01-18 06:09:26,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-01-18 06:09:26,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 517. [2022-01-18 06:09:26,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 2.4593023255813953) internal successors, (1269), 516 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:26,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 1269 transitions. [2022-01-18 06:09:26,362 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 1269 transitions. Word has length 33 [2022-01-18 06:09:26,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:26,363 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 1269 transitions. [2022-01-18 06:09:26,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:26,364 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 1269 transitions. [2022-01-18 06:09:26,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 06:09:26,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:26,365 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:26,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:26,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 06:09:26,587 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:26,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:26,588 INFO L85 PathProgramCache]: Analyzing trace with hash 479016773, now seen corresponding path program 10 times [2022-01-18 06:09:26,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:26,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607939049] [2022-01-18 06:09:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:26,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:09:26,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:26,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607939049] [2022-01-18 06:09:26,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607939049] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:26,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010276160] [2022-01-18 06:09:26,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:09:26,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:26,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:26,709 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:26,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 06:09:26,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:09:26,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:26,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 06:09:26,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:27,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:27,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:27,005 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2022-01-18 06:09:27,020 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:09:27,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:27,206 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:09:27,206 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 58 [2022-01-18 06:09:27,325 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:09:27,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010276160] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:27,325 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:27,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 06:09:27,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370837834] [2022-01-18 06:09:27,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:27,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 06:09:27,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:27,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 06:09:27,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-01-18 06:09:27,326 INFO L87 Difference]: Start difference. First operand 517 states and 1269 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:27,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:27,599 INFO L93 Difference]: Finished difference Result 919 states and 2215 transitions. [2022-01-18 06:09:27,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 06:09:27,599 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 0 states have call successors, (0), 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 33 [2022-01-18 06:09:27,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:27,602 INFO L225 Difference]: With dead ends: 919 [2022-01-18 06:09:27,602 INFO L226 Difference]: Without dead ends: 883 [2022-01-18 06:09:27,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2022-01-18 06:09:27,606 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 191 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:27,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 174 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 182 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time] [2022-01-18 06:09:27,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2022-01-18 06:09:27,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 521. [2022-01-18 06:09:27,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 2.4403846153846156) internal successors, (1269), 520 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:27,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1269 transitions. [2022-01-18 06:09:27,621 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1269 transitions. Word has length 33 [2022-01-18 06:09:27,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:27,621 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 1269 transitions. [2022-01-18 06:09:27,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:27,621 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1269 transitions. [2022-01-18 06:09:27,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-18 06:09:27,623 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:27,623 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:27,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:27,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 06:09:27,851 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:27,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:27,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1048776635, now seen corresponding path program 11 times [2022-01-18 06:09:27,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:27,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341145317] [2022-01-18 06:09:27,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:27,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:27,951 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:09:27,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:27,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341145317] [2022-01-18 06:09:27,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341145317] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:27,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530534161] [2022-01-18 06:09:27,952 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:09:27,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:27,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:27,953 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:27,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 06:09:27,986 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 06:09:27,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:27,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 06:09:27,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:28,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:28,230 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:28,231 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2022-01-18 06:09:28,246 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:09:28,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:28,397 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:09:28,397 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 58 [2022-01-18 06:09:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:09:28,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530534161] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:28,522 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:28,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 06:09:28,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967341727] [2022-01-18 06:09:28,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:28,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 06:09:28,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:28,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 06:09:28,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-01-18 06:09:28,524 INFO L87 Difference]: Start difference. First operand 521 states and 1269 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:28,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:28,736 INFO L93 Difference]: Finished difference Result 779 states and 1889 transitions. [2022-01-18 06:09:28,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 06:09:28,737 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 0 states have call successors, (0), 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 33 [2022-01-18 06:09:28,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:28,740 INFO L225 Difference]: With dead ends: 779 [2022-01-18 06:09:28,740 INFO L226 Difference]: Without dead ends: 743 [2022-01-18 06:09:28,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2022-01-18 06:09:28,740 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 151 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:28,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 132 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 149 Invalid, 0 Unknown, 6 Unchecked, 0.1s Time] [2022-01-18 06:09:28,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-01-18 06:09:28,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 463. [2022-01-18 06:09:28,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 2.448051948051948) internal successors, (1131), 462 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1131 transitions. [2022-01-18 06:09:28,752 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1131 transitions. Word has length 33 [2022-01-18 06:09:28,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:28,752 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 1131 transitions. [2022-01-18 06:09:28,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:28,752 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1131 transitions. [2022-01-18 06:09:28,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:09:28,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:28,753 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:28,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:28,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:28,954 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:28,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:28,954 INFO L85 PathProgramCache]: Analyzing trace with hash -522701061, now seen corresponding path program 12 times [2022-01-18 06:09:28,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:28,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866058507] [2022-01-18 06:09:28,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:28,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:29,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:29,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866058507] [2022-01-18 06:09:29,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866058507] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:29,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999411814] [2022-01-18 06:09:29,140 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:09:29,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:29,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:29,141 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:29,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 06:09:29,172 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 06:09:29,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:29,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:09:29,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:29,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:29,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:29,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:29,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:29,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:29,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:29,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:29,602 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 24 [2022-01-18 06:09:29,621 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:29,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:30,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:30,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:30,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:30,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:30,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:30,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:30,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:30,051 INFO L353 Elim1Store]: treesize reduction 19, result has 76.5 percent of original size [2022-01-18 06:09:30,052 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 56 treesize of output 89 [2022-01-18 06:09:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:30,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999411814] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:30,414 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:30,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-01-18 06:09:30,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033249250] [2022-01-18 06:09:30,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:30,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 06:09:30,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:30,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 06:09:30,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2022-01-18 06:09:30,415 INFO L87 Difference]: Start difference. First operand 463 states and 1131 transitions. Second operand has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:30,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:30,956 INFO L93 Difference]: Finished difference Result 1223 states and 3157 transitions. [2022-01-18 06:09:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 06:09:30,957 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 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 35 [2022-01-18 06:09:30,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:30,960 INFO L225 Difference]: With dead ends: 1223 [2022-01-18 06:09:30,960 INFO L226 Difference]: Without dead ends: 1195 [2022-01-18 06:09:30,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=324, Invalid=1316, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 06:09:30,961 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 236 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 252 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:30,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 289 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 242 Invalid, 0 Unknown, 252 Unchecked, 0.2s Time] [2022-01-18 06:09:30,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-01-18 06:09:30,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 695. [2022-01-18 06:09:30,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 694 states have (on average 2.4596541786743518) internal successors, (1707), 694 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:30,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1707 transitions. [2022-01-18 06:09:30,980 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1707 transitions. Word has length 35 [2022-01-18 06:09:30,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:30,981 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 1707 transitions. [2022-01-18 06:09:30,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:30,981 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1707 transitions. [2022-01-18 06:09:30,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:09:30,982 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:30,983 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:31,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:31,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:31,196 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:31,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:31,197 INFO L85 PathProgramCache]: Analyzing trace with hash -572389961, now seen corresponding path program 13 times [2022-01-18 06:09:31,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:31,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694246444] [2022-01-18 06:09:31,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:31,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:31,357 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:31,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:31,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694246444] [2022-01-18 06:09:31,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694246444] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:31,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454239942] [2022-01-18 06:09:31,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:09:31,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:31,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:31,359 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:31,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 06:09:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:31,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 06:09:31,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:31,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:31,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:31,734 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 24 [2022-01-18 06:09:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:31,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:32,048 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-01-18 06:09:32,048 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 112 [2022-01-18 06:09:32,383 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:32,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454239942] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:32,383 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:32,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-01-18 06:09:32,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610474090] [2022-01-18 06:09:32,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:32,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 06:09:32,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:32,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 06:09:32,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2022-01-18 06:09:32,384 INFO L87 Difference]: Start difference. First operand 695 states and 1707 transitions. Second operand has 22 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 21 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:33,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:33,169 INFO L93 Difference]: Finished difference Result 2455 states and 5992 transitions. [2022-01-18 06:09:33,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 06:09:33,170 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 21 states have internal predecessors, (73), 0 states have call successors, (0), 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 35 [2022-01-18 06:09:33,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:33,178 INFO L225 Difference]: With dead ends: 2455 [2022-01-18 06:09:33,178 INFO L226 Difference]: Without dead ends: 2091 [2022-01-18 06:09:33,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=389, Invalid=1591, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:09:33,179 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 322 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:33,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 488 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 572 Invalid, 0 Unknown, 36 Unchecked, 0.3s Time] [2022-01-18 06:09:33,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2022-01-18 06:09:33,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 751. [2022-01-18 06:09:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 2.510666666666667) internal successors, (1883), 750 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1883 transitions. [2022-01-18 06:09:33,205 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1883 transitions. Word has length 35 [2022-01-18 06:09:33,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:33,205 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 1883 transitions. [2022-01-18 06:09:33,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 21 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:33,206 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1883 transitions. [2022-01-18 06:09:33,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:09:33,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:33,207 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:33,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:33,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:33,436 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:33,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:33,436 INFO L85 PathProgramCache]: Analyzing trace with hash 469623035, now seen corresponding path program 14 times [2022-01-18 06:09:33,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:33,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343380601] [2022-01-18 06:09:33,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:33,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:33,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:33,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343380601] [2022-01-18 06:09:33,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343380601] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:33,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113834818] [2022-01-18 06:09:33,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:09:33,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:33,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:33,580 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:33,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 06:09:33,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:09:33,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:33,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 06:09:33,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:33,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:33,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:33,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:33,923 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:33,923 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:33,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:33,924 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 24 [2022-01-18 06:09:33,942 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:33,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:34,209 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-01-18 06:09:34,210 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 112 [2022-01-18 06:09:34,541 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:34,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113834818] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:34,542 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:34,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-01-18 06:09:34,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169189284] [2022-01-18 06:09:34,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:34,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 06:09:34,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:34,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 06:09:34,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2022-01-18 06:09:34,543 INFO L87 Difference]: Start difference. First operand 751 states and 1883 transitions. Second operand has 22 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 21 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:34,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:34,936 INFO L93 Difference]: Finished difference Result 1247 states and 3071 transitions. [2022-01-18 06:09:34,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 06:09:34,936 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 21 states have internal predecessors, (73), 0 states have call successors, (0), 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 35 [2022-01-18 06:09:34,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:34,940 INFO L225 Difference]: With dead ends: 1247 [2022-01-18 06:09:34,940 INFO L226 Difference]: Without dead ends: 1215 [2022-01-18 06:09:34,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=979, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 06:09:34,941 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 259 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:34,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 368 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 385 Invalid, 0 Unknown, 116 Unchecked, 0.2s Time] [2022-01-18 06:09:34,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-01-18 06:09:34,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 911. [2022-01-18 06:09:34,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 910 states have (on average 2.5153846153846153) internal successors, (2289), 910 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 2289 transitions. [2022-01-18 06:09:34,960 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 2289 transitions. Word has length 35 [2022-01-18 06:09:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:34,960 INFO L470 AbstractCegarLoop]: Abstraction has 911 states and 2289 transitions. [2022-01-18 06:09:34,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 21 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:34,961 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 2289 transitions. [2022-01-18 06:09:34,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:09:34,962 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:34,963 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:34,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:35,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:35,185 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:35,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:35,186 INFO L85 PathProgramCache]: Analyzing trace with hash 761846011, now seen corresponding path program 15 times [2022-01-18 06:09:35,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:35,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544650206] [2022-01-18 06:09:35,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:35,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:35,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:35,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544650206] [2022-01-18 06:09:35,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544650206] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:35,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283427092] [2022-01-18 06:09:35,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:09:35,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:35,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:35,336 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:35,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 06:09:35,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 06:09:35,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:35,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 06:09:35,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:35,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:35,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:35,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:35,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:35,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:35,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:35,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:35,662 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2022-01-18 06:09:35,680 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:35,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:35,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:35,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:35,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:35,966 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:35,966 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:35,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:35,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:36,011 INFO L353 Elim1Store]: treesize reduction 17, result has 78.5 percent of original size [2022-01-18 06:09:36,011 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 56 treesize of output 89 [2022-01-18 06:09:36,258 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:36,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283427092] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:36,258 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:36,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-01-18 06:09:36,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916021963] [2022-01-18 06:09:36,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:36,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 06:09:36,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:36,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 06:09:36,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-01-18 06:09:36,260 INFO L87 Difference]: Start difference. First operand 911 states and 2289 transitions. Second operand has 24 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:37,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:37,015 INFO L93 Difference]: Finished difference Result 2355 states and 5696 transitions. [2022-01-18 06:09:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 06:09:37,015 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 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 35 [2022-01-18 06:09:37,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:37,024 INFO L225 Difference]: With dead ends: 2355 [2022-01-18 06:09:37,024 INFO L226 Difference]: Without dead ends: 2015 [2022-01-18 06:09:37,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=413, Invalid=1567, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:09:37,026 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 333 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:37,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 535 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 584 Invalid, 0 Unknown, 46 Unchecked, 0.3s Time] [2022-01-18 06:09:37,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2022-01-18 06:09:37,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1151. [2022-01-18 06:09:37,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.526086956521739) internal successors, (2905), 1150 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:37,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2905 transitions. [2022-01-18 06:09:37,051 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2905 transitions. Word has length 35 [2022-01-18 06:09:37,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:37,052 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2905 transitions. [2022-01-18 06:09:37,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.1666666666666665) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:37,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2905 transitions. [2022-01-18 06:09:37,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:09:37,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:37,054 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:37,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:37,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:37,263 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:37,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:37,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1754170107, now seen corresponding path program 16 times [2022-01-18 06:09:37,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:37,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907323191] [2022-01-18 06:09:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:37,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:37,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:37,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907323191] [2022-01-18 06:09:37,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907323191] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:37,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855812061] [2022-01-18 06:09:37,413 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:09:37,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:37,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:37,414 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:37,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 06:09:37,441 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:09:37,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:37,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 06:09:37,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:37,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:37,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:37,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:37,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:37,729 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 24 [2022-01-18 06:09:37,747 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:37,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:38,017 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-01-18 06:09:38,018 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 112 [2022-01-18 06:09:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:38,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855812061] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:38,268 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:38,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2022-01-18 06:09:38,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781619320] [2022-01-18 06:09:38,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:38,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 06:09:38,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:38,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 06:09:38,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2022-01-18 06:09:38,269 INFO L87 Difference]: Start difference. First operand 1151 states and 2905 transitions. Second operand has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 20 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:38,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:38,848 INFO L93 Difference]: Finished difference Result 2075 states and 5235 transitions. [2022-01-18 06:09:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 06:09:38,848 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 20 states have internal predecessors, (69), 0 states have call successors, (0), 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 35 [2022-01-18 06:09:38,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:38,854 INFO L225 Difference]: With dead ends: 2075 [2022-01-18 06:09:38,854 INFO L226 Difference]: Without dead ends: 1915 [2022-01-18 06:09:38,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=311, Invalid=1329, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 06:09:38,855 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 254 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:38,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 320 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 461 Invalid, 0 Unknown, 96 Unchecked, 0.3s Time] [2022-01-18 06:09:38,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2022-01-18 06:09:38,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 907. [2022-01-18 06:09:38,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 906 states have (on average 2.4536423841059603) internal successors, (2223), 906 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:38,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 2223 transitions. [2022-01-18 06:09:38,877 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 2223 transitions. Word has length 35 [2022-01-18 06:09:38,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:38,877 INFO L470 AbstractCegarLoop]: Abstraction has 907 states and 2223 transitions. [2022-01-18 06:09:38,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 20 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:38,878 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 2223 transitions. [2022-01-18 06:09:38,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:09:38,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:38,880 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:38,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:39,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:39,105 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:39,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:39,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1894886651, now seen corresponding path program 17 times [2022-01-18 06:09:39,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:39,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176544927] [2022-01-18 06:09:39,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:39,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:39,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:39,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176544927] [2022-01-18 06:09:39,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176544927] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:39,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543361094] [2022-01-18 06:09:39,246 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:09:39,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:39,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:39,247 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:39,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 06:09:39,273 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 06:09:39,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:39,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 06:09:39,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:39,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:39,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:39,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:39,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:39,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:39,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:39,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:39,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:39,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 24 [2022-01-18 06:09:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:39,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:40,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:40,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:40,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:40,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:40,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:40,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:40,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:40,532 INFO L353 Elim1Store]: treesize reduction 17, result has 77.3 percent of original size [2022-01-18 06:09:40,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 52 treesize of output 85 [2022-01-18 06:09:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:40,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543361094] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:40,765 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:40,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-01-18 06:09:40,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310963159] [2022-01-18 06:09:40,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:40,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 06:09:40,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:40,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 06:09:40,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2022-01-18 06:09:40,766 INFO L87 Difference]: Start difference. First operand 907 states and 2223 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:41,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:41,297 INFO L93 Difference]: Finished difference Result 1631 states and 4051 transitions. [2022-01-18 06:09:41,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 06:09:41,298 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 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 35 [2022-01-18 06:09:41,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:41,308 INFO L225 Difference]: With dead ends: 1631 [2022-01-18 06:09:41,308 INFO L226 Difference]: Without dead ends: 1623 [2022-01-18 06:09:41,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=387, Invalid=1505, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 06:09:41,310 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 202 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 371 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:41,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 370 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 153 Invalid, 0 Unknown, 371 Unchecked, 0.1s Time] [2022-01-18 06:09:41,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2022-01-18 06:09:41,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1165. [2022-01-18 06:09:41,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 1164 states have (on average 2.481958762886598) internal successors, (2889), 1164 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:41,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 2889 transitions. [2022-01-18 06:09:41,330 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 2889 transitions. Word has length 35 [2022-01-18 06:09:41,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:41,330 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 2889 transitions. [2022-01-18 06:09:41,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:41,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 2889 transitions. [2022-01-18 06:09:41,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-18 06:09:41,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:41,333 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:41,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:41,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-01-18 06:09:41,547 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:41,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:41,548 INFO L85 PathProgramCache]: Analyzing trace with hash -583086949, now seen corresponding path program 18 times [2022-01-18 06:09:41,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:41,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098691507] [2022-01-18 06:09:41,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:41,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:41,585 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:41,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:41,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098691507] [2022-01-18 06:09:41,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098691507] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:41,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641006945] [2022-01-18 06:09:41,586 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:09:41,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:41,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:41,588 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:41,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 06:09:41,615 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 06:09:41,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:41,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 06:09:41,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:41,672 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:09:41,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:09:41,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641006945] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:41,733 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:41,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 06:09:41,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191708860] [2022-01-18 06:09:41,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:41,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 06:09:41,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:41,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 06:09:41,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-18 06:09:41,734 INFO L87 Difference]: Start difference. First operand 1165 states and 2889 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:41,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:41,769 INFO L93 Difference]: Finished difference Result 1891 states and 4573 transitions. [2022-01-18 06:09:41,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 06:09:41,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 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 37 [2022-01-18 06:09:41,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:41,773 INFO L225 Difference]: With dead ends: 1891 [2022-01-18 06:09:41,773 INFO L226 Difference]: Without dead ends: 1879 [2022-01-18 06:09:41,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-18 06:09:41,774 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 78 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:41,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 87 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:09:41,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-01-18 06:09:41,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1349. [2022-01-18 06:09:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 2.4829376854599405) internal successors, (3347), 1348 states have internal predecessors, (3347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:41,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 3347 transitions. [2022-01-18 06:09:41,792 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 3347 transitions. Word has length 37 [2022-01-18 06:09:41,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:41,792 INFO L470 AbstractCegarLoop]: Abstraction has 1349 states and 3347 transitions. [2022-01-18 06:09:41,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:41,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 3347 transitions. [2022-01-18 06:09:41,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:09:41,795 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:41,795 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:41,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-01-18 06:09:42,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-01-18 06:09:42,011 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:42,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:42,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1166349501, now seen corresponding path program 19 times [2022-01-18 06:09:42,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:42,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46776440] [2022-01-18 06:09:42,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:42,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:42,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:42,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46776440] [2022-01-18 06:09:42,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46776440] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:42,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933734834] [2022-01-18 06:09:42,149 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:09:42,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:42,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:42,152 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:42,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 06:09:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:42,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 06:09:42,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:42,422 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-01-18 06:09:42,422 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 24 [2022-01-18 06:09:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:42,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:42,695 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-01-18 06:09:42,696 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 112 [2022-01-18 06:09:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:42,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933734834] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:42,903 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:42,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-01-18 06:09:42,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040722850] [2022-01-18 06:09:42,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:42,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 06:09:42,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:42,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 06:09:42,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-01-18 06:09:42,905 INFO L87 Difference]: Start difference. First operand 1349 states and 3347 transitions. Second operand has 20 states, 20 states have (on average 3.7) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:43,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:43,250 INFO L93 Difference]: Finished difference Result 2293 states and 5681 transitions. [2022-01-18 06:09:43,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 06:09:43,251 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-18 06:09:43,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:43,255 INFO L225 Difference]: With dead ends: 2293 [2022-01-18 06:09:43,255 INFO L226 Difference]: Without dead ends: 2245 [2022-01-18 06:09:43,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:09:43,255 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 181 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:43,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 260 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 06:09:43,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2022-01-18 06:09:43,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 1389. [2022-01-18 06:09:43,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 1388 states have (on average 2.4805475504322767) internal successors, (3443), 1388 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:43,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 3443 transitions. [2022-01-18 06:09:43,305 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 3443 transitions. Word has length 39 [2022-01-18 06:09:43,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:43,305 INFO L470 AbstractCegarLoop]: Abstraction has 1389 states and 3443 transitions. [2022-01-18 06:09:43,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:43,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 3443 transitions. [2022-01-18 06:09:43,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-18 06:09:43,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:43,308 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:43,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:43,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-18 06:09:43,515 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:43,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:43,516 INFO L85 PathProgramCache]: Analyzing trace with hash -944036231, now seen corresponding path program 20 times [2022-01-18 06:09:43,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:43,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486029096] [2022-01-18 06:09:43,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:43,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:43,701 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:09:43,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:43,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486029096] [2022-01-18 06:09:43,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486029096] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:43,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075355509] [2022-01-18 06:09:43,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:09:43,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:43,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:43,703 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:43,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 06:09:43,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:09:43,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:43,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 06:09:43,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:44,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:44,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:44,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:44,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:44,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:44,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:44,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:44,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:44,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:44,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:44,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:44,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:44,189 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 29 [2022-01-18 06:09:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:44,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:44,687 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:09:44,687 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-01-18 06:09:45,020 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:45,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075355509] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:45,021 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:45,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 26 [2022-01-18 06:09:45,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265358696] [2022-01-18 06:09:45,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:45,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 06:09:45,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:45,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 06:09:45,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2022-01-18 06:09:45,022 INFO L87 Difference]: Start difference. First operand 1389 states and 3443 transitions. Second operand has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 26 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:45,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:45,885 INFO L93 Difference]: Finished difference Result 3645 states and 8966 transitions. [2022-01-18 06:09:45,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 06:09:45,886 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 26 states have internal predecessors, (91), 0 states have call successors, (0), 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 41 [2022-01-18 06:09:45,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:45,890 INFO L225 Difference]: With dead ends: 3645 [2022-01-18 06:09:45,890 INFO L226 Difference]: Without dead ends: 3285 [2022-01-18 06:09:45,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=429, Invalid=1923, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 06:09:45,891 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 305 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:45,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 695 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 894 Invalid, 0 Unknown, 107 Unchecked, 0.4s Time] [2022-01-18 06:09:45,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2022-01-18 06:09:45,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 1853. [2022-01-18 06:09:45,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1852 states have (on average 2.5026997840172784) internal successors, (4635), 1852 states have internal predecessors, (4635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:45,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 4635 transitions. [2022-01-18 06:09:45,919 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 4635 transitions. Word has length 41 [2022-01-18 06:09:45,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:45,919 INFO L470 AbstractCegarLoop]: Abstraction has 1853 states and 4635 transitions. [2022-01-18 06:09:45,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 26 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:45,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 4635 transitions. [2022-01-18 06:09:45,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-18 06:09:45,922 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:45,922 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:45,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-01-18 06:09:46,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:46,127 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:46,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:46,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1844267129, now seen corresponding path program 21 times [2022-01-18 06:09:46,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:46,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712844602] [2022-01-18 06:09:46,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:46,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:46,304 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:46,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:46,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712844602] [2022-01-18 06:09:46,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712844602] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:46,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118472668] [2022-01-18 06:09:46,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:09:46,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:46,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:46,308 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:46,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 06:09:46,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 06:09:46,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:46,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 06:09:46,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:46,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:46,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:46,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:46,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:46,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:46,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:46,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:46,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:46,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:46,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:46,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:46,792 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:46,793 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 29 [2022-01-18 06:09:46,808 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:46,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:47,232 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:09:47,232 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-01-18 06:09:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:47,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118472668] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:47,564 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:47,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 26 [2022-01-18 06:09:47,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672693830] [2022-01-18 06:09:47,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:47,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 06:09:47,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:47,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 06:09:47,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2022-01-18 06:09:47,565 INFO L87 Difference]: Start difference. First operand 1853 states and 4635 transitions. Second operand has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 26 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:48,503 INFO L93 Difference]: Finished difference Result 3743 states and 9415 transitions. [2022-01-18 06:09:48,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 06:09:48,503 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 26 states have internal predecessors, (91), 0 states have call successors, (0), 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 41 [2022-01-18 06:09:48,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:48,511 INFO L225 Difference]: With dead ends: 3743 [2022-01-18 06:09:48,511 INFO L226 Difference]: Without dead ends: 3619 [2022-01-18 06:09:48,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=421, Invalid=2029, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 06:09:48,513 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 275 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:48,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 457 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 720 Invalid, 0 Unknown, 140 Unchecked, 0.4s Time] [2022-01-18 06:09:48,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3619 states. [2022-01-18 06:09:48,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3619 to 1573. [2022-01-18 06:09:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1572 states have (on average 2.4650127226463106) internal successors, (3875), 1572 states have internal predecessors, (3875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 3875 transitions. [2022-01-18 06:09:48,551 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 3875 transitions. Word has length 41 [2022-01-18 06:09:48,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:48,551 INFO L470 AbstractCegarLoop]: Abstraction has 1573 states and 3875 transitions. [2022-01-18 06:09:48,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 26 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:48,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 3875 transitions. [2022-01-18 06:09:48,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-18 06:09:48,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:48,554 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:48,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:48,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 06:09:48,776 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:48,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:48,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1344203385, now seen corresponding path program 22 times [2022-01-18 06:09:48,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:48,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266687016] [2022-01-18 06:09:48,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:48,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:48,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:48,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266687016] [2022-01-18 06:09:48,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266687016] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:48,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799682974] [2022-01-18 06:09:48,978 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:09:48,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:48,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:48,979 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:49,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 06:09:49,014 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:09:49,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:49,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 06:09:49,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:49,515 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:49,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:49,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:49,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:49,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:49,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:49,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:49,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:49,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:49,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:49,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:49,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:49,524 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 29 [2022-01-18 06:09:49,538 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:49,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:49,989 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:09:49,989 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-01-18 06:09:50,415 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:50,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799682974] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:50,415 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:50,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2022-01-18 06:09:50,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730438812] [2022-01-18 06:09:50,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:50,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 06:09:50,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:50,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 06:09:50,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2022-01-18 06:09:50,417 INFO L87 Difference]: Start difference. First operand 1573 states and 3875 transitions. Second operand has 28 states, 28 states have (on average 3.25) internal successors, (91), 27 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:50,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:50,958 INFO L93 Difference]: Finished difference Result 2797 states and 6927 transitions. [2022-01-18 06:09:50,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 06:09:50,959 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.25) internal successors, (91), 27 states have internal predecessors, (91), 0 states have call successors, (0), 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 41 [2022-01-18 06:09:50,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:50,964 INFO L225 Difference]: With dead ends: 2797 [2022-01-18 06:09:50,964 INFO L226 Difference]: Without dead ends: 2733 [2022-01-18 06:09:50,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=319, Invalid=1661, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:09:50,965 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 279 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 307 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:50,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 426 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 534 Invalid, 0 Unknown, 307 Unchecked, 0.3s Time] [2022-01-18 06:09:50,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2022-01-18 06:09:50,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 1717. [2022-01-18 