/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-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 06:05:25,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 06:05:25,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 06:05:25,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 06:05:25,262 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 06:05:25,294 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 06:05:25,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 06:05:25,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 06:05:25,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 06:05:25,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 06:05:25,296 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 06:05:25,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 06:05:25,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 06:05:25,296 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 06:05:25,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 06:05:25,297 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 06:05:25,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 06:05:25,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 06:05:25,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 06:05:25,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 06:05:25,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 06:05:25,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 06:05:25,298 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 06:05:25,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 06:05:25,298 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 06:05:25,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 06:05:25,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 06:05:25,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 06:05:25,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 06:05:25,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 06:05:25,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 06:05:25,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 06:05:25,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 06:05:25,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 06:05:25,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 06:05:25,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 06:05:25,306 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 06:05:25,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 06:05:25,307 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 06:05:25,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 06:05:25,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 06:05:25,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 06:05:25,516 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 06:05:25,517 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 06:05:25,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/send-receive-alt.wvr.bpl [2022-01-18 06:05:25,518 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/send-receive-alt.wvr.bpl' [2022-01-18 06:05:25,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 06:05:25,540 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 06:05:25,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 06:05:25,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 06:05:25,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 06:05:25,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:05:25" (1/1) ... [2022-01-18 06:05:25,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:05:25" (1/1) ... [2022-01-18 06:05:25,569 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 06:05:25,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 06:05:25,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 06:05:25,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 06:05:25,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 06:05:25,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:05:25" (1/1) ... [2022-01-18 06:05:25,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:05:25" (1/1) ... [2022-01-18 06:05:25,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:05:25" (1/1) ... [2022-01-18 06:05:25,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:05:25" (1/1) ... [2022-01-18 06:05:25,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:05:25" (1/1) ... [2022-01-18 06:05:25,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:05:25" (1/1) ... [2022-01-18 06:05:25,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:05:25" (1/1) ... [2022-01-18 06:05:25,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 06:05:25,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 06:05:25,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 06:05:25,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 06:05:25,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:05:25" (1/1) ... [2022-01-18 06:05:25,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 06:05:25,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:25,621 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 06:05:25,642 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 06:05:25,658 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 06:05:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 06:05:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 06:05:25,658 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 06:05:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 06:05:25,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 06:05:25,659 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 06:05:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 06:05:25,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 06:05:25,660 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 06:05:25,698 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 06:05:25,699 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 06:05:25,762 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 06:05:25,776 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 06:05:25,777 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 06:05:25,777 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2022-01-18 06:05:25,779 INFO L202 PluginConnector]: Adding new model send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 06:05:25 BoogieIcfgContainer [2022-01-18 06:05:25,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 06:05:25,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 06:05:25,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 06:05:25,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 06:05:25,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:05:25" (1/2) ... [2022-01-18 06:05:25,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b475f7 and model type send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 06:05:25, skipping insertion in model container [2022-01-18 06:05:25,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 06:05:25" (2/2) ... [2022-01-18 06:05:25,785 INFO L111 eAbstractionObserver]: Analyzing ICFG send-receive-alt.wvr.bpl [2022-01-18 06:05:25,789 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 06:05:25,790 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 06:05:25,790 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 06:05:25,790 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 06:05:25,814 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 06:05:25,849 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 06:05:25,855 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 06:05:25,856 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 06:05:25,863 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 21 transitions, 58 flow [2022-01-18 06:05:25,875 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:25,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:25,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-18 06:05:25,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:25,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:25,883 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:25,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:25,887 INFO L85 PathProgramCache]: Analyzing trace with hash -603576974, now seen corresponding path program 1 times [2022-01-18 06:05:25,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:25,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116621045] [2022-01-18 06:05:25,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:25,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:26,046 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 06:05:26,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:26,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116621045] [2022-01-18 06:05:26,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116621045] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 06:05:26,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 06:05:26,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 06:05:26,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736461646] [2022-01-18 06:05:26,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 06:05:26,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 06:05:26,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:26,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 06:05:26,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 06:05:26,080 INFO L87 Difference]: Start difference. First operand has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 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 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:26,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:26,116 INFO L93 Difference]: Finished difference Result 42 states and 82 transitions. [2022-01-18 06:05:26,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 06:05:26,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-18 06:05:26,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:26,141 INFO L225 Difference]: With dead ends: 42 [2022-01-18 06:05:26,141 INFO L226 Difference]: Without dead ends: 30 [2022-01-18 06:05:26,143 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 06:05:26,146 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:26,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 17 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:05:26,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-18 06:05:26,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-01-18 06:05:26,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 29 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:26,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 57 transitions. [2022-01-18 06:05:26,172 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 57 transitions. Word has length 11 [2022-01-18 06:05:26,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:26,172 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 57 transitions. [2022-01-18 06:05:26,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:26,173 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 57 transitions. [2022-01-18 06:05:26,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-18 06:05:26,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:26,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:26,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 06:05:26,174 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:26,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:26,175 INFO L85 PathProgramCache]: Analyzing trace with hash -978133573, now seen corresponding path program 1 times [2022-01-18 06:05:26,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:26,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035303167] [2022-01-18 06:05:26,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:26,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:26,202 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 06:05:26,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:26,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035303167] [2022-01-18 06:05:26,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035303167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 06:05:26,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 06:05:26,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 06:05:26,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760036127] [2022-01-18 06:05:26,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 06:05:26,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 06:05:26,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:26,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 06:05:26,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 06:05:26,206 INFO L87 Difference]: Start difference. First operand 30 states and 57 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:26,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:26,220 INFO L93 Difference]: Finished difference Result 32 states and 57 transitions. [2022-01-18 06:05:26,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 06:05:26,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-18 06:05:26,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:26,221 INFO L225 Difference]: With dead ends: 32 [2022-01-18 06:05:26,221 INFO L226 Difference]: Without dead ends: 31 [2022-01-18 06:05:26,222 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 06:05:26,223 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:26,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 17 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:05:26,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-18 06:05:26,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-01-18 06:05:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 30 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 06:05:26,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 56 transitions. [2022-01-18 06:05:26,232 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 56 transitions. Word has length 12 [2022-01-18 06:05:26,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:26,232 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 56 transitions. [2022-01-18 06:05:26,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 56 transitions. [2022-01-18 06:05:26,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 06:05:26,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:26,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:26,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 06:05:26,234 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:26,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:26,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1451787426, now seen corresponding path program 1 times [2022-01-18 06:05:26,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:26,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169009688] [2022-01-18 06:05:26,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:26,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:26,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:26,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:26,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169009688] [2022-01-18 06:05:26,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169009688] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:26,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767142411] [2022-01-18 06:05:26,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:26,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:26,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:26,366 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 06:05:26,402 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 06:05:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:26,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 06:05:26,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:26,606 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 06:05:26,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:26,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:26,784 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:05:26,785 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 06:05:26,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:26,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767142411] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:26,890 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:26,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-01-18 06:05:26,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685568426] [2022-01-18 06:05:26,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:26,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 06:05:26,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:26,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 06:05:26,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-18 06:05:26,894 INFO L87 Difference]: Start difference. First operand 31 states and 56 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:26,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:26,980 INFO L93 Difference]: Finished difference Result 52 states and 101 transitions. [2022-01-18 06:05:26,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 06:05:26,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 06:05:26,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:26,981 INFO L225 Difference]: With dead ends: 52 [2022-01-18 06:05:26,981 INFO L226 Difference]: Without dead ends: 41 [2022-01-18 06:05:26,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-18 06:05:26,983 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:26,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 72 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 06:05:26,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-18 06:05:26,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2022-01-18 06:05:26,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 35 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:26,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 67 transitions. [2022-01-18 06:05:26,990 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 67 transitions. Word has length 15 [2022-01-18 06:05:26,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:26,991 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 67 transitions. [2022-01-18 06:05:26,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:26,991 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 67 transitions. [2022-01-18 06:05:26,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 06:05:26,992 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:26,992 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:27,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 06:05:27,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:27,204 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:27,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:27,205 INFO L85 PathProgramCache]: Analyzing trace with hash -552180542, now seen corresponding path program 1 times [2022-01-18 06:05:27,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:27,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431629554] [2022-01-18 06:05:27,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:27,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:05:27,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:27,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431629554] [2022-01-18 06:05:27,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431629554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 06:05:27,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 06:05:27,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 06:05:27,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500963222] [2022-01-18 06:05:27,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 06:05:27,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 06:05:27,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:27,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 06:05:27,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 06:05:27,226 INFO L87 Difference]: Start difference. First operand 36 states and 67 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:27,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:27,244 INFO L93 Difference]: Finished difference Result 40 states and 75 transitions. [2022-01-18 06:05:27,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 06:05:27,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 06:05:27,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:27,245 INFO L225 Difference]: With dead ends: 40 [2022-01-18 06:05:27,245 INFO L226 Difference]: Without dead ends: 40 [2022-01-18 06:05:27,246 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 06:05:27,247 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:27,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 14 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:05:27,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-18 06:05:27,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2022-01-18 06:05:27,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.911764705882353) internal successors, (65), 34 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 06:05:27,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 65 transitions. [2022-01-18 06:05:27,252 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 65 transitions. Word has length 15 [2022-01-18 06:05:27,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:27,252 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 65 transitions. [2022-01-18 06:05:27,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:27,253 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 65 transitions. [2022-01-18 06:05:27,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 06:05:27,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:27,253 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:27,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 06:05:27,254 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:27,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:27,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1885895719, now seen corresponding path program 2 times [2022-01-18 06:05:27,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:27,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597024537] [2022-01-18 06:05:27,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:27,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:27,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:27,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:27,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597024537] [2022-01-18 06:05:27,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597024537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 