06:09:50,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1716 states have (on average 2.4702797202797204) internal successors, (4239), 1716 states have internal predecessors, (4239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:51,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 4239 transitions. [2022-01-18 06:09:51,000 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 4239 transitions. Word has length 41 [2022-01-18 06:09:51,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:51,000 INFO L470 AbstractCegarLoop]: Abstraction has 1717 states and 4239 transitions. [2022-01-18 06:09:51,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.25) internal successors, (91), 27 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:51,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 4239 transitions. [2022-01-18 06:09:51,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-18 06:09:51,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:51,003 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:51,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:51,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 06:09:51,223 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:51,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:51,224 INFO L85 PathProgramCache]: Analyzing trace with hash 432687225, now seen corresponding path program 23 times [2022-01-18 06:09:51,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:51,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526566056] [2022-01-18 06:09:51,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:51,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:51,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:51,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526566056] [2022-01-18 06:09:51,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526566056] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:51,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181183324] [2022-01-18 06:09:51,402 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:09:51,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:51,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:51,404 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:51,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 06:09:51,439 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 06:09:51,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:51,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 06:09:51,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:51,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:51,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:51,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:51,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:51,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:51,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:51,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:51,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:51,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:51,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:51,910 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:51,911 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 29 [2022-01-18 06:09:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:51,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:52,339 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:09:52,340 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-01-18 06:09:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:52,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181183324] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:52,736 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:52,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 25 [2022-01-18 06:09:52,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701610214] [2022-01-18 06:09:52,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:52,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 06:09:52,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:52,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 06:09:52,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2022-01-18 06:09:52,737 INFO L87 Difference]: Start difference. First operand 1717 states and 4239 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:54,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:54,400 INFO L93 Difference]: Finished difference Result 5605 states and 13676 transitions. [2022-01-18 06:09:54,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 06:09:54,400 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 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 41 [2022-01-18 06:09:54,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:54,411 INFO L225 Difference]: With dead ends: 5605 [2022-01-18 06:09:54,412 INFO L226 Difference]: Without dead ends: 5045 [2022-01-18 06:09:54,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1293 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=713, Invalid=3577, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 06:09:54,414 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 521 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:54,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 974 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1109 Invalid, 0 Unknown, 116 Unchecked, 0.6s Time] [2022-01-18 06:09:54,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5045 states. [2022-01-18 06:09:54,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5045 to 2341. [2022-01-18 06:09:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2341 states, 2340 states have (on average 2.503846153846154) internal successors, (5859), 2340 states have internal predecessors, (5859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:54,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 5859 transitions. [2022-01-18 06:09:54,472 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 5859 transitions. Word has length 41 [2022-01-18 06:09:54,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:54,472 INFO L470 AbstractCegarLoop]: Abstraction has 2341 states and 5859 transitions. [2022-01-18 06:09:54,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:54,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 5859 transitions. [2022-01-18 06:09:54,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-18 06:09:54,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:54,475 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:54,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:54,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:54,697 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:54,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:54,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1574040455, now seen corresponding path program 24 times [2022-01-18 06:09:54,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:54,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622731062] [2022-01-18 06:09:54,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:54,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:54,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:54,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622731062] [2022-01-18 06:09:54,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622731062] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:54,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607501123] [2022-01-18 06:09:54,888 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:09:54,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:54,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:54,892 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:54,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 06:09:54,924 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 06:09:54,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:54,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-18 06:09:54,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:55,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:55,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:55,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:55,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:55,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:55,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:55,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:55,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:55,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:55,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:55,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:55,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,399 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 31 [2022-01-18 06:09:55,413 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:55,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:55,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,792 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,793 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,793 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:55,839 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:09:55,840 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 18 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 144 [2022-01-18 06:09:56,159 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:56,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607501123] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:56,160 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:56,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2022-01-18 06:09:56,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288458200] [2022-01-18 06:09:56,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:56,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 06:09:56,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:56,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 06:09:56,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2022-01-18 06:09:56,161 INFO L87 Difference]: Start difference. First operand 2341 states and 5859 transitions. Second operand has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:57,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:57,841 INFO L93 Difference]: Finished difference Result 5941 states and 14829 transitions. [2022-01-18 06:09:57,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 06:09:57,842 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 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 41 [2022-01-18 06:09:57,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:57,851 INFO L225 Difference]: With dead ends: 5941 [2022-01-18 06:09:57,851 INFO L226 Difference]: Without dead ends: 5557 [2022-01-18 06:09:57,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=848, Invalid=3708, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 06:09:57,853 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 358 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 257 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:57,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 791 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 849 Invalid, 0 Unknown, 257 Unchecked, 0.5s Time] [2022-01-18 06:09:57,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5557 states. [2022-01-18 06:09:57,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5557 to 3585. [2022-01-18 06:09:57,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3584 states have (on average 2.507533482142857) internal successors, (8987), 3584 states have internal predecessors, (8987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:57,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 8987 transitions. [2022-01-18 06:09:57,926 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 8987 transitions. Word has length 41 [2022-01-18 06:09:57,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:57,926 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 8987 transitions. [2022-01-18 06:09:57,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:57,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 8987 transitions. [2022-01-18 06:09:57,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-18 06:09:57,930 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:57,930 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:57,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:58,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:58,143 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:09:58,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:58,144 INFO L85 PathProgramCache]: Analyzing trace with hash -777653639, now seen corresponding path program 25 times [2022-01-18 06:09:58,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:58,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695601723] [2022-01-18 06:09:58,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:58,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:58,308 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:58,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:58,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695601723] [2022-01-18 06:09:58,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695601723] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:58,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779178451] [2022-01-18 06:09:58,308 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:09:58,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:58,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:58,309 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:09:58,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 06:09:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:58,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 06:09:58,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:58,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:58,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 29 [2022-01-18 06:09:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:58,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:59,138 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:09:59,139 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-01-18 06:09:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:59,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779178451] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:59,669 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:59,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 24 [2022-01-18 06:09:59,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209085696] [2022-01-18 06:09:59,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:59,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 06:09:59,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:59,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 06:09:59,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2022-01-18 06:09:59,670 INFO L87 Difference]: Start difference. First operand 3585 states and 8987 transitions. Second operand has 25 states, 25 states have (on average 3.32) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:00,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:00,661 INFO L93 Difference]: Finished difference Result 6535 states and 16160 transitions. [2022-01-18 06:10:00,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 06:10:00,661 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 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 41 [2022-01-18 06:10:00,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:00,669 INFO L225 Difference]: With dead ends: 6535 [2022-01-18 06:10:00,669 INFO L226 Difference]: Without dead ends: 6155 [2022-01-18 06:10:00,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=487, Invalid=2269, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 06:10:00,670 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 400 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:00,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 756 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 955 Invalid, 0 Unknown, 78 Unchecked, 0.4s Time] [2022-01-18 06:10:00,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6155 states. [2022-01-18 06:10:00,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6155 to 3675. [2022-01-18 06:10:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3675 states, 3674 states have (on average 2.504899292324442) internal successors, (9203), 3674 states have internal predecessors, (9203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:00,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 9203 transitions. [2022-01-18 06:10:00,728 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 9203 transitions. Word has length 41 [2022-01-18 06:10:00,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:00,728 INFO L470 AbstractCegarLoop]: Abstraction has 3675 states and 9203 transitions. [2022-01-18 06:10:00,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:00,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 9203 transitions. [2022-01-18 06:10:00,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-18 06:10:00,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:00,732 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:00,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 06:10:00,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:00,947 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:00,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:00,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1510585977, now seen corresponding path program 26 times [2022-01-18 06:10:00,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:00,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132732819] [2022-01-18 06:10:00,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:00,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:01,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:01,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132732819] [2022-01-18 06:10:01,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132732819] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:01,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505389505] [2022-01-18 06:10:01,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:10:01,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:01,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:01,156 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:10:01,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 06:10:01,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:10:01,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:01,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 06:10:01,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:01,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:01,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:01,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:01,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:01,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:01,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:01,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:01,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:01,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 29 [2022-01-18 06:10:01,748 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:01,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:02,195 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:10:02,196 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-01-18 06:10:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:02,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505389505] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:02,653 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:02,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 25 [2022-01-18 06:10:02,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740650278] [2022-01-18 06:10:02,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:02,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 06:10:02,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:02,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 06:10:02,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2022-01-18 06:10:02,654 INFO L87 Difference]: Start difference. First operand 3675 states and 9203 transitions. Second operand has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:03,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:03,531 INFO L93 Difference]: Finished difference Result 6199 states and 15534 transitions. [2022-01-18 06:10:03,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 06:10:03,532 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 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 41 [2022-01-18 06:10:03,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:03,541 INFO L225 Difference]: With dead ends: 6199 [2022-01-18 06:10:03,542 INFO L226 Difference]: Without dead ends: 6063 [2022-01-18 06:10:03,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=445, Invalid=2207, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 06:10:03,543 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 334 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 268 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:03,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 687 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 850 Invalid, 0 Unknown, 268 Unchecked, 0.4s Time] [2022-01-18 06:10:03,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6063 states. [2022-01-18 06:10:03,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6063 to 3883. [2022-01-18 06:10:03,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3883 states, 3882 states have (on average 2.50875837197321) internal successors, (9739), 3882 states have internal predecessors, (9739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:03,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 9739 transitions. [2022-01-18 06:10:03,618 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 9739 transitions. Word has length 41 [2022-01-18 06:10:03,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:03,618 INFO L470 AbstractCegarLoop]: Abstraction has 3883 states and 9739 transitions. [2022-01-18 06:10:03,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:03,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 9739 transitions. [2022-01-18 06:10:03,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-18 06:10:03,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:03,622 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:03,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-01-18 06:10:03,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:03,845 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:03,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:03,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1985665145, now seen corresponding path program 27 times [2022-01-18 06:10:03,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:03,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971547644] [2022-01-18 06:10:03,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:03,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:04,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:04,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971547644] [2022-01-18 06:10:04,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971547644] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:04,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750885554] [2022-01-18 06:10:04,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:10:04,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:04,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:04,033 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:10:04,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 06:10:04,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 06:10:04,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:04,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-18 06:10:04,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:04,399 INFO L353 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-01-18 06:10:04,399 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 29 [2022-01-18 06:10:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:04,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:04,804 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:10:04,805 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-01-18 06:10:05,284 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:05,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750885554] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:05,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:05,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-01-18 06:10:05,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070023190] [2022-01-18 06:10:05,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:05,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 06:10:05,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:05,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 06:10:05,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2022-01-18 06:10:05,286 INFO L87 Difference]: Start difference. First operand 3883 states and 9739 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 24 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:06,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:06,062 INFO L93 Difference]: Finished difference Result 5775 states and 14411 transitions. [2022-01-18 06:10:06,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 06:10:06,063 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 24 states have internal predecessors, (79), 0 states have call successors, (0), 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 41 [2022-01-18 06:10:06,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:06,088 INFO L225 Difference]: With dead ends: 5775 [2022-01-18 06:10:06,088 INFO L226 Difference]: Without dead ends: 5715 [2022-01-18 06:10:06,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 64 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=339, Invalid=1641, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:10:06,089 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 267 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:06,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 654 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 06:10:06,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5715 states. [2022-01-18 06:10:06,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5715 to 3915. [2022-01-18 06:10:06,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3915 states, 3914 states have (on average 2.5086867654573326) internal successors, (9819), 3914 states have internal predecessors, (9819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:06,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3915 states to 3915 states and 9819 transitions. [2022-01-18 06:10:06,154 INFO L78 Accepts]: Start accepts. Automaton has 3915 states and 9819 transitions. Word has length 41 [2022-01-18 06:10:06,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:06,154 INFO L470 AbstractCegarLoop]: Abstraction has 3915 states and 9819 transitions. [2022-01-18 06:10:06,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 24 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:06,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3915 states and 9819 transitions. [2022-01-18 06:10:06,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-18 06:10:06,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:06,158 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:06,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 06:10:06,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-01-18 06:10:06,371 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:06,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:06,372 INFO L85 PathProgramCache]: Analyzing trace with hash -960272133, now seen corresponding path program 28 times [2022-01-18 06:10:06,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:06,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740536337] [2022-01-18 06:10:06,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:06,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:06,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:06,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740536337] [2022-01-18 06:10:06,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740536337] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:06,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347214106] [2022-01-18 06:10:06,419 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:10:06,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:06,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:06,421 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:10:06,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 06:10:06,454 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:10:06,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:06,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 06:10:06,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 25 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:06,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 25 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:06,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347214106] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:06,624 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:06,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-01-18 06:10:06,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754336617] [2022-01-18 06:10:06,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:06,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 06:10:06,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:06,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 06:10:06,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-18 06:10:06,625 INFO L87 Difference]: Start difference. First operand 3915 states and 9819 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:06,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:06,688 INFO L93 Difference]: Finished difference Result 5895 states and 14762 transitions. [2022-01-18 06:10:06,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 06:10:06,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 43 [2022-01-18 06:10:06,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:06,698 INFO L225 Difference]: With dead ends: 5895 [2022-01-18 06:10:06,698 INFO L226 Difference]: Without dead ends: 5887 [2022-01-18 06:10:06,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-18 06:10:06,699 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 135 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:06,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 88 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:10:06,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5887 states. [2022-01-18 06:10:06,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5887 to 5027. [2022-01-18 06:10:06,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5027 states, 5026 states have (on average 2.5250696378830084) internal successors, (12691), 5026 states have internal predecessors, (12691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:06,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5027 states to 5027 states and 12691 transitions. [2022-01-18 06:10:06,785 INFO L78 Accepts]: Start accepts. Automaton has 5027 states and 12691 transitions. Word has length 43 [2022-01-18 06:10:06,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:06,785 INFO L470 AbstractCegarLoop]: Abstraction has 5027 states and 12691 transitions. [2022-01-18 06:10:06,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:06,785 INFO L276 IsEmpty]: Start isEmpty. Operand 5027 states and 12691 transitions. [2022-01-18 06:10:06,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-18 06:10:06,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:06,791 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:06,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 06:10:07,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:07,011 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:07,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:07,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1559445547, now seen corresponding path program 29 times [2022-01-18 06:10:07,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:07,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523448762] [2022-01-18 06:10:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:07,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:07,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:07,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523448762] [2022-01-18 06:10:07,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523448762] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:07,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61449247] [2022-01-18 06:10:07,207 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:10:07,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:07,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:07,208 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:10:07,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 06:10:07,239 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 06:10:07,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:07,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 06:10:07,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:07,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:07,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:07,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:07,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:07,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:07,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:07,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:07,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:07,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:07,707 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 29 [2022-01-18 06:10:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:07,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:08,159 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:10:08,160 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-01-18 06:10:08,492 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:08,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61449247] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:08,492 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:08,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2022-01-18 06:10:08,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636798779] [2022-01-18 06:10:08,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:08,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 06:10:08,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:08,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 06:10:08,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2022-01-18 06:10:08,493 INFO L87 Difference]: Start difference. First operand 5027 states and 12691 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:09,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:09,260 INFO L93 Difference]: Finished difference Result 8863 states and 22425 transitions. [2022-01-18 06:10:09,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 06:10:09,261 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 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 45 [2022-01-18 06:10:09,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:09,276 INFO L225 Difference]: With dead ends: 8863 [2022-01-18 06:10:09,276 INFO L226 Difference]: Without dead ends: 8779 [2022-01-18 06:10:09,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=449, Invalid=2307, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 06:10:09,277 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 263 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:09,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 480 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 569 Invalid, 0 Unknown, 247 Unchecked, 0.3s Time] [2022-01-18 06:10:09,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8779 states. [2022-01-18 06:10:09,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8779 to 5811. [2022-01-18 06:10:09,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5811 states, 5810 states have (on average 2.510671256454389) internal successors, (14587), 5810 states have internal predecessors, (14587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:09,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5811 states to 5811 states and 14587 transitions. [2022-01-18 06:10:09,364 INFO L78 Accepts]: Start accepts. Automaton has 5811 states and 14587 transitions. Word has length 45 [2022-01-18 06:10:09,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:09,364 INFO L470 AbstractCegarLoop]: Abstraction has 5811 states and 14587 transitions. [2022-01-18 06:10:09,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:09,364 INFO L276 IsEmpty]: Start isEmpty. Operand 5811 states and 14587 transitions. [2022-01-18 06:10:09,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-18 06:10:09,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:09,369 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:09,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-01-18 06:10:09,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:09,570 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:09,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:09,570 INFO L85 PathProgramCache]: Analyzing trace with hash 88103917, now seen corresponding path program 30 times [2022-01-18 06:10:09,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:09,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029628202] [2022-01-18 06:10:09,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:09,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:09,765 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:09,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:09,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029628202] [2022-01-18 06:10:09,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029628202] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:09,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827639926] [2022-01-18 06:10:09,765 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:10:09,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:09,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:09,766 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:10:09,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 06:10:09,791 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 06:10:09,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:09,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 06:10:09,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:10,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,283 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:10,283 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:10,284 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 29 [2022-01-18 06:10:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:10,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:10,735 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:10:10,735 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-01-18 06:10:11,173 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:11,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827639926] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:11,173 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:11,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2022-01-18 06:10:11,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500515430] [2022-01-18 06:10:11,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:11,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 06:10:11,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:11,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 06:10:11,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2022-01-18 06:10:11,175 INFO L87 Difference]: Start difference. First operand 5811 states and 14587 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:12,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:12,002 INFO L93 Difference]: Finished difference Result 9923 states and 24777 transitions. [2022-01-18 06:10:12,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 06:10:12,003 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 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 45 [2022-01-18 06:10:12,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:12,017 INFO L225 Difference]: With dead ends: 9923 [2022-01-18 06:10:12,017 INFO L226 Difference]: Without dead ends: 9791 [2022-01-18 06:10:12,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=478, Invalid=2384, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 06:10:12,018 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 264 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:12,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 473 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 555 Invalid, 0 Unknown, 247 Unchecked, 0.3s Time] [2022-01-18 06:10:12,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9791 states. [2022-01-18 06:10:12,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9791 to 6547. [2022-01-18 06:10:12,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6547 states, 6546 states have (on average 2.486862205927284) internal successors, (16279), 6546 states have internal predecessors, (16279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:12,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6547 states to 6547 states and 16279 transitions. [2022-01-18 06:10:12,134 INFO L78 Accepts]: Start accepts. Automaton has 6547 states and 16279 transitions. Word has length 45 [2022-01-18 06:10:12,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:12,135 INFO L470 AbstractCegarLoop]: Abstraction has 6547 states and 16279 transitions. [2022-01-18 06:10:12,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:12,135 INFO L276 IsEmpty]: Start isEmpty. Operand 6547 states and 16279 transitions. [2022-01-18 06:10:12,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-18 06:10:12,141 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:12,141 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:12,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-01-18 06:10:12,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 06:10:12,342 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:12,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:12,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1359178197, now seen corresponding path program 31 times [2022-01-18 06:10:12,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:12,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558222765] [2022-01-18 06:10:12,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:12,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:12,538 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:12,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:12,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558222765] [2022-01-18 06:10:12,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558222765] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:12,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750432872] [2022-01-18 06:10:12,539 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:10:12,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:12,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:12,544 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:10:12,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 06:10:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:12,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 06:10:12,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:13,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:13,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:13,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:13,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:13,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:13,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:13,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:13,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:13,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:13,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:13,146 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 29 [2022-01-18 06:10:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:13,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:13,602 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:10:13,603 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-01-18 06:10:13,851 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 8 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:13,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750432872] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:13,851 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:13,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 25 [2022-01-18 06:10:13,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937347466] [2022-01-18 06:10:13,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:13,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 06:10:13,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:13,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 06:10:13,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2022-01-18 06:10:13,853 INFO L87 Difference]: Start difference. First operand 6547 states and 16279 transitions. Second operand has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 25 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:14,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:14,793 INFO L93 Difference]: Finished difference Result 10107 states and 25241 transitions. [2022-01-18 06:10:14,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 06:10:14,794 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 25 states have internal predecessors, (92), 0 states have call successors, (0), 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 45 [2022-01-18 06:10:14,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:14,808 INFO L225 Difference]: With dead ends: 10107 [2022-01-18 06:10:14,808 INFO L226 Difference]: Without dead ends: 9999 [2022-01-18 06:10:14,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 77 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=546, Invalid=2646, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 06:10:14,809 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 345 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 470 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:14,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 604 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 621 Invalid, 0 Unknown, 470 Unchecked, 0.3s Time] [2022-01-18 06:10:14,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9999 states. [2022-01-18 06:10:14,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9999 to 6387. [2022-01-18 06:10:14,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6387 states, 6386 states have (on average 2.485280300657689) internal successors, (15871), 6386 states have internal predecessors, (15871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:14,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6387 states to 6387 states and 15871 transitions. [2022-01-18 06:10:14,918 INFO L78 Accepts]: Start accepts. Automaton has 6387 states and 15871 transitions. Word has length 45 [2022-01-18 06:10:14,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:14,918 INFO L470 AbstractCegarLoop]: Abstraction has 6387 states and 15871 transitions. [2022-01-18 06:10:14,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 25 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:14,918 INFO L276 IsEmpty]: Start isEmpty. Operand 6387 states and 15871 transitions. [2022-01-18 06:10:14,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-18 06:10:14,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:14,924 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:14,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-01-18 06:10:15,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-01-18 06:10:15,125 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:15,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:15,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2106655175, now seen corresponding path program 32 times [2022-01-18 06:10:15,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:15,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353856696] [2022-01-18 06:10:15,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:15,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:15,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:15,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353856696] [2022-01-18 06:10:15,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353856696] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:15,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899650826] [2022-01-18 06:10:15,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:10:15,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:15,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:15,347 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:10:15,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 06:10:15,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:10:15,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:15,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 06:10:15,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:15,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:15,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:15,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:15,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:15,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:15,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:15,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:15,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:15,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:15,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:15,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:15,873 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 29 [2022-01-18 06:10:15,895 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:15,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:16,343 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:10:16,344 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 186 [2022-01-18 06:10:16,831 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:16,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899650826] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:16,831 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:16,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2022-01-18 06:10:16,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936415751] [2022-01-18 06:10:16,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:16,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 06:10:16,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:16,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 06:10:16,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2022-01-18 06:10:16,833 INFO L87 Difference]: Start difference. First operand 6387 states and 15871 transitions. Second operand has 27 states, 27 states have (on average 3.5925925925925926) internal successors, (97), 26 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:18,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:18,020 INFO L93 Difference]: Finished difference Result 12507 states and 29791 transitions. [2022-01-18 06:10:18,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 06:10:18,021 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5925925925925926) internal successors, (97), 26 states have internal predecessors, (97), 0 states have call successors, (0), 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 45 [2022-01-18 06:10:18,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:18,044 INFO L225 Difference]: With dead ends: 12507 [2022-01-18 06:10:18,044 INFO L226 Difference]: Without dead ends: 12399 [2022-01-18 06:10:18,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=620, Invalid=3162, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 06:10:18,045 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 349 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 543 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:18,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 701 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 813 Invalid, 0 Unknown, 543 Unchecked, 0.4s Time] [2022-01-18 06:10:18,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12399 states. [2022-01-18 06:10:18,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12399 to 5773. [2022-01-18 06:10:18,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5773 states, 5772 states have (on average 2.41978516978517) internal successors, (13967), 5772 states have internal predecessors, (13967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:18,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5773 states to 5773 states and 13967 transitions. [2022-01-18 06:10:18,206 INFO L78 Accepts]: Start accepts. Automaton has 5773 states and 13967 transitions. Word has length 45 [2022-01-18 06:10:18,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:18,206 INFO L470 AbstractCegarLoop]: Abstraction has 5773 states and 13967 transitions. [2022-01-18 06:10:18,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5925925925925926) internal successors, (97), 26 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:18,206 INFO L276 IsEmpty]: Start isEmpty. Operand 5773 states and 13967 transitions. [2022-01-18 06:10:18,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-18 06:10:18,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:18,213 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:18,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-01-18 06:10:18,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 06:10:18,427 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:18,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:18,428 INFO L85 PathProgramCache]: Analyzing trace with hash 449040727, now seen corresponding path program 33 times [2022-01-18 06:10:18,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:18,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115942337] [2022-01-18 06:10:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:18,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:18,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:18,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115942337] [2022-01-18 06:10:18,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115942337] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:18,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586423914] [2022-01-18 06:10:18,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:10:18,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:18,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:18,647 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:10:18,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 06:10:18,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 06:10:18,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:18,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 06:10:18,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:19,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:19,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:19,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:19,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:19,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:19,567 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 34 [2022-01-18 06:10:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:19,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:20,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,093 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,093 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:20,141 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:10:20,141 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 90 treesize of output 204 [2022-01-18 06:10:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:20,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586423914] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:20,696 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:20,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 33 [2022-01-18 06:10:20,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715485781] [2022-01-18 06:10:20,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:20,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 06:10:20,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:20,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 06:10:20,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 06:10:20,697 INFO L87 Difference]: Start difference. First operand 5773 states and 13967 transitions. Second operand has 34 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 33 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:22,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:22,965 INFO L93 Difference]: Finished difference Result 12693 states and 31061 transitions. [2022-01-18 06:10:22,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 06:10:22,966 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 33 states have internal predecessors, (109), 0 states have call successors, (0), 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 47 [2022-01-18 06:10:22,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:22,983 INFO L225 Difference]: With dead ends: 12693 [2022-01-18 06:10:22,983 INFO L226 Difference]: Without dead ends: 12637 [2022-01-18 06:10:22,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3107 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1357, Invalid=8345, Unknown=0, NotChecked=0, Total=9702 [2022-01-18 06:10:22,985 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 375 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 712 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:22,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 871 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 750 Invalid, 0 Unknown, 712 Unchecked, 0.5s Time] [2022-01-18 06:10:22,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12637 states. [2022-01-18 06:10:23,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12637 to 7479. [2022-01-18 06:10:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7479 states, 7478 states have (on average 2.4352768119818133) internal successors, (18211), 7478 states have internal predecessors, (18211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:23,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7479 states to 7479 states and 18211 transitions. [2022-01-18 06:10:23,161 INFO L78 Accepts]: Start accepts. Automaton has 7479 states and 18211 transitions. Word has length 47 [2022-01-18 06:10:23,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:23,162 INFO L470 AbstractCegarLoop]: Abstraction has 7479 states and 18211 transitions. [2022-01-18 06:10:23,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 33 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:23,162 INFO L276 IsEmpty]: Start isEmpty. Operand 7479 states and 18211 transitions. [2022-01-18 06:10:23,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-18 06:10:23,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:23,171 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:23,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-18 06:10:23,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-18 06:10:23,387 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:23,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:23,388 INFO L85 PathProgramCache]: Analyzing trace with hash -927302825, now seen corresponding path program 34 times [2022-01-18 06:10:23,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:23,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602257409] [2022-01-18 06:10:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:23,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:23,618 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:23,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:23,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602257409] [2022-01-18 06:10:23,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602257409] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:23,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011861773] [2022-01-18 06:10:23,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:10:23,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:23,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:23,622 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:10:23,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 06:10:23,654 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:10:23,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:23,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 44 conjunts are in the unsatisfiable core [2022-01-18 06:10:23,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:24,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:24,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,284 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:24,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:24,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:24,287 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 34 [2022-01-18 06:10:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:24,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:25,018 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:10:25,018 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-01-18 06:10:25,604 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:25,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011861773] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:25,604 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:25,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 32 [2022-01-18 06:10:25,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748235805] [2022-01-18 06:10:25,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:25,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 06:10:25,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:25,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 06:10:25,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 06:10:25,605 INFO L87 Difference]: Start difference. First operand 7479 states and 18211 transitions. Second operand has 33 states, 33 states have (on average 3.303030303030303) internal successors, (109), 32 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:27,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:27,604 INFO L93 Difference]: Finished difference Result 20975 states and 51028 transitions. [2022-01-18 06:10:27,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 06:10:27,604 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.303030303030303) internal successors, (109), 32 states have internal predecessors, (109), 0 states have call successors, (0), 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 47 [2022-01-18 06:10:27,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:27,640 INFO L225 Difference]: With dead ends: 20975 [2022-01-18 06:10:27,640 INFO L226 Difference]: Without dead ends: 20699 [2022-01-18 06:10:27,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2218 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1107, Invalid=6203, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 06:10:27,641 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 456 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 343 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:27,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [456 Valid, 883 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1036 Invalid, 0 Unknown, 343 Unchecked, 0.6s Time] [2022-01-18 06:10:27,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20699 states. [2022-01-18 06:10:27,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20699 to 9383. [2022-01-18 06:10:27,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9383 states, 9382 states have (on average 2.4379663184822) internal successors, (22873), 9382 states have internal predecessors, (22873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:27,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9383 states to 9383 states and 22873 transitions. [2022-01-18 06:10:27,889 INFO L78 Accepts]: Start accepts. Automaton has 9383 states and 22873 transitions. Word has length 47 [2022-01-18 06:10:27,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:27,889 INFO L470 AbstractCegarLoop]: Abstraction has 9383 states and 22873 transitions. [2022-01-18 06:10:27,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.303030303030303) internal successors, (109), 32 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:27,889 INFO L276 IsEmpty]: Start isEmpty. Operand 9383 states and 22873 transitions. [2022-01-18 06:10:27,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-18 06:10:27,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:27,904 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:27,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-01-18 06:10:28,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:28,114 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:28,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:28,115 INFO L85 PathProgramCache]: Analyzing trace with hash -266221225, now seen corresponding path program 35 times [2022-01-18 06:10:28,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:28,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546195711] [2022-01-18 06:10:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:28,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:28,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:28,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546195711] [2022-01-18 06:10:28,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546195711] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:28,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305015436] [2022-01-18 06:10:28,346 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:10:28,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:28,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:28,356 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:10:28,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 06:10:28,425 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 06:10:28,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:28,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 43 conjunts are in the unsatisfiable core [2022-01-18 06:10:28,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:29,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,067 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:29,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,075 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 32 [2022-01-18 06:10:29,090 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 9 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:29,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:29,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:29,624 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:10:29,624 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 94 treesize of output 208 [2022-01-18 06:10:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 9 