06:05:27,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 06:05:27,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 06:05:27,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200088101] [2022-01-18 06:05:27,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 06:05:27,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 06:05:27,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:27,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 06:05:27,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 06:05:27,303 INFO L87 Difference]: Start difference. First operand 35 states and 65 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:27,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:27,330 INFO L93 Difference]: Finished difference Result 86 states and 160 transitions. [2022-01-18 06:05:27,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 06:05:27,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-18 06:05:27,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:27,331 INFO L225 Difference]: With dead ends: 86 [2022-01-18 06:05:27,331 INFO L226 Difference]: Without dead ends: 84 [2022-01-18 06:05:27,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 06:05:27,333 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:27,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 37 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:05:27,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-01-18 06:05:27,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 58. [2022-01-18 06:05:27,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.0526315789473686) internal successors, (117), 57 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:27,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 117 transitions. [2022-01-18 06:05:27,344 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 117 transitions. Word has length 16 [2022-01-18 06:05:27,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:27,344 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 117 transitions. [2022-01-18 06:05:27,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:27,344 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 117 transitions. [2022-01-18 06:05:27,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 06:05:27,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:27,345 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:27,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 06:05:27,346 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:27,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:27,346 INFO L85 PathProgramCache]: Analyzing trace with hash -2121429846, now seen corresponding path program 3 times [2022-01-18 06:05:27,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:27,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948137808] [2022-01-18 06:05:27,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:27,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:05:27,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:27,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948137808] [2022-01-18 06:05:27,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948137808] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:27,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506659078] [2022-01-18 06:05:27,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:05:27,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:27,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:27,392 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 06:05:27,393 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 06:05:27,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 06:05:27,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:05:27,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-18 06:05:27,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:05:27,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:05:27,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506659078] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:27,495 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:27,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-01-18 06:05:27,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661755299] [2022-01-18 06:05:27,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:27,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 06:05:27,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:27,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 06:05:27,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 06:05:27,497 INFO L87 Difference]: Start difference. First operand 58 states and 117 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 06:05:27,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:27,524 INFO L93 Difference]: Finished difference Result 79 states and 150 transitions. [2022-01-18 06:05:27,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 06:05:27,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 06:05:27,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:27,528 INFO L225 Difference]: With dead ends: 79 [2022-01-18 06:05:27,528 INFO L226 Difference]: Without dead ends: 79 [2022-01-18 06:05:27,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 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 06:05:27,530 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:27,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 23 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:05:27,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-01-18 06:05:27,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2022-01-18 06:05:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.0441176470588234) internal successors, (139), 68 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 06:05:27,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 139 transitions. [2022-01-18 06:05:27,552 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 139 transitions. Word has length 19 [2022-01-18 06:05:27,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:27,553 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 139 transitions. [2022-01-18 06:05:27,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 06:05:27,553 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 139 transitions. [2022-01-18 06:05:27,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 06:05:27,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:27,554 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:27,572 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 06:05:27,759 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 06:05:27,760 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:27,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:27,760 INFO L85 PathProgramCache]: Analyzing trace with hash 169569482, now seen corresponding path program 1 times [2022-01-18 06:05:27,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:27,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024605630] [2022-01-18 06:05:27,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:27,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:27,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:27,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024605630] [2022-01-18 06:05:27,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024605630] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:27,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062701221] [2022-01-18 06:05:27,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:27,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:27,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:27,916 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 06:05:27,948 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 06:05:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:27,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 06:05:27,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:28,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:28,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:28,164 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 06:05:28,194 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:28,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:28,353 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:05:28,353 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 06:05:28,520 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:28,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062701221] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:28,521 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:28,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-01-18 06:05:28,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803609228] [2022-01-18 06:05:28,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:28,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 06:05:28,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:28,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 06:05:28,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-01-18 06:05:28,523 INFO L87 Difference]: Start difference. First operand 69 states and 139 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 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 06:05:28,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:28,632 INFO L93 Difference]: Finished difference Result 114 states and 236 transitions. [2022-01-18 06:05:28,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 06:05:28,633 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 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 19 [2022-01-18 06:05:28,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:28,634 INFO L225 Difference]: With dead ends: 114 [2022-01-18 06:05:28,634 INFO L226 Difference]: Without dead ends: 97 [2022-01-18 06:05:28,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-01-18 06:05:28,636 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 51 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:28,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 83 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 68 Invalid, 0 Unknown, 3 Unchecked, 0.1s Time] [2022-01-18 06:05:28,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-01-18 06:05:28,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 75. [2022-01-18 06:05:28,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 2.0) internal successors, (148), 74 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:28,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 148 transitions. [2022-01-18 06:05:28,650 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 148 transitions. Word has length 19 [2022-01-18 06:05:28,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:28,650 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 148 transitions. [2022-01-18 06:05:28,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 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 06:05:28,652 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 148 transitions. [2022-01-18 06:05:28,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 06:05:28,653 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:28,653 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:28,670 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 06:05:28,859 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 06:05:28,860 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:28,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:28,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2094263290, now seen corresponding path program 2 times [2022-01-18 06:05:28,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:28,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732517611] [2022-01-18 06:05:28,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:28,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:28,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:28,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:28,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732517611] [2022-01-18 06:05:28,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732517611] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:28,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406854458] [2022-01-18 06:05:28,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:05:28,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:28,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:28,997 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 06:05:29,029 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 06:05:29,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:05:29,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:05:29,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 06:05:29,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:29,160 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-01-18 06:05:29,160 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 06:05:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:29,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:29,345 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:05:29,346 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 06:05:29,527 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:29,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406854458] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:29,528 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:29,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-01-18 06:05:29,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389133828] [2022-01-18 06:05:29,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:29,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 06:05:29,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:29,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 06:05:29,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-01-18 06:05:29,529 INFO L87 Difference]: Start difference. First operand 75 states and 148 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:29,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:29,605 INFO L93 Difference]: Finished difference Result 111 states and 224 transitions. [2022-01-18 06:05:29,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 06:05:29,606 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have 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 06:05:29,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:29,607 INFO L225 Difference]: With dead ends: 111 [2022-01-18 06:05:29,607 INFO L226 Difference]: Without dead ends: 96 [2022-01-18 06:05:29,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-01-18 06:05:29,608 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 34 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:29,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 126 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 06:05:29,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-01-18 06:05:29,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 82. [2022-01-18 06:05:29,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.0123456790123457) internal successors, (163), 81 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:29,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 163 transitions. [2022-01-18 06:05:29,625 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 163 transitions. Word has length 19 [2022-01-18 06:05:29,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:29,625 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 163 transitions. [2022-01-18 06:05:29,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:29,625 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 163 transitions. [2022-01-18 06:05:29,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 06:05:29,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:29,626 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:29,644 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 06:05:29,826 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 06:05:29,827 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:29,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:29,827 INFO L85 PathProgramCache]: Analyzing trace with hash 327811023, now seen corresponding path program 3 times [2022-01-18 06:05:29,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:29,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808024334] [2022-01-18 06:05:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:29,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:29,878 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:29,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:29,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808024334] [2022-01-18 06:05:29,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808024334] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:29,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653735246] [2022-01-18 06:05:29,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:05:29,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:29,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:29,882 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 06:05:29,882 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 06:05:29,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 06:05:29,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:05:29,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 06:05:29,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:29,947 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:29,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:29,987 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:29,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653735246] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:29,987 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:29,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-01-18 06:05:29,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505924836] [2022-01-18 06:05:29,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:29,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 06:05:29,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:29,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 06:05:29,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-18 06:05:29,989 INFO L87 Difference]: Start difference. First operand 82 states and 163 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:30,011 INFO L93 Difference]: Finished difference Result 181 states and 351 transitions. [2022-01-18 06:05:30,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 06:05:30,012 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 06:05:30,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:30,013 INFO L225 Difference]: With dead ends: 181 [2022-01-18 06:05:30,013 INFO L226 Difference]: Without dead ends: 178 [2022-01-18 06:05:30,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 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 06:05:30,014 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 49 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:30,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 40 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:05:30,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-01-18 06:05:30,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 106. [2022-01-18 06:05:30,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.0952380952380953) internal successors, (220), 105 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 220 transitions. [2022-01-18 06:05:30,019 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 220 transitions. Word has length 20 [2022-01-18 06:05:30,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:30,019 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 220 transitions. [2022-01-18 06:05:30,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:30,019 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 220 transitions. [2022-01-18 06:05:30,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-18 06:05:30,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:30,020 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:30,045 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 06:05:30,245 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 06:05:30,246 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:30,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:30,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1610697433, now seen corresponding path program 4 times [2022-01-18 06:05:30,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:30,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888384357] [2022-01-18 06:05:30,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:30,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:30,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:30,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888384357] [2022-01-18 06:05:30,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888384357] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:30,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870023839] [2022-01-18 06:05:30,357 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:05:30,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:30,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:30,359 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 06:05:30,360 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 06:05:30,386 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:05:30,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:05:30,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 06:05:30,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:30,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:30,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:30,588 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 06:05:30,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:30,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:30,775 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 06:05:30,776 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 06:05:30,900 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:30,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870023839] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:30,900 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:30,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-01-18 06:05:30,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807794742] [2022-01-18 06:05:30,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:30,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 06:05:30,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:30,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 06:05:30,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-01-18 06:05:30,904 INFO L87 Difference]: Start difference. First operand 106 states and 220 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:30,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:30,997 INFO L93 Difference]: Finished difference Result 169 states and 355 transitions. [2022-01-18 06:05:30,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 06:05:30,997 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-18 06:05:30,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:30,998 INFO L225 Difference]: With dead ends: 169 [2022-01-18 06:05:30,998 INFO L226 Difference]: Without dead ends: 154 [2022-01-18 06:05:30,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-01-18 06:05:30,999 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 65 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:31,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 93 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 66 Invalid, 0 Unknown, 3 Unchecked, 0.0s Time] [2022-01-18 06:05:31,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-01-18 06:05:31,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 100. [2022-01-18 06:05:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.090909090909091) internal successors, (207), 99 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:31,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 207 transitions. [2022-01-18 06:05:31,004 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 207 transitions. Word has length 22 [2022-01-18 06:05:31,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:31,004 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 207 transitions. [2022-01-18 06:05:31,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:31,004 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 207 transitions. [2022-01-18 06:05:31,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 06:05:31,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:31,005 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:31,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-18 06:05:31,227 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 06:05:31,228 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:31,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:31,228 INFO L85 PathProgramCache]: Analyzing trace with hash -476045102, now seen corresponding path program 5 times [2022-01-18 06:05:31,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:31,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830253107] [2022-01-18 06:05:31,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:31,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:31,399 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:31,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:31,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830253107] [2022-01-18 06:05:31,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830253107] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:31,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852888815] [2022-01-18 06:05:31,399 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:05:31,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:31,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:31,401 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 06:05:31,423 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 06:05:31,431 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 06:05:31,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:05:31,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 06:05:31,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:31,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:31,692 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:31,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:31,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:31,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:31,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:31,696 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 24 [2022-01-18 06:05:31,721 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:31,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:32,013 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-01-18 06:05:32,014 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 06:05:32,240 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:32,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852888815] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:32,240 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:32,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-01-18 06:05:32,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927665382] [2022-01-18 06:05:32,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:32,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 06:05:32,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:32,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 06:05:32,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-01-18 06:05:32,242 INFO L87 Difference]: Start difference. First operand 100 states and 207 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 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 06:05:32,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:32,697 INFO L93 Difference]: Finished difference Result 568 states and 1167 transitions. [2022-01-18 06:05:32,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 06:05:32,697 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 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 23 [2022-01-18 06:05:32,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:32,699 INFO L225 Difference]: With dead ends: 568 [2022-01-18 06:05:32,699 INFO L226 Difference]: Without dead ends: 359 [2022-01-18 06:05:32,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=243, Invalid=879, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 06:05:32,700 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 243 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:32,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 282 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 235 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2022-01-18 06:05:32,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-01-18 06:05:32,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 156. [2022-01-18 06:05:32,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.232258064516129) internal successors, (346), 155 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:32,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 346 transitions. [2022-01-18 06:05:32,705 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 346 transitions. Word has length 23 [2022-01-18 06:05:32,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:32,705 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 346 transitions. [2022-01-18 06:05:32,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 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 06:05:32,705 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 346 transitions. [2022-01-18 06:05:32,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 06:05:32,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:32,706 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:32,732 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 06:05:32,907 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 06:05:32,907 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:32,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:32,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1438145602, now seen corresponding path program 6 times [2022-01-18 06:05:32,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:32,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647737865] [2022-01-18 06:05:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:32,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:33,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:33,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647737865] [2022-01-18 06:05:33,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647737865] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:33,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147523698] [2022-01-18 06:05:33,073 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:05:33,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:33,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:33,075 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 06:05:33,099 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 06:05:33,109 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 06:05:33,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:05:33,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:05:33,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:33,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:33,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:33,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:33,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:33,380 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:33,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:33,387 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 06:05:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:33,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:33,670 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-01-18 06:05:33,670 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 06:05:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:33,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147523698] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:33,909 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:33,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-01-18 06:05:33,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377306727] [2022-01-18 06:05:33,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:33,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 06:05:33,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:33,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 06:05:33,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2022-01-18 06:05:33,911 INFO L87 Difference]: Start difference. First operand 156 states and 346 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 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 06:05:34,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:34,121 INFO L93 Difference]: Finished difference Result 304 states and 663 transitions. [2022-01-18 06:05:34,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 06:05:34,122 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 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 23 [2022-01-18 06:05:34,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:34,123 INFO L225 Difference]: With dead ends: 304 [2022-01-18 06:05:34,123 INFO L226 Difference]: Without dead ends: 274 [2022-01-18 06:05:34,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2022-01-18 06:05:34,124 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 100 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:34,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 281 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 230 Invalid, 0 Unknown, 8 Unchecked, 0.1s Time] [2022-01-18 06:05:34,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-01-18 06:05:34,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 166. [2022-01-18 06:05:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.16969696969697) internal successors, (358), 165 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:34,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 358 transitions. [2022-01-18 06:05:34,130 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 358 transitions. Word has length 23 [2022-01-18 06:05:34,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:34,130 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 358 transitions. [2022-01-18 06:05:34,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 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 06:05:34,130 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 358 transitions. [2022-01-18 06:05:34,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 06:05:34,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:34,131 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:34,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 06:05:34,339 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 06:05:34,340 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:34,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:34,340 INFO L85 PathProgramCache]: Analyzing trace with hash 983926786, now seen corresponding path program 7 times [2022-01-18 06:05:34,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:34,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554373502] [2022-01-18 06:05:34,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:34,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:34,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:34,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554373502] [2022-01-18 06:05:34,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554373502] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:34,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186576529] [2022-01-18 06:05:34,479 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:05:34,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:34,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:34,484 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 06:05:34,512 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 06:05:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:34,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:05:34,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:34,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:34,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:34,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:34,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:34,767 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 06:05:34,790 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:34,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:35,058 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-01-18 06:05:35,058 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 06:05:35,302 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:35,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186576529] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:35,302 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:35,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 06:05:35,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862674654] [2022-01-18 06:05:35,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:35,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 06:05:35,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:35,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 06:05:35,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-01-18 06:05:35,304 INFO L87 Difference]: Start difference. First operand 166 states and 358 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:35,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:35,875 INFO L93 Difference]: Finished difference Result 629 states and 1277 transitions. [2022-01-18 06:05:35,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 06:05:35,876 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have 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 06:05:35,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:35,878 INFO L225 Difference]: With dead ends: 629 [2022-01-18 06:05:35,878 INFO L226 Difference]: Without dead ends: 415 [2022-01-18 06:05:35,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:05:35,879 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 209 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:35,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 455 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 422 Invalid, 0 Unknown, 51 Unchecked, 0.3s Time] [2022-01-18 06:05:35,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-01-18 06:05:35,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 193. [2022-01-18 06:05:35,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.1770833333333335) internal successors, (418), 192 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:35,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 418 transitions. [2022-01-18 06:05:35,887 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 418 transitions. Word has length 23 [2022-01-18 06:05:35,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:35,887 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 418 transitions. [2022-01-18 06:05:35,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:35,887 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 418 transitions. [2022-01-18 06:05:35,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 06:05:35,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:35,888 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:35,915 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 06:05:36,103 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 06:05:36,103 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:36,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:36,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1396849806, now seen corresponding path program 8 times [2022-01-18 06:05:36,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:36,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750277747] [2022-01-18 06:05:36,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:36,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:36,240 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:36,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:36,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750277747] [2022-01-18 06:05:36,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750277747] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:36,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114784306] [2022-01-18 06:05:36,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:05:36,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:36,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:36,241 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 06:05:36,242 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 06:05:36,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:05:36,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:05:36,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:05:36,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:36,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:36,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:36,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:36,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:36,486 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 06:05:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:36,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:36,760 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-01-18 06:05:36,761 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 06:05:36,995 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:36,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114784306] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:36,995 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:36,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 06:05:36,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130502030] [2022-01-18 06:05:36,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:36,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 06:05:36,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:36,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 06:05:36,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-01-18 06:05:36,997 INFO L87 Difference]: Start difference. First operand 193 states and 418 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:37,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:37,393 INFO L93 Difference]: Finished difference Result 452 states and 974 transitions. [2022-01-18 06:05:37,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 06:05:37,393 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have 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 06:05:37,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:37,396 INFO L225 Difference]: With dead ends: 452 [2022-01-18 06:05:37,396 INFO L226 Difference]: Without dead ends: 387 [2022-01-18 06:05:37,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=825, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 06:05:37,397 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 143 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:37,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 355 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 267 Invalid, 0 Unknown, 60 Unchecked, 0.2s Time] [2022-01-18 06:05:37,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-01-18 06:05:37,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 152. [2022-01-18 06:05:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.0728476821192054) internal successors, (313), 151 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:37,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 313 transitions. [2022-01-18 06:05:37,403 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 313 transitions. Word has length 23 [2022-01-18 06:05:37,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:37,403 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 313 transitions. [2022-01-18 06:05:37,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:37,404 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 313 transitions. [2022-01-18 06:05:37,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 06:05:37,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:37,404 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:37,428 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 06:05:37,623 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 06:05:37,623 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:37,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:37,624 INFO L85 PathProgramCache]: Analyzing trace with hash 2108487170, now seen corresponding path program 9 times [2022-01-18 06:05:37,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:37,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602943834] [2022-01-18 06:05:37,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:37,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:37,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:37,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602943834] [2022-01-18 