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:29,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305015436] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:29,901 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:29,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 33 [2022-01-18 06:10:29,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549486332] [2022-01-18 06:10:29,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:29,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 06:10:29,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:29,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 06:10:29,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=922, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 06:10:29,902 INFO L87 Difference]: Start difference. First operand 9383 states and 22873 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:31,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:31,839 INFO L93 Difference]: Finished difference Result 16167 states and 39541 transitions. [2022-01-18 06:10:31,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 06:10:31,840 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 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 47 [2022-01-18 06:10:31,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:31,867 INFO L225 Difference]: With dead ends: 16167 [2022-01-18 06:10:31,867 INFO L226 Difference]: Without dead ends: 15559 [2022-01-18 06:10:31,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=856, Invalid=4546, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 06:10:31,868 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 425 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:31,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 1012 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1179 Invalid, 0 Unknown, 197 Unchecked, 0.7s Time] [2022-01-18 06:10:31,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15559 states. [2022-01-18 06:10:32,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15559 to 11567. [2022-01-18 06:10:32,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11567 states, 11566 states have (on average 2.4375756527753762) internal successors, (28193), 11566 states have internal predecessors, (28193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:32,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11567 states to 11567 states and 28193 transitions. [2022-01-18 06:10:32,108 INFO L78 Accepts]: Start accepts. Automaton has 11567 states and 28193 transitions. Word has length 47 [2022-01-18 06:10:32,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:32,109 INFO L470 AbstractCegarLoop]: Abstraction has 11567 states and 28193 transitions. [2022-01-18 06:10:32,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:32,109 INFO L276 IsEmpty]: Start isEmpty. Operand 11567 states and 28193 transitions. [2022-01-18 06:10:32,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-18 06:10:32,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:32,121 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:32,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-01-18 06:10:32,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-01-18 06:10:32,322 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:32,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:32,322 INFO L85 PathProgramCache]: Analyzing trace with hash 219710227, now seen corresponding path program 36 times [2022-01-18 06:10:32,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:32,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382000864] [2022-01-18 06:10:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:32,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 57 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 06:10:32,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:32,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382000864] [2022-01-18 06:10:32,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382000864] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:32,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636663147] [2022-01-18 06:10:32,571 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:10:32,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:32,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:32,573 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:10:32,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 06:10:32,618 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 06:10:32,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:32,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 06:10:32,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:33,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:33,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:33,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:33,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:33,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:33,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:33,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:33,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:33,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:33,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:33,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:33,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:33,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:33,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:33,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:33,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:33,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:33,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:33,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:33,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:33,352 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-01-18 06:10:33,366 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:33,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:34,054 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:10:34,055 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-01-18 06:10:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 9 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:35,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636663147] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:35,062 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:35,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 32 [2022-01-18 06:10:35,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104556740] [2022-01-18 06:10:35,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:35,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 06:10:35,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:35,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 06:10:35,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=874, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 06:10:35,064 INFO L87 Difference]: Start difference. First operand 11567 states and 28193 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:37,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:37,039 INFO L93 Difference]: Finished difference Result 19547 states and 48071 transitions. [2022-01-18 06:10:37,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 06:10:37,039 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 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 47 [2022-01-18 06:10:37,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:37,077 INFO L225 Difference]: With dead ends: 19547 [2022-01-18 06:10:37,078 INFO L226 Difference]: Without dead ends: 18903 [2022-01-18 06:10:37,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1657 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=852, Invalid=4848, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 06:10:37,079 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 586 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 235 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:37,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 1159 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1532 Invalid, 0 Unknown, 235 Unchecked, 0.8s Time] [2022-01-18 06:10:37,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18903 states. [2022-01-18 06:10:37,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18903 to 12311. [2022-01-18 06:10:37,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12311 states, 12310 states have (on average 2.4398862713241267) internal successors, (30035), 12310 states have internal predecessors, (30035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:37,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12311 states to 12311 states and 30035 transitions. [2022-01-18 06:10:37,357 INFO L78 Accepts]: Start accepts. Automaton has 12311 states and 30035 transitions. Word has length 47 [2022-01-18 06:10:37,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:37,357 INFO L470 AbstractCegarLoop]: Abstraction has 12311 states and 30035 transitions. [2022-01-18 06:10:37,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:37,358 INFO L276 IsEmpty]: Start isEmpty. Operand 12311 states and 30035 transitions. [2022-01-18 06:10:37,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-18 06:10:37,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:37,371 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:37,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-18 06:10:37,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-01-18 06:10:37,572 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:37,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:37,573 INFO L85 PathProgramCache]: Analyzing trace with hash 866819415, now seen corresponding path program 37 times [2022-01-18 06:10:37,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:37,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680156027] [2022-01-18 06:10:37,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:37,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:37,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:37,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680156027] [2022-01-18 06:10:37,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680156027] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:37,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061279431] [2022-01-18 06:10:37,803 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:10:37,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:37,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:37,804 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:10:37,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 06:10:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:37,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 44 conjunts are in the unsatisfiable core [2022-01-18 06:10:37,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:38,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:38,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:38,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:38,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:38,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:38,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:38,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:38,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:38,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:38,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:38,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:38,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:38,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:38,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:38,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:38,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:38,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:38,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:38,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:38,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:38,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:38,491 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 34 [2022-01-18 06:10:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:38,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:39,210 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:10:39,211 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-01-18 06:10:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 9 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:40,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061279431] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:40,056 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:40,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 33 [2022-01-18 06:10:40,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505437640] [2022-01-18 06:10:40,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:40,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 06:10:40,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:40,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 06:10:40,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 06:10:40,057 INFO L87 Difference]: Start difference. First operand 12311 states and 30035 transitions. Second operand has 34 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 33 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:41,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:41,835 INFO L93 Difference]: Finished difference Result 17583 states and 43229 transitions. [2022-01-18 06:10:41,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 06:10:41,835 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 33 states have internal predecessors, (109), 0 states have call successors, (0), 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 47 [2022-01-18 06:10:41,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:41,868 INFO L225 Difference]: With dead ends: 17583 [2022-01-18 06:10:41,869 INFO L226 Difference]: Without dead ends: 17331 [2022-01-18 06:10:41,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=970, Invalid=5350, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 06:10:41,870 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 592 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 423 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:41,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 769 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 989 Invalid, 0 Unknown, 423 Unchecked, 0.6s Time] [2022-01-18 06:10:41,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17331 states. [2022-01-18 06:10:42,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17331 to 3579. [2022-01-18 06:10:42,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3579 states, 3578 states have (on average 2.4893795416433764) internal successors, (8907), 3578 states have internal predecessors, (8907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:42,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 8907 transitions. [2022-01-18 06:10:42,113 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 8907 transitions. Word has length 47 [2022-01-18 06:10:42,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:42,113 INFO L470 AbstractCegarLoop]: Abstraction has 3579 states and 8907 transitions. [2022-01-18 06:10:42,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 33 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:42,113 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 8907 transitions. [2022-01-18 06:10:42,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-18 06:10:42,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:42,117 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:42,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-01-18 06:10:42,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-01-18 06:10:42,317 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:42,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:42,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1343535273, now seen corresponding path program 38 times [2022-01-18 06:10:42,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:42,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388757814] [2022-01-18 06:10:42,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:42,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:42,568 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:42,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:42,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388757814] [2022-01-18 06:10:42,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388757814] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:42,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673839265] [2022-01-18 06:10:42,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:10:42,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:42,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:42,572 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:10:42,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 06:10:42,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:10:42,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:42,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 44 conjunts are in the unsatisfiable core [2022-01-18 06:10:42,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:43,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:43,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:43,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:43,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:43,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:43,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:43,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:43,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:43,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:43,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:43,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:43,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:43,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:43,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:43,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:43,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:43,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:43,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:43,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:43,399 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:43,400 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 34 [2022-01-18 06:10:43,416 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:43,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:44,105 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:10:44,105 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-01-18 06:10:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 15 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:44,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673839265] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:44,678 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:44,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 33 [2022-01-18 06:10:44,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781602419] [2022-01-18 06:10:44,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:44,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 06:10:44,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:44,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 06:10:44,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 06:10:44,679 INFO L87 Difference]: Start difference. First operand 3579 states and 8907 transitions. Second operand has 34 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 33 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:45,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:45,844 INFO L93 Difference]: Finished difference Result 8303 states and 20655 transitions. [2022-01-18 06:10:45,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 06:10:45,845 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 33 states have internal predecessors, (109), 0 states have call successors, (0), 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 47 [2022-01-18 06:10:45,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:45,859 INFO L225 Difference]: With dead ends: 8303 [2022-01-18 06:10:45,859 INFO L226 Difference]: Without dead ends: 8235 [2022-01-18 06:10:45,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1061 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=571, Invalid=3461, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 06:10:45,860 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 374 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 483 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:45,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 816 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 911 Invalid, 0 Unknown, 483 Unchecked, 0.5s Time] [2022-01-18 06:10:45,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8235 states. [2022-01-18 06:10:45,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8235 to 4387. [2022-01-18 06:10:45,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4387 states, 4386 states have (on average 2.4817601459188325) internal successors, (10885), 4386 states have internal predecessors, (10885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:45,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4387 states to 4387 states and 10885 transitions. [2022-01-18 06:10:45,951 INFO L78 Accepts]: Start accepts. Automaton has 4387 states and 10885 transitions. Word has length 47 [2022-01-18 06:10:45,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:45,951 INFO L470 AbstractCegarLoop]: Abstraction has 4387 states and 10885 transitions. [2022-01-18 06:10:45,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 33 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:45,951 INFO L276 IsEmpty]: Start isEmpty. Operand 4387 states and 10885 transitions. [2022-01-18 06:10:45,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-18 06:10:45,956 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:45,956 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:45,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-01-18 06:10:46,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:46,156 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:46,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:46,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1902581417, now seen corresponding path program 39 times [2022-01-18 06:10:46,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:46,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569339093] [2022-01-18 06:10:46,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:46,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:46,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:46,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569339093] [2022-01-18 06:10:46,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569339093] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:46,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585884105] [2022-01-18 06:10:46,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:10:46,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:46,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:46,432 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:10:46,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 06:10:46,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 06:10:46,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:46,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 06:10:46,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:47,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:47,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:47,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:47,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:47,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:47,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:47,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:47,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:47,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:47,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:47,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:47,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:47,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:47,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:47,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:47,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:47,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:47,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:47,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:47,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:47,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-01-18 06:10:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:47,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:47,870 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:10:47,871 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-01-18 06:10:48,700 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:48,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585884105] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:48,701 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:48,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 32 [2022-01-18 06:10:48,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612447431] [2022-01-18 06:10:48,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:48,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 06:10:48,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:48,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 06:10:48,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=878, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 06:10:48,702 INFO L87 Difference]: Start difference. First operand 4387 states and 10885 transitions. Second operand has 33 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:50,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:50,488 INFO L93 Difference]: Finished difference Result 7415 states and 18483 transitions. [2022-01-18 06:10:50,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 06:10:50,489 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 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 47 [2022-01-18 06:10:50,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:50,501 INFO L225 Difference]: With dead ends: 7415 [2022-01-18 06:10:50,501 INFO L226 Difference]: Without dead ends: 7351 [2022-01-18 06:10:50,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=987, Invalid=5175, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 06:10:50,502 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 460 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 288 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:50,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 715 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1156 Invalid, 0 Unknown, 288 Unchecked, 0.6s Time] [2022-01-18 06:10:50,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7351 states. [2022-01-18 06:10:50,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7351 to 3547. [2022-01-18 06:10:50,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3547 states, 3546 states have (on average 2.484771573604061) internal successors, (8811), 3546 states have internal predecessors, (8811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:50,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3547 states to 3547 states and 8811 transitions. [2022-01-18 06:10:50,579 INFO L78 Accepts]: Start accepts. Automaton has 3547 states and 8811 transitions. Word has length 47 [2022-01-18 06:10:50,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:50,579 INFO L470 AbstractCegarLoop]: Abstraction has 3547 states and 8811 transitions. [2022-01-18 06:10:50,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:50,579 INFO L276 IsEmpty]: Start isEmpty. Operand 3547 states and 8811 transitions. [2022-01-18 06:10:50,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-18 06:10:50,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:50,582 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:50,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-01-18 06:10:50,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:50,784 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:50,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:50,784 INFO L85 PathProgramCache]: Analyzing trace with hash 574804311, now seen corresponding path program 40 times [2022-01-18 06:10:50,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:50,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206850946] [2022-01-18 06:10:50,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:50,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:51,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:51,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206850946] [2022-01-18 06:10:51,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206850946] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:51,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963147548] [2022-01-18 06:10:51,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:10:51,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:51,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:51,028 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:10:51,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 06:10:51,060 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:10:51,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:51,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 06:10:51,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:51,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:51,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:51,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:51,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:51,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:51,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:51,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:51,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:51,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:51,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:51,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:51,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:51,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:51,793 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-01-18 06:10:51,807 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 9 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:51,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:52,481 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:10:52,482 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-01-18 06:10:53,169 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:53,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963147548] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:53,169 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:53,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 30 [2022-01-18 06:10:53,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406987034] [2022-01-18 06:10:53,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:53,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:10:53,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:53,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:10:53,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:10:53,170 INFO L87 Difference]: Start difference. First operand 3547 states and 8811 transitions. Second operand has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 30 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:54,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:54,751 INFO L93 Difference]: Finished difference Result 8735 states and 21574 transitions. [2022-01-18 06:10:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 06:10:54,751 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 30 states have internal predecessors, (101), 0 states have call successors, (0), 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 47 [2022-01-18 06:10:54,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:54,764 INFO L225 Difference]: With dead ends: 8735 [2022-01-18 06:10:54,764 INFO L226 Difference]: Without dead ends: 8287 [2022-01-18 06:10:54,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 76 SyntacticMatches, 5 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1193 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=675, Invalid=3485, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 06:10:54,765 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 591 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:54,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [591 Valid, 991 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1122 Invalid, 0 Unknown, 111 Unchecked, 0.6s Time] [2022-01-18 06:10:54,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8287 states. [2022-01-18 06:10:54,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8287 to 4811. [2022-01-18 06:10:54,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4811 states, 4810 states have (on average 2.5054054054054054) internal successors, (12051), 4810 states have internal predecessors, (12051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:54,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4811 states to 4811 states and 12051 transitions. [2022-01-18 06:10:54,849 INFO L78 Accepts]: Start accepts. Automaton has 4811 states and 12051 transitions. Word has length 47 [2022-01-18 06:10:54,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:54,849 INFO L470 AbstractCegarLoop]: Abstraction has 4811 states and 12051 transitions. [2022-01-18 06:10:54,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 30 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:54,850 INFO L276 IsEmpty]: Start isEmpty. Operand 4811 states and 12051 transitions. [2022-01-18 06:10:54,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-18 06:10:54,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:54,854 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:54,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-01-18 06:10:55,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-01-18 06:10:55,056 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:55,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:55,056 INFO L85 PathProgramCache]: Analyzing trace with hash -641493673, now seen corresponding path program 41 times [2022-01-18 06:10:55,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:55,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809274405] [2022-01-18 06:10:55,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:55,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:55,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:55,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809274405] [2022-01-18 06:10:55,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809274405] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:55,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695738432] [2022-01-18 06:10:55,291 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:10:55,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:55,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:55,292 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:10:55,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 06:10:55,321 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 06:10:55,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:55,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 06:10:55,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:55,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:55,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:55,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:55,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:55,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:55,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:55,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:55,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:55,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:55,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:55,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:55,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:55,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:55,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:55,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:55,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:55,913 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-01-18 06:10:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 9 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:55,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:56,609 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:10:56,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-01-18 06:10:57,494 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:57,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695738432] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:57,494 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:57,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 30 [2022-01-18 06:10:57,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003055901] [2022-01-18 06:10:57,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:57,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:10:57,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:57,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:10:57,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:10:57,495 INFO L87 Difference]: Start difference. First operand 4811 states and 12051 transitions. Second operand has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 30 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:59,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:59,757 INFO L93 Difference]: Finished difference Result 10887 states and 27061 transitions. [2022-01-18 06:10:59,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 06:10:59,758 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 30 states have internal predecessors, (101), 0 states have call successors, (0), 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 47 [2022-01-18 06:10:59,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:59,775 INFO L225 Difference]: With dead ends: 10887 [2022-01-18 06:10:59,776 INFO L226 Difference]: Without dead ends: 10183 [2022-01-18 06:10:59,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=983, Invalid=5179, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 06:10:59,777 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 710 mSDsluCounter, 2064 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:59,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 1499 Invalid, 2292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1817 Invalid, 0 Unknown, 231 Unchecked, 0.9s Time] [2022-01-18 06:10:59,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10183 states. [2022-01-18 06:10:59,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10183 to 4903. [2022-01-18 06:10:59,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4903 states, 4902 states have (on average 2.5236638106895146) internal successors, (12371), 4902 states have internal predecessors, (12371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:59,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4903 states to 4903 states and 12371 transitions. [2022-01-18 06:10:59,882 INFO L78 Accepts]: Start accepts. Automaton has 4903 states and 12371 transitions. Word has length 47 [2022-01-18 06:10:59,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:59,882 INFO L470 AbstractCegarLoop]: Abstraction has 4903 states and 12371 transitions. [2022-01-18 06:10:59,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 30 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:59,882 INFO L276 IsEmpty]: Start isEmpty. Operand 4903 states and 12371 transitions. [2022-01-18 06:10:59,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-18 06:10:59,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:59,887 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:59,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-01-18 06:11:00,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-01-18 06:11:00,088 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:11:00,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:00,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1718807721, now seen corresponding path program 42 times [2022-01-18 06:11:00,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:00,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585726856] [2022-01-18 06:11:00,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:00,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:00,347 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:00,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:00,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585726856] [2022-01-18 06:11:00,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585726856] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:00,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130402632] [2022-01-18 06:11:00,347 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:11:00,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:00,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:00,351 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:11:00,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 06:11:00,380 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 06:11:00,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:00,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 44 conjunts are in the unsatisfiable core [2022-01-18 06:11:00,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:01,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:01,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:01,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:01,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:01,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:01,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:01,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:01,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:01,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:01,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:01,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:01,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:01,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:01,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:01,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:01,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,031 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 36 [2022-01-18 06:11:01,046 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:01,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:01,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,615 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,615 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,615 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,618 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:01,684 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:11:01,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 94 treesize of output 208 [2022-01-18 06:11:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:02,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130402632] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:02,169 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:02,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 32 [2022-01-18 06:11:02,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345013400] [2022-01-18 06:11:02,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:02,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 06:11:02,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:02,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 06:11:02,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 06:11:02,170 INFO L87 Difference]: Start difference. First operand 4903 states and 12371 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 32 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:04,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:04,980 INFO L93 Difference]: Finished difference Result 12235 states and 30658 transitions. [2022-01-18 06:11:04,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 06:11:04,980 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 32 states have internal predecessors, (102), 0 states have call successors, (0), 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 47 [2022-01-18 06:11:04,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:04,999 INFO L225 Difference]: With dead ends: 12235 [2022-01-18 06:11:04,999 INFO L226 Difference]: Without dead ends: 11623 [2022-01-18 06:11:05,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 76 SyntacticMatches, 4 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2360 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1435, Invalid=6575, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 06:11:05,000 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 569 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 402 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:05,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 1135 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1249 Invalid, 0 Unknown, 402 Unchecked, 0.8s Time] [2022-01-18 06:11:05,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11623 states. [2022-01-18 06:11:05,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11623 to 6631. [2022-01-18 06:11:05,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6631 states, 6630 states have (on average 2.5295625942684765) internal successors, (16771), 6630 states have internal predecessors, (16771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:05,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6631 states to 6631 states and 16771 transitions. [2022-01-18 06:11:05,135 INFO L78 Accepts]: Start accepts. Automaton has 6631 states and 16771 transitions. Word has length 47 [2022-01-18 06:11:05,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:05,135 INFO L470 AbstractCegarLoop]: Abstraction has 6631 states and 16771 transitions. [2022-01-18 06:11:05,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 32 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:05,135 INFO L276 IsEmpty]: Start isEmpty. Operand 6631 states and 16771 transitions. [2022-01-18 06:11:05,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-18 06:11:05,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:05,140 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:05,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-01-18 06:11:05,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-01-18 06:11:05,342 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:11:05,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:05,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1228093271, now seen corresponding path program 43 times [2022-01-18 06:11:05,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:05,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961808391] [2022-01-18 06:11:05,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:05,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:05,625 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:05,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:05,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961808391] [2022-01-18 06:11:05,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961808391] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:05,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857572806] [2022-01-18 06:11:05,626 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:11:05,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:05,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:05,627 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:11:05,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 06:11:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:05,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 06:11:05,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:06,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:06,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:06,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:06,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:06,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:06,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:06,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:06,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:06,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:06,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:06,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:06,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:06,270 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-01-18 06:11:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 9 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:06,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:06,955 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:11:06,956 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-01-18 06:11:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:07,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857572806] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:07,491 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:07,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 29 [2022-01-18 06:11:07,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406165583] [2022-01-18 06:11:07,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:07,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 06:11:07,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:07,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 06:11:07,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2022-01-18 06:11:07,492 INFO L87 Difference]: Start difference. First operand 6631 states and 16771 transitions. Second operand has 30 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 29 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:09,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:09,227 INFO L93 Difference]: Finished difference Result 11735 states and 29232 transitions. [2022-01-18 06:11:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 06:11:09,227 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 29 states have internal predecessors, (97), 0 states have call successors, (0), 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 47 [2022-01-18 06:11:09,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:09,244 INFO L225 Difference]: With dead ends: 11735 [2022-01-18 06:11:09,244 INFO L226 Difference]: Without dead ends: 11219 [2022-01-18 06:11:09,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=711, Invalid=3711, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 06:11:09,245 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 516 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 1960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:09,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 1317 Invalid, 1960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1657 Invalid, 0 Unknown, 148 Unchecked, 0.8s Time] [2022-01-18 06:11:09,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11219 states. [2022-01-18 06:11:09,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11219 to 7615. [2022-01-18 06:11:09,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7615 states, 7614 states have (on average 2.5199632256369844) internal successors, (19187), 7614 states have internal predecessors, (19187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7615 states to 7615 states and 19187 transitions. [2022-01-18 06:11:09,390 INFO L78 Accepts]: Start accepts. Automaton has 7615 states and 19187 transitions. Word has length 47 [2022-01-18 06:11:09,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:09,390 INFO L470 AbstractCegarLoop]: Abstraction has 7615 states and 19187 transitions. [2022-01-18 06:11:09,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 29 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:09,390 INFO L276 IsEmpty]: Start isEmpty. Operand 7615 states and 19187 transitions. [2022-01-18 06:11:09,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-18 06:11:09,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:09,396 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:09,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-01-18 06:11:09,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:09,614 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:11:09,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:09,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2074549929, now seen corresponding path program 44 times [2022-01-18 06:11:09,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:09,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83338560] [2022-01-18 06:11:09,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:09,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:09,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:09,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83338560] [2022-01-18 06:11:09,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83338560] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:09,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101863735] [2022-01-18 06:11:09,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:11:09,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:09,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:09,861 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:11:09,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 06:11:09,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:11:09,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:09,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 06:11:09,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:10,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:10,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:10,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:10,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:10,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:10,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:10,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:10,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:10,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:10,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:10,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:10,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:10,447 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:10,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:10,448 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-01-18 06:11:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:10,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:11,112 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:11:11,113 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-01-18 06:11:11,789 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:11,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101863735] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:11,790 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:11,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 29 [2022-01-18 06:11:11,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298278119] [2022-01-18 06:11:11,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:11,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 06:11:11,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:11,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 06:11:11,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2022-01-18 06:11:11,791 INFO L87 Difference]: Start difference. First operand 7615 states and 19187 transitions. Second operand has 30 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 29 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:13,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:13,348 INFO L93 Difference]: Finished difference Result 13183 states and 33005 transitions. [2022-01-18 06:11:13,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 06:11:13,348 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 29 states have internal predecessors, (97), 0 states have call successors, (0), 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 47 [2022-01-18 06:11:13,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:13,368 INFO L225 Difference]: With dead ends: 13183 [2022-01-18 06:11:13,368 INFO L226 Difference]: Without dead ends: 13023 [2022-01-18 06:11:13,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1105 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=665, Invalid=3625, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 06:11:13,369 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 446 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:13,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 991 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1338 Invalid, 0 Unknown, 202 Unchecked, 0.6s Time] [2022-01-18 06:11:13,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13023 states. [2022-01-18 06:11:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13023 to 7615. [2022-01-18 06:11:13,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7615 states, 7614 states have (on average 2.5231153138954556) internal successors, (19211), 7614 states have internal predecessors, (19211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:13,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7615 states to 7615 states and 19211 transitions. [2022-01-18 06:11:13,505 INFO L78 Accepts]: Start accepts. Automaton has 7615 states and 19211 transitions. Word has length 47 [2022-01-18 06:11:13,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:13,506 INFO L470 AbstractCegarLoop]: Abstraction has 7615 states and 19211 transitions. [2022-01-18 06:11:13,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 29 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand 7615 states and 19211 transitions. [2022-01-18 06:11:13,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-18 06:11:13,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:13,512 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:13,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-01-18 06:11:13,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:13,713 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:11:13,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash 150779223, now seen corresponding path program 45 times [2022-01-18 06:11:13,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:13,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931220084] [2022-01-18 06:11:13,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:13,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:13,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:13,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931220084] [2022-01-18 06:11:13,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931220084] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:13,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899696472] [2022-01-18 06:11:13,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:11:13,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:13,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:13,970 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:11:13,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 06:11:14,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 06:11:14,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:14,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 06:11:14,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:14,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:14,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:14,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:14,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:14,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:14,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:14,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:14,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:14,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:14,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:14,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:14,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:14,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:14,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:14,588 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-01-18 06:11:14,603 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:14,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:15,308 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:11:15,308 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-01-18 06:11:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:15,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899696472] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:15,938 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:15,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 30 [2022-01-18 06:11:15,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820946858] [2022-01-18 06:11:15,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:15,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:11:15,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:11:15,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:11:15,939 INFO L87 Difference]: Start difference. First operand 7615 states and 19211 transitions. Second operand has 31 states, 31 states have (on average 3.129032258064516) internal successors, (97), 30 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:17,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:17,248 INFO L93 Difference]: Finished difference Result 13047 states and 32810 transitions. [2022-01-18 06:11:17,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 06:11:17,248 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.129032258064516) internal successors, (97), 30 states have internal predecessors, (97), 0 states have call successors, (0), 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 47 [2022-01-18 06:11:17,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:17,268 INFO L225 Difference]: With dead ends: 13047 [2022-01-18 06:11:17,268 INFO L226 Difference]: Without dead ends: 12911 [2022-01-18 06:11:17,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=672, Invalid=3618, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 06:11:17,269 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 436 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 352 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:17,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 774 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 969 Invalid, 0 Unknown, 352 Unchecked, 0.5s Time] [2022-01-18 06:11:17,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12911 states. [2022-01-18 06:11:17,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12911 to 8047. [2022-01-18 06:11:17,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8047 states, 8046 states have (on average 2.5218742232165052) internal successors, (20291), 8046 states have internal predecessors, (20291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:17,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8047 states to 8047 states and 20291 transitions. [2022-01-18 06:11:17,404 INFO L78 Accepts]: Start accepts. Automaton has 8047 states and 20291 transitions. Word has length 47 [2022-01-18 06:11:17,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:17,404 INFO L470 AbstractCegarLoop]: Abstraction has 8047 states and 20291 transitions. [2022-01-18 06:11:17,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.129032258064516) internal successors, (97), 30 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:17,405 INFO L276 IsEmpty]: Start isEmpty. Operand 8047 states and 20291 transitions. [2022-01-18 06:11:17,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-18 06:11:17,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:17,412 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:17,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-01-18 06:11:17,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:17,627 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:11:17,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:17,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2008735575, now seen corresponding path program 46 times [2022-01-18 06:11:17,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:17,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576166810] [2022-01-18 06:11:17,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:17,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:17,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:17,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576166810] [2022-01-18 06:11:17,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576166810] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:17,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427928005] [2022-01-18 06:11:17,870 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:11:17,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:17,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:17,871 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:11:17,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 06:11:17,896 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:11:17,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:17,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 06:11:17,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:18,411 INFO L353 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-01-18 06:11:18,412 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 88 treesize of output 34 [2022-01-18 06:11:18,426 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:18,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:19,063 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:11:19,063 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-01-18 06:11:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 17 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:19,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427928005] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:19,580 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:19,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2022-01-18 06:11:19,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222731923] [2022-01-18 06:11:19,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:19,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 06:11:19,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:19,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 06:11:19,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2022-01-18 06:11:19,581 INFO L87 Difference]: Start difference. First operand 8047 states and 20291 transitions. Second operand has 30 states, 30 states have (on average 3.1) internal successors, (93), 29 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:20,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:20,920 INFO L93 Difference]: Finished difference Result 12539 states and 31459 transitions. [2022-01-18 06:11:20,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 06:11:20,920 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1) internal successors, (93), 29 states have internal predecessors, (93), 0 states have call successors, (0), 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 47 [2022-01-18 