06:05:37,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602943834] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:37,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019082083] [2022-01-18 06:05:37,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:05:37,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:37,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:37,773 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 06:05:37,782 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 06:05:37,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 06:05:37,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:05:37,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:05:37,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:37,993 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-01-18 06:05:37,995 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 06:05:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:38,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:38,259 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-01-18 06:05:38,260 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 06:05:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:38,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019082083] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:38,492 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:38,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 06:05:38,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509671293] [2022-01-18 06:05:38,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:38,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 06:05:38,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:38,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 06:05:38,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-01-18 06:05:38,493 INFO L87 Difference]: Start difference. First operand 152 states and 313 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 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 06:05:38,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:38,642 INFO L93 Difference]: Finished difference Result 303 states and 621 transitions. [2022-01-18 06:05:38,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 06:05:38,647 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 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 23 [2022-01-18 06:05:38,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:38,649 INFO L225 Difference]: With dead ends: 303 [2022-01-18 06:05:38,649 INFO L226 Difference]: Without dead ends: 288 [2022-01-18 06:05:38,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-01-18 06:05:38,651 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 101 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:38,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 214 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 06:05:38,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-01-18 06:05:38,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 167. [2022-01-18 06:05:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 2.0602409638554215) internal successors, (342), 166 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:38,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 342 transitions. [2022-01-18 06:05:38,657 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 342 transitions. Word has length 23 [2022-01-18 06:05:38,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:38,657 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 342 transitions. [2022-01-18 06:05:38,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 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 06:05:38,657 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 342 transitions. [2022-01-18 06:05:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 06:05:38,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:38,659 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:38,681 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 06:05:38,871 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 06:05:38,871 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:38,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:38,872 INFO L85 PathProgramCache]: Analyzing trace with hash 768751303, now seen corresponding path program 10 times [2022-01-18 06:05:38,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:38,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802379045] [2022-01-18 06:05:38,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:38,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:38,931 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:38,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:38,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802379045] [2022-01-18 06:05:38,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802379045] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:38,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322353434] [2022-01-18 06:05:38,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:05:38,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:38,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:38,933 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 06:05:38,934 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 06:05:38,957 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:05:38,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:05:38,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 06:05:38,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:39,003 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:39,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:39,043 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:39,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322353434] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:39,043 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:39,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 06:05:39,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059364376] [2022-01-18 06:05:39,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:39,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 06:05:39,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:39,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 06:05:39,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-18 06:05:39,044 INFO L87 Difference]: Start difference. First operand 167 states and 342 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:39,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:39,068 INFO L93 Difference]: Finished difference Result 333 states and 673 transitions. [2022-01-18 06:05:39,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 06:05:39,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 06:05:39,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:39,070 INFO L225 Difference]: With dead ends: 333 [2022-01-18 06:05:39,070 INFO L226 Difference]: Without dead ends: 329 [2022-01-18 06:05:39,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 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 06:05:39,071 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 69 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:39,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 48 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:05:39,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-01-18 06:05:39,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 207. [2022-01-18 06:05:39,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 2.1116504854368934) internal successors, (435), 206 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:39,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 435 transitions. [2022-01-18 06:05:39,077 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 435 transitions. Word has length 24 [2022-01-18 06:05:39,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:39,077 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 435 transitions. [2022-01-18 06:05:39,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:39,077 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 435 transitions. [2022-01-18 06:05:39,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:05:39,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:39,079 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:39,097 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 06:05:39,288 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 06:05:39,288 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:39,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:39,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1202293654, now seen corresponding path program 11 times [2022-01-18 06:05:39,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:39,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759484270] [2022-01-18 06:05:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:39,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:05:39,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:39,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759484270] [2022-01-18 06:05:39,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759484270] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:39,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462832803] [2022-01-18 06:05:39,477 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:05:39,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:39,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:39,478 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 06:05:39,479 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 06:05:39,509 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 06:05:39,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:05:39,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 06:05:39,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:39,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:39,838 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:39,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:39,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:39,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:39,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:39,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:39,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:39,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:39,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:39,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:39,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:39,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:39,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:39,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:39,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:39,848 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2022-01-18 06:05:39,878 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:39,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:40,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:40,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:40,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:40,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:40,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:40,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:40,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:40,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:40,235 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:40,235 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:40,235 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:40,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:40,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:40,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:40,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:40,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:40,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:40,239 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:40,269 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:05:40,270 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 06:05:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:40,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462832803] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:40,488 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:40,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 28 [2022-01-18 06:05:40,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993694502] [2022-01-18 06:05:40,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:40,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-18 06:05:40,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:40,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-18 06:05:40,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-01-18 06:05:40,489 INFO L87 Difference]: Start difference. First operand 207 states and 435 transitions. Second operand has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 28 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 06:05:41,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:41,368 INFO L93 Difference]: Finished difference Result 828 states and 1696 transitions. [2022-01-18 06:05:41,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 06:05:41,368 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 28 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 27 [2022-01-18 06:05:41,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:41,372 INFO L225 Difference]: With dead ends: 828 [2022-01-18 06:05:41,372 INFO L226 Difference]: Without dead ends: 608 [2022-01-18 06:05:41,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=396, Invalid=1674, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 06:05:41,374 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 271 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:41,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 659 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 559 Invalid, 0 Unknown, 86 Unchecked, 0.3s Time] [2022-01-18 06:05:41,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-01-18 06:05:41,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 303. [2022-01-18 06:05:41,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 2.198675496688742) internal successors, (664), 302 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:41,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 664 transitions. [2022-01-18 06:05:41,387 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 664 transitions. Word has length 27 [2022-01-18 06:05:41,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:41,387 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 664 transitions. [2022-01-18 06:05:41,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 28 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 06:05:41,388 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 664 transitions. [2022-01-18 06:05:41,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:05:41,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:41,388 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:41,413 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 06:05:41,611 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 06:05:41,611 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:41,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash 722400154, now seen corresponding path program 12 times [2022-01-18 06:05:41,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:41,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700036958] [2022-01-18 06:05:41,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:41,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:41,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:41,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700036958] [2022-01-18 06:05:41,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700036958] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:41,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950477528] [2022-01-18 06:05:41,787 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:05:41,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:41,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:41,791 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 06:05:41,792 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 06:05:41,814 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 06:05:41,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:05:41,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 06:05:41,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:42,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:42,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:42,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:42,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:42,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:42,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:42,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:42,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:42,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:42,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:42,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:42,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:42,186 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 06:05:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:42,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:42,608 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:05:42,608 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 06:05:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:43,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950477528] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:43,001 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:43,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 25 [2022-01-18 06:05:43,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682165296] [2022-01-18 06:05:43,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:43,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 06:05:43,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:43,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 06:05:43,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2022-01-18 06:05:43,002 INFO L87 Difference]: Start difference. First operand 303 states and 664 transitions. Second operand has 26 states, 26 states have (on average 2.5) internal successors, (65), 25 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 06:05:43,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:43,541 INFO L93 Difference]: Finished difference Result 786 states and 1699 transitions. [2022-01-18 06:05:43,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 06:05:43,542 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 25 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 27 [2022-01-18 06:05:43,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:43,545 INFO L225 Difference]: With dead ends: 786 [2022-01-18 06:05:43,545 INFO L226 Difference]: Without dead ends: 721 [2022-01-18 06:05:43,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=302, Invalid=1258, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 06:05:43,546 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 149 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:43,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 421 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 335 Invalid, 0 Unknown, 104 Unchecked, 0.2s Time] [2022-01-18 06:05:43,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-01-18 06:05:43,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 267. [2022-01-18 06:05:43,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 2.0977443609022557) internal successors, (558), 266 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:43,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 558 transitions. [2022-01-18 06:05:43,555 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 558 transitions. Word has length 27 [2022-01-18 06:05:43,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:43,555 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 558 transitions. [2022-01-18 06:05:43,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 25 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 06:05:43,555 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 558 transitions. [2022-01-18 06:05:43,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:05:43,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:43,556 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:43,579 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 06:05:43,774 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 06:05:43,774 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:43,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:43,774 INFO L85 PathProgramCache]: Analyzing trace with hash 258366058, now seen corresponding path program 13 times [2022-01-18 06:05:43,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:43,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971421526] [2022-01-18 06:05:43,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:43,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:43,938 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:43,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:43,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971421526] [2022-01-18 06:05:43,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971421526] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:43,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787370446] [2022-01-18 06:05:43,939 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:05:43,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:43,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:43,940 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 06:05:43,940 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 06:05:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:43,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 06:05:43,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:44,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:44,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:44,321 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:44,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:44,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:44,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:44,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:44,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:44,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:44,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:44,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:44,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:44,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:44,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:44,328 