06:11:20,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:20,940 INFO L225 Difference]: With dead ends: 12539 [2022-01-18 06:11:20,940 INFO L226 Difference]: Without dead ends: 12479 [2022-01-18 06:11:20,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=613, Invalid=3293, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 06:11:20,941 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 356 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:20,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 625 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 06:11:20,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12479 states. [2022-01-18 06:11:21,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12479 to 7935. [2022-01-18 06:11:21,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7935 states, 7934 states have (on average 2.5221830098311067) internal successors, (20011), 7934 states have internal predecessors, (20011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:21,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7935 states to 7935 states and 20011 transitions. [2022-01-18 06:11:21,099 INFO L78 Accepts]: Start accepts. Automaton has 7935 states and 20011 transitions. Word has length 47 [2022-01-18 06:11:21,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:21,099 INFO L470 AbstractCegarLoop]: Abstraction has 7935 states and 20011 transitions. [2022-01-18 06:11:21,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.1) internal successors, (93), 29 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:21,099 INFO L276 IsEmpty]: Start isEmpty. Operand 7935 states and 20011 transitions. [2022-01-18 06:11:21,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-18 06:11:21,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:21,105 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:21,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-01-18 06:11:21,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-01-18 06:11:21,305 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:11:21,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:21,307 INFO L85 PathProgramCache]: Analyzing trace with hash 229809461, now seen corresponding path program 47 times [2022-01-18 06:11:21,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:21,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129383449] [2022-01-18 06:11:21,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:21,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:21,575 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:21,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:21,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129383449] [2022-01-18 06:11:21,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129383449] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:21,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872121657] [2022-01-18 06:11:21,575 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:11:21,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:21,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:21,576 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:11:21,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 06:11:21,603 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 06:11:21,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:21,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 06:11:21,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:22,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:22,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,207 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-01-18 06:11:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 5 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:22,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:22,890 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:11:22,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-01-18 06:11:23,949 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:23,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872121657] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:23,949 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:23,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 30 [2022-01-18 06:11:23,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540040566] [2022-01-18 06:11:23,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:23,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:11:23,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:23,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:11:23,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:11:23,951 INFO L87 Difference]: Start difference. First operand 7935 states and 20011 transitions. Second operand has 31 states, 31 states have (on average 3.161290322580645) internal successors, (98), 30 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:25,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:25,410 INFO L93 Difference]: Finished difference Result 11875 states and 29772 transitions. [2022-01-18 06:11:25,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 06:11:25,411 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.161290322580645) internal successors, (98), 30 states have internal predecessors, (98), 0 states have call successors, (0), 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 47 [2022-01-18 06:11:25,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:25,431 INFO L225 Difference]: With dead ends: 11875 [2022-01-18 06:11:25,431 INFO L226 Difference]: Without dead ends: 11799 [2022-01-18 06:11:25,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 75 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1102 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=668, Invalid=3888, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 06:11:25,432 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 440 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 518 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:25,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 795 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 925 Invalid, 0 Unknown, 518 Unchecked, 0.5s Time] [2022-01-18 06:11:25,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11799 states. [2022-01-18 06:11:25,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11799 to 7919. [2022-01-18 06:11:25,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7919 states, 7918 states have (on average 2.5222278353119476) internal successors, (19971), 7918 states have internal predecessors, (19971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:25,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7919 states to 7919 states and 19971 transitions. [2022-01-18 06:11:25,587 INFO L78 Accepts]: Start accepts. Automaton has 7919 states and 19971 transitions. Word has length 47 [2022-01-18 06:11:25,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:25,587 INFO L470 AbstractCegarLoop]: Abstraction has 7919 states and 19971 transitions. [2022-01-18 06:11:25,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.161290322580645) internal successors, (98), 30 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:25,587 INFO L276 IsEmpty]: Start isEmpty. Operand 7919 states and 19971 transitions. [2022-01-18 06:11:25,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-18 06:11:25,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:25,595 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:25,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-01-18 06:11:25,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-01-18 06:11:25,796 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:11:25,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:25,796 INFO L85 PathProgramCache]: Analyzing trace with hash -264425383, now seen corresponding path program 48 times [2022-01-18 06:11:25,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:25,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274323808] [2022-01-18 06:11:25,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:25,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:25,845 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 36 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:25,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:25,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274323808] [2022-01-18 06:11:25,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274323808] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:25,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185951732] [2022-01-18 06:11:25,845 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:11:25,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:25,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:25,846 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:11:25,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 06:11:25,873 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-01-18 06:11:25,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:25,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 06:11:25,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:25,946 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 36 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:11:25,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 36 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:11:26,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185951732] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:26,023 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:26,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2022-01-18 06:11:26,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348837382] [2022-01-18 06:11:26,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:26,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 06:11:26,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:26,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 06:11:26,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-18 06:11:26,024 INFO L87 Difference]: Start difference. First operand 7919 states and 19971 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:26,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:26,109 INFO L93 Difference]: Finished difference Result 11467 states and 28945 transitions. [2022-01-18 06:11:26,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 06:11:26,110 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 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 49 [2022-01-18 06:11:26,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:26,128 INFO L225 Difference]: With dead ends: 11467 [2022-01-18 06:11:26,128 INFO L226 Difference]: Without dead ends: 11459 [2022-01-18 06:11:26,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-18 06:11:26,129 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 132 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:26,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 114 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:11:26,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11459 states. [2022-01-18 06:11:26,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11459 to 10275. [2022-01-18 06:11:26,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10275 states, 10274 states have (on average 2.5367919018882614) internal successors, (26063), 10274 states have internal predecessors, (26063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:26,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10275 states to 10275 states and 26063 transitions. [2022-01-18 06:11:26,294 INFO L78 Accepts]: Start accepts. Automaton has 10275 states and 26063 transitions. Word has length 49 [2022-01-18 06:11:26,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:26,294 INFO L470 AbstractCegarLoop]: Abstraction has 10275 states and 26063 transitions. [2022-01-18 06:11:26,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:26,294 INFO L276 IsEmpty]: Start isEmpty. Operand 10275 states and 26063 transitions. [2022-01-18 06:11:26,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-18 06:11:26,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:26,304 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:26,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-01-18 06:11:26,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:26,505 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:11:26,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:26,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1879878611, now seen corresponding path program 49 times [2022-01-18 06:11:26,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:26,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996272696] [2022-01-18 06:11:26,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:26,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:26,761 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:11:26,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:26,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996272696] [2022-01-18 06:11:26,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996272696] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:26,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096222886] [2022-01-18 06:11:26,762 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:11:26,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:26,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:26,764 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:11:26,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 06:11:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:26,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 06:11:26,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:27,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:27,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:27,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:27,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:27,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:27,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:27,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:27,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:27,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:27,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:27,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:27,571 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2022-01-18 06:11:27,585 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:11:27,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:28,259 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:11:28,259 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 94 treesize of output 280 [2022-01-18 06:11:29,114 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 68 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:11:29,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096222886] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:29,114 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:29,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 30 [2022-01-18 06:11:29,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631437125] [2022-01-18 06:11:29,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:29,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:11:29,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:29,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:11:29,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:11:29,116 INFO L87 Difference]: Start difference. First operand 10275 states and 26063 transitions. Second operand has 31 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 30 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:31,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:31,152 INFO L93 Difference]: Finished difference Result 18003 states and 45680 transitions. [2022-01-18 06:11:31,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 06:11:31,153 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 30 states have internal predecessors, (106), 0 states have call successors, (0), 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 51 [2022-01-18 06:11:31,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:31,191 INFO L225 Difference]: With dead ends: 18003 [2022-01-18 06:11:31,192 INFO L226 Difference]: Without dead ends: 17871 [2022-01-18 06:11:31,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 85 SyntacticMatches, 5 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1990 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1118, Invalid=5854, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 06:11:31,192 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 448 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 581 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:31,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 1004 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1122 Invalid, 0 Unknown, 581 Unchecked, 0.6s Time] [2022-01-18 06:11:31,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17871 states. [2022-01-18 06:11:31,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17871 to 10323. [2022-01-18 06:11:31,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10323 states, 10322 states have (on average 2.5373958535167604) internal successors, (26191), 10322 states have internal predecessors, (26191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:31,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10323 states to 10323 states and 26191 transitions. [2022-01-18 06:11:31,419 INFO L78 Accepts]: Start accepts. Automaton has 10323 states and 26191 transitions. Word has length 51 [2022-01-18 06:11:31,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:31,419 INFO L470 AbstractCegarLoop]: Abstraction has 10323 states and 26191 transitions. [2022-01-18 06:11:31,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 30 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:31,419 INFO L276 IsEmpty]: Start isEmpty. Operand 10323 states and 26191 transitions. [2022-01-18 06:11:31,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:11:31,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:31,430 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:31,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-01-18 06:11:31,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-01-18 06:11:31,631 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:11:31,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:31,631 INFO L85 PathProgramCache]: Analyzing trace with hash 512651733, now seen corresponding path program 50 times [2022-01-18 06:11:31,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:31,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368201572] [2022-01-18 06:11:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:31,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:31,900 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:31,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:31,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368201572] [2022-01-18 06:11:31,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368201572] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:31,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728562518] [2022-01-18 06:11:31,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:11:31,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:31,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:31,903 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:11:31,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 06:11:31,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:11:31,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:31,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-18 06:11:31,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:32,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:32,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:32,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:32,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:32,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:32,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:32,821 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 39 [2022-01-18 06:11:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:32,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:33,924 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:11:33,924 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:11:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 11 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:34,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728562518] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:34,924 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:34,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 38 [2022-01-18 06:11:34,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215827193] [2022-01-18 06:11:34,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:34,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 06:11:34,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:34,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 06:11:34,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1253, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 06:11:34,925 INFO L87 Difference]: Start difference. First operand 10323 states and 26191 transitions. Second operand has 39 states, 39 states have (on average 3.2564102564102564) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:37,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:37,134 INFO L93 Difference]: Finished difference Result 23021 states and 58673 transitions. [2022-01-18 06:11:37,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 06:11:37,134 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.2564102564102564) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 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 53 [2022-01-18 06:11:37,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:37,232 INFO L225 Difference]: With dead ends: 23021 [2022-01-18 06:11:37,232 INFO L226 Difference]: Without dead ends: 22705 [2022-01-18 06:11:37,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2224 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1120, Invalid=6362, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 06:11:37,233 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 565 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 593 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:37,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 1080 Invalid, 2180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1455 Invalid, 0 Unknown, 593 Unchecked, 0.8s Time] [2022-01-18 06:11:37,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22705 states. [2022-01-18 06:11:37,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22705 to 8523. [2022-01-18 06:11:37,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8523 states, 8522 states have (on average 2.5274583431119457) internal successors, (21539), 8522 states have internal predecessors, (21539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:37,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8523 states to 8523 states and 21539 transitions. [2022-01-18 06:11:37,496 INFO L78 Accepts]: Start accepts. Automaton has 8523 states and 21539 transitions. Word has length 53 [2022-01-18 06:11:37,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:37,497 INFO L470 AbstractCegarLoop]: Abstraction has 8523 states and 21539 transitions. [2022-01-18 06:11:37,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.2564102564102564) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:37,497 INFO L276 IsEmpty]: Start isEmpty. Operand 8523 states and 21539 transitions. [2022-01-18 06:11:37,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:11:37,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:37,507 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:37,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-01-18 06:11:37,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-01-18 06:11:37,707 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:11:37,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:37,709 INFO L85 PathProgramCache]: Analyzing trace with hash 693965781, now seen corresponding path program 51 times [2022-01-18 06:11:37,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:37,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125697754] [2022-01-18 06:11:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:37,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:38,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:38,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125697754] [2022-01-18 06:11:38,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125697754] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:38,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904043395] [2022-01-18 06:11:38,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:11:38,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:38,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:38,022 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:11:38,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 06:11:38,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 06:11:38,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:38,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-18 06:11:38,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:38,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:38,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:38,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:38,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:38,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:38,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:38,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-01-18 06:11:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:38,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:40,006 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:11:40,007 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:11:41,330 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 11 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:41,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904043395] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:41,330 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:41,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2022-01-18 06:11:41,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077095138] [2022-01-18 06:11:41,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:41,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 06:11:41,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:41,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 06:11:41,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1322, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 06:11:41,331 INFO L87 Difference]: Start difference. First operand 8523 states and 21539 transitions. Second operand has 40 states, 40 states have (on average 3.175) internal successors, (127), 39 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:43,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:43,552 INFO L93 Difference]: Finished difference Result 17813 states and 45317 transitions. [2022-01-18 06:11:43,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 06:11:43,552 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.175) internal successors, (127), 39 states have internal predecessors, (127), 0 states have call successors, (0), 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 53 [2022-01-18 06:11:43,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:43,586 INFO L225 Difference]: With dead ends: 17813 [2022-01-18 06:11:43,587 INFO L226 Difference]: Without dead ends: 17437 [2022-01-18 06:11:43,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2264 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1129, Invalid=6527, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 06:11:43,588 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 589 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 2269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 712 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:43,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 1143 Invalid, 2269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1422 Invalid, 0 Unknown, 712 Unchecked, 0.8s Time] [2022-01-18 06:11:43,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17437 states. [2022-01-18 06:11:43,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17437 to 6359. [2022-01-18 06:11:43,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6359 states, 6358 states have (on average 2.518244731047499) internal successors, (16011), 6358 states have internal predecessors, (16011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:43,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6359 states to 6359 states and 16011 transitions. [2022-01-18 06:11:43,775 INFO L78 Accepts]: Start accepts. Automaton has 6359 states and 16011 transitions. Word has length 53 [2022-01-18 06:11:43,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:43,775 INFO L470 AbstractCegarLoop]: Abstraction has 6359 states and 16011 transitions. [2022-01-18 06:11:43,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.175) internal successors, (127), 39 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:43,775 INFO L276 IsEmpty]: Start isEmpty. Operand 6359 states and 16011 transitions. [2022-01-18 06:11:43,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:11:43,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:43,782 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:43,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-01-18 06:11:43,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:43,983 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:11:43,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:43,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1270786091, now seen corresponding path program 52 times [2022-01-18 06:11:43,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:43,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854233347] [2022-01-18 06:11:43,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:43,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 86 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:11:44,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:44,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854233347] [2022-01-18 06:11:44,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854233347] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:44,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528817488] [2022-01-18 06:11:44,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:11:44,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:44,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:44,279 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:11:44,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 06:11:44,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:11:44,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:44,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-18 06:11:44,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:45,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:45,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:45,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:45,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:45,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:45,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:45,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-01-18 06:11:45,227 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 11 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:45,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:46,245 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:11:46,246 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:11:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 14 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:47,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528817488] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:47,831 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:47,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 37 [2022-01-18 06:11:47,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042350617] [2022-01-18 06:11:47,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:47,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 06:11:47,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:47,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 06:11:47,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1154, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 06:11:47,833 INFO L87 Difference]: Start difference. First operand 6359 states and 16011 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 37 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:49,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:49,911 INFO L93 Difference]: Finished difference Result 12255 states and 30568 transitions. [2022-01-18 06:11:49,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 06:11:49,912 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 37 states have internal predecessors, (127), 0 states have call successors, (0), 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 53 [2022-01-18 06:11:49,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:49,932 INFO L225 Difference]: With dead ends: 12255 [2022-01-18 06:11:49,932 INFO L226 Difference]: Without dead ends: 11755 [2022-01-18 06:11:49,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1566 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=826, Invalid=4576, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 06:11:49,933 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 505 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:49,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [505 Valid, 1296 Invalid, 1977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1645 Invalid, 0 Unknown, 152 Unchecked, 0.9s Time] [2022-01-18 06:11:49,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11755 states. [2022-01-18 06:11:50,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11755 to 7943. [2022-01-18 06:11:50,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7943 states, 7942 states have (on average 2.5186351045076805) internal successors, (20003), 7942 states have internal predecessors, (20003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:50,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7943 states to 7943 states and 20003 transitions. [2022-01-18 06:11:50,083 INFO L78 Accepts]: Start accepts. Automaton has 7943 states and 20003 transitions. Word has length 53 [2022-01-18 06:11:50,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:50,084 INFO L470 AbstractCegarLoop]: Abstraction has 7943 states and 20003 transitions. [2022-01-18 06:11:50,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 37 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:50,084 INFO L276 IsEmpty]: Start isEmpty. Operand 7943 states and 20003 transitions. [2022-01-18 06:11:50,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:11:50,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:50,095 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:50,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-01-18 06:11:50,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:50,296 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:11:50,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:50,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1517517269, now seen corresponding path program 53 times [2022-01-18 06:11:50,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:50,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819252601] [2022-01-18 06:11:50,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:50,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:50,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:50,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819252601] [2022-01-18 06:11:50,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819252601] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:50,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876986345] [2022-01-18 06:11:50,589 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:11:50,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:50,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:50,591 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:11:50,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 06:11:50,621 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 06:11:50,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:50,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-18 06:11:50,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:51,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:51,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:51,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:51,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:51,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:51,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:51,484 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 37 [2022-01-18 06:11:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:51,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:52,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:52,267 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:11:52,267 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 112 treesize of output 284 [2022-01-18 06:11:53,200 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 14 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:53,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876986345] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:53,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:53,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 38 [2022-01-18 06:11:53,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521316851] [2022-01-18 06:11:53,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:53,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 06:11:53,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:53,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 06:11:53,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1236, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 06:11:53,201 INFO L87 Difference]: Start difference. First operand 7943 states and 20003 transitions. Second operand has 39 states, 39 states have (on average 3.282051282051282) internal successors, (128), 38 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:55,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:55,160 INFO L93 Difference]: Finished difference Result 13859 states and 34789 transitions. [2022-01-18 06:11:55,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 06:11:55,161 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.282051282051282) internal successors, (128), 38 states have internal predecessors, (128), 0 states have call successors, (0), 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 53 [2022-01-18 06:11:55,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:55,185 INFO L225 Difference]: With dead ends: 13859 [2022-01-18 06:11:55,185 INFO L226 Difference]: Without dead ends: 13699 [2022-01-18 06:11:55,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1619 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=815, Invalid=4885, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 06:11:55,186 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 432 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 1885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:55,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 1178 Invalid, 1885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1535 Invalid, 0 Unknown, 247 Unchecked, 0.8s Time] [2022-01-18 06:11:55,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13699 states. [2022-01-18 06:11:55,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13699 to 7735. [2022-01-18 06:11:55,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7735 states, 7734 states have (on average 2.5201706749418156) internal successors, (19491), 7734 states have internal predecessors, (19491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:55,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7735 states to 7735 states and 19491 transitions. [2022-01-18 06:11:55,413 INFO L78 Accepts]: Start accepts. Automaton has 7735 states and 19491 transitions. Word has length 53 [2022-01-18 06:11:55,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:55,414 INFO L470 AbstractCegarLoop]: Abstraction has 7735 states and 19491 transitions. [2022-01-18 06:11:55,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.282051282051282) internal successors, (128), 38 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:55,414 INFO L276 IsEmpty]: Start isEmpty. Operand 7735 states and 19491 transitions. [2022-01-18 06:11:55,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:11:55,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:55,422 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:55,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-01-18 06:11:55,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-01-18 06:11:55,633 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:11:55,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:55,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1492532693, now seen corresponding path program 54 times [2022-01-18 06:11:55,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:55,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134608044] [2022-01-18 06:11:55,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:55,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:55,953 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:55,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:55,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134608044] [2022-01-18 06:11:55,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134608044] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:55,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342308803] [2022-01-18 06:11:55,954 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:11:55,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:55,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:55,955 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:11:55,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 06:11:55,985 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 06:11:55,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:55,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-18 06:11:55,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:56,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:56,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:56,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:56,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:56,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:56,886 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 39 [2022-01-18 06:11:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:56,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:57,977 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:11:57,978 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:11:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 14 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:59,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342308803] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:59,332 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:59,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2022-01-18 06:11:59,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191581117] [2022-01-18 06:11:59,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:59,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 06:11:59,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:59,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 06:11:59,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1319, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 06:11:59,333 INFO L87 Difference]: Start difference. First operand 7735 states and 19491 transitions. Second operand has 40 states, 40 states have (on average 3.175) internal successors, (127), 39 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:01,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:12:01,655 INFO L93 Difference]: Finished difference Result 14143 states and 35746 transitions. [2022-01-18 06:12:01,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 06:12:01,656 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.175) internal successors, (127), 39 states have internal predecessors, (127), 0 states have call successors, (0), 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 53 [2022-01-18 06:12:01,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:12:01,679 INFO L225 Difference]: With dead ends: 14143 [2022-01-18 06:12:01,679 INFO L226 Difference]: Without dead ends: 14079 [2022-01-18 06:12:01,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2290 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1071, Invalid=6939, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 06:12:01,680 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 385 mSDsluCounter, 1697 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 370 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:12:01,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 1209 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1565 Invalid, 0 Unknown, 370 Unchecked, 0.8s Time] [2022-01-18 06:12:01,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14079 states. [2022-01-18 06:12:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14079 to 9859. [2022-01-18 06:12:01,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9859 states, 9858 states have (on average 2.5310407790626903) internal successors, (24951), 9858 states have internal predecessors, (24951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:01,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9859 states to 9859 states and 24951 transitions. [2022-01-18 06:12:01,888 INFO L78 Accepts]: Start accepts. Automaton has 9859 states and 24951 transitions. Word has length 53 [2022-01-18 06:12:01,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:12:01,889 INFO L470 AbstractCegarLoop]: Abstraction has 9859 states and 24951 transitions. [2022-01-18 06:12:01,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.175) internal successors, (127), 39 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:01,889 INFO L276 IsEmpty]: Start isEmpty. Operand 9859 states and 24951 transitions. [2022-01-18 06:12:01,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:12:01,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:12:01,899 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:12:01,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-01-18 06:12:02,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:02,123 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:12:02,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:12:02,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1517887531, now seen corresponding path program 55 times [2022-01-18 06:12:02,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:12:02,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017513295] [2022-01-18 06:12:02,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:12:02,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:12:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:02,453 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:02,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:12:02,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017513295] [2022-01-18 06:12:02,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017513295] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:12:02,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388172846] [2022-01-18 06:12:02,454 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:12:02,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:02,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:12:02,456 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:12:02,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 06:12:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:02,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-18 06:12:02,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:03,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:03,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:03,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:03,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:03,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:03,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:03,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 39 [2022-01-18 06:12:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:03,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:04,472 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:12:04,472 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:12:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 24 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:05,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388172846] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:05,508 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:05,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2022-01-18 06:12:05,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102094149] [2022-01-18 06:12:05,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:05,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 06:12:05,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:05,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 06:12:05,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1317, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 06:12:05,509 INFO L87 Difference]: Start difference. First operand 9859 states and 24951 transitions. Second operand has 40 states, 40 states have (on average 3.175) internal successors, (127), 39 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:07,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:12:07,499 INFO L93 Difference]: Finished difference Result 16197 states and 40669 transitions. [2022-01-18 06:12:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 06:12:07,502 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.175) internal successors, (127), 39 states have internal predecessors, (127), 0 states have call successors, (0), 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 53 [2022-01-18 06:12:07,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:12:07,528 INFO L225 Difference]: With dead ends: 16197 [2022-01-18 06:12:07,528 INFO L226 Difference]: Without dead ends: 16133 [2022-01-18 06:12:07,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1867 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=916, Invalid=5890, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 06:12:07,529 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 453 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 1589 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 2139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 464 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:12:07,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 1162 Invalid, 2139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1589 Invalid, 0 Unknown, 464 Unchecked, 0.8s Time] [2022-01-18 06:12:07,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16133 states. [2022-01-18 06:12:07,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16133 to 9891. [2022-01-18 06:12:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9891 states, 9890 states have (on average 2.530333670374115) internal successors, (25025), 9890 states have internal predecessors, (25025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9891 states to 9891 states and 25025 transitions. [2022-01-18 06:12:07,708 INFO L78 Accepts]: Start accepts. Automaton has 9891 states and 25025 transitions. Word has length 53 [2022-01-18 06:12:07,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:12:07,708 INFO L470 AbstractCegarLoop]: Abstraction has 9891 states and 25025 transitions. [2022-01-18 06:12:07,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.175) internal successors, (127), 39 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:07,708 INFO L276 IsEmpty]: Start isEmpty. Operand 9891 states and 25025 transitions. [2022-01-18 06:12:07,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:12:07,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:12:07,717 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:12:07,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-01-18 06:12:07,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-01-18 06:12:07,917 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:12:07,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:12:07,918 INFO L85 PathProgramCache]: Analyzing trace with hash -827491883, now seen corresponding path program 56 times [2022-01-18 06:12:07,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:12:07,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141264915] [2022-01-18 06:12:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:12:07,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:12:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:08,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:12:08,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141264915] [2022-01-18 06:12:08,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141264915] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:12:08,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931469420] [2022-01-18 06:12:08,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:12:08,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:08,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:12:08,186 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:12:08,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-18 06:12:08,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:12:08,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:12:08,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-18 06:12:08,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:09,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,051 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:09,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:09,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:09,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,061 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:09,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-01-18 06:12:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:09,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:10,053 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:12:10,053 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:12:10,896 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 10 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:10,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931469420] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:10,896 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:10,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 36 [2022-01-18 06:12:10,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364616141] [2022-01-18 06:12:10,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:10,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 06:12:10,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:10,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 06:12:10,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1096, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 06:12:10,897 INFO L87 Difference]: Start difference. First operand 9891 states and 25025 transitions. Second operand has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 36 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:13,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:12:13,714 INFO L93 Difference]: Finished difference Result 17587 states and 44149 transitions. [2022-01-18 06:12:13,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 06:12:13,715 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 36 states have internal predecessors, (123), 0 states have call successors, (0), 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 53 [2022-01-18 06:12:13,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:12:13,740 INFO L225 Difference]: With dead ends: 17587 [2022-01-18 06:12:13,741 INFO L226 Difference]: Without dead ends: 16883 [2022-01-18 06:12:13,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 81 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1030, Invalid=6280, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 06:12:13,741 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 739 mSDsluCounter, 2539 mSDsCounter, 0 mSdLazyCounter, 2560 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 3045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:12:13,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 1883 Invalid, 3045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2560 Invalid, 0 Unknown, 247 Unchecked, 1.3s Time] [2022-01-18 06:12:13,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16883 states. [2022-01-18 06:12:13,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16883 to 11059. [2022-01-18 06:12:13,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11059 states, 11058 states have (on average 2.5293000542593598) internal successors, (27969), 11058 states have internal predecessors, (27969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:13,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11059 states to 11059 states and 27969 transitions. [2022-01-18 06:12:13,927 INFO L78 Accepts]: Start accepts. Automaton has 11059 states and 27969 transitions. Word has length 53 [2022-01-18 06:12:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:12:13,927 INFO L470 AbstractCegarLoop]: Abstraction has 11059 states and 27969 transitions. [2022-01-18 06:12:13,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 36 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:13,927 INFO L276 IsEmpty]: Start isEmpty. Operand 11059 states and 27969 transitions. [2022-01-18 06:12:13,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:12:13,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:12:13,936 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:12:13,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-01-18 06:12:14,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-01-18 06:12:14,137 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:12:14,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:12:14,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1935826901, now seen corresponding path program 57 times [2022-01-18 06:12:14,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:12:14,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975741037] [2022-01-18 06:12:14,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:12:14,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:12:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:14,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:12:14,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975741037] [2022-01-18 06:12:14,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975741037] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:12:14,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593884989] [2022-01-18 06:12:14,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:12:14,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:14,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:12:14,432 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:12:14,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-18 06:12:14,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 06:12:14,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:12:14,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-18 06:12:14,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:15,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:15,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:15,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:15,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:15,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,301 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-01-18 06:12:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:15,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:16,295 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:12:16,295 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:12:17,272 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 10 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:17,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593884989] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:17,272 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:17,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 38 [2022-01-18 06:12:17,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976518820] [2022-01-18 06:12:17,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:17,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 06:12:17,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:17,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 06:12:17,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1249, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 06:12:17,273 INFO L87 Difference]: Start difference. First operand 11059 states and 27969 transitions. Second operand has 39 states, 39 states have (on average 3.1538461538461537) internal successors, (123), 38 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:19,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:12:19,764 INFO L93 Difference]: Finished difference Result 23171 states and 58521 transitions. [2022-01-18 06:12:19,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 06:12:19,764 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.1538461538461537) internal successors, (123), 38 states have internal predecessors, (123), 0 states have call successors, (0), 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 53 [2022-01-18 06:12:19,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:12:19,802 INFO L225 Difference]: With dead ends: 23171 [2022-01-18 06:12:19,803 INFO L226 Difference]: Without dead ends: 22711 [2022-01-18 06:12:19,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2369 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1237, Invalid=7135, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 06:12:19,804 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 575 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 906 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:12:19,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 1362 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1514 Invalid, 0 Unknown, 906 Unchecked, 0.8s Time] [2022-01-18 06:12:19,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22711 states. [2022-01-18 06:12:20,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22711 to 11195. [2022-01-18 06:12:20,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11195 states, 11194 states have (on average 2.5207253886010363) internal successors, (28217), 11194 states have internal predecessors, (28217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:20,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11195 states to 11195 states and 28217 transitions. [2022-01-18 06:12:20,081 INFO L78 Accepts]: Start accepts. Automaton has 11195 states and 28217 transitions. Word has length 53 [2022-01-18 06:12:20,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:12:20,081 INFO L470 AbstractCegarLoop]: Abstraction has 11195 states and 28217 transitions. [2022-01-18 06:12:20,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.1538461538461537) internal successors, (123), 38 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:20,082 INFO L276 IsEmpty]: Start isEmpty. Operand 11195 states and 28217 transitions. [2022-01-18 06:12:20,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:12:20,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:12:20,091 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:12:20,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-01-18 06:12:20,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:20,292 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:12:20,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:12:20,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1074593323, now seen corresponding path program 58 times [2022-01-18 06:12:20,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:12:20,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997190374] [2022-01-18 06:12:20,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:12:20,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:12:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:20,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:12:20,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997190374] [2022-01-18 06:12:20,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997190374] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:12:20,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228333642] [2022-01-18 06:12:20,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:12:20,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:20,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:12:20,592 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:12:20,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-18 06:12:20,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:12:20,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:12:20,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-18 06:12:20,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:21,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:21,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:21,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:21,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:21,471 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-01-18 06:12:21,485 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:21,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:22,476 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:12:22,476 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:12:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:23,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228333642] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:23,643 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:23,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 38 [2022-01-18 06:12:23,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281549359] [2022-01-18 06:12:23,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:23,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 06:12:23,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:23,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 06:12:23,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1248, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 06:12:23,644 INFO L87 Difference]: Start difference. First operand 11195 states and 28217 transitions. Second operand has 39 states, 39 states have (on average 3.1538461538461537) internal successors, (123), 38 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:28,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:12:28,805 INFO L93 Difference]: Finished difference Result 23571 states and 58843 transitions. [2022-01-18 06:12:28,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-18 06:12:28,805 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.1538461538461537) internal successors, (123), 38 states have internal predecessors, (123), 0 states have call successors, (0), 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 53 [2022-01-18 06:12:28,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:12:28,836 INFO L225 Difference]: With dead ends: 23571 [2022-01-18 06:12:28,836 INFO L226 Difference]: Without dead ends: 23543 [2022-01-18 06:12:28,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 87 SyntacticMatches, 3 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6073 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2474, Invalid=17266, Unknown=0, NotChecked=0, Total=19740 [2022-01-18 06:12:28,837 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 393 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 3476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 827 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:12:28,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 1420 Invalid, 3476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2581 Invalid, 0 Unknown, 827 Unchecked, 1.4s Time] [2022-01-18 06:12:28,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23543 states. [2022-01-18 06:12:29,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23543 to 12431. [2022-01-18 06:12:29,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12431 states, 12430 states have (on average 2.5130329847144006) internal successors, (31237), 12430 states have internal predecessors, (31237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:29,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12431 states to 12431 states and 31237 transitions. [2022-01-18 06:12:29,060 INFO L78 Accepts]: Start accepts. Automaton has 12431 states and 31237 transitions. Word has length 53 [2022-01-18 06:12:29,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:12:29,061 INFO L470 AbstractCegarLoop]: Abstraction has 12431 states and 31237 transitions. [2022-01-18 06:12:29,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.1538461538461537) internal successors, (123), 38 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:29,061 INFO L276 IsEmpty]: Start isEmpty. Operand 12431 states and 31237 transitions. [2022-01-18 06:12:29,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:12:29,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:12:29,070 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:12:29,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-01-18 06:12:29,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:29,270 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:12:29,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:12:29,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1986024491, now seen corresponding path program 59 times [2022-01-18 06:12:29,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:12:29,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109503610] [2022-01-18 06:12:29,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:12:29,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:12:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:29,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:12:29,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109503610] [2022-01-18 06:12:29,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109503610] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:12:29,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392519797] [2022-01-18 06:12:29,557 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:12:29,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:29,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:12:29,560 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:12:29,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-18 06:12:29,587 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 06:12:29,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:12:29,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-18 06:12:29,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:30,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:30,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:30,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:30,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:30,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:30,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:30,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:30,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 15 disjoint index pairs (out of 66 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 31 [2022-01-18 06:12:30,387 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:30,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:31,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,358 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,359 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,359 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,359 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,365 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,365 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,366 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:31,445 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:12:31,445 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 112 treesize of output 284 [2022-01-18 06:12:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:31,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392519797] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:31,850 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:31,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 42 [2022-01-18 06:12:31,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590211615] [2022-01-18 06:12:31,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:31,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 06:12:31,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:31,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 06:12:31,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=1458, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 06:12:31,851 INFO L87 Difference]: Start difference. First operand 12431 states and 31237 transitions. Second operand has 43 states, 43 states have (on average 3.2325581395348837) internal successors, (139), 42 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:39,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:12:39,245 INFO L93 Difference]: Finished difference Result 28163 states and 70240 transitions. [2022-01-18 06:12:39,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-18 06:12:39,245 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.2325581395348837) internal successors, (139), 42 states have internal predecessors, (139), 0 states have call successors, (0), 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 53 [2022-01-18 06:12:39,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:12:39,302 INFO L225 Difference]: With dead ends: 28163 [2022-01-18 06:12:39,302 INFO L226 Difference]: Without dead ends: 27899 [2022-01-18 06:12:39,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 78 SyntacticMatches, 12 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6324 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=2713, Invalid=17027, Unknown=0, NotChecked=0, Total=19740 [2022-01-18 06:12:39,304 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 832 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 2049 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 3844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 2049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1512 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:12:39,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 1585 Invalid, 3844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 2049 Invalid, 0 Unknown, 1512 Unchecked, 1.4s Time] [2022-01-18 06:12:39,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27899 states. [2022-01-18 06:12:39,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27899 to 17143. [2022-01-18 06:12:39,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17143 states, 17142 states have (on average 2.5085170925212927) internal successors, (43001), 17142 states have internal predecessors, (43001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:39,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17143 states to 17143 states and 43001 transitions. [2022-01-18 06:12:39,752 INFO L78 Accepts]: Start accepts. Automaton has 17143 states and 43001 transitions. Word has length 53 [2022-01-18 06:12:39,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:12:39,752 INFO L470 AbstractCegarLoop]: Abstraction has 17143 states and 43001 transitions. [2022-01-18 06:12:39,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.2325581395348837) internal successors, (139), 42 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:39,752 INFO L276 IsEmpty]: Start isEmpty. Operand 17143 states and 43001 transitions. [2022-01-18 06:12:39,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:12:39,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:12:39,768 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:12:39,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-01-18 06:12:39,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-01-18 06:12:39,969 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:12:39,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:12:39,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1116959189, now seen corresponding path program 60 times [2022-01-18 06:12:39,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:12:39,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051361708] [2022-01-18 06:12:39,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:12:39,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:12:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:40,260 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:40,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:12:40,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051361708] [2022-01-18 06:12:40,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051361708] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:12:40,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706270734] [2022-01-18 06:12:40,261 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:12:40,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:40,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:12:40,262 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:12:40,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-18 06:12:40,291 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 06:12:40,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:12:40,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-18 06:12:40,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:41,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:41,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:41,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:41,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:41,228 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 39 [2022-01-18 06:12:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:41,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:42,432 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,435 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,438 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,438 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,438 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,441 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,447 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:42,536 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:12:42,537 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 108 treesize of output 276 [2022-01-18 06:12:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:43,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706270734] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:43,363 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:43,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 38 [2022-01-18 06:12:43,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795687037] [2022-01-18 06:12:43,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:43,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 06:12:43,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:43,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 06:12:43,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1167, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 06:12:43,364 INFO L87 Difference]: Start difference. First operand 17143 states and 43001 transitions. Second operand has 39 states, 39 states have (on average 3.0256410256410255) internal successors, (118), 38 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:55,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:12:55,561 INFO L93 Difference]: Finished difference Result 32203 states and 80275 transitions. [2022-01-18 06:12:55,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-18 06:12:55,562 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.0256410256410255) internal successors, (118), 38 states have internal predecessors, (118), 0 states have call successors, (0), 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 53 [2022-01-18 06:12:55,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:12:55,628 INFO L225 Difference]: With dead ends: 32203 [2022-01-18 06:12:55,629 INFO L226 Difference]: Without dead ends: 32067 [2022-01-18 06:12:55,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 97 SyntacticMatches, 6 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3492 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=1925, Invalid=10284, Unknown=1, NotChecked=0, Total=12210 [2022-01-18 06:12:55,631 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 571 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1877 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:12:55,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [571 Valid, 1250 Invalid, 2681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 700 Invalid, 0 Unknown, 1877 Unchecked, 0.5s Time] [2022-01-18 06:12:55,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32067 states. [2022-01-18 06:12:56,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32067 to 18881. [2022-01-18 06:12:56,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18881 states, 18880 states have (on average 2.5110699152542373) internal successors, (47409), 18880 states have internal predecessors, (47409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:56,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18881 states to 18881 states and 47409 transitions. [2022-01-18 06:12:56,107 INFO L78 Accepts]: Start accepts. Automaton has 18881 states and 47409 transitions. Word has length 53 [2022-01-18 06:12:56,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:12:56,107 INFO L470 AbstractCegarLoop]: Abstraction has 18881 states and 47409 transitions. [2022-01-18 06:12:56,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.0256410256410255) internal successors, (118), 38 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 18881 states and 47409 transitions. [2022-01-18 06:12:56,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:12:56,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:12:56,125 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:12:56,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-01-18 06:12:56,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-01-18 06:12:56,325 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:12:56,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:12:56,326 INFO L85 PathProgramCache]: Analyzing trace with hash -389704747, now seen corresponding path program 61 times [2022-01-18 06:12:56,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:12:56,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43795868] [2022-01-18 06:12:56,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:12:56,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:12:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 84 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 06:12:56,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:12:56,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43795868] [2022-01-18 06:12:56,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43795868] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:12:56,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316495732] [2022-01-18 06:12:56,598 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:12:56,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:56,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:12:56,599 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:12:56,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-18 06:12:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:56,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-18 06:12:56,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:57,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:57,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:57,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:57,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:57,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:57,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:57,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:57,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:57,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:57,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:57,432 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:57,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:57,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:57,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:57,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:57,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:57,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:57,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:57,436 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-01-18 06:12:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:57,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:58,536 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:12:58,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:12:59,475 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 11 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:59,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316495732] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:59,475 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:59,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 34 [2022-01-18 06:12:59,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069522549] [2022-01-18 06:12:59,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:59,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 06:12:59,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:59,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 06:12:59,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=989, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 06:12:59,476 INFO L87 Difference]: Start difference. First operand 18881 states and 47409 transitions. Second operand has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 34 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:01,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:01,983 INFO L93 Difference]: Finished difference Result 30081 states and 75532 transitions. [2022-01-18 06:13:01,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 06:13:01,983 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 34 states have internal predecessors, (113), 0 states have call successors, (0), 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 53 [2022-01-18 06:13:01,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:02,030 INFO L225 Difference]: With dead ends: 30081 [2022-01-18 06:13:02,030 INFO L226 Difference]: Without dead ends: 29397 [2022-01-18 06:13:02,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 81 SyntacticMatches, 7 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1706 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=947, Invalid=5373, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 06:13:02,031 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 645 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 2401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 289 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:02,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [645 Valid, 1594 Invalid, 2401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1932 Invalid, 0 Unknown, 289 Unchecked, 1.0s Time] [2022-01-18 06:13:02,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2022-01-18 06:13:02,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 20929. [2022-01-18 06:13:02,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20929 states, 20928 states have (on average 2.517631880733945) internal successors, (52689), 20928 states have internal predecessors, (52689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20929 states to 20929 states and 52689 transitions. [2022-01-18 06:13:02,444 INFO L78 Accepts]: Start accepts. Automaton has 20929 states and 52689 transitions. Word has length 53 [2022-01-18 06:13:02,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:02,444 INFO L470 AbstractCegarLoop]: Abstraction has 20929 states and 52689 transitions. [2022-01-18 06:13:02,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 34 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:02,444 INFO L276 IsEmpty]: Start isEmpty. Operand 20929 states and 52689 transitions. [2022-01-18 06:13:02,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:13:02,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:02,461 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:02,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-01-18 06:13:02,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:02,661 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:13:02,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:02,663 INFO L85 PathProgramCache]: Analyzing trace with hash 705185237, now seen corresponding path program 62 times [2022-01-18 06:13:02,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:02,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718157540] [2022-01-18 06:13:02,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:02,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:02,938 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:02,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:02,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718157540] [2022-01-18 06:13:02,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718157540] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:02,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830770913] [2022-01-18 06:13:02,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:13:02,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:02,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:02,940 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:13:02,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-18 06:13:02,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:13:02,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:02,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-18 06:13:02,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:03,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,738 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:03,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,744 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:03,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:03,745 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-01-18 06:13:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:03,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:04,820 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:13:04,820 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:13:06,457 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 11 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:06,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830770913] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:06,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:06,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 34 [2022-01-18 06:13:06,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792703032] [2022-01-18 06:13:06,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:06,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 06:13:06,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:06,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 06:13:06,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=980, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 06:13:06,458 INFO L87 Difference]: Start difference. First operand 20929 states and 52689 transitions. Second operand has 35 states, 35 states have (on average 3.2857142857142856) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:09,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:09,604 INFO L93 Difference]: Finished difference Result 35105 states and 87997 transitions. [2022-01-18 06:13:09,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 06:13:09,604 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2857142857142856) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 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 53 [2022-01-18 06:13:09,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:09,666 INFO L225 Difference]: With dead ends: 35105 [2022-01-18 06:13:09,666 INFO L226 Difference]: Without dead ends: 34341 [2022-01-18 06:13:09,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 80 SyntacticMatches, 7 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2694 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1353, Invalid=7019, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 06:13:09,668 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 653 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 2415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:09,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 1695 Invalid, 2415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 2048 Invalid, 0 Unknown, 179 Unchecked, 1.1s Time] [2022-01-18 06:13:09,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34341 states. [2022-01-18 06:13:10,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34341 to 22353. [2022-01-18 06:13:10,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22353 states, 22352 states have (on average 2.5186560486757337) internal successors, (56297), 22352 states have internal predecessors, (56297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:10,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22353 states to 22353 states and 56297 transitions. [2022-01-18 06:13:10,281 INFO L78 Accepts]: Start accepts. Automaton has 22353 states and 56297 transitions. Word has length 53 [2022-01-18 06:13:10,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:10,281 INFO L470 AbstractCegarLoop]: Abstraction has 22353 states and 56297 transitions. [2022-01-18 06:13:10,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2857142857142856) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:10,281 INFO L276 IsEmpty]: Start isEmpty. Operand 22353 states and 56297 transitions. [2022-01-18 06:13:10,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:13:10,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:10,297 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:10,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-01-18 06:13:10,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-01-18 06:13:10,498 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:13:10,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:10,498 INFO L85 PathProgramCache]: Analyzing trace with hash 458083797, now seen corresponding path program 63 times [2022-01-18 06:13:10,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:10,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414754913] [2022-01-18 06:13:10,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:10,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:10,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:10,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414754913] [2022-01-18 06:13:10,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414754913] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:10,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615854437] [2022-01-18 06:13:10,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:13:10,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:10,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:10,993 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:13:10,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-18 06:13:11,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 06:13:11,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:11,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-18 06:13:11,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:11,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:11,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:11,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:11,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:11,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:11,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:11,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:11,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:11,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:11,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:11,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:11,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:11,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:11,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:11,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:11,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:11,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:11,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:11,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:11,886 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 39 [2022-01-18 06:13:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:11,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:12,897 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:13:12,897 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:13:13,932 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 12 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:13,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615854437] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:13,932 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:13,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 06:13:13,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658898138] [2022-01-18 06:13:13,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:13,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 06:13:13,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:13,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 06:13:13,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 06:13:13,933 INFO L87 Difference]: Start difference. First operand 22353 states and 56297 transitions. Second operand has 37 states, 37 states have (on average 3.108108108108108) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:16,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:16,569 INFO L93 Difference]: Finished difference Result 35277 states and 89074 transitions. [2022-01-18 06:13:16,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 06:13:16,569 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.108108108108108) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 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 53 [2022-01-18 06:13:16,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:16,642 INFO L225 Difference]: With dead ends: 35277 [2022-01-18 06:13:16,642 INFO L226 Difference]: Without dead ends: 34933 [2022-01-18 06:13:16,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 80 SyntacticMatches, 5 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2212 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1189, Invalid=6643, Unknown=0, NotChecked=0, Total=7832 [2022-01-18 06:13:16,643 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 561 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 2527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 673 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:16,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 1427 Invalid, 2527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1750 Invalid, 0 Unknown, 673 Unchecked, 0.9s Time] [2022-01-18 06:13:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34933 states. [2022-01-18 06:13:17,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34933 to 22769. [2022-01-18 06:13:17,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22769 states, 22768 states have (on average 2.5200720309205904) internal successors, (57377), 22768 states have internal predecessors, (57377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:17,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22769 states to 22769 states and 57377 transitions. [2022-01-18 06:13:17,192 INFO L78 Accepts]: Start accepts. Automaton has 22769 states and 57377 transitions. Word has length 53 [2022-01-18 06:13:17,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:17,192 INFO L470 AbstractCegarLoop]: Abstraction has 22769 states and 57377 transitions. [2022-01-18 06:13:17,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.108108108108108) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:17,192 INFO L276 IsEmpty]: Start isEmpty. Operand 22769 states and 57377 transitions. [2022-01-18 06:13:17,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:13:17,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:17,213 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:17,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-01-18 06:13:17,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-01-18 06:13:17,414 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:13:17,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:17,414 INFO L85 PathProgramCache]: Analyzing trace with hash -671158315, now seen corresponding path program 64 times [2022-01-18 06:13:17,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:17,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786220664] [2022-01-18 06:13:17,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:17,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:17,766 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:17,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:17,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786220664] [2022-01-18 06:13:17,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786220664] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:17,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477025753] [2022-01-18 06:13:17,767 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:13:17,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:17,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:17,768 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:13:17,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-18 06:13:17,801 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:13:17,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:17,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-18 06:13:17,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:18,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:18,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:18,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:18,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:18,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:18,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:18,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:18,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:18,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:18,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:18,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:18,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:18,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:18,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:18,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:18,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:18,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:18,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:18,675 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-01-18 06:13:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:18,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:19,754 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:13:19,755 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:13:20,757 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:20,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477025753] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:20,757 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:20,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 33 [2022-01-18 06:13:20,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543070393] [2022-01-18 06:13:20,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:20,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 06:13:20,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:20,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 06:13:20,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=923, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 06:13:20,758 INFO L87 Difference]: Start difference. First operand 22769 states and 57377 transitions. Second operand has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:22,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:22,983 INFO L93 Difference]: Finished difference Result 31133 states and 77950 transitions. [2022-01-18 06:13:22,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 06:13:22,983 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 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 53 [2022-01-18 06:13:22,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:23,034 INFO L225 Difference]: With dead ends: 31133 [2022-01-18 06:13:23,034 INFO L226 Difference]: Without dead ends: 30577 [2022-01-18 06:13:23,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 80 SyntacticMatches, 8 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=886, Invalid=4814, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 06:13:23,035 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 613 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 1939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:23,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 1272 Invalid, 1939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1696 Invalid, 0 Unknown, 71 Unchecked, 0.9s Time] [2022-01-18 06:13:23,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30577 states. [2022-01-18 06:13:23,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30577 to 23649. [2022-01-18 06:13:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23649 states, 23648 states have (on average 2.519325101488498) internal successors, (59577), 23648 states have internal predecessors, (59577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:23,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23649 states to 23649 states and 59577 transitions. [2022-01-18 06:13:23,474 INFO L78 Accepts]: Start accepts. Automaton has 23649 states and 59577 transitions. Word has length 53 [2022-01-18 06:13:23,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:23,475 INFO L470 AbstractCegarLoop]: Abstraction has 23649 states and 59577 transitions. [2022-01-18 06:13:23,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:23,475 INFO L276 IsEmpty]: Start isEmpty. Operand 23649 states and 59577 transitions. [2022-01-18 06:13:23,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:13:23,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:23,496 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:23,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-01-18 06:13:23,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:23,697 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:13:23,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:23,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1617081301, now seen corresponding path program 65 times [2022-01-18 06:13:23,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:23,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830850309] [2022-01-18 06:13:23,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:23,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:23,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:23,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830850309] [2022-01-18 06:13:23,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830850309] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:23,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353895174] [2022-01-18 06:13:23,982 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:13:23,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:23,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:23,983 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:13:23,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-18 06:13:24,008 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 06:13:24,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:24,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-18 06:13:24,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:24,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:24,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:24,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-01-18 06:13:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:24,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:25,920 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:13:25,920 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:13:27,480 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:27,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353895174] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:27,481 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:27,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 34 [2022-01-18 06:13:27,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647061728] [2022-01-18 06:13:27,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:27,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 06:13:27,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:27,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 06:13:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=986, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 06:13:27,482 INFO L87 Difference]: Start difference. First operand 23649 states and 59577 transitions. Second operand has 35 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:30,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:30,317 INFO L93 Difference]: Finished difference Result 40039 states and 100512 transitions. [2022-01-18 06:13:30,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 06:13:30,317 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 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 53 [2022-01-18 06:13:30,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:30,378 INFO L225 Difference]: With dead ends: 40039 [2022-01-18 06:13:30,379 INFO L226 Difference]: Without dead ends: 39671 [2022-01-18 06:13:30,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 81 SyntacticMatches, 7 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2072 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1147, Invalid=6509, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 06:13:30,380 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 417 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 2697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 295 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:30,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 1736 Invalid, 2697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2316 Invalid, 0 Unknown, 295 Unchecked, 1.2s Time] [2022-01-18 06:13:30,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39671 states. [2022-01-18 06:13:30,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39671 to 25333. [2022-01-18 06:13:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25333 states, 25332 states have (on average 2.5189088899415757) internal successors, (63809), 25332 states have internal predecessors, (63809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:30,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25333 states to 25333 states and 63809 transitions. [2022-01-18 06:13:30,859 INFO L78 Accepts]: Start accepts. Automaton has 25333 states and 63809 transitions. Word has length 53 [2022-01-18 06:13:30,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:30,859 INFO L470 AbstractCegarLoop]: Abstraction has 25333 states and 63809 transitions. [2022-01-18 06:13:30,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:30,859 INFO L276 IsEmpty]: Start isEmpty. Operand 25333 states and 63809 transitions. [2022-01-18 06:13:30,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:13:30,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:30,878 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:30,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-01-18 06:13:31,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2022-01-18 06:13:31,079 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:13:31,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:31,079 INFO L85 PathProgramCache]: Analyzing trace with hash -918259755, now seen corresponding path program 66 times [2022-01-18 06:13:31,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:31,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381914091] [2022-01-18 06:13:31,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:31,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:31,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:31,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381914091] [2022-01-18 06:13:31,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381914091] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:31,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027376125] [2022-01-18 06:13:31,401 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:13:31,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:31,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:31,402 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:13:31,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-18 06:13:31,429 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 06:13:31,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:31,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-18 06:13:31,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:32,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:32,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:32,302 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-01-18 06:13:32,317 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:32,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:33,336 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:13:33,336 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:13:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:34,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027376125] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:34,754 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:34,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-01-18 06:13:34,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598896965] [2022-01-18 06:13:34,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:34,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 06:13:34,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:34,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 06:13:34,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1051, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:13:34,755 INFO L87 Difference]: Start difference. First operand 25333 states and 63809 transitions. Second operand has 36 states, 36 states have (on average 3.0833333333333335) internal successors, (111), 35 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:37,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:37,372 INFO L93 Difference]: Finished difference Result 40181 states and 101224 transitions. [2022-01-18 06:13:37,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 06:13:37,372 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.0833333333333335) internal successors, (111), 35 states have internal predecessors, (111), 0 states have call successors, (0), 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 53 [2022-01-18 06:13:37,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:37,434 INFO L225 Difference]: With dead ends: 40181 [2022-01-18 06:13:37,434 INFO L226 Difference]: Without dead ends: 39841 [2022-01-18 06:13:37,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2099 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1197, Invalid=6813, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 06:13:37,435 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 534 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 2546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 874 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:37,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 1267 Invalid, 2546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1575 Invalid, 0 Unknown, 874 Unchecked, 0.8s Time] [2022-01-18 06:13:37,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39841 states. [2022-01-18 06:13:37,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39841 to 25765. [2022-01-18 06:13:37,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25765 states, 25764 states have (on average 2.5185918335662163) internal successors, (64889), 25764 states have internal predecessors, (64889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:37,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25765 states to 25765 states and 64889 transitions. [2022-01-18 06:13:37,909 INFO L78 Accepts]: Start accepts. Automaton has 25765 states and 64889 transitions. Word has length 53 [2022-01-18 06:13:37,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:37,909 INFO L470 AbstractCegarLoop]: Abstraction has 25765 states and 64889 transitions. [2022-01-18 06:13:37,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.0833333333333335) internal successors, (111), 35 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:37,909 INFO L276 IsEmpty]: Start isEmpty. Operand 25765 states and 64889 transitions. [2022-01-18 06:13:37,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:13:37,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:37,929 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:37,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-01-18 06:13:38,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:38,129 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:13:38,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:38,129 INFO L85 PathProgramCache]: Analyzing trace with hash 875862485, now seen corresponding path program 67 times [2022-01-18 06:13:38,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:38,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135118243] [2022-01-18 06:13:38,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:38,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:38,451 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:38,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:38,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135118243] [2022-01-18 06:13:38,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135118243] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:38,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882383661] [2022-01-18 06:13:38,451 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:13:38,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:38,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:38,452 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:13:38,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-01-18 06:13:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:38,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-18 06:13:38,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:39,145 INFO L353 Elim1Store]: treesize reduction 170, result has 0.6 percent of original size [2022-01-18 06:13:39,145 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 105 treesize of output 39 [2022-01-18 06:13:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:39,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:40,260 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:13:40,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:13:41,006 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 27 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:41,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882383661] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:41,006 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:41,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-01-18 06:13:41,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731898288] [2022-01-18 06:13:41,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:41,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 06:13:41,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:41,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 06:13:41,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=992, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 06:13:41,007 INFO L87 Difference]: Start difference. First operand 25765 states and 64889 transitions. Second operand has 35 states, 35 states have (on average 3.057142857142857) internal successors, (107), 34 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:43,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:43,520 INFO L93 Difference]: Finished difference Result 37081 states and 93073 transitions. [2022-01-18 06:13:43,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 06:13:43,520 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.057142857142857) internal successors, (107), 34 states have internal predecessors, (107), 0 states have call successors, (0), 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 53 [2022-01-18 06:13:43,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:43,588 INFO L225 Difference]: With dead ends: 37081 [2022-01-18 06:13:43,588 INFO L226 Difference]: Without dead ends: 37021 [2022-01-18 06:13:43,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 80 SyntacticMatches, 7 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=988, Invalid=5654, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 06:13:43,589 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 425 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 2413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:43,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 1297 Invalid, 2413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 06:13:43,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37021 states. [2022-01-18 06:13:44,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37021 to 25821. [2022-01-18 06:13:44,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25821 states, 25820 states have (on average 2.5187064291247094) internal successors, (65033), 25820 states have internal predecessors, (65033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25821 states to 25821 states and 65033 transitions. [2022-01-18 06:13:44,084 INFO L78 Accepts]: Start accepts. Automaton has 25821 states and 65033 transitions. Word has length 53 [2022-01-18 06:13:44,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:44,084 INFO L470 AbstractCegarLoop]: Abstraction has 25821 states and 65033 transitions. [2022-01-18 06:13:44,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.057142857142857) internal successors, (107), 34 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:44,084 INFO L276 IsEmpty]: Start isEmpty. Operand 25821 states and 65033 transitions. [2022-01-18 06:13:44,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:13:44,104 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:44,104 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:44,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-01-18 06:13:44,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:44,304 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:13:44,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:44,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1209502259, now seen corresponding path program 68 times [2022-01-18 06:13:44,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:44,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787685949] [2022-01-18 06:13:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:44,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:44,634 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:44,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:44,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787685949] [2022-01-18 06:13:44,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787685949] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:44,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253962187] [2022-01-18 06:13:44,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:13:44,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:44,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:44,640 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:13:44,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-01-18 06:13:44,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:13:44,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:44,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-18 06:13:44,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:45,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:45,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:45,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:45,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:45,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:45,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:45,606 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 39 [2022-01-18 06:13:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:45,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:46,783 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:13:46,783 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:13:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 14 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:47,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253962187] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:47,816 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:47,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2022-01-18 06:13:47,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801702205] [2022-01-18 06:13:47,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:47,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 06:13:47,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:47,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 06:13:47,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1319, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 06:13:47,817 INFO L87 Difference]: Start difference. First operand 25821 states and 65033 transitions. Second operand has 40 states, 40 states have (on average 3.2) internal successors, (128), 39 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:50,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:50,360 INFO L93 Difference]: Finished difference Result 33215 states and 83748 transitions. [2022-01-18 06:13:50,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 06:13:50,361 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.2) internal successors, (128), 39 states have internal predecessors, (128), 0 states have call successors, (0), 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 53 [2022-01-18 06:13:50,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:50,413 INFO L225 Difference]: With dead ends: 33215 [2022-01-18 06:13:50,413 INFO L226 Difference]: Without dead ends: 33115 [2022-01-18 06:13:50,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2460 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1125, Invalid=7431, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 06:13:50,414 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 363 mSDsluCounter, 2208 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 2600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 745 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:50,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 1543 Invalid, 2600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1784 Invalid, 0 Unknown, 745 Unchecked, 0.9s Time] [2022-01-18 06:13:50,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33115 states. [2022-01-18 06:13:50,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33115 to 28433. [2022-01-18 06:13:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28433 states, 28432 states have (on average 2.523389138998312) internal successors, (71745), 28432 states have internal predecessors, (71745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:50,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28433 states to 28433 states and 71745 transitions. [2022-01-18 06:13:50,923 INFO L78 Accepts]: Start accepts. Automaton has 28433 states and 71745 transitions. Word has length 53 [2022-01-18 06:13:50,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:50,924 INFO L470 AbstractCegarLoop]: Abstraction has 28433 states and 71745 transitions. [2022-01-18 06:13:50,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.2) internal successors, (128), 39 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:50,924 INFO L276 IsEmpty]: Start isEmpty. Operand 28433 states and 71745 transitions. [2022-01-18 06:13:50,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-18 06:13:50,956 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:50,956 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:50,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-01-18 06:13:51,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:51,179 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:13:51,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:51,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1602140475, now seen corresponding path program 69 times [2022-01-18 06:13:51,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:51,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673072787] [2022-01-18 06:13:51,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:51,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:51,487 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:51,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:51,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673072787] [2022-01-18 06:13:51,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673072787] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:51,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532587844] [2022-01-18 06:13:51,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:13:51,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:51,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:51,489 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:13:51,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-01-18 06:13:51,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 06:13:51,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:51,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-18 06:13:51,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:52,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:52,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:52,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:52,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,401 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:52,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:52,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:52,404 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-01-18 06:13:52,418 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:52,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:53,517 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:13:53,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:13:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 24 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:54,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532587844] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:54,441 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:54,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2022-01-18 06:13:54,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181902362] [2022-01-18 06:13:54,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:54,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 06:13:54,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:54,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 06:13:54,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1317, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 06:13:54,442 INFO L87 Difference]: Start difference. First operand 28433 states and 71745 transitions. Second operand has 40 states, 40 states have (on average 3.2) internal successors, (128), 39 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:57,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:57,178 INFO L93 Difference]: Finished difference Result 40173 states and 100885 transitions. [2022-01-18 06:13:57,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 06:13:57,179 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.2) internal successors, (128), 39 states have internal predecessors, (128), 0 states have call successors, (0), 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 53 [2022-01-18 06:13:57,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:57,242 INFO L225 Difference]: With dead ends: 40173 [2022-01-18 06:13:57,242 INFO L226 Difference]: Without dead ends: 40133 [2022-01-18 06:13:57,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2788 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1166, Invalid=8536, Unknown=0, NotChecked=0, Total=9702 [2022-01-18 06:13:57,244 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 422 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 2585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 736 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:57,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 1357 Invalid, 2585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1770 Invalid, 0 Unknown, 736 Unchecked, 0.9s Time] [2022-01-18 06:13:57,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40133 states. [2022-01-18 06:13:57,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40133 to 29387. [2022-01-18 06:13:57,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29387 states, 29386 states have (on average 2.5208262437895597) internal successors, (74077), 29386 states have internal predecessors, (74077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:57,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29387 states to 29387 states and 74077 transitions. [2022-01-18 06:13:57,751 INFO L78 Accepts]: Start accepts. Automaton has 29387 states and 74077 transitions. Word has length 53 [2022-01-18 06:13:57,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:57,751 INFO L470 AbstractCegarLoop]: Abstraction has 29387 states and 74077 transitions. [2022-01-18 06:13:57,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.2) internal successors, (128), 39 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:57,752 INFO L276 IsEmpty]: Start isEmpty. Operand 29387 states and 74077 transitions. [2022-01-18 06:13:57,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-18 06:13:57,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:57,783 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:57,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-01-18 06:13:57,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-01-18 06:13:57,990 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:13:57,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:57,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1966228311, now seen corresponding path program 70 times [2022-01-18 06:13:57,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:57,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505724419] [2022-01-18 06:13:57,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:57,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:58,041 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 49 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:58,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:58,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505724419] [2022-01-18 06:13:58,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505724419] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:58,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6837492] [2022-01-18 06:13:58,041 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:13:58,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:58,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:58,042 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:13:58,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-01-18 06:13:58,067 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:13:58,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:58,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 06:13:58,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 49 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:13:58,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:58,237 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 49 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:13:58,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6837492] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:58,237 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:58,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2022-01-18 06:13:58,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428092393] [2022-01-18 06:13:58,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:58,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 06:13:58,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:58,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 06:13:58,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-01-18 06:13:58,238 INFO L87 Difference]: Start difference. First operand 29387 states and 74077 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:58,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:58,401 INFO L93 Difference]: Finished difference Result 39395 states and 99530 transitions. [2022-01-18 06:13:58,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 06:13:58,401 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 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 55 [2022-01-18 06:13:58,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:58,464 INFO L225 Difference]: With dead ends: 39395 [2022-01-18 06:13:58,464 INFO L226 Difference]: Without dead ends: 39387 [2022-01-18 06:13:58,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-01-18 06:13:58,464 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 147 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:58,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 133 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 06:13:58,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39387 states. [2022-01-18 06:13:59,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39387 to 36835. [2022-01-18 06:13:59,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36835 states, 36834 states have (on average 2.5278546994624533) internal successors, (93111), 36834 states have internal predecessors, (93111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36835 states to 36835 states and 93111 transitions. [2022-01-18 06:13:59,114 INFO L78 Accepts]: Start accepts. Automaton has 36835 states and 93111 transitions. Word has length 55 [2022-01-18 06:13:59,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:59,114 INFO L470 AbstractCegarLoop]: Abstraction has 36835 states and 93111 transitions. [2022-01-18 06:13:59,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:59,114 INFO L276 IsEmpty]: Start isEmpty. Operand 36835 states and 93111 transitions. [2022-01-18 06:13:59,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-18 06:13:59,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:59,140 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:59,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-01-18 06:13:59,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:59,340 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:13:59,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:59,342 INFO L85 PathProgramCache]: Analyzing trace with hash -2044077263, now seen corresponding path program 71 times [2022-01-18 06:13:59,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:59,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158544363] [2022-01-18 06:13:59,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:59,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:59,656 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 107 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:13:59,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:59,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158544363] [2022-01-18 06:13:59,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158544363] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:59,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578772829] [2022-01-18 06:13:59,657 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:13:59,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:59,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:59,660 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:13:59,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-01-18 06:13:59,704 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-01-18 06:13:59,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:59,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-18 06:13:59,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:14:00,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:00,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:00,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:00,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:00,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:00,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:00,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:00,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:00,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:00,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:00,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:00,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:00,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:00,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:00,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:00,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:00,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:00,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:00,551 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-01-18 06:14:00,565 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 107 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:14:00,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:14:01,581 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:14:01,581 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:14:02,525 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 19 proven. 