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 06:05:44,347 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:44,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:44,710 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:05:44,711 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 06:05:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:44,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787370446] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:44,921 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:44,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-01-18 06:05:44,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129709375] [2022-01-18 06:05:44,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:44,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 06:05:44,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:44,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 06:05:44,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2022-01-18 06:05:44,922 INFO L87 Difference]: Start difference. First operand 267 states and 558 transitions. Second operand has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 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 06:05:45,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:45,250 INFO L93 Difference]: Finished difference Result 561 states and 1187 transitions. [2022-01-18 06:05:45,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 06:05:45,251 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 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 27 [2022-01-18 06:05:45,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:45,253 INFO L225 Difference]: With dead ends: 561 [2022-01-18 06:05:45,253 INFO L226 Difference]: Without dead ends: 527 [2022-01-18 06:05:45,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=1030, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:05:45,254 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 147 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:45,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 344 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 218 Invalid, 0 Unknown, 37 Unchecked, 0.2s Time] [2022-01-18 06:05:45,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-01-18 06:05:45,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 276. [2022-01-18 06:05:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 2.090909090909091) internal successors, (575), 275 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:45,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 575 transitions. [2022-01-18 06:05:45,261 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 575 transitions. Word has length 27 [2022-01-18 06:05:45,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:45,262 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 575 transitions. [2022-01-18 06:05:45,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 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 06:05:45,262 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 575 transitions. [2022-01-18 06:05:45,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:05:45,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:45,263 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:45,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-01-18 06:05:45,476 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 06:05:45,476 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:45,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:45,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1292581990, now seen corresponding path program 14 times [2022-01-18 06:05:45,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:45,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614559495] [2022-01-18 06:05:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:45,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:45,661 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:45,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:45,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614559495] [2022-01-18 06:05:45,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614559495] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:45,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987524349] [2022-01-18 06:05:45,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:05:45,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:45,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:45,663 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 06:05:45,664 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 06:05:45,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:05:45,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:05:45,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 06:05:45,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:45,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:45,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:45,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:45,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:45,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:45,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:45,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:45,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:45,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:45,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:45,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:45,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:45,997 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 06:05:46,017 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:46,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:46,396 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:05:46,397 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 06:05:46,784 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:46,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987524349] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:46,785 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:46,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 24 [2022-01-18 06:05:46,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568569896] [2022-01-18 06:05:46,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:46,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 06:05:46,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:46,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 06:05:46,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2022-01-18 06:05:46,786 INFO L87 Difference]: Start difference. First operand 276 states and 575 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:47,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:47,637 INFO L93 Difference]: Finished difference Result 1378 states and 2828 transitions. [2022-01-18 06:05:47,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 06:05:47,638 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:05:47,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:47,641 INFO L225 Difference]: With dead ends: 1378 [2022-01-18 06:05:47,641 INFO L226 Difference]: Without dead ends: 1124 [2022-01-18 06:05:47,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=348, Invalid=1722, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 06:05:47,642 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 292 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:47,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 702 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 641 Invalid, 0 Unknown, 89 Unchecked, 0.3s Time] [2022-01-18 06:05:47,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-01-18 06:05:47,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 483. [2022-01-18 06:05:47,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 2.2053941908713695) internal successors, (1063), 482 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:47,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 1063 transitions. [2022-01-18 06:05:47,657 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 1063 transitions. Word has length 27 [2022-01-18 06:05:47,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:47,657 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 1063 transitions. [2022-01-18 06:05:47,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:47,657 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 1063 transitions. [2022-01-18 06:05:47,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:05:47,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:47,658 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:47,681 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 06:05:47,881 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 06:05:47,881 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:47,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:47,882 INFO L85 PathProgramCache]: Analyzing trace with hash 168077722, now seen corresponding path program 15 times [2022-01-18 06:05:47,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:47,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198417833] [2022-01-18 06:05:47,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:47,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:48,048 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:48,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:48,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198417833] [2022-01-18 06:05:48,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198417833] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:48,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258965759] [2022-01-18 06:05:48,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:05:48,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:48,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:48,049 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 06:05:48,051 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 06:05:48,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 06:05:48,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:05:48,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 06:05:48,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:48,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:48,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:48,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:48,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:48,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:48,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:48,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:48,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:48,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:48,399 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:48,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:48,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:48,401 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:48,402 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 06:05:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:48,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:48,788 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:05:48,788 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 06:05:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:49,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258965759] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:49,253 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:49,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-18 06:05:49,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389100034] [2022-01-18 06:05:49,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:49,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 06:05:49,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:49,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 06:05:49,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2022-01-18 06:05:49,254 INFO L87 Difference]: Start difference. First operand 483 states and 1063 transitions. Second operand has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:49,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:49,639 INFO L93 Difference]: Finished difference Result 1102 states and 2399 transitions. [2022-01-18 06:05:49,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 06:05:49,640 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 06:05:49,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:49,643 INFO L225 Difference]: With dead ends: 1102 [2022-01-18 06:05:49,643 INFO L226 Difference]: Without dead ends: 984 [2022-01-18 06:05:49,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=224, Invalid=966, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 06:05:49,644 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 167 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:49,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 547 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 428 Invalid, 0 Unknown, 138 Unchecked, 0.2s Time] [2022-01-18 06:05:49,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-18 06:05:49,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 557. [2022-01-18 06:05:49,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 2.221223021582734) internal successors, (1235), 556 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:49,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 1235 transitions. [2022-01-18 06:05:49,660 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 1235 transitions. Word has length 27 [2022-01-18 06:05:49,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:49,660 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 1235 transitions. [2022-01-18 06:05:49,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:49,660 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 1235 transitions. [2022-01-18 06:05:49,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:05:49,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:49,661 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:49,687 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 06:05:49,879 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 06:05:49,879 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:49,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:49,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1021849130, now seen corresponding path program 16 times [2022-01-18 06:05:49,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:49,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197082080] [2022-01-18 06:05:49,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:49,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:50,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:50,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197082080] [2022-01-18 06:05:50,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197082080] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:50,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542318463] [2022-01-18 06:05:50,056 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:05:50,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:50,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:50,060 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 06:05:50,061 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 06:05:50,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:05:50,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:05:50,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 06:05:50,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:50,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:50,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:50,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:50,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:50,433 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:50,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:50,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:50,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:50,435 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 06:05:50,461 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:50,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:50,836 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:05:50,836 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 06:05:51,184 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:51,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542318463] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:51,184 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:51,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 23 [2022-01-18 06:05:51,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211046881] [2022-01-18 06:05:51,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:51,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 06:05:51,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:51,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 06:05:51,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-01-18 06:05:51,185 INFO L87 Difference]: Start difference. First operand 557 states and 1235 transitions. Second operand has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 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 06:05:51,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:51,789 INFO L93 Difference]: Finished difference Result 1295 states and 2746 transitions. [2022-01-18 06:05:51,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 06:05:51,789 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 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 27 [2022-01-18 06:05:51,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:51,793 INFO L225 Difference]: With dead ends: 1295 [2022-01-18 06:05:51,793 INFO L226 Difference]: Without dead ends: 1081 [2022-01-18 06:05:51,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=242, Invalid=1018, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:05:51,794 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 245 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:51,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 725 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 684 Invalid, 0 Unknown, 48 Unchecked, 0.3s Time] [2022-01-18 06:05:51,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-01-18 06:05:51,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 599. [2022-01-18 06:05:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 598 states have (on average 2.222408026755853) internal successors, (1329), 598 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:51,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 1329 transitions. [2022-01-18 06:05:51,809 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 1329 transitions. Word has length 27 [2022-01-18 06:05:51,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:51,809 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 1329 transitions. [2022-01-18 06:05:51,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 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 06:05:51,810 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 1329 transitions. [2022-01-18 06:05:51,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:05:51,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:51,810 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:51,833 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 06:05:52,023 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 06:05:52,023 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:52,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:52,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1812458454, now seen corresponding path program 17 times [2022-01-18 06:05:52,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:52,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935590956] [2022-01-18 06:05:52,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:52,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:52,219 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:52,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:52,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935590956] [2022-01-18 06:05:52,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935590956] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:52,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622974348] [2022-01-18 06:05:52,219 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:05:52,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:52,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:52,224 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 06:05:52,225 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 06:05:52,254 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 06:05:52,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:05:52,255 WARN L261 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 06:05:52,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:52,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:52,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:52,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:52,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:52,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:52,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:52,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:52,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:52,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:52,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:52,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:52,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:52,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,543 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 20 [2022-01-18 06:05:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:52,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:52,917 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,917 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,919 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,923 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,926 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,926 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:52,959 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:05:52,960 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 06:05:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:53,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622974348] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:53,119 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:53,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-01-18 06:05:53,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761921837] [2022-01-18 06:05:53,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:53,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 06:05:53,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:53,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 06:05:53,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=675, Unknown=0, NotChecked=0, Total=870 [2022-01-18 06:05:53,120 INFO L87 Difference]: Start difference. First operand 599 states and 1329 transitions. Second operand has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 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 06:05:54,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:54,719 INFO L93 Difference]: Finished difference Result 1349 states and 2863 transitions. [2022-01-18 06:05:54,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 06:05:54,720 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 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 27 [2022-01-18 06:05:54,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:54,723 INFO L225 Difference]: With dead ends: 1349 [2022-01-18 06:05:54,723 INFO L226 Difference]: Without dead ends: 1184 [2022-01-18 06:05:54,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=758, Invalid=3148, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 06:05:54,724 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 274 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:54,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 783 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 547 Invalid, 0 Unknown, 199 Unchecked, 0.3s Time] [2022-01-18 06:05:54,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-01-18 06:05:54,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 724. [2022-01-18 06:05:54,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 2.2378976486860305) internal successors, (1618), 723 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1618 transitions. [2022-01-18 06:05:54,741 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1618 transitions. Word has length 27 [2022-01-18 06:05:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:54,742 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 1618 transitions. [2022-01-18 06:05:54,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 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 06:05:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1618 transitions. [2022-01-18 06:05:54,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 06:05:54,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:54,743 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:54,766 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 06:05:54,966 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 06:05:54,966 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:54,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash 982353754, now seen corresponding path program 18 times [2022-01-18 06:05:54,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:54,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89048430] [2022-01-18 06:05:54,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:54,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:55,140 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:55,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:55,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89048430] [2022-01-18 06:05:55,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89048430] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:55,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504126942] [2022-01-18 06:05:55,140 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:05:55,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:55,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:55,141 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 06:05:55,143 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 06:05:55,162 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 06:05:55,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:05:55,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 06:05:55,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:55,412 INFO L353 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-01-18 06:05:55,413 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 71 treesize of output 29 [2022-01-18 06:05:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:55,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:55,827 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:05:55,828 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 06:05:56,271 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:56,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504126942] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:56,271 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:56,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-01-18 06:05:56,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895302981] [2022-01-18 06:05:56,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:56,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 06:05:56,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:56,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 06:05:56,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-01-18 06:05:56,272 INFO L87 Difference]: Start difference. First operand 724 states and 1618 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 23 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 06:05:56,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:56,610 INFO L93 Difference]: Finished difference Result 1075 states and 2357 transitions. [2022-01-18 06:05:56,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 06:05:56,612 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 23 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 27 [2022-01-18 06:05:56,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:56,615 INFO L225 Difference]: With dead ends: 1075 [2022-01-18 06:05:56,615 INFO L226 Difference]: Without dead ends: 1045 [2022-01-18 06:05:56,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:05:56,615 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 171 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:56,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 478 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 06:05:56,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2022-01-18 06:05:56,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 729. [2022-01-18 06:05:56,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 728 states have (on average 2.23489010989011) internal successors, (1627), 728 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:56,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1627 transitions. [2022-01-18 06:05:56,631 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1627 transitions. Word has length 27 [2022-01-18 06:05:56,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:56,631 INFO L470 AbstractCegarLoop]: Abstraction has 729 states and 1627 transitions. [2022-01-18 06:05:56,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 23 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 06:05:56,631 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1627 transitions. [2022-01-18 06:05:56,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 06:05:56,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:56,632 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:56,655 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 06:05:56,849 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 06:05:56,849 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:56,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:56,850 INFO L85 PathProgramCache]: Analyzing trace with hash 218353775, now seen corresponding path program 19 times [2022-01-18 06:05:56,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:56,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424977567] [2022-01-18 06:05:56,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:56,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:56,889 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:56,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:56,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424977567] [2022-01-18 06:05:56,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424977567] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:56,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536378295] [2022-01-18 06:05:56,889 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:05:56,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:56,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:56,890 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 06:05:56,891 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 06:05:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:56,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 06:05:56,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:56,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:57,004 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:57,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536378295] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:57,005 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:57,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-01-18 06:05:57,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513099129] [2022-01-18 06:05:57,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:57,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 06:05:57,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:57,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 06:05:57,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-18 06:05:57,006 INFO L87 Difference]: Start difference. First operand 729 states and 1627 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:57,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:57,040 INFO L93 Difference]: Finished difference Result 1113 states and 2488 transitions. [2022-01-18 06:05:57,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 06:05:57,041 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 06:05:57,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:57,044 INFO L225 Difference]: With dead ends: 1113 [2022-01-18 06:05:57,044 INFO L226 Difference]: Without dead ends: 1108 [2022-01-18 06:05:57,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 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 06:05:57,044 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 61 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:57,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 69 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:05:57,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2022-01-18 06:05:57,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 920. [2022-01-18 06:05:57,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 919 states have (on average 2.2807399347116433) internal successors, (2096), 919 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:57,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 2096 transitions. [2022-01-18 06:05:57,062 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 2096 transitions. Word has length 28 [2022-01-18 06:05:57,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:57,062 INFO L470 AbstractCegarLoop]: Abstraction has 920 states and 2096 transitions. [2022-01-18 06:05:57,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:57,062 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 2096 transitions. [2022-01-18 06:05:57,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:05:57,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:57,063 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:57,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 06:05:57,279 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 06:05:57,279 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:57,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:57,279 INFO L85 PathProgramCache]: Analyzing trace with hash -847195769, now seen corresponding path program 20 times [2022-01-18 06:05:57,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:57,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949580705] [2022-01-18 06:05:57,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:57,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:57,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:57,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949580705] [2022-01-18 06:05:57,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949580705] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:57,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198896141] [2022-01-18 06:05:57,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:05:57,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:57,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:57,458 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 06:05:57,458 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 06:05:57,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:05:57,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:05:57,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 06:05:57,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:57,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:57,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:57,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:57,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:57,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:57,840 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:57,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:57,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:57,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:57,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:57,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:57,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:57,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:57,846 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 06:05:57,865 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:57,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:05:58,249 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:05:58,250 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 06:05:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:58,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198896141] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:05:58,587 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:05:58,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-01-18 06:05:58,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588897798] [2022-01-18 06:05:58,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:05:58,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 06:05:58,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:05:58,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 06:05:58,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2022-01-18 06:05:58,589 INFO L87 Difference]: Start difference. First operand 920 states and 2096 transitions. Second operand has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 26 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 06:05:58,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:05:58,872 INFO L93 Difference]: Finished difference Result 1395 states and 3100 transitions. [2022-01-18 06:05:58,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 06:05:58,872 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 26 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 30 [2022-01-18 06:05:58,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:05:58,877 INFO L225 Difference]: With dead ends: 1395 [2022-01-18 06:05:58,877 INFO L226 Difference]: Without dead ends: 1365 [2022-01-18 06:05:58,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=217, Invalid=973, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 06:05:58,878 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 143 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:05:58,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 391 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 262 Invalid, 0 Unknown, 68 Unchecked, 0.1s Time] [2022-01-18 06:05:58,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2022-01-18 06:05:58,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 890. [2022-01-18 06:05:58,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 889 states have (on average 2.280089988751406) internal successors, (2027), 889 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:05:58,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 2027 transitions. [2022-01-18 06:05:58,896 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 2027 transitions. Word has length 30 [2022-01-18 06:05:58,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:05:58,896 INFO L470 AbstractCegarLoop]: Abstraction has 890 states and 2027 transitions. [2022-01-18 06:05:58,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 26 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 06:05:58,897 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 2027 transitions. [2022-01-18 06:05:58,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:05:58,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:05:58,898 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:05:58,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-01-18 06:05:59,111 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 06:05:59,111 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:05:59,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:05:59,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1977486249, now seen corresponding path program 21 times [2022-01-18 06:05:59,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:05:59,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776701930] [2022-01-18 06:05:59,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:05:59,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:05:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:05:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:59,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:05:59,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776701930] [2022-01-18 06:05:59,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776701930] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:05:59,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984238599] [2022-01-18 06:05:59,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:05:59,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:05:59,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:05:59,279 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 06:05:59,279 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 06:05:59,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 06:05:59,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:05:59,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-18 06:05:59,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:05:59,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:59,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:59,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:59,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:59,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:59,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:59,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:59,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:59,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:59,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:59,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:05:59,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:59,647 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:05:59,647 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 29 [2022-01-18 06:05:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:05:59,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:00,048 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:06:00,049 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 78 treesize of output 188 [2022-01-18 06:06:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:00,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984238599] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:00,482 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:00,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-18 06:06:00,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409240853] [2022-01-18 06:06:00,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:00,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 06:06:00,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:00,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 06:06:00,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2022-01-18 06:06:00,484 INFO L87 Difference]: Start difference. First operand 890 states and 2027 transitions. Second operand has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:00,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:00,808 INFO L93 Difference]: Finished difference Result 1330 states and 2969 transitions. [2022-01-18 06:06:00,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 06:06:00,808 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:06:00,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:00,812 INFO L225 Difference]: With dead ends: 1330 [2022-01-18 06:06:00,812 INFO L226 Difference]: Without dead ends: 1308 [2022-01-18 06:06:00,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=924, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 06:06:00,813 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 131 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:00,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 465 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 258 Invalid, 0 Unknown, 142 Unchecked, 0.1s Time] [2022-01-18 06:06:00,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2022-01-18 06:06:00,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 965. [2022-01-18 06:06:00,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 964 states have (on average 2.3215767634854774) internal successors, (2238), 964 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 2238 transitions. [2022-01-18 06:06:00,833 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 2238 transitions. Word has length 30 [2022-01-18 06:06:00,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:00,833 INFO L470 AbstractCegarLoop]: Abstraction has 965 states and 2238 transitions. [2022-01-18 06:06:00,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 25 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:00,833 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 2238 transitions. [2022-01-18 06:06:00,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:06:00,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:00,835 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:00,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 06:06:01,055 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 06:06:01,056 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:06:01,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:06:01,056 INFO L85 PathProgramCache]: Analyzing trace with hash 919637303, now seen corresponding path program 22 times [2022-01-18 06:06:01,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:06:01,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126448934] [2022-01-18 06:06:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:06:01,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:06:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:01,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:06:01,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126448934] [2022-01-18 06:06:01,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126448934] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:06:01,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338798485] [2022-01-18 06:06:01,238 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:06:01,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:06:01,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:06:01,240 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 06:06:01,265 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 06:06:01,272 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:06:01,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:06:01,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 06:06:01,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:06:01,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:01,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:01,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:01,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:01,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:01,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:01,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:01,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:01,621 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 06:06:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:01,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:02,097 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:06:02,098 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 06:06:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:02,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338798485] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:02,591 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:02,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 06:06:02,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414323702] [2022-01-18 06:06:02,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:02,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 06:06:02,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:02,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 06:06:02,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2022-01-18 06:06:02,592 INFO L87 Difference]: Start difference. First operand 965 states and 2238 transitions. Second operand has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:03,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:03,121 INFO L93 Difference]: Finished difference Result 1623 states and 3666 transitions. [2022-01-18 06:06:03,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 06:06:03,121 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:06:03,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:03,127 INFO L225 Difference]: With dead ends: 1623 [2022-01-18 06:06:03,127 INFO L226 Difference]: Without dead ends: 1549 [2022-01-18 06:06:03,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=306, Invalid=1176, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 06:06:03,128 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 149 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:03,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 507 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 348 Invalid, 0 Unknown, 90 Unchecked, 0.2s Time] [2022-01-18 06:06:03,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2022-01-18 06:06:03,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 938. [2022-01-18 06:06:03,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 937 states have (on average 2.312700106723586) internal successors, (2167), 937 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:03,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 2167 transitions. [2022-01-18 06:06:03,149 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 2167 transitions. Word has length 30 [2022-01-18 06:06:03,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:03,149 INFO L470 AbstractCegarLoop]: Abstraction has 938 states and 2167 transitions. [2022-01-18 06:06:03,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:03,149 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 2167 transitions. [2022-01-18 06:06:03,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:06:03,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:03,151 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:03,179 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 06:06:03,363 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 06:06:03,363 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:06:03,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:06:03,364 INFO L85 PathProgramCache]: Analyzing trace with hash 130006983, now seen corresponding path program 23 times [2022-01-18 06:06:03,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:06:03,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056285387] [2022-01-18 06:06:03,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:06:03,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:06:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:03,531 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:03,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:06:03,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056285387] [2022-01-18 06:06:03,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056285387] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:06:03,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833901360] [2022-01-18 06:06:03,531 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:06:03,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:06:03,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:06:03,532 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 06:06:03,533 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 06:06:03,562 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 06:06:03,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:06:03,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 06:06:03,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:06:03,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:03,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:03,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:03,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:03,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:03,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:03,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:03,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:03,892 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 06:06:03,911 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:03,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:04,286 INFO L353 Elim1Store]: treesize reduction 156, result has 49.5 percent of original size [2022-01-18 06:06:04,287 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 06:06:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:04,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833901360] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:04,782 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:04,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 06:06:04,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857882082] [2022-01-18 06:06:04,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:04,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 06:06:04,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:04,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 06:06:04,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2022-01-18 06:06:04,783 INFO L87 Difference]: Start difference. First operand 938 states and 2167 transitions. Second operand has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:05,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:05,309 INFO L93 Difference]: Finished difference Result 1547 states and 3470 transitions. [2022-01-18 06:06:05,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 06:06:05,310 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:06:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:05,315 INFO L225 Difference]: With dead ends: 1547 [2022-01-18 06:06:05,315 INFO L226 Difference]: Without dead ends: 1487 [2022-01-18 06:06:05,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=353, Invalid=1453, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 06:06:05,316 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 192 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:05,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 430 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 240 Invalid, 0 Unknown, 126 Unchecked, 0.1s Time] [2022-01-18 06:06:05,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2022-01-18 06:06:05,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 892. [2022-01-18 06:06:05,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 2.313131313131313) internal successors, (2061), 891 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:05,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 2061 transitions. [2022-01-18 06:06:05,337 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 2061 transitions. Word has length 30 [2022-01-18 06:06:05,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:05,338 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 2061 transitions. [2022-01-18 06:06:05,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:05,338 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 2061 transitions. [2022-01-18 06:06:05,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 06:06:05,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:05,339 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:05,366 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 06:06:05,563 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 06:06:05,563 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:06:05,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:06:05,564 INFO L85 PathProgramCache]: Analyzing trace with hash -2076351950, now seen corresponding path program 24 times [2022-01-18 06:06:05,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:06:05,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242517564] [2022-01-18 06:06:05,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:06:05,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:06:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:05,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:06:05,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242517564] [2022-01-18 06:06:05,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242517564] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:06:05,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034369918] [2022-01-18 06:06:05,773 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:06:05,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:06:05,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:06:05,776 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 06:06:05,777 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 06:06:05,804 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 06:06:05,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:06:05,805 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-18 06:06:05,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:06:06,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:06,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:06,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:06,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:06,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:06,247 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 06:06:06,266 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:06,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:06,847 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:06:06,848 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 06:06:07,409 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:07,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034369918] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:07,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:07,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 31 [2022-01-18 06:06:07,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843907917] [2022-01-18 06:06:07,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:07,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:06:07,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:07,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:06:07,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=828, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:06:07,410 INFO L87 Difference]: Start difference. First operand 892 states and 2061 transitions. Second operand has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:08,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:08,499 INFO L93 Difference]: Finished difference Result 2169 states and 4810 transitions. [2022-01-18 06:06:08,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 06:06:08,499 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have 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 06:06:08,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:08,505 INFO L225 Difference]: With dead ends: 2169 [2022-01-18 06:06:08,506 INFO L226 Difference]: Without dead ends: 2112 [2022-01-18 06:06:08,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1400 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=691, Invalid=3731, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 06:06:08,508 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 252 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:08,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 696 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 525 Invalid, 0 Unknown, 129 Unchecked, 0.3s Time] [2022-01-18 06:06:08,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2022-01-18 06:06:08,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 1058. [2022-01-18 06:06:08,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 1057 states have (on average 2.3103122043519395) internal successors, (2442), 1057 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:08,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 2442 transitions. [2022-01-18 06:06:08,534 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 2442 transitions. Word has length 31 [2022-01-18 06:06:08,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:08,534 INFO L470 AbstractCegarLoop]: Abstraction has 1058 states and 2442 transitions. [2022-01-18 06:06:08,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:08,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 2442 transitions. [2022-01-18 06:06:08,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 06:06:08,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:08,536 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:08,561 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 06:06:08,751 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 06:06:08,751 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:06:08,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:06:08,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1093419102, now seen corresponding path program 25 times [2022-01-18 06:06:08,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:06:08,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961551688] [2022-01-18 06:06:08,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:06:08,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:06:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:08,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:06:08,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961551688] [2022-01-18 06:06:08,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961551688] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:06:08,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254392015] [2022-01-18 06:06:08,950 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:06:08,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:06:08,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:06:08,952 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 06:06:08,980 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 06:06:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:08,985 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-18 06:06:08,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:06:09,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:09,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:09,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:09,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:09,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:09,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:09,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:09,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:09,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:09,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:09,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:09,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:09,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:09,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:09,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:09,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:09,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:09,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:09,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:09,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:09,484 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 06:06:09,503 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:09,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:10,066 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:06:10,066 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 06:06:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:10,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254392015] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:10,815 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:10,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 30 [2022-01-18 06:06:10,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243759773] [2022-01-18 06:06:10,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:10,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:06:10,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:10,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:06:10,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:06:10,816 INFO L87 Difference]: Start difference. First operand 1058 states and 2442 transitions. Second operand has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 30 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:12,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:12,034 INFO L93 Difference]: Finished difference Result 2806 states and 6196 transitions. [2022-01-18 06:06:12,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 06:06:12,034 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 30 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have 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 06:06:12,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:12,041 INFO L225 Difference]: With dead ends: 2806 [2022-01-18 06:06:12,042 INFO L226 Difference]: Without dead ends: 2425 [2022-01-18 06:06:12,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=535, Invalid=2657, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 06:06:12,043 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 368 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:12,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 995 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 962 Invalid, 0 Unknown, 84 Unchecked, 0.5s Time] [2022-01-18 06:06:12,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2022-01-18 06:06:12,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1226. [2022-01-18 06:06:12,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 2.2946938775510204) internal successors, (2811), 1225 states have internal predecessors, (2811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:12,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 2811 transitions. [2022-01-18 06:06:12,071 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 2811 transitions. Word has length 31 [2022-01-18 06:06:12,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:12,071 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 2811 transitions. [2022-01-18 06:06:12,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 30 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:12,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 2811 transitions. [2022-01-18 06:06:12,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 06:06:12,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:12,072 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:12,093 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 06:06:12,286 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 06:06:12,286 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:06:12,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:06:12,287 INFO L85 PathProgramCache]: Analyzing trace with hash 31141282, now seen corresponding path program 26 times [2022-01-18 06:06:12,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:06:12,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242152550] [2022-01-18 06:06:12,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:06:12,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:06:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:12,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:06:12,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242152550] [2022-01-18 06:06:12,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242152550] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:06:12,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129884866] [2022-01-18 06:06:12,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:06:12,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:06:12,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:06:12,499 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 06:06:12,500 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 06:06:12,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:06:12,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:06:12,521 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-18 06:06:12,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:06:12,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:12,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:12,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,966 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:12,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:12,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:12,967 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 06:06:12,987 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:12,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:13,595 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:06:13,595 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 06:06:13,984 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:13,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129884866] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:13,985 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:13,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 31 [2022-01-18 06:06:13,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784986392] [2022-01-18 06:06:13,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:13,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:06:13,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:13,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:06:13,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:06:13,986 INFO L87 Difference]: Start difference. First operand 1226 states and 2811 transitions. Second operand has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:14,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:14,747 INFO L93 Difference]: Finished difference Result 2441 states and 5507 transitions. [2022-01-18 06:06:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 06:06:14,747 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have 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 06:06:14,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:14,752 INFO L225 Difference]: With dead ends: 2441 [2022-01-18 06:06:14,752 INFO L226 Difference]: Without dead ends: 2260 [2022-01-18 06:06:14,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=488, Invalid=2268, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 06:06:14,754 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 256 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:14,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 617 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 464 Invalid, 0 Unknown, 164 Unchecked, 0.2s Time] [2022-01-18 06:06:14,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2022-01-18 06:06:14,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 788. [2022-01-18 06:06:14,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 2.1880559085133418) internal successors, (1722), 787 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:14,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1722 transitions. [2022-01-18 06:06:14,776 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1722 transitions. Word has length 31 [2022-01-18 06:06:14,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:14,776 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 1722 transitions. [2022-01-18 06:06:14,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:14,776 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1722 transitions. [2022-01-18 06:06:14,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 06:06:14,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:14,777 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:14,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-01-18 06:06:14,987 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 06:06:14,987 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:06:14,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:06:14,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1216036466, now seen corresponding path program 27 times [2022-01-18 06:06:14,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:06:14,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686147753] [2022-01-18 06:06:14,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:06:14,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:06:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:15,219 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:15,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:06:15,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686147753] [2022-01-18 06:06:15,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686147753] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:06:15,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270374550] [2022-01-18 06:06:15,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:06:15,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:06:15,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:06:15,221 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 06:06:15,222 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 06:06:15,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 06:06:15,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:06:15,248 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-18 06:06:15,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:06:15,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:15,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:15,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:15,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:15,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:15,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:15,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:15,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:15,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:15,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:15,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:15,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:15,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:15,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:15,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:15,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:15,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:15,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:15,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:15,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:15,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:15,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:15,710 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 06:06:15,728 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:15,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:16,300 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:06:16,300 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 06:06:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:17,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270374550] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:17,005 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:17,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 31 [2022-01-18 06:06:17,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556189154] [2022-01-18 06:06:17,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:17,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:06:17,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:06:17,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=809, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:06:17,006 INFO L87 Difference]: Start difference. First operand 788 states and 1722 transitions. Second operand has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:18,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:18,030 INFO L93 Difference]: Finished difference Result 1940 states and 4106 transitions. [2022-01-18 06:06:18,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 06:06:18,031 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have 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 06:06:18,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:18,035 INFO L225 Difference]: With dead ends: 1940 [2022-01-18 06:06:18,035 INFO L226 Difference]: Without dead ends: 1621 [2022-01-18 06:06:18,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=432, Invalid=2220, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 06:06:18,037 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 370 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:18,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 974 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 882 Invalid, 0 Unknown, 58 Unchecked, 0.5s Time] [2022-01-18 06:06:18,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2022-01-18 06:06:18,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 964. [2022-01-18 06:06:18,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 963 states have (on average 2.2242990654205608) internal successors, (2142), 963 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:18,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 2142 transitions. [2022-01-18 06:06:18,052 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 2142 transitions. Word has length 31 [2022-01-18 06:06:18,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:18,052 INFO L470 AbstractCegarLoop]: Abstraction has 964 states and 2142 transitions. [2022-01-18 06:06:18,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:18,052 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 2142 transitions. [2022-01-18 06:06:18,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 06:06:18,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:18,053 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:18,070 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 06:06:18,255 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 06:06:18,255 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:06:18,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:06:18,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1954370446, now seen corresponding path program 28 times [2022-01-18 06:06:18,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:06:18,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122454093] [2022-01-18 06:06:18,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:06:18,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:06:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:18,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:06:18,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122454093] [2022-01-18 06:06:18,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122454093] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:06:18,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97693479] [2022-01-18 06:06:18,469 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:06:18,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:06:18,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:06:18,470 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 06:06:18,471 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 06:06:18,491 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:06:18,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:06:18,492 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-18 06:06:18,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:06:18,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:18,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:18,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:18,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:18,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:18,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:18,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:18,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:18,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:18,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:18,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:18,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:18,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:18,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:18,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:18,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:18,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:18,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:18,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:18,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:18,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:18,946 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 06:06:18,965 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:18,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:19,564 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:06:19,564 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 06:06:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:20,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97693479] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:20,116 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:20,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-01-18 06:06:20,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658557321] [2022-01-18 06:06:20,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:20,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 06:06:20,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:20,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 06:06:20,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 06:06:20,117 INFO L87 Difference]: Start difference. First operand 964 states and 2142 transitions. Second operand has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 32 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:21,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:21,332 INFO L93 Difference]: Finished difference Result 2244 states and 4890 transitions. [2022-01-18 06:06:21,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 06:06:21,332 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 32 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have 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 06:06:21,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:21,337 INFO L225 Difference]: With dead ends: 2244 [2022-01-18 06:06:21,337 INFO L226 Difference]: Without dead ends: 2003 [2022-01-18 06:06:21,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=780, Invalid=3642, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 06:06:21,339 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 362 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:21,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 722 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 614 Invalid, 0 Unknown, 165 Unchecked, 0.4s Time] [2022-01-18 06:06:21,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2022-01-18 06:06:21,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 578. [2022-01-18 06:06:21,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 577 states have (on average 2.197573656845754) internal successors, (1268), 577 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:21,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1268 transitions. [2022-01-18 06:06:21,357 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1268 transitions. Word has length 31 [2022-01-18 06:06:21,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:21,357 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 1268 transitions. [2022-01-18 06:06:21,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 32 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:21,357 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1268 transitions. [2022-01-18 06:06:21,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 06:06:21,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:21,359 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:21,383 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 06:06:21,575 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 06:06:21,575 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:06:21,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:06:21,576 INFO L85 PathProgramCache]: Analyzing trace with hash -663106590, now seen corresponding path program 29 times [2022-01-18 06:06:21,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:06:21,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261451090] [2022-01-18 06:06:21,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:06:21,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:06:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:21,788 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:21,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:06:21,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261451090] [2022-01-18 06:06:21,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261451090] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:06:21,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389389362] [2022-01-18 06:06:21,788 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:06:21,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:06:21,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:06:21,789 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 06:06:21,790 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 06:06:21,813 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 06:06:21,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:06:21,814 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 06:06:21,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:06:22,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:22,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:22,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:22,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:22,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:22,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:22,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:22,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:22,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:22,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:22,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:22,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:22,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:22,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:22,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:22,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:22,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:22,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,273 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 06:06:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:22,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:22,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,668 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:22,730 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:06:22,730 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 06:06:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:22,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389389362] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:22,942 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:22,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2022-01-18 06:06:22,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149882023] [2022-01-18 06:06:22,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:22,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 06:06:22,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:22,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 06:06:22,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=926, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 06:06:22,943 INFO L87 Difference]: Start difference. First operand 578 states and 1268 transitions. Second operand has 34 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 33 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:23,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:23,171 INFO L93 Difference]: Finished difference Result 737 states and 1571 transitions. [2022-01-18 06:06:23,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 06:06:23,172 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 33 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have 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 06:06:23,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:23,173 INFO L225 Difference]: With dead ends: 737 [2022-01-18 06:06:23,173 INFO L226 Difference]: Without dead ends: 726 [2022-01-18 06:06:23,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=255, Invalid=1227, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 06:06:23,174 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 112 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:23,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 635 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 182 Invalid, 0 Unknown, 69 Unchecked, 0.1s Time] [2022-01-18 06:06:23,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-01-18 06:06:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 657. [2022-01-18 06:06:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 2.182926829268293) internal successors, (1432), 656 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:23,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1432 transitions. [2022-01-18 06:06:23,183 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1432 transitions. Word has length 31 [2022-01-18 06:06:23,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:23,183 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1432 transitions. [2022-01-18