95 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:14:02,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578772829] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:14:02,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:14:02,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 35 [2022-01-18 06:14:02,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525448248] [2022-01-18 06:14:02,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:14:02,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 06:14:02,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:14:02,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 06:14:02,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1053, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:14:02,526 INFO L87 Difference]: Start difference. First operand 36835 states and 93111 transitions. Second operand has 36 states, 36 states have (on average 3.4444444444444446) internal successors, (124), 35 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:05,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:14:05,090 INFO L93 Difference]: Finished difference Result 52229 states and 132082 transitions. [2022-01-18 06:14:05,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 06:14:05,091 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.4444444444444446) internal successors, (124), 35 states have internal predecessors, (124), 0 states have call successors, (0), 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 57 [2022-01-18 06:14:05,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:14:05,206 INFO L225 Difference]: With dead ends: 52229 [2022-01-18 06:14:05,206 INFO L226 Difference]: Without dead ends: 52025 [2022-01-18 06:14:05,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 6 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2036 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1120, Invalid=6362, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 06:14:05,207 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 641 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 1968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 497 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:14:05,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [641 Valid, 1021 Invalid, 1968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1347 Invalid, 0 Unknown, 497 Unchecked, 0.8s Time] [2022-01-18 06:14:05,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52025 states. [2022-01-18 06:14:05,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52025 to 37451. [2022-01-18 06:14:05,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37451 states, 37450 states have (on average 2.526648865153538) internal successors, (94623), 37450 states have internal predecessors, (94623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:05,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37451 states to 37451 states and 94623 transitions. [2022-01-18 06:14:05,979 INFO L78 Accepts]: Start accepts. Automaton has 37451 states and 94623 transitions. Word has length 57 [2022-01-18 06:14:05,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:14:05,980 INFO L470 AbstractCegarLoop]: Abstraction has 37451 states and 94623 transitions. [2022-01-18 06:14:05,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.4444444444444446) internal successors, (124), 35 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:05,980 INFO L276 IsEmpty]: Start isEmpty. Operand 37451 states and 94623 transitions. [2022-01-18 06:14:06,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-18 06:14:06,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:14:06,006 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:14:06,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-01-18 06:14:06,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:06,207 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:14:06,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:14:06,207 INFO L85 PathProgramCache]: Analyzing trace with hash 587526449, now seen corresponding path program 72 times [2022-01-18 06:14:06,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:14:06,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456973809] [2022-01-18 06:14:06,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:14:06,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:14:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 107 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:14:06,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:14:06,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456973809] [2022-01-18 06:14:06,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456973809] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:14:06,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424941310] [2022-01-18 06:14:06,515 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:14:06,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:06,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:14:06,516 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:14:06,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-01-18 06:14:06,544 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-01-18 06:14:06,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:14:06,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-18 06:14:06,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:14:07,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:07,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:07,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:07,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:07,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:07,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:07,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:07,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:07,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:07,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:07,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:07,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:07,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:07,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:07,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:07,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:07,406 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 39 [2022-01-18 06:14:07,420 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 107 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:14:07,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:14:08,416 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:14:08,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 394 [2022-01-18 06:14:09,477 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 19 proven. 95 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:14:09,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424941310] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:14:09,478 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:14:09,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-01-18 06:14:09,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223527401] [2022-01-18 06:14:09,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:14:09,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 06:14:09,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:14:09,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 06:14:09,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1051, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:14:09,479 INFO L87 Difference]: Start difference. First operand 37451 states and 94623 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 35 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:12,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:14:12,764 INFO L93 Difference]: Finished difference Result 53507 states and 135172 transitions. [2022-01-18 06:14:12,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 06:14:12,765 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 35 states have internal predecessors, (120), 0 states have call successors, (0), 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 57 [2022-01-18 06:14:12,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:14:12,872 INFO L225 Difference]: With dead ends: 53507 [2022-01-18 06:14:12,873 INFO L226 Difference]: Without dead ends: 53387 [2022-01-18 06:14:12,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 90 SyntacticMatches, 6 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3310 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1722, Invalid=9198, Unknown=0, NotChecked=0, Total=10920 [2022-01-18 06:14:12,874 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 496 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 941 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:14:12,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 1488 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1762 Invalid, 0 Unknown, 941 Unchecked, 0.9s Time] [2022-01-18 06:14:12,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53387 states. [2022-01-18 06:14:13,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53387 to 37355. [2022-01-18 06:14:13,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37355 states, 37354 states have (on average 2.5267173528939337) internal successors, (94383), 37354 states have internal predecessors, (94383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37355 states to 37355 states and 94383 transitions. [2022-01-18 06:14:13,571 INFO L78 Accepts]: Start accepts. Automaton has 37355 states and 94383 transitions. Word has length 57 [2022-01-18 06:14:13,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:14:13,571 INFO L470 AbstractCegarLoop]: Abstraction has 37355 states and 94383 transitions. [2022-01-18 06:14:13,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 35 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:13,571 INFO L276 IsEmpty]: Start isEmpty. Operand 37355 states and 94383 transitions. [2022-01-18 06:14:13,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-18 06:14:13,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:14:13,597 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:14:13,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-01-18 06:14:13,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-01-18 06:14:13,797 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:14:13,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:14:13,797 INFO L85 PathProgramCache]: Analyzing trace with hash 558366295, now seen corresponding path program 73 times [2022-01-18 06:14:13,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:14:13,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350750943] [2022-01-18 06:14:13,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:14:13,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:14:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:14,089 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:14,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:14:14,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350750943] [2022-01-18 06:14:14,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350750943] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:14:14,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584095948] [2022-01-18 06:14:14,089 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:14:14,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:14,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:14:14,090 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:14:14,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-01-18 06:14:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:14,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-18 06:14:14,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:14:14,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:14,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:14,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:14,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:14,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:14,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:14,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:14,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:14,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:14,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:14,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:14,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:14,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:14,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:14,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:14,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:14,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:14,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:14,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:14,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:14,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:14,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 39 [2022-01-18 06:14:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:14,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:14:15,960 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:14:15,960 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 114 treesize of output 396 [2022-01-18 06:14:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 12 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:17,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584095948] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:14:17,182 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:14:17,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 06:14:17,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884237895] [2022-01-18 06:14:17,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:14:17,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 06:14:17,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:14:17,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 06:14:17,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1182, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 06:14:17,183 INFO L87 Difference]: Start difference. First operand 37355 states and 94383 transitions. Second operand has 38 states, 38 states have (on average 3.210526315789474) internal successors, (122), 37 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:21,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:14:21,216 INFO L93 Difference]: Finished difference Result 64183 states and 161965 transitions. [2022-01-18 06:14:21,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 06:14:21,216 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.210526315789474) internal successors, (122), 37 states have internal predecessors, (122), 0 states have call successors, (0), 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 57 [2022-01-18 06:14:21,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:14:21,329 INFO L225 Difference]: With dead ends: 64183 [2022-01-18 06:14:21,329 INFO L226 Difference]: Without dead ends: 63191 [2022-01-18 06:14:21,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 88 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2988 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1352, Invalid=8350, Unknown=0, NotChecked=0, Total=9702 [2022-01-18 06:14:21,330 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 751 mSDsluCounter, 3324 mSDsCounter, 0 mSdLazyCounter, 2964 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 3501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 2964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 276 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:14:21,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 2409 Invalid, 3501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 2964 Invalid, 0 Unknown, 276 Unchecked, 1.6s Time] [2022-01-18 06:14:21,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63191 states. [2022-01-18 06:14:22,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63191 to 43061. [2022-01-18 06:14:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43061 states, 43060 states have (on average 2.5259869948908498) internal successors, (108769), 43060 states have internal predecessors, (108769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:22,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43061 states to 43061 states and 108769 transitions. [2022-01-18 06:14:22,194 INFO L78 Accepts]: Start accepts. Automaton has 43061 states and 108769 transitions. Word has length 57 [2022-01-18 06:14:22,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:14:22,194 INFO L470 AbstractCegarLoop]: Abstraction has 43061 states and 108769 transitions. [2022-01-18 06:14:22,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.210526315789474) internal successors, (122), 37 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:22,194 INFO L276 IsEmpty]: Start isEmpty. Operand 43061 states and 108769 transitions. [2022-01-18 06:14:22,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:14:22,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:14:22,228 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:14:22,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-01-18 06:14:22,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-01-18 06:14:22,429 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:14:22,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:14:22,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1412485197, now seen corresponding path program 74 times [2022-01-18 06:14:22,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:14:22,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535364582] [2022-01-18 06:14:22,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:14:22,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:14:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:22,735 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 120 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:14:22,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:14:22,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535364582] [2022-01-18 06:14:22,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535364582] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:14:22,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56289650] [2022-01-18 06:14:22,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:14:22,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:22,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:14:22,736 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:14:22,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-01-18 06:14:22,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:14:22,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:14:22,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:14:22,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:14:23,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:23,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:23,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:23,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:23,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:23,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:23,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:23,909 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:14:23,923 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 12 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:23,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:14:25,413 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:14:25,413 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:14:26,937 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 15 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:26,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56289650] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:14:26,937 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:14:26,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 44 [2022-01-18 06:14:26,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989010970] [2022-01-18 06:14:26,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:14:26,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 06:14:26,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:14:26,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 06:14:26,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1695, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:14:26,938 INFO L87 Difference]: Start difference. First operand 43061 states and 108769 transitions. Second operand has 45 states, 45 states have (on average 3.2) internal successors, (144), 44 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:34,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:14:34,302 INFO L93 Difference]: Finished difference Result 86833 states and 219029 transitions. [2022-01-18 06:14:34,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-01-18 06:14:34,302 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.2) internal successors, (144), 44 states have internal predecessors, (144), 0 states have call successors, (0), 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 59 [2022-01-18 06:14:34,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:14:34,464 INFO L225 Difference]: With dead ends: 86833 [2022-01-18 06:14:34,464 INFO L226 Difference]: Without dead ends: 86481 [2022-01-18 06:14:34,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 96 SyntacticMatches, 2 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13356 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=4041, Invalid=30741, Unknown=0, NotChecked=0, Total=34782 [2022-01-18 06:14:34,468 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 933 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 3581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 610 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 06:14:34,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [933 Valid, 2287 Invalid, 3581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 2771 Invalid, 0 Unknown, 610 Unchecked, 1.7s Time] [2022-01-18 06:14:34,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86481 states. [2022-01-18 06:14:35,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86481 to 53465. [2022-01-18 06:14:35,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53465 states, 53464 states have (on average 2.5260923238066737) internal successors, (135055), 53464 states have internal predecessors, (135055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:35,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53465 states to 53465 states and 135055 transitions. [2022-01-18 06:14:35,842 INFO L78 Accepts]: Start accepts. Automaton has 53465 states and 135055 transitions. Word has length 59 [2022-01-18 06:14:35,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:14:35,842 INFO L470 AbstractCegarLoop]: Abstraction has 53465 states and 135055 transitions. [2022-01-18 06:14:35,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.2) internal successors, (144), 44 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:35,843 INFO L276 IsEmpty]: Start isEmpty. Operand 53465 states and 135055 transitions. [2022-01-18 06:14:35,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:14:35,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:14:35,882 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:14:35,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-01-18 06:14:36,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:36,083 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:14:36,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:14:36,085 INFO L85 PathProgramCache]: Analyzing trace with hash 445471155, now seen corresponding path program 75 times [2022-01-18 06:14:36,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:14:36,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921271624] [2022-01-18 06:14:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:14:36,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:14:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 120 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:14:36,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:14:36,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921271624] [2022-01-18 06:14:36,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921271624] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:14:36,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524354813] [2022-01-18 06:14:36,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:14:36,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:36,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:14:36,404 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:14:36,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-01-18 06:14:36,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-01-18 06:14:36,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:14:36,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-18 06:14:36,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:14:37,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:37,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:37,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:37,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:37,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:37,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:37,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:37,714 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2022-01-18 06:14:37,728 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 12 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:37,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:14:38,724 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,730 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,730 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,751 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,751 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,751 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:38,882 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:14:38,882 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 63 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 372 [2022-01-18 06:14:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:39,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524354813] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:14:39,629 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:14:39,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 45 [2022-01-18 06:14:39,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550864190] [2022-01-18 06:14:39,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:14:39,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 06:14:39,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:14:39,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 06:14:39,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=455, Invalid=1615, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 06:14:39,630 INFO L87 Difference]: Start difference. First operand 53465 states and 135055 transitions. Second operand has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 45 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:49,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:14:49,597 INFO L93 Difference]: Finished difference Result 79961 states and 200836 transitions. [2022-01-18 06:14:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-01-18 06:14:49,597 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 45 states have internal predecessors, (145), 0 states have call successors, (0), 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 59 [2022-01-18 06:14:49,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:14:49,744 INFO L225 Difference]: With dead ends: 79961 [2022-01-18 06:14:49,744 INFO L226 Difference]: Without dead ends: 79649 [2022-01-18 06:14:49,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10879 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=4069, Invalid=25687, Unknown=0, NotChecked=0, Total=29756 [2022-01-18 06:14:49,746 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 903 mSDsluCounter, 3657 mSDsCounter, 0 mSdLazyCounter, 3431 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 4198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 3431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 554 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:14:49,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [903 Valid, 2576 Invalid, 4198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 3431 Invalid, 0 Unknown, 554 Unchecked, 2.2s Time] [2022-01-18 06:14:49,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79649 states. [2022-01-18 06:14:50,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79649 to 58101. [2022-01-18 06:14:50,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58101 states, 58100 states have (on average 2.5279690189328745) internal successors, (146875), 58100 states have internal predecessors, (146875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:51,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58101 states to 58101 states and 146875 transitions. [2022-01-18 06:14:51,028 INFO L78 Accepts]: Start accepts. Automaton has 58101 states and 146875 transitions. Word has length 59 [2022-01-18 06:14:51,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:14:51,028 INFO L470 AbstractCegarLoop]: Abstraction has 58101 states and 146875 transitions. [2022-01-18 06:14:51,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 45 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:51,028 INFO L276 IsEmpty]: Start isEmpty. Operand 58101 states and 146875 transitions. [2022-01-18 06:14:51,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:14:51,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:14:51,074 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:14:51,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-01-18 06:14:51,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:51,275 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:14:51,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:14:51,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1531796403, now seen corresponding path program 76 times [2022-01-18 06:14:51,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:14:51,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713136419] [2022-01-18 06:14:51,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:14:51,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:14:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:51,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:14:51,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713136419] [2022-01-18 06:14:51,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713136419] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:14:51,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491238096] [2022-01-18 06:14:51,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:14:51,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:51,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:14:51,563 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:14:51,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-01-18 06:14:51,589 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:14:51,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:14:51,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:14:51,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:14:52,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:52,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:52,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:52,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:52,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:52,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:52,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:52,678 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:14:52,692 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:52,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:14:54,153 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:14:54,153 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:14:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:55,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491238096] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:14:55,274 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:14:55,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 18] total 42 [2022-01-18 06:14:55,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815720025] [2022-01-18 06:14:55,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:14:55,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 06:14:55,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:14:55,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 06:14:55,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=1506, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 06:14:55,274 INFO L87 Difference]: Start difference. First operand 58101 states and 146875 transitions. Second operand has 43 states, 43 states have (on average 3.372093023255814) internal successors, (145), 42 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:59,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:14:59,713 INFO L93 Difference]: Finished difference Result 76917 states and 194213 transitions. [2022-01-18 06:14:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 06:14:59,713 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.372093023255814) internal successors, (145), 42 states have internal predecessors, (145), 0 states have call successors, (0), 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 59 [2022-01-18 06:14:59,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:14:59,847 INFO L225 Difference]: With dead ends: 76917 [2022-01-18 06:14:59,848 INFO L226 Difference]: Without dead ends: 76061 [2022-01-18 06:14:59,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 90 SyntacticMatches, 3 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3745 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1433, Invalid=10123, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 06:14:59,848 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 894 mSDsluCounter, 4041 mSDsCounter, 0 mSdLazyCounter, 3302 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 3749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 3302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 182 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:14:59,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 2875 Invalid, 3749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 3302 Invalid, 0 Unknown, 182 Unchecked, 1.8s Time] [2022-01-18 06:14:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76061 states. [2022-01-18 06:15:00,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76061 to 61453. [2022-01-18 06:15:00,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61453 states, 61452 states have (on average 2.52875414958016) internal successors, (155397), 61452 states have internal predecessors, (155397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61453 states to 61453 states and 155397 transitions. [2022-01-18 06:15:01,087 INFO L78 Accepts]: Start accepts. Automaton has 61453 states and 155397 transitions. Word has length 59 [2022-01-18 06:15:01,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:15:01,087 INFO L470 AbstractCegarLoop]: Abstraction has 61453 states and 155397 transitions. [2022-01-18 06:15:01,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.372093023255814) internal successors, (145), 42 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:01,087 INFO L276 IsEmpty]: Start isEmpty. Operand 61453 states and 155397 transitions. [2022-01-18 06:15:01,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:15:01,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:15:01,131 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:15:01,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-01-18 06:15:01,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-01-18 06:15:01,332 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:15:01,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:15:01,332 INFO L85 PathProgramCache]: Analyzing trace with hash 454482355, now seen corresponding path program 77 times [2022-01-18 06:15:01,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:15:01,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238145986] [2022-01-18 06:15:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:15:01,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:15:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:15:01,683 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:01,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:15:01,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238145986] [2022-01-18 06:15:01,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238145986] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:15:01,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074297084] [2022-01-18 06:15:01,683 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:15:01,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:15:01,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:15:01,684 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:15:01,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-01-18 06:15:01,713 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-01-18 06:15:01,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:15:01,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 06:15:01,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:15:02,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:02,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:02,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:02,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:02,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:02,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:02,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:02,967 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 21 disjoint index pairs (out of 91 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 35 [2022-01-18 06:15:02,992 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:02,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:15:04,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:04,588 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:15:04,588 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 63 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 372 [2022-01-18 06:15:05,549 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:05,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074297084] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:15:05,549 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:15:05,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 47 [2022-01-18 06:15:05,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954951227] [2022-01-18 06:15:05,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:15:05,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-18 06:15:05,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:15:05,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-18 06:15:05,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=1829, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 06:15:05,550 INFO L87 Difference]: Start difference. First operand 61453 states and 155397 transitions. Second operand has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 47 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:14,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:15:14,788 INFO L93 Difference]: Finished difference Result 93741 states and 237570 transitions. [2022-01-18 06:15:14,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-18 06:15:14,788 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 47 states have internal predecessors, (157), 0 states have call successors, (0), 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 59 [2022-01-18 06:15:14,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:15:14,991 INFO L225 Difference]: With dead ends: 93741 [2022-01-18 06:15:14,991 INFO L226 Difference]: Without dead ends: 92977 [2022-01-18 06:15:14,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6599 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=2969, Invalid=19083, Unknown=0, NotChecked=0, Total=22052 [2022-01-18 06:15:14,992 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 1051 mSDsluCounter, 4398 mSDsCounter, 0 mSdLazyCounter, 3594 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 5252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 3594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1387 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:15:14,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 3101 Invalid, 5252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 3594 Invalid, 0 Unknown, 1387 Unchecked, 2.1s Time] [2022-01-18 06:15:15,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92977 states. [2022-01-18 06:15:16,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92977 to 62437. [2022-01-18 06:15:16,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62437 states, 62436 states have (on average 2.5194278941636234) internal successors, (157303), 62436 states have internal predecessors, (157303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:16,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62437 states to 62437 states and 157303 transitions. [2022-01-18 06:15:16,602 INFO L78 Accepts]: Start accepts. Automaton has 62437 states and 157303 transitions. Word has length 59 [2022-01-18 06:15:16,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:15:16,602 INFO L470 AbstractCegarLoop]: Abstraction has 62437 states and 157303 transitions. [2022-01-18 06:15:16,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 47 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:16,603 INFO L276 IsEmpty]: Start isEmpty. Operand 62437 states and 157303 transitions. [2022-01-18 06:15:16,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:15:16,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:15:16,648 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:15:16,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-01-18 06:15:16,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:15:16,849 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:15:16,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:15:16,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1982528589, now seen corresponding path program 78 times [2022-01-18 06:15:16,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:15:16,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924270415] [2022-01-18 06:15:16,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:15:16,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:15:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:15:17,358 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:17,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:15:17,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924270415] [2022-01-18 06:15:17,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924270415] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:15:17,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258904903] [2022-01-18 06:15:17,358 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:15:17,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:15:17,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:15:17,359 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:15:17,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-01-18 06:15:17,389 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-01-18 06:15:17,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:15:17,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 06:15:17,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:15:18,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,966 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:18,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:18,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:18,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:18,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:18,984 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:18,985 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:18,985 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 44 [2022-01-18 06:15:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:19,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:15:20,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:20,722 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:15:20,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 63 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 126 treesize of output 362 [2022-01-18 06:15:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:21,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258904903] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:15:21,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:15:21,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 45 [2022-01-18 06:15:21,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622186270] [2022-01-18 06:15:21,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:15:21,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 06:15:21,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:15:21,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 06:15:21,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=1677, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 06:15:21,182 INFO L87 Difference]: Start difference. First operand 62437 states and 157303 transitions. Second operand has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 45 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:40,434 WARN L228 SmtUtils]: Spent 8.29s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 06:16:05,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:16:05,693 INFO L93 Difference]: Finished difference Result 69941 states and 175563 transitions. [2022-01-18 06:16:05,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 06:16:05,693 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 45 states have internal predecessors, (146), 0 states have call successors, (0), 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 59 [2022-01-18 06:16:05,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:16:05,817 INFO L225 Difference]: With dead ends: 69941 [2022-01-18 06:16:05,817 INFO L226 Difference]: Without dead ends: 69913 [2022-01-18 06:16:05,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 115 SyntacticMatches, 3 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4328 ImplicationChecksByTransitivity, 45.4s TimeCoverageRelationStatistics Valid=1915, Invalid=12121, Unknown=6, NotChecked=0, Total=14042 [2022-01-18 06:16:05,818 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 589 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 3272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2503 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:16:05,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 1144 Invalid, 3272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 713 Invalid, 0 Unknown, 2503 Unchecked, 0.3s Time] [2022-01-18 06:16:05,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69913 states. [2022-01-18 06:16:06,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69913 to 63129. [2022-01-18 06:16:06,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63129 states, 63128 states have (on average 2.5199752883031303) internal successors, (159081), 63128 states have internal predecessors, (159081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:07,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63129 states to 63129 states and 159081 transitions. [2022-01-18 06:16:07,189 INFO L78 Accepts]: Start accepts. Automaton has 63129 states and 159081 transitions. Word has length 59 [2022-01-18 06:16:07,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:16:07,190 INFO L470 AbstractCegarLoop]: Abstraction has 63129 states and 159081 transitions. [2022-01-18 06:16:07,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 45 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:07,191 INFO L276 IsEmpty]: Start isEmpty. Operand 63129 states and 159081 transitions. [2022-01-18 06:16:07,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:16:07,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:16:07,241 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:16:07,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-01-18 06:16:07,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:16:07,442 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:16:07,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:16:07,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1940006323, now seen corresponding path program 79 times [2022-01-18 06:16:07,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:16:07,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703826848] [2022-01-18 06:16:07,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:16:07,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:16:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:16:07,950 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:07,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:16:07,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703826848] [2022-01-18 06:16:07,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703826848] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:16:07,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690415930] [2022-01-18 06:16:07,951 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:16:07,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:16:07,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:16:07,952 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:16:07,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-01-18 06:16:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:16:07,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:16:07,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:16:09,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:09,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:09,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:09,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:09,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:09,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:09,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:09,271 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:16:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:09,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:16:10,859 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:16:10,859 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:16:12,342 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:12,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690415930] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:16:12,343 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:16:12,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 45 [2022-01-18 06:16:12,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761508942] [2022-01-18 06:16:12,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:16:12,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 06:16:12,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:16:12,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 06:16:12,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=1774, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 06:16:12,344 INFO L87 Difference]: Start difference. First operand 63129 states and 159081 transitions. Second operand has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 45 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:20,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:16:20,696 INFO L93 Difference]: Finished difference Result 144919 states and 356318 transitions. [2022-01-18 06:16:20,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-01-18 06:16:20,696 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 45 states have internal predecessors, (145), 0 states have call successors, (0), 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 59 [2022-01-18 06:16:20,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:16:21,037 INFO L225 Difference]: With dead ends: 144919 [2022-01-18 06:16:21,037 INFO L226 Difference]: Without dead ends: 144783 [2022-01-18 06:16:21,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13528 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=3974, Invalid=32698, Unknown=0, NotChecked=0, Total=36672 [2022-01-18 06:16:21,038 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 992 mSDsluCounter, 2811 mSDsCounter, 0 mSdLazyCounter, 2613 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 2070 SdHoareTripleChecker+Invalid, 3937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1114 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 06:16:21,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 2070 Invalid, 3937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2613 Invalid, 0 Unknown, 1114 Unchecked, 1.7s Time] [2022-01-18 06:16:21,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144783 states. [2022-01-18 06:16:23,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144783 to 92615. [2022-01-18 06:16:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92615 states, 92614 states have (on average 2.492420152460751) internal successors, (230833), 92614 states have internal predecessors, (230833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:23,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92615 states to 92615 states and 230833 transitions. [2022-01-18 06:16:23,869 INFO L78 Accepts]: Start accepts. Automaton has 92615 states and 230833 transitions. Word has length 59 [2022-01-18 06:16:23,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:16:23,869 INFO L470 AbstractCegarLoop]: Abstraction has 92615 states and 230833 transitions. [2022-01-18 06:16:23,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 45 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:23,870 INFO L276 IsEmpty]: Start isEmpty. Operand 92615 states and 230833 transitions. [2022-01-18 06:16:23,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:16:23,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:16:23,964 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:16:23,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-01-18 06:16:24,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2022-01-18 06:16:24,186 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:16:24,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:16:24,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1672226739, now seen corresponding path program 80 times [2022-01-18 06:16:24,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:16:24,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229277644] [2022-01-18 06:16:24,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:16:24,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:16:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:16:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:24,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:16:24,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229277644] [2022-01-18 06:16:24,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229277644] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:16:24,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036112680] [2022-01-18 06:16:24,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:16:24,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:16:24,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:16:24,518 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:16:24,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-01-18 06:16:24,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:16:24,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:16:24,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:16:24,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:16:25,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,849 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:25,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:25,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,864 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:25,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:25,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:25,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:25,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:25,871 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:16:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:25,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:16:27,490 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:16:27,491 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:16:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 15 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:28,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036112680] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:16:28,861 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:16:28,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 43 [2022-01-18 06:16:28,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024636298] [2022-01-18 06:16:28,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:16:28,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-18 06:16:28,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:16:28,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-18 06:16:28,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=1581, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 06:16:28,862 INFO L87 Difference]: Start difference. First operand 92615 states and 230833 transitions. Second operand has 44 states, 44 states have (on average 3.2954545454545454) internal successors, (145), 43 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:33,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:16:33,512 INFO L93 Difference]: Finished difference Result 116147 states and 290044 transitions. [2022-01-18 06:16:33,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-18 06:16:33,513 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.2954545454545454) internal successors, (145), 43 states have internal predecessors, (145), 0 states have call successors, (0), 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 59 [2022-01-18 06:16:33,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:16:33,827 INFO L225 Difference]: With dead ends: 116147 [2022-01-18 06:16:33,827 INFO L226 Difference]: Without dead ends: 115315 [2022-01-18 06:16:33,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 89 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3976 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1650, Invalid=10340, Unknown=0, NotChecked=0, Total=11990 [2022-01-18 06:16:33,828 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 993 mSDsluCounter, 3170 mSDsCounter, 0 mSdLazyCounter, 2767 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 2285 SdHoareTripleChecker+Invalid, 3340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 2767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 06:16:33,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [993 Valid, 2285 Invalid, 3340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 2767 Invalid, 0 Unknown, 261 Unchecked, 1.7s Time] [2022-01-18 06:16:34,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115315 states. [2022-01-18 06:16:36,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115315 to 94687. [2022-01-18 06:16:36,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94687 states, 94686 states have (on average 2.4933675516971885) internal successors, (236087), 94686 states have internal predecessors, (236087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:36,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94687 states to 94687 states and 236087 transitions. [2022-01-18 06:16:36,445 INFO L78 Accepts]: Start accepts. Automaton has 94687 states and 236087 transitions. Word has length 59 [2022-01-18 06:16:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:16:36,445 INFO L470 AbstractCegarLoop]: Abstraction has 94687 states and 236087 transitions. [2022-01-18 06:16:36,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.2954545454545454) internal successors, (145), 43 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:36,446 INFO L276 IsEmpty]: Start isEmpty. Operand 94687 states and 236087 transitions. [2022-01-18 06:16:36,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:16:36,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:16:36,519 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:16:36,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-01-18 06:16:36,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:16:36,720 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:16:36,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:16:36,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1842098253, now seen corresponding path program 81 times [2022-01-18 06:16:36,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:16:36,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846407248] [2022-01-18 06:16:36,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:16:36,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:16:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:16:37,096 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:37,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:16:37,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846407248] [2022-01-18 06:16:37,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846407248] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:16:37,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043171615] [2022-01-18 06:16:37,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:16:37,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:16:37,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:16:37,098 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:16:37,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-01-18 06:16:37,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-01-18 06:16:37,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:16:37,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:16:37,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:16:38,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:38,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:38,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:38,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:38,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:38,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:38,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:38,588 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:16:38,603 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:38,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:16:40,243 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:16:40,243 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:16:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:42,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043171615] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:16:42,176 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:16:42,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 45 [2022-01-18 06:16:42,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803076161] [2022-01-18 06:16:42,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:16:42,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 06:16:42,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:16:42,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 06:16:42,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=1766, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 06:16:42,177 INFO L87 Difference]: Start difference. First operand 94687 states and 236087 transitions. Second operand has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 45 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:46,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:16:46,677 INFO L93 Difference]: Finished difference Result 130113 states and 326485 transitions. [2022-01-18 06:16:46,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 06:16:46,678 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 45 states have internal predecessors, (145), 0 states have call successors, (0), 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 59 [2022-01-18 06:16:46,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:16:46,969 INFO L225 Difference]: With dead ends: 130113 [2022-01-18 06:16:46,970 INFO L226 Difference]: Without dead ends: 129873 [2022-01-18 06:16:46,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4269 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1933, Invalid=11873, Unknown=0, NotChecked=0, Total=13806 [2022-01-18 06:16:46,970 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 537 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 2449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 391 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:16:46,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 1403 Invalid, 2449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1937 Invalid, 0 Unknown, 391 Unchecked, 1.2s Time] [2022-01-18 06:16:47,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129873 states. [2022-01-18 06:16:49,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129873 to 96805. [2022-01-18 06:16:49,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96805 states, 96804 states have (on average 2.4945353497789347) internal successors, (241481), 96804 states have internal predecessors, (241481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:49,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96805 states to 96805 states and 241481 transitions. [2022-01-18 06:16:49,651 INFO L78 Accepts]: Start accepts. Automaton has 96805 states and 241481 transitions. Word has length 59 [2022-01-18 06:16:49,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:16:49,651 INFO L470 AbstractCegarLoop]: Abstraction has 96805 states and 241481 transitions. [2022-01-18 06:16:49,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 45 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 96805 states and 241481 transitions. [2022-01-18 06:16:49,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:16:49,731 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:16:49,731 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:16:49,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-01-18 06:16:49,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:16:49,932 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:16:49,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:16:49,932 INFO L85 PathProgramCache]: Analyzing trace with hash -196176637, now seen corresponding path program 82 times [2022-01-18 06:16:49,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:16:49,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907388033] [2022-01-18 06:16:49,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:16:49,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:16:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:16:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:50,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:16:50,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907388033] [2022-01-18 06:16:50,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907388033] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:16:50,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781419448] [2022-01-18 06:16:50,364 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:16:50,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:16:50,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:16:50,365 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:16:50,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-01-18 06:16:50,396 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:16:50,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:16:50,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:16:50,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:16:51,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:51,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:51,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:51,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:51,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:51,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:16:51,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:16:51,888 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:16:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:51,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:16:53,423 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:16:53,423 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:16:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:55,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781419448] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:16:55,067 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:16:55,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 45 [2022-01-18 06:16:55,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076277813] [2022-01-18 06:16:55,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:16:55,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 06:16:55,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:16:55,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 06:16:55,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=1766, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 06:16:55,068 INFO L87 Difference]: Start difference. First operand 96805 states and 241481 transitions. Second operand has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 45 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:59,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:16:59,733 INFO L93 Difference]: Finished difference Result 124231 states and 310489 transitions. [2022-01-18 06:16:59,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 06:16:59,733 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 45 states have internal predecessors, (145), 0 states have call successors, (0), 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 59 [2022-01-18 06:16:59,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:17:00,042 INFO L225 Difference]: With dead ends: 124231 [2022-01-18 06:17:00,043 INFO L226 Difference]: Without dead ends: 124035 [2022-01-18 06:17:00,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4193 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1832, Invalid=11508, Unknown=0, NotChecked=0, Total=13340 [2022-01-18 06:17:00,044 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 600 mSDsluCounter, 3258 mSDsCounter, 0 mSdLazyCounter, 2605 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 3578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 871 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:17:00,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 2290 Invalid, 3578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2605 Invalid, 0 Unknown, 871 Unchecked, 1.5s Time] [2022-01-18 06:17:00,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124035 states. [2022-01-18 06:17:02,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124035 to 91531. [2022-01-18 06:17:02,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91531 states, 91530 states have (on average 2.4941658472631922) internal successors, (228291), 91530 states have internal predecessors, (228291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91531 states to 91531 states and 228291 transitions. [2022-01-18 06:17:02,445 INFO L78 Accepts]: Start accepts. Automaton has 91531 states and 228291 transitions. Word has length 59 [2022-01-18 06:17:02,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:17:02,445 INFO L470 AbstractCegarLoop]: Abstraction has 91531 states and 228291 transitions. [2022-01-18 06:17:02,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 45 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:02,445 INFO L276 IsEmpty]: Start isEmpty. Operand 91531 states and 228291 transitions. [2022-01-18 06:17:02,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:17:02,520 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:17:02,520 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:17:02,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-01-18 06:17:02,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-01-18 06:17:02,721 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:17:02,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:17:02,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1246017101, now seen corresponding path program 83 times [2022-01-18 06:17:02,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:17:02,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621154918] [2022-01-18 06:17:02,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:17:02,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:17:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:17:03,136 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:17:03,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:17:03,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621154918] [2022-01-18 06:17:03,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621154918] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:17:03,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637057771] [2022-01-18 06:17:03,137 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:17:03,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:17:03,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:17:03,138 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:17:03,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-01-18 06:17:03,175 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-01-18 06:17:03,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:17:03,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 06:17:03,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:17:04,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:04,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,792 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:04,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:04,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:04,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:04,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:04,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:04,806 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 42 [2022-01-18 06:17:04,821 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:17:04,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:17:05,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,724 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,724 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,724 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:05,835 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:17:05,836 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 63 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 372 [2022-01-18 06:17:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:17:06,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637057771] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:17:06,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:17:06,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 44 [2022-01-18 06:17:06,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528143387] [2022-01-18 06:17:06,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:17:06,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 06:17:06,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:17:06,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 06:17:06,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=1657, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:17:06,895 INFO L87 Difference]: Start difference. First operand 91531 states and 228291 transitions. Second operand has 45 states, 45 states have (on average 3.2444444444444445) internal successors, (146), 44 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:11,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:17:11,085 INFO L93 Difference]: Finished difference Result 113227 states and 282115 transitions. [2022-01-18 06:17:11,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 06:17:11,085 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.2444444444444445) internal successors, (146), 44 states have internal predecessors, (146), 0 states have call successors, (0), 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 59 [2022-01-18 06:17:11,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:17:11,328 INFO L225 Difference]: With dead ends: 113227 [2022-01-18 06:17:11,328 INFO L226 Difference]: Without dead ends: 112439 [2022-01-18 06:17:11,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3202 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1334, Invalid=8968, Unknown=0, NotChecked=0, Total=10302 [2022-01-18 06:17:11,329 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 728 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 2616 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 3037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 2616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 06:17:11,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 1950 Invalid, 3037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 2616 Invalid, 0 Unknown, 170 Unchecked, 1.7s Time] [2022-01-18 06:17:11,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112439 states. [2022-01-18 06:17:13,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112439 to 99503. [2022-01-18 06:17:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99503 states, 99502 states have (on average 2.493045365922293) internal successors, (248063), 99502 states have internal predecessors, (248063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:13,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99503 states to 99503 states and 248063 transitions. [2022-01-18 06:17:13,727 INFO L78 Accepts]: Start accepts. Automaton has 99503 states and 248063 transitions. Word has length 59 [2022-01-18 06:17:13,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:17:13,727 INFO L470 AbstractCegarLoop]: Abstraction has 99503 states and 248063 transitions. [2022-01-18 06:17:13,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.2444444444444445) internal successors, (146), 44 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:13,728 INFO L276 IsEmpty]: Start isEmpty. Operand 99503 states and 248063 transitions. [2022-01-18 06:17:14,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:17:14,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:17:14,201 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:17:14,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-01-18 06:17:14,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:17:14,421 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:17:14,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:17:14,421 INFO L85 PathProgramCache]: Analyzing trace with hash -112976461, now seen corresponding path program 84 times [2022-01-18 06:17:14,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:17:14,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721103718] [2022-01-18 06:17:14,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:17:14,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:17:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:17:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:17:14,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:17:14,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721103718] [2022-01-18 06:17:14,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721103718] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:17:14,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343794269] [2022-01-18 06:17:14,783 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:17:14,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:17:14,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:17:14,783 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:17:14,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-01-18 06:17:14,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-01-18 06:17:14,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:17:14,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:17:14,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:17:15,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:15,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:15,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:15,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:15,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:15,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:16,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:16,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:16,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:16,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:16,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:16,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:16,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:16,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:17:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:17:16,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:17:17,840 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:17:17,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:17:20,199 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:17:20,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343794269] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:17:20,199 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:17:20,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 44 [2022-01-18 06:17:20,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143482048] [2022-01-18 06:17:20,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:17:20,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 06:17:20,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:17:20,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 06:17:20,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=1673, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:17:20,205 INFO L87 Difference]: Start difference. First operand 99503 states and 248063 transitions. Second operand has 45 states, 45 states have (on average 3.2222222222222223) internal successors, (145), 44 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:26,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:17:26,954 INFO L93 Difference]: Finished difference Result 155713 states and 384598 transitions. [2022-01-18 06:17:26,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-01-18 06:17:26,954 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.2222222222222223) internal successors, (145), 44 states have internal predecessors, (145), 0 states have call successors, (0), 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 59 [2022-01-18 06:17:26,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:17:27,534 INFO L225 Difference]: With dead ends: 155713 [2022-01-18 06:17:27,534 INFO L226 Difference]: Without dead ends: 155245 [2022-01-18 06:17:27,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7509 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2771, Invalid=19579, Unknown=0, NotChecked=0, Total=22350 [2022-01-18 06:17:27,535 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 715 mSDsluCounter, 3411 mSDsCounter, 0 mSdLazyCounter, 3355 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 2441 SdHoareTripleChecker+Invalid, 4207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 3355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 690 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:17:27,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [715 Valid, 2441 Invalid, 4207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 3355 Invalid, 0 Unknown, 690 Unchecked, 2.1s Time] [2022-01-18 06:17:27,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155245 states. [2022-01-18 06:17:30,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155245 to 98525. [2022-01-18 06:17:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98525 states, 98524 states have (on average 2.4931691770533067) internal successors, (245637), 98524 states have internal predecessors, (245637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:30,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98525 states to 98525 states and 245637 transitions. [2022-01-18 06:17:30,415 INFO L78 Accepts]: Start accepts. Automaton has 98525 states and 245637 transitions. Word has length 59 [2022-01-18 06:17:30,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:17:30,415 INFO L470 AbstractCegarLoop]: Abstraction has 98525 states and 245637 transitions. [2022-01-18 06:17:30,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.2222222222222223) internal successors, (145), 44 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:30,415 INFO L276 IsEmpty]: Start isEmpty. Operand 98525 states and 245637 transitions. [2022-01-18 06:17:30,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:17:30,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:17:30,497 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:17:30,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-01-18 06:17:30,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:17:30,698 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:17:30,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:17:30,699 INFO L85 PathProgramCache]: Analyzing trace with hash -465374797, now seen corresponding path program 85 times [2022-01-18 06:17:30,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:17:30,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983753707] [2022-01-18 06:17:30,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:17:30,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:17:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:17:31,075 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:17:31,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:17:31,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983753707] [2022-01-18 06:17:31,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983753707] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:17:31,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941905756] [2022-01-18 06:17:31,076 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:17:31,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:17:31,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:17:31,077 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:17:31,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-01-18 06:17:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:17:31,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:17:31,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:17:32,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:32,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:32,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:32,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:32,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,304 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:32,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:32,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:32,306 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:17:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:17:32,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:17:34,170 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:17:34,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:17:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:17:35,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941905756] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:17:35,782 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:17:35,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 45 [2022-01-18 06:17:35,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995210112] [2022-01-18 06:17:35,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:17:35,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 06:17:35,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:17:35,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 06:17:35,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=1763, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 06:17:35,783 INFO L87 Difference]: Start difference. First operand 98525 states and 245637 transitions. Second operand has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 45 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:41,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:17:41,529 INFO L93 Difference]: Finished difference Result 129475 states and 322961 transitions. [2022-01-18 06:17:41,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-18 06:17:41,529 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 45 states have internal predecessors, (145), 0 states have call successors, (0), 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 59 [2022-01-18 06:17:41,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:17:41,846 INFO L225 Difference]: With dead ends: 129475 [2022-01-18 06:17:41,847 INFO L226 Difference]: Without dead ends: 129003 [2022-01-18 06:17:41,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5754 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2341, Invalid=15481, Unknown=0, NotChecked=0, Total=17822 [2022-01-18 06:17:41,848 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 593 mSDsluCounter, 3136 mSDsCounter, 0 mSdLazyCounter, 2989 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 4044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 939 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:17:41,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [593 Valid, 2223 Invalid, 4044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2989 Invalid, 0 Unknown, 939 Unchecked, 1.8s Time] [2022-01-18 06:17:41,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129003 states. [2022-01-18 06:17:44,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129003 to 99389. [2022-01-18 06:17:44,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99389 states, 99388 states have (on average 2.494033484927758) internal successors, (247877), 99388 states have internal predecessors, (247877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:44,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99389 states to 99389 states and 247877 transitions. [2022-01-18 06:17:44,507 INFO L78 Accepts]: Start accepts. Automaton has 99389 states and 247877 transitions. Word has length 59 [2022-01-18 06:17:44,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:17:44,507 INFO L470 AbstractCegarLoop]: Abstraction has 99389 states and 247877 transitions. [2022-01-18 06:17:44,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 45 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:44,507 INFO L276 IsEmpty]: Start isEmpty. Operand 99389 states and 247877 transitions. [2022-01-18 06:17:44,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:17:44,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:17:44,587 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:17:44,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-01-18 06:17:44,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:17:44,788 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:17:44,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:17:44,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1675715661, now seen corresponding path program 86 times [2022-01-18 06:17:44,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:17:44,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249740583] [2022-01-18 06:17:44,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:17:44,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:17:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:17:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:17:45,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:17:45,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249740583] [2022-01-18 06:17:45,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249740583] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:17:45,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747922911] [2022-01-18 06:17:45,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:17:45,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:17:45,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:17:45,184 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:17:45,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-01-18 06:17:45,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:17:45,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:17:45,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:17:45,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:17:46,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:46,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:46,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:46,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:46,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:46,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:46,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:46,735 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:17:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:17:46,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:17:48,256 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:17:48,257 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:17:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 34 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:17:49,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747922911] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:17:49,828 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:17:49,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 45 [2022-01-18 06:17:49,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034159684] [2022-01-18 06:17:49,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:17:49,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 06:17:49,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:17:49,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 06:17:49,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=1756, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 06:17:49,829 INFO L87 Difference]: Start difference. First operand 99389 states and 247877 transitions. Second operand has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 45 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:53,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:17:53,530 INFO L93 Difference]: Finished difference Result 121921 states and 303473 transitions. [2022-01-18 06:17:53,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 06:17:53,531 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 45 states have internal predecessors, (145), 0 states have call successors, (0), 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 59 [2022-01-18 06:17:53,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:17:53,810 INFO L225 Difference]: With dead ends: 121921 [2022-01-18 06:17:53,811 INFO L226 Difference]: Without dead ends: 121857 [2022-01-18 06:17:53,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3423 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1483, Invalid=10073, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 06:17:53,811 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 509 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 1818 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 2685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 768 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:17:53,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 1435 Invalid, 2685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1818 Invalid, 0 Unknown, 768 Unchecked, 1.1s Time] [2022-01-18 06:17:53,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121857 states. [2022-01-18 06:17:55,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121857 to 100241. [2022-01-18 06:17:56,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100241 states, 100240 states have (on average 2.4940642458100557) internal successors, (250005), 100240 states have internal predecessors, (250005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:56,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100241 states to 100241 states and 250005 transitions. [2022-01-18 06:17:56,664 INFO L78 Accepts]: Start accepts. Automaton has 100241 states and 250005 transitions. Word has length 59 [2022-01-18 06:17:56,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:17:56,664 INFO L470 AbstractCegarLoop]: Abstraction has 100241 states and 250005 transitions. [2022-01-18 06:17:56,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 45 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:56,665 INFO L276 IsEmpty]: Start isEmpty. Operand 100241 states and 250005 transitions. [2022-01-18 06:17:56,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:17:56,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:17:56,747 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:17:56,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-01-18 06:17:56,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2022-01-18 06:17:56,947 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:17:56,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:17:56,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1071456173, now seen corresponding path program 87 times [2022-01-18 06:17:56,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:17:56,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370927047] [2022-01-18 06:17:56,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:17:56,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:17:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:17:57,261 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 117 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 06:17:57,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:17:57,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370927047] [2022-01-18 06:17:57,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370927047] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:17:57,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924585470] [2022-01-18 06:17:57,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:17:57,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:17:57,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:17:57,262 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:17:57,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-01-18 06:17:57,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-01-18 06:17:57,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:17:57,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:17:57,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:17:58,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:58,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:58,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:58,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:58,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:17:58,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:17:58,416 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:17:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:17:58,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:18:00,172 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:18:00,172 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:18:01,537 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 17 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:01,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924585470] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:18:01,538 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:18:01,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 42 [2022-01-18 06:18:01,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213169545] [2022-01-18 06:18:01,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:18:01,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 06:18:01,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:18:01,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 06:18:01,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1537, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 06:18:01,539 INFO L87 Difference]: Start difference. First operand 100241 states and 250005 transitions. Second operand has 43 states, 43 states have (on average 3.186046511627907) internal successors, (137), 42 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:18:07,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:18:07,454 INFO L93 Difference]: Finished difference Result 183741 states and 457388 transitions. [2022-01-18 06:18:07,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-01-18 06:18:07,455 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.186046511627907) internal successors, (137), 42 states have internal predecessors, (137), 0 states have call successors, (0), 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 59 [2022-01-18 06:18:07,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:18:07,876 INFO L225 Difference]: With dead ends: 183741 [2022-01-18 06:18:07,876 INFO L226 Difference]: Without dead ends: 183593 [2022-01-18 06:18:07,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 90 SyntacticMatches, 3 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5835 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2313, Invalid=15243, Unknown=0, NotChecked=0, Total=17556 [2022-01-18 06:18:07,877 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 850 mSDsluCounter, 2428 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 3786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1103 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:18:07,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 1695 Invalid, 3786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2504 Invalid, 0 Unknown, 1103 Unchecked, 1.6s Time] [2022-01-18 06:18:08,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183593 states. [2022-01-18 06:18:10,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183593 to 106687. [2022-01-18 06:18:10,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106687 states, 106686 states have (on average 2.4898393416193314) internal successors, (265631), 106686 states have internal predecessors, (265631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:18:11,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106687 states to 106687 states and 265631 transitions. [2022-01-18 06:18:11,244 INFO L78 Accepts]: Start accepts. Automaton has 106687 states and 265631 transitions. Word has length 59 [2022-01-18 06:18:11,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:18:11,244 INFO L470 AbstractCegarLoop]: Abstraction has 106687 states and 265631 transitions. [2022-01-18 06:18:11,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.186046511627907) internal successors, (137), 42 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:18:11,244 INFO L276 IsEmpty]: Start isEmpty. Operand 106687 states and 265631 transitions. [2022-01-18 06:18:11,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:18:11,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:18:11,322 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:18:11,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-01-18 06:18:11,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:18:11,527 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:18:11,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:18:11,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1082232397, now seen corresponding path program 88 times [2022-01-18 06:18:11,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:18:11,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127526728] [2022-01-18 06:18:11,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:18:11,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:18:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:18:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:11,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:18:11,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127526728] [2022-01-18 06:18:11,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127526728] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:18:11,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766705595] [2022-01-18 06:18:11,901 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:18:11,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:18:11,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:18:11,902 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:18:11,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-01-18 06:18:11,931 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:18:11,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:18:11,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:18:11,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:18:13,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:13,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:13,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:13,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:13,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:13,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:13,513 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:18:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:13,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:18:15,021 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:18:15,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:18:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 12 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:16,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766705595] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:18:16,673 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:18:16,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 44 [2022-01-18 06:18:16,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138599993] [2022-01-18 06:18:16,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:18:16,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 06:18:16,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:18:16,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 06:18:16,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=1684, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:18:16,675 INFO L87 Difference]: Start difference. First operand 106687 states and 265631 transitions. Second operand has 45 states, 45 states have (on average 3.1333333333333333) internal successors, (141), 44 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:18:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:18:21,036 INFO L93 Difference]: Finished difference Result 146417 states and 366995 transitions. [2022-01-18 06:18:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 06:18:21,036 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.1333333333333333) internal successors, (141), 44 states have internal predecessors, (141), 0 states have call successors, (0), 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 59 [2022-01-18 06:18:21,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:18:21,358 INFO L225 Difference]: With dead ends: 146417 [2022-01-18 06:18:21,359 INFO L226 Difference]: Without dead ends: 145817 [2022-01-18 06:18:21,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3876 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1773, Invalid=10883, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 06:18:21,360 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 787 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 3778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1268 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:18:21,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 1760 Invalid, 3778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 2321 Invalid, 0 Unknown, 1268 Unchecked, 1.3s Time] [2022-01-18 06:18:21,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145817 states. [2022-01-18 06:18:23,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145817 to 52025. [2022-01-18 06:18:23,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52025 states, 52024 states have (on average 2.489178071659234) internal successors, (129497), 52024 states have internal predecessors, (129497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:18:23,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52025 states to 52025 states and 129497 transitions. [2022-01-18 06:18:23,456 INFO L78 Accepts]: Start accepts. Automaton has 52025 states and 129497 transitions. Word has length 59 [2022-01-18 06:18:23,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:18:23,456 INFO L470 AbstractCegarLoop]: Abstraction has 52025 states and 129497 transitions. [2022-01-18 06:18:23,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.1333333333333333) internal successors, (141), 44 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:18:23,456 INFO L276 IsEmpty]: Start isEmpty. Operand 52025 states and 129497 transitions. [2022-01-18 06:18:23,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:18:23,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:18:23,499 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:18:23,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-01-18 06:18:23,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:18:23,699 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:18:23,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:18:23,700 INFO L85 PathProgramCache]: Analyzing trace with hash 294491059, now seen corresponding path program 89 times [2022-01-18 06:18:23,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:18:23,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708258448] [2022-01-18 06:18:23,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:18:23,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:18:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:18:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:24,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:18:24,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708258448] [2022-01-18 06:18:24,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708258448] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:18:24,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171320431] [2022-01-18 06:18:24,114 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:18:24,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:18:24,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:18:24,114 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:18:24,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-01-18 06:18:24,143 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-01-18 06:18:24,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:18:24,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-18 06:18:24,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:18:25,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:25,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:25,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:25,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:25,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,630 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:25,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:25,631 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2022-01-18 06:18:25,647 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:25,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:18:26,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,792 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,792 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,793 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,804 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,804 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,808 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,808 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,808 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,812 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,812 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,812 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,820 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,821 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,821 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,822 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,822 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,822 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:26,941 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:18:26,941 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 63 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 372 [2022-01-18 06:18:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:27,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171320431] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:18:27,608 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:18:27,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 45 [2022-01-18 06:18:27,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104300969] [2022-01-18 06:18:27,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:18:27,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 06:18:27,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:18:27,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 06:18:27,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1609, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 06:18:27,609 INFO L87 Difference]: Start difference. First operand 52025 states and 129497 transitions. Second operand has 46 states, 46 states have (on average 3.0869565217391304) internal successors, (142), 45 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:18:38,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:18:38,558 INFO L93 Difference]: Finished difference Result 92995 states and 231712 transitions. [2022-01-18 06:18:38,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-01-18 06:18:38,558 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.0869565217391304) internal successors, (142), 45 states have internal predecessors, (142), 0 states have call successors, (0), 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 59 [2022-01-18 06:18:38,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:18:38,720 INFO L225 Difference]: With dead ends: 92995 [2022-01-18 06:18:38,720 INFO L226 Difference]: Without dead ends: 92071 [2022-01-18 06:18:38,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 92 SyntacticMatches, 3 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11718 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=4583, Invalid=26569, Unknown=0, NotChecked=0, Total=31152 [2022-01-18 06:18:38,721 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 1082 mSDsluCounter, 3302 mSDsCounter, 0 mSdLazyCounter, 2839 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 2367 SdHoareTripleChecker+Invalid, 3984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 2839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 852 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:18:38,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 2367 Invalid, 3984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 2839 Invalid, 0 Unknown, 852 Unchecked, 2.2s Time] [2022-01-18 06:18:38,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92071 states. [2022-01-18 06:18:39,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92071 to 54429. [2022-01-18 06:18:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54429 states, 54428 states have (on average 2.4885904313956053) internal successors, (135449), 54428 states have internal predecessors, (135449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:18:39,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54429 states to 54429 states and 135449 transitions. [2022-01-18 06:18:39,965 INFO L78 Accepts]: Start accepts. Automaton has 54429 states and 135449 transitions. Word has length 59 [2022-01-18 06:18:39,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:18:39,965 INFO L470 AbstractCegarLoop]: Abstraction has 54429 states and 135449 transitions. [2022-01-18 06:18:39,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.0869565217391304) internal successors, (142), 45 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:18:39,965 INFO L276 IsEmpty]: Start isEmpty. Operand 54429 states and 135449 transitions. [2022-01-18 06:18:40,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:18:40,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:18:40,008 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:18:40,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-01-18 06:18:40,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:18:40,209 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:18:40,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:18:40,209 INFO L85 PathProgramCache]: Analyzing trace with hash -915849805, now seen corresponding path program 90 times [2022-01-18 06:18:40,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:18:40,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915155224] [2022-01-18 06:18:40,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:18:40,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:18:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:18:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:40,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:18:40,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915155224] [2022-01-18 06:18:40,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915155224] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:18:40,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339145402] [2022-01-18 06:18:40,628 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:18:40,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:18:40,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:18:40,629 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:18:40,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-01-18 06:18:40,661 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-01-18 06:18:40,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:18:40,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:18:40,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:18:41,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:41,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:41,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:41,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:41,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:41,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:41,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:41,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:41,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:41,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:41,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:41,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:41,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:42,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:42,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:42,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:42,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:42,015 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:18:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:42,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:18:43,545 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:18:43,546 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:18:45,035 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 25 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:45,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339145402] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:18:45,036 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:18:45,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 44 [2022-01-18 06:18:45,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455077059] [2022-01-18 06:18:45,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:18:45,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 06:18:45,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:18:45,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 06:18:45,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1675, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:18:45,037 INFO L87 Difference]: Start difference. First operand 54429 states and 135449 transitions. Second operand has 45 states, 45 states have (on average 3.1333333333333333) internal successors, (141), 44 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:18:52,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:18:52,436 INFO L93 Difference]: Finished difference Result 99325 states and 247257 transitions. [2022-01-18 06:18:52,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-01-18 06:18:52,436 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.1333333333333333) internal successors, (141), 44 states have internal predecessors, (141), 0 states have call successors, (0), 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 59 [2022-01-18 06:18:52,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:18:52,639 INFO L225 Difference]: With dead ends: 99325 [2022-01-18 06:18:52,639 INFO L226 Difference]: Without dead ends: 99261 [2022-01-18 06:18:52,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9894 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=3513, Invalid=25557, Unknown=0, NotChecked=0, Total=29070 [2022-01-18 06:18:52,641 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 557 mSDsluCounter, 3170 mSDsCounter, 0 mSdLazyCounter, 3313 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 2261 SdHoareTripleChecker+Invalid, 4922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1508 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:18:52,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 2261 Invalid, 4922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3313 Invalid, 0 Unknown, 1508 Unchecked, 2.0s Time] [2022-01-18 06:18:52,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99261 states. [2022-01-18 06:18:54,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99261 to 65363. [2022-01-18 06:18:54,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65363 states, 65362 states have (on average 2.4911263425231787) internal successors, (162825), 65362 states have internal predecessors, (162825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:18:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65363 states to 65363 states and 162825 transitions. [2022-01-18 06:18:54,285 INFO L78 Accepts]: Start accepts. Automaton has 65363 states and 162825 transitions. Word has length 59 [2022-01-18 06:18:54,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:18:54,286 INFO L470 AbstractCegarLoop]: Abstraction has 65363 states and 162825 transitions. [2022-01-18 06:18:54,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.1333333333333333) internal successors, (141), 44 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:18:54,286 INFO L276 IsEmpty]: Start isEmpty. Operand 65363 states and 162825 transitions. [2022-01-18 06:18:54,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:18:54,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:18:54,334 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:18:54,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-01-18 06:18:54,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:18:54,535 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:18:54,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:18:54,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2056362061, now seen corresponding path program 91 times [2022-01-18 06:18:54,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:18:54,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946513187] [2022-01-18 06:18:54,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:18:54,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:18:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:18:54,992 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:54,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:18:54,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946513187] [2022-01-18 06:18:54,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946513187] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:18:54,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429897778] [2022-01-18 06:18:54,992 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:18:54,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:18:54,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:18:54,996 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:18:54,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-01-18 06:18:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:18:55,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:18:55,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:18:56,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:56,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:56,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:56,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:18:56,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:18:56,178 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 21 disjoint index pairs (out of 55 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:18:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:56,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:18:57,972 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:18:57,973 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:18:59,443 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 18 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:59,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429897778] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:18:59,443 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:18:59,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 43 [2022-01-18 06:18:59,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284186802] [2022-01-18 06:18:59,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:18:59,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-18 06:18:59,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:18:59,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-18 06:18:59,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1597, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 06:18:59,444 INFO L87 Difference]: Start difference. First operand 65363 states and 162825 transitions. Second operand has 44 states, 44 states have (on average 3.1136363636363638) internal successors, (137), 43 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:06,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:19:06,198 INFO L93 Difference]: Finished difference Result 88775 states and 220462 transitions. [2022-01-18 06:19:06,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-01-18 06:19:06,198 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.1136363636363638) internal successors, (137), 43 states have internal predecessors, (137), 0 states have call successors, (0), 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 59 [2022-01-18 06:19:06,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:19:06,365 INFO L225 Difference]: With dead ends: 88775 [2022-01-18 06:19:06,366 INFO L226 Difference]: Without dead ends: 88703 [2022-01-18 06:19:06,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7018 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2741, Invalid=19909, Unknown=0, NotChecked=0, Total=22650 [2022-01-18 06:19:06,367 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 566 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 4476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1262 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:19:06,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 2138 Invalid, 4476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 3101 Invalid, 0 Unknown, 1262 Unchecked, 2.0s Time] [2022-01-18 06:19:06,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88703 states. [2022-01-18 06:19:07,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88703 to 69327. [2022-01-18 06:19:07,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69327 states, 69326 states have (on average 2.488373770302628) internal successors, (172509), 69326 states have internal predecessors, (172509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69327 states to 69327 states and 172509 transitions. [2022-01-18 06:19:07,937 INFO L78 Accepts]: Start accepts. Automaton has 69327 states and 172509 transitions. Word has length 59 [2022-01-18 06:19:07,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:19:07,937 INFO L470 AbstractCegarLoop]: Abstraction has 69327 states and 172509 transitions. [2022-01-18 06:19:07,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.1136363636363638) internal successors, (137), 43 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:07,937 INFO L276 IsEmpty]: Start isEmpty. Operand 69327 states and 172509 transitions. [2022-01-18 06:19:07,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:19:07,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:19:07,989 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:19:08,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-01-18 06:19:08,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2022-01-18 06:19:08,190 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:19:08,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:19:08,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1519221331, now seen corresponding path program 92 times [2022-01-18 06:19:08,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:19:08,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630911320] [2022-01-18 06:19:08,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:19:08,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:19:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:19:08,582 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:08,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:19:08,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630911320] [2022-01-18 06:19:08,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630911320] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:19:08,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983801166] [2022-01-18 06:19:08,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:19:08,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:19:08,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:19:08,584 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:19:08,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-01-18 06:19:08,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:19:08,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:19:08,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:19:08,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:19:09,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:09,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:09,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:09,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:09,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:09,757 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 21 disjoint index pairs (out of 55 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:19:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:09,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:19:11,487 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:19:11,488 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:19:13,074 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 18 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:13,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983801166] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:19:13,074 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:19:13,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 43 [2022-01-18 06:19:13,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904660136] [2022-01-18 06:19:13,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:19:13,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-18 06:19:13,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:19:13,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-18 06:19:13,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1597, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 06:19:13,075 INFO L87 Difference]: Start difference. First operand 69327 states and 172509 transitions. Second operand has 44 states, 44 states have (on average 3.1136363636363638) internal successors, (137), 43 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:16,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:19:16,384 INFO L93 Difference]: Finished difference Result 95371 states and 237064 transitions. [2022-01-18 06:19:16,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 06:19:16,385 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.1136363636363638) internal successors, (137), 43 states have internal predecessors, (137), 0 states have call successors, (0), 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 59 [2022-01-18 06:19:16,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:19:16,581 INFO L225 Difference]: With dead ends: 95371 [2022-01-18 06:19:16,582 INFO L226 Difference]: Without dead ends: 95307 [2022-01-18 06:19:16,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 88 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2405 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1186, Invalid=7744, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 06:19:16,583 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 533 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 2717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 864 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:19:16,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 1422 Invalid, 2717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1761 Invalid, 0 Unknown, 864 Unchecked, 1.1s Time] [2022-01-18 06:19:16,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95307 states. [2022-01-18 06:19:17,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95307 to 68631. [2022-01-18 06:19:17,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68631 states, 68630 states have (on average 2.491782019524989) internal successors, (171011), 68630 states have internal predecessors, (171011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:18,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68631 states to 68631 states and 171011 transitions. [2022-01-18 06:19:18,051 INFO L78 Accepts]: Start accepts. Automaton has 68631 states and 171011 transitions. Word has length 59 [2022-01-18 06:19:18,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:19:18,051 INFO L470 AbstractCegarLoop]: Abstraction has 68631 states and 171011 transitions. [2022-01-18 06:19:18,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.1136363636363638) internal successors, (137), 43 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:18,051 INFO L276 IsEmpty]: Start isEmpty. Operand 68631 states and 171011 transitions. [2022-01-18 06:19:18,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:19:18,100 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:19:18,100 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:19:18,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-01-18 06:19:18,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-01-18 06:19:18,302 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:19:18,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:19:18,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1243068339, now seen corresponding path program 93 times [2022-01-18 06:19:18,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:19:18,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116570450] [2022-01-18 06:19:18,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:19:18,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:19:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:19:18,664 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 119 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 06:19:18,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:19:18,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116570450] [2022-01-18 06:19:18,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116570450] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:19:18,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116631794] [2022-01-18 06:19:18,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:19:18,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:19:18,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:19:18,665 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:19:18,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-01-18 06:19:18,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-01-18 06:19:18,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:19:18,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:19:18,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:19:19,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:19,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:19,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:19,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:19,775 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:19:19,790 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 13 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:19,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:19:21,517 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:19:21,517 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:19:23,492 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 12 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:23,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116631794] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:19:23,493 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:19:23,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 18] total 39 [2022-01-18 06:19:23,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691290662] [2022-01-18 06:19:23,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:19:23,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 06:19:23,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:19:23,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 06:19:23,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1294, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 06:19:23,494 INFO L87 Difference]: Start difference. First operand 68631 states and 171011 transitions. Second operand has 40 states, 40 states have (on average 3.275) internal successors, (131), 39 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:27,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:19:27,273 INFO L93 Difference]: Finished difference Result 88095 states and 219415 transitions. [2022-01-18 06:19:27,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 06:19:27,274 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.275) internal successors, (131), 39 states have internal predecessors, (131), 0 states have call successors, (0), 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 59 [2022-01-18 06:19:27,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:19:27,553 INFO L225 Difference]: With dead ends: 88095 [2022-01-18 06:19:27,553 INFO L226 Difference]: Without dead ends: 87359 [2022-01-18 06:19:27,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 89 SyntacticMatches, 7 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2627 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1198, Invalid=7732, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 06:19:27,554 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 702 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 2947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:19:27,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 1836 Invalid, 2947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 2551 Invalid, 0 Unknown, 174 Unchecked, 1.5s Time] [2022-01-18 06:19:27,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87359 states. [2022-01-18 06:19:28,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87359 to 73987. [2022-01-18 06:19:28,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73987 states, 73986 states have (on average 2.492512096883194) internal successors, (184411), 73986 states have internal predecessors, (184411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:29,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73987 states to 73987 states and 184411 transitions. [2022-01-18 06:19:29,045 INFO L78 Accepts]: Start accepts. Automaton has 73987 states and 184411 transitions. Word has length 59 [2022-01-18 06:19:29,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:19:29,045 INFO L470 AbstractCegarLoop]: Abstraction has 73987 states and 184411 transitions. [2022-01-18 06:19:29,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.275) internal successors, (131), 39 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:29,046 INFO L276 IsEmpty]: Start isEmpty. Operand 73987 states and 184411 transitions. [2022-01-18 06:19:29,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:19:29,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:19:29,098 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:19:29,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-01-18 06:19:29,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-01-18 06:19:29,299 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:19:29,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:19:29,299 INFO L85 PathProgramCache]: Analyzing trace with hash -2059574861, now seen corresponding path program 94 times [2022-01-18 06:19:29,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:19:29,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804870359] [2022-01-18 06:19:29,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:19:29,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:19:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:19:29,859 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 119 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 06:19:29,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:19:29,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804870359] [2022-01-18 06:19:29,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804870359] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:19:29,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111502680] [2022-01-18 06:19:29,860 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:19:29,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:19:29,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:19:29,861 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:19:29,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-01-18 06:19:29,888 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:19:29,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:19:29,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:19:29,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:19:30,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:30,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:30,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:30,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:30,950 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:19:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 9 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:30,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:19:32,483 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:19:32,484 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:19:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 12 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:34,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111502680] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:19:34,098 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:19:34,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 18] total 39 [2022-01-18 06:19:34,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129848929] [2022-01-18 06:19:34,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:19:34,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 06:19:34,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:19:34,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 06:19:34,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 06:19:34,099 INFO L87 Difference]: Start difference. First operand 73987 states and 184411 transitions. Second operand has 40 states, 40 states have (on average 3.275) internal successors, (131), 39 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:37,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:19:37,947 INFO L93 Difference]: Finished difference Result 105139 states and 261878 transitions. [2022-01-18 06:19:37,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 06:19:37,948 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.275) internal successors, (131), 39 states have internal predecessors, (131), 0 states have call successors, (0), 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 59 [2022-01-18 06:19:37,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:19:38,178 INFO L225 Difference]: With dead ends: 105139 [2022-01-18 06:19:38,178 INFO L226 Difference]: Without dead ends: 104907 [2022-01-18 06:19:38,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 89 SyntacticMatches, 7 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2663 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1194, Invalid=8118, Unknown=0, NotChecked=0, Total=9312 [2022-01-18 06:19:38,178 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 606 mSDsluCounter, 2618 mSDsCounter, 0 mSdLazyCounter, 2623 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 411 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:19:38,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1847 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2623 Invalid, 0 Unknown, 411 Unchecked, 1.5s Time] [2022-01-18 06:19:38,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104907 states. [2022-01-18 06:19:39,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104907 to 74151. [2022-01-18 06:19:39,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74151 states, 74150 states have (on average 2.4927174645987864) internal successors, (184835), 74150 states have internal predecessors, (184835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:40,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74151 states to 74151 states and 184835 transitions. [2022-01-18 06:19:40,032 INFO L78 Accepts]: Start accepts. Automaton has 74151 states and 184835 transitions. Word has length 59 [2022-01-18 06:19:40,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:19:40,032 INFO L470 AbstractCegarLoop]: Abstraction has 74151 states and 184835 transitions. [2022-01-18 06:19:40,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.275) internal successors, (131), 39 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:40,032 INFO L276 IsEmpty]: Start isEmpty. Operand 74151 states and 184835 transitions. [2022-01-18 06:19:40,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:19:40,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:19:40,093 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:19:40,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-01-18 06:19:40,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:19:40,295 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:19:40,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:19:40,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2023710643, now seen corresponding path program 95 times [2022-01-18 06:19:40,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:19:40,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077774211] [2022-01-18 06:19:40,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:19:40,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:19:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:19:40,672 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:40,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:19:40,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077774211] [2022-01-18 06:19:40,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077774211] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:19:40,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903343170] [2022-01-18 06:19:40,672 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:19:40,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:19:40,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:19:40,673 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:19:40,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-01-18 06:19:40,701 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-01-18 06:19:40,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:19:40,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 06:19:40,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:19:41,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:41,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:41,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,833 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:41,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,837 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:41,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,840 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:41,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:41,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:19:41,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:41,844 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 21 disjoint index pairs (out of 91 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 35 [2022-01-18 06:19:41,869 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:41,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:19:43,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,515 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,515 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,531 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,531 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,531 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,535 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:19:43,645 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:19:43,646 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 63 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 372 [2022-01-18 06:19:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:44,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903343170] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:19:44,428 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:19:44,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 47 [2022-01-18 06:19:44,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656170571] [2022-01-18 06:19:44,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:19:44,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-18 06:19:44,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:19:44,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-18 06:19:44,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=1821, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 06:19:44,429 INFO L87 Difference]: Start difference. First operand 74151 states and 184835 transitions. Second operand has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 47 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:08,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:20:08,626 INFO L93 Difference]: Finished difference Result 124541 states and 308978 transitions. [2022-01-18 06:20:08,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2022-01-18 06:20:08,626 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 47 states have internal predecessors, (157), 0 states have call successors, (0), 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 59 [2022-01-18 06:20:08,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:20:08,888 INFO L225 Difference]: With dead ends: 124541 [2022-01-18 06:20:08,888 INFO L226 Difference]: Without dead ends: 122897 [2022-01-18 06:20:08,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 106 SyntacticMatches, 5 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26233 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=9000, Invalid=62022, Unknown=0, NotChecked=0, Total=71022 [2022-01-18 06:20:08,891 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 1468 mSDsluCounter, 7380 mSDsCounter, 0 mSdLazyCounter, 4711 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 4931 SdHoareTripleChecker+Invalid, 8304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 4711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3138 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:20:08,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1468 Valid, 4931 Invalid, 8304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 4711 Invalid, 0 Unknown, 3138 Unchecked, 3.8s Time] [2022-01-18 06:20:09,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122897 states. [2022-01-18 06:20:10,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122897 to 83521. [2022-01-18 06:20:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83521 states, 83520 states have (on average 2.494073275862069) internal successors, (208305), 83520 states have internal predecessors, (208305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:10,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83521 states to 83521 states and 208305 transitions. [2022-01-18 06:20:10,872 INFO L78 Accepts]: Start accepts. Automaton has 83521 states and 208305 transitions. Word has length 59 [2022-01-18 06:20:10,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:20:10,872 INFO L470 AbstractCegarLoop]: Abstraction has 83521 states and 208305 transitions. [2022-01-18 06:20:10,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 47 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:10,872 INFO L276 IsEmpty]: Start isEmpty. Operand 83521 states and 208305 transitions. [2022-01-18 06:20:10,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:20:10,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:20:10,943 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:20:10,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-01-18 06:20:11,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2022-01-18 06:20:11,144 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:20:11,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:20:11,144 INFO L85 PathProgramCache]: Analyzing trace with hash 813369779, now seen corresponding path program 96 times [2022-01-18 06:20:11,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:20:11,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016763087] [2022-01-18 06:20:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:20:11,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:20:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:20:11,908 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:20:11,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:20:11,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016763087] [2022-01-18 06:20:11,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016763087] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:20:11,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209538619] [2022-01-18 06:20:11,909 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:20:11,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:20:11,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:20:11,912 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:20:11,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-01-18 06:20:11,942 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-01-18 06:20:11,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:20:11,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-18 06:20:11,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:20:13,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,088 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:13,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,098 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:13,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:13,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:13,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 48 [2022-01-18 06:20:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:20:13,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:20:14,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:14,322 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:20:14,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 63 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 372 [2022-01-18 06:20:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:20:15,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209538619] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:20:15,306 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:20:15,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 43 [2022-01-18 06:20:15,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361375362] [2022-01-18 06:20:15,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:20:15,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-18 06:20:15,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:20:15,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-18 06:20:15,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=1463, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 06:20:15,307 INFO L87 Difference]: Start difference. First operand 83521 states and 208305 transitions. Second operand has 44 states, 44 states have (on average 3.0454545454545454) internal successors, (134), 43 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:22,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:20:22,029 INFO L93 Difference]: Finished difference Result 111377 states and 277503 transitions. [2022-01-18 06:20:22,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-01-18 06:20:22,030 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.0454545454545454) internal successors, (134), 43 states have internal predecessors, (134), 0 states have call successors, (0), 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 59 [2022-01-18 06:20:22,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:20:22,281 INFO L225 Difference]: With dead ends: 111377 [2022-01-18 06:20:22,282 INFO L226 Difference]: Without dead ends: 110705 [2022-01-18 06:20:22,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 102 SyntacticMatches, 7 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5944 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=2687, Invalid=15673, Unknown=0, NotChecked=0, Total=18360 [2022-01-18 06:20:22,283 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 968 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 1837 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 2739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 658 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:20:22,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [968 Valid, 1562 Invalid, 2739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1837 Invalid, 0 Unknown, 658 Unchecked, 1.4s Time] [2022-01-18 06:20:22,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110705 states. [2022-01-18 06:20:23,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110705 to 86593. [2022-01-18 06:20:24,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86593 states, 86592 states have (on average 2.4938216001478195) internal successors, (215945), 86592 states have internal predecessors, (215945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:24,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86593 states to 86593 states and 215945 transitions. [2022-01-18 06:20:24,258 INFO L78 Accepts]: Start accepts. Automaton has 86593 states and 215945 transitions. Word has length 59 [2022-01-18 06:20:24,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:20:24,258 INFO L470 AbstractCegarLoop]: Abstraction has 86593 states and 215945 transitions. [2022-01-18 06:20:24,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.0454545454545454) internal successors, (134), 43 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:24,259 INFO L276 IsEmpty]: Start isEmpty. Operand 86593 states and 215945 transitions. [2022-01-18 06:20:24,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:20:24,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:20:24,329 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:20:24,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-01-18 06:20:24,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:20:24,530 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:20:24,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:20:24,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1847109197, now seen corresponding path program 97 times [2022-01-18 06:20:24,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:20:24,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460331175] [2022-01-18 06:20:24,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:20:24,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:20:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:20:24,875 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:20:24,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:20:24,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460331175] [2022-01-18 06:20:24,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460331175] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:20:24,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844086416] [2022-01-18 06:20:24,875 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:20:24,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:20:24,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:20:24,876 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:20:24,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-01-18 06:20:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:20:24,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:20:24,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:20:26,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:26,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:26,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:26,244 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:20:26,267 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:20:26,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:20:27,757 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:20:27,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:20:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 17 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:20:29,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844086416] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:20:29,102 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:20:29,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 39 [2022-01-18 06:20:29,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763715825] [2022-01-18 06:20:29,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:20:29,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 06:20:29,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:20:29,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 06:20:29,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1305, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 06:20:29,103 INFO L87 Difference]: Start difference. First operand 86593 states and 215945 transitions. Second operand has 40 states, 40 states have (on average 3.225) internal successors, (129), 39 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:33,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:20:33,039 INFO L93 Difference]: Finished difference Result 113101 states and 281768 transitions. [2022-01-18 06:20:33,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 06:20:33,040 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.225) internal successors, (129), 39 states have internal predecessors, (129), 0 states have call successors, (0), 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 59 [2022-01-18 06:20:33,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:20:33,276 INFO L225 Difference]: With dead ends: 113101 [2022-01-18 06:20:33,276 INFO L226 Difference]: Without dead ends: 112465 [2022-01-18 06:20:33,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 89 SyntacticMatches, 7 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2552 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1234, Invalid=7322, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 06:20:33,276 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 756 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 2943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:20:33,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 1948 Invalid, 2943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 2535 Invalid, 0 Unknown, 165 Unchecked, 1.5s Time] [2022-01-18 06:20:33,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112465 states. [2022-01-18 06:20:35,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112465 to 88815. [2022-01-18 06:20:35,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88815 states, 88814 states have (on average 2.4939874344134934) internal successors, (221501), 88814 states have internal predecessors, (221501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:35,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88815 states to 88815 states and 221501 transitions. [2022-01-18 06:20:35,329 INFO L78 Accepts]: Start accepts. Automaton has 88815 states and 221501 transitions. Word has length 59 [2022-01-18 06:20:35,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:20:35,329 INFO L470 AbstractCegarLoop]: Abstraction has 88815 states and 221501 transitions. [2022-01-18 06:20:35,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.225) internal successors, (129), 39 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:35,329 INFO L276 IsEmpty]: Start isEmpty. Operand 88815 states and 221501 transitions. [2022-01-18 06:20:35,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:20:35,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:20:35,410 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:20:35,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-01-18 06:20:35,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-01-18 06:20:35,610 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:20:35,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:20:35,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1231560115, now seen corresponding path program 98 times [2022-01-18 06:20:35,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:20:35,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646003130] [2022-01-18 06:20:35,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:20:35,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:20:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:20:35,966 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:20:35,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:20:35,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646003130] [2022-01-18 06:20:35,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646003130] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:20:35,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189828408] [2022-01-18 06:20:35,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:20:35,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:20:35,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:20:35,968 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:20:35,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-01-18 06:20:35,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:20:35,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:20:35,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:20:35,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:20:37,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:37,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:37,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:37,038 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:20:37,053 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:20:37,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:20:38,801 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:20:38,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:20:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 17 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:20:40,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189828408] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:20:40,214 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:20:40,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 39 [2022-01-18 06:20:40,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523722193] [2022-01-18 06:20:40,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:20:40,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 06:20:40,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:20:40,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 06:20:40,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1308, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 06:20:40,215 INFO L87 Difference]: Start difference. First operand 88815 states and 221501 transitions. Second operand has 40 states, 40 states have (on average 3.225) internal successors, (129), 39 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:44,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:20:44,779 INFO L93 Difference]: Finished difference Result 113571 states and 283400 transitions. [2022-01-18 06:20:44,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 06:20:44,780 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.225) internal successors, (129), 39 states have internal predecessors, (129), 0 states have call successors, (0), 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 59 [2022-01-18 06:20:44,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:20:45,005 INFO L225 Difference]: With dead ends: 113571 [2022-01-18 06:20:45,005 INFO L226 Difference]: Without dead ends: 112791 [2022-01-18 06:20:45,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 88 SyntacticMatches, 8 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3088 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1480, Invalid=8620, Unknown=0, NotChecked=0, Total=10100 [2022-01-18 06:20:45,006 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 1037 mSDsluCounter, 3363 mSDsCounter, 0 mSdLazyCounter, 2854 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 3453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 2854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 302 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:20:45,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1037 Valid, 2436 Invalid, 3453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 2854 Invalid, 0 Unknown, 302 Unchecked, 1.6s Time] [2022-01-18 06:20:45,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112791 states. [2022-01-18 06:20:46,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112791 to 91183. [2022-01-18 06:20:46,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91183 states, 91182 states have (on average 2.496424732951679) internal successors, (227629), 91182 states have internal predecessors, (227629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:47,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91183 states to 91183 states and 227629 transitions. [2022-01-18 06:20:47,024 INFO L78 Accepts]: Start accepts. Automaton has 91183 states and 227629 transitions. Word has length 59 [2022-01-18 06:20:47,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:20:47,024 INFO L470 AbstractCegarLoop]: Abstraction has 91183 states and 227629 transitions. [2022-01-18 06:20:47,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.225) internal successors, (129), 39 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:47,024 INFO L276 IsEmpty]: Start isEmpty. Operand 91183 states and 227629 transitions. [2022-01-18 06:20:47,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:20:47,100 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:20:47,100 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:20:47,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-01-18 06:20:47,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:20:47,301 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:20:47,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:20:47,301 INFO L85 PathProgramCache]: Analyzing trace with hash 182903219, now seen corresponding path program 99 times [2022-01-18 06:20:47,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:20:47,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003326888] [2022-01-18 06:20:47,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:20:47,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:20:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:20:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:20:47,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:20:47,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003326888] [2022-01-18 06:20:47,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003326888] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:20:47,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040968263] [2022-01-18 06:20:47,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:20:47,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:20:47,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:20:47,740 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:20:47,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-01-18 06:20:47,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-01-18 06:20:47,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:20:47,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:20:47,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:20:48,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,850 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:48,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:20:48,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:20:48,851 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:20:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:20:48,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:20:50,643 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:20:50,643 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:20:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 17 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:20:52,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040968263] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:20:52,423 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:20:52,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 39 [2022-01-18 06:20:52,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52568135] [2022-01-18 06:20:52,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:20:52,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 06:20:52,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:20:52,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 06:20:52,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1297, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 06:20:52,424 INFO L87 Difference]: Start difference. First operand 91183 states and 227629 transitions. Second operand has 40 states, 40 states have (on average 3.225) internal successors, (129), 39 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:57,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:20:57,184 INFO L93 Difference]: Finished difference Result 120811 states and 302027 transitions. [2022-01-18 06:20:57,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 06:20:57,184 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.225) internal successors, (129), 39 states have internal predecessors, (129), 0 states have call successors, (0), 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 59 [2022-01-18 06:20:57,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:20:57,480 INFO L225 Difference]: With dead ends: 120811 [2022-01-18 06:20:57,480 INFO L226 Difference]: Without dead ends: 119891 [2022-01-18 06:20:57,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 89 SyntacticMatches, 7 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4178 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1911, Invalid=10745, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 06:20:57,481 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 870 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 2585 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 2585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:20:57,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 2062 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 2585 Invalid, 0 Unknown, 160 Unchecked, 1.6s Time] [2022-01-18 06:20:57,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119891 states. [2022-01-18 06:20:59,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119891 to 96799. [2022-01-18 06:20:59,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96799 states, 96798 states have (on average 2.4969420855802804) internal successors, (241699), 96798 states have internal predecessors, (241699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:59,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96799 states to 96799 states and 241699 transitions. [2022-01-18 06:20:59,707 INFO L78 Accepts]: Start accepts. Automaton has 96799 states and 241699 transitions. Word has length 59 [2022-01-18 06:20:59,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:20:59,707 INFO L470 AbstractCegarLoop]: Abstraction has 96799 states and 241699 transitions. [2022-01-18 06:20:59,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.225) internal successors, (129), 39 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:59,707 INFO L276 IsEmpty]: Start isEmpty. Operand 96799 states and 241699 transitions. [2022-01-18 06:21:00,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:21:00,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:21:00,169 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:21:00,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-01-18 06:21:00,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2022-01-18 06:21:00,370 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:21:00,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:21:00,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1175227315, now seen corresponding path program 100 times [2022-01-18 06:21:00,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:21:00,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081790611] [2022-01-18 06:21:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:21:00,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:21:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:21:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:21:00,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:21:00,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081790611] [2022-01-18 06:21:00,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081790611] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:21:00,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143192744] [2022-01-18 06:21:00,757 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:21:00,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:21:00,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:21:00,758 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:21:00,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-01-18 06:21:00,786 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:21:00,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:21:00,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:21:00,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:21:01,837 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:01,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:01,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:01,853 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:21:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:21:01,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:21:03,332 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:21:03,333 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-01-18 06:21:04,786 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 17 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:21:04,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143192744] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:21:04,786 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:21:04,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 39 [2022-01-18 06:21:04,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262529210] [2022-01-18 06:21:04,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:21:04,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 06:21:04,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:21:04,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 06:21:04,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1304, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 06:21:04,787 INFO L87 Difference]: Start difference. First operand 96799 states and 241699 transitions. Second operand has 40 states, 40 states have (on average 3.225) internal successors, (129), 39 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:21:09,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:21:09,486 INFO L93 Difference]: Finished difference Result 140621 states and 351192 transitions. [2022-01-18 06:21:09,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 06:21:09,486 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.225) internal successors, (129), 39 states have internal predecessors, (129), 0 states have call successors, (0), 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 59 [2022-01-18 06:21:09,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:21:09,787 INFO L225 Difference]: With dead ends: 140621 [2022-01-18 06:21:09,787 INFO L226 Difference]: Without dead ends: 140281 [2022-01-18 06:21:09,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 89 SyntacticMatches, 7 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4019 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1816, Invalid=10840, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 06:21:09,788 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 722 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 2736 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 3226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 312 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:21:09,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 1889 Invalid, 3226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 2736 Invalid, 0 Unknown, 312 Unchecked, 1.6s Time] [2022-01-18 06:21:09,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140281 states. [2022-01-18 06:21:12,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140281 to 95021. [2022-01-18 06:21:12,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95021 states, 95020 states have (on average 2.4970216796463904) internal successors, (237267), 95020 states have internal predecessors, (237267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:21:12,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95021 states to 95021 states and 237267 transitions. [2022-01-18 06:21:12,597 INFO L78 Accepts]: Start accepts. Automaton has 95021 states and 237267 transitions. Word has length 59 [2022-01-18 06:21:12,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:21:12,597 INFO L470 AbstractCegarLoop]: Abstraction has 95021 states and 237267 transitions. [2022-01-18 06:21:12,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.225) internal successors, (129), 39 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:21:12,597 INFO L276 IsEmpty]: Start isEmpty. Operand 95021 states and 237267 transitions. [2022-01-18 06:21:12,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 06:21:12,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:21:12,686 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:21:12,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-01-18 06:21:12,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:21:12,887 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:21:12,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:21:12,887 INFO L85 PathProgramCache]: Analyzing trace with hash -246795341, now seen corresponding path program 101 times [2022-01-18 06:21:12,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:21:12,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013365988] [2022-01-18 06:21:12,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:21:12,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:21:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:21:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:21:13,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:21:13,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013365988] [2022-01-18 06:21:13,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013365988] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:21:13,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325381678] [2022-01-18 06:21:13,291 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:21:13,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:21:13,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:21:13,292 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:21:13,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-01-18 06:21:13,320 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-01-18 06:21:13,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:21:13,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 06:21:13,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:21:14,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,447 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:14,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:14,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:14,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:14,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:14,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:14,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:21:14,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:14,468 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 21 disjoint index pairs (out of 91 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 35 [2022-01-18 06:21:14,494 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:21:14,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:21:16,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,214 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,226 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,226 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,226 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:21:16,343 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:21:16,343 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 63 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 372 [2022-01-18 06:21:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:21:17,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325381678] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:21:17,300 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:21:17,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 48 [2022-01-18 06:21:17,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125673231] [2022-01-18 06:21:17,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:21:17,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-18 06:21:17,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:21:17,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-18 06:21:17,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=455, Invalid=1897, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 06:21:17,301 INFO L87 Difference]: Start difference. First operand 95021 states and 237267 transitions. Second operand has 49 states, 49 states have (on average 3.204081632653061) internal successors, (157), 48 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-01-18 06:21:24,142 WARN L244 SmtUtils]: Removed 3 from assertion stack [2022-01-18 06:21:24,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 06:21:24,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3381 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2237, Invalid=12283, Unknown=0, NotChecked=0, Total=14520 [2022-01-18 06:21:24,144 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 811 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 475 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:21:24,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 925 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1661 Invalid, 0 Unknown, 475 Unchecked, 1.3s Time] [2022-01-18 06:21:24,145 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-01-18 06:21:24,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-01-18 06:21:24,165 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 06:21:24,165 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 06:21:24,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:21:24,346 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (95021states) and FLOYD_HOARE automaton (currently 77 states, 49 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 103 for 5ms.. [2022-01-18 06:21:24,348 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 06:21:24,348 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 06:21:24,348 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 06:21:24,351 INFO L732 BasicCegarLoop]: Path program histogram: [101, 3, 2, 1, 1] [2022-01-18 06:21:24,353 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 06:21:24,354 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 06:21:24,356 INFO L202 PluginConnector]: Adding new model send-receive.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 06:21:24 BasicIcfg [2022-01-18 06:21:24,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 06:21:24,356 INFO L158 Benchmark]: Toolchain (without parser) took 731799.09ms. Allocated memory was 394.3MB in the beginning and 12.8GB in the end (delta: 12.4GB). Free memory was 356.1MB in the beginning and 9.2GB in the end (delta: -8.8GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. [2022-01-18 06:21:24,356 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 394.3MB. Free memory is still 357.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 06:21:24,356 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.13ms. Allocated memory is still 394.3MB. Free memory was 355.9MB in the beginning and 354.6MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2022-01-18 06:21:24,356 INFO L158 Benchmark]: Boogie Preprocessor took 12.94ms. Allocated memory is still 394.3MB. Free memory was 354.4MB in the beginning and 353.4MB in the end (delta: 964.5kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 06:21:24,356 INFO L158 Benchmark]: RCFGBuilder took 170.00ms. Allocated memory is still 394.3MB. Free memory was 353.4MB in the beginning and 344.1MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2022-01-18 06:21:24,357 INFO L158 Benchmark]: TraceAbstraction took 731586.10ms. Allocated memory was 394.3MB in the beginning and 12.8GB in the end (delta: 12.4GB). Free memory was 343.6MB in the beginning and 9.2GB in the end (delta: -8.9GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. [2022-01-18 06:21:24,357 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 0.12ms. Allocated memory is still 394.3MB. Free memory is still 357.2MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.13ms. Allocated memory is still 394.3MB. Free memory was 355.9MB in the beginning and 354.6MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 12.94ms. Allocated memory is still 394.3MB. Free memory was 354.4MB in the beginning and 353.4MB in the end (delta: 964.5kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 170.00ms. Allocated memory is still 394.3MB. Free memory was 353.4MB in the beginning and 344.1MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * TraceAbstraction took 731586.10ms. Allocated memory was 394.3MB in the beginning and 12.8GB in the end (delta: 12.4GB). Free memory was 343.6MB in the beginning and 9.2GB in the end (delta: -8.9GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. * 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 - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (95021states) and FLOYD_HOARE automaton (currently 77 states, 49 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 103 for 5ms.. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (95021states) and FLOYD_HOARE automaton (currently 77 states, 49 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 103 for 5ms.. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (95021states) and FLOYD_HOARE automaton (currently 77 states, 49 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 103 for 5ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (95021states) and FLOYD_HOARE automaton (currently 77 states, 49 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 103 for 5ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 45 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 731.5s, OverallIterations: 108, TraceHistogramMax: 7, PathProgramHistogramMax: 101, EmptinessCheckTime: 3.2s, AutomataDifference: 354.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 50772 SdHoareTripleChecker+Valid, 87.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50772 mSDsluCounter, 119908 SdHoareTripleChecker+Invalid, 74.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 45687 IncrementalHoareTripleChecker+Unchecked, 166226 mSDsCounter, 12333 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 150118 IncrementalHoareTripleChecker+Invalid, 208138 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12333 mSolverCounterUnsat, 7341 mSDtfsCounter, 150118 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16586 GetRequests, 8062 SyntacticMatches, 368 SemanticMatches, 8155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279320 ImplicationChecksByTransitivity, 302.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106687occurred in iteration=94, InterpolantAutomatonStates: 5876, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 70.5s AutomataMinimizationTime, 107 MinimizatonAttempts, 1255922 StatesRemovedByMinimization, 104 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 276.8s InterpolantComputationTime, 10072 NumberOfCodeBlocks, 10072 NumberOfCodeBlocksAsserted, 491 NumberOfCheckSat, 14730 ConstructedInterpolants, 708 QuantifiedInterpolants, 444135 SizeOfPredicates, 415 NumberOfNonLiveVariables, 11041 ConjunctsInSsa, 4329 ConjunctsInUnsatCore, 315 InterpolantComputations, 5 PerfectInterpolantSequences, 2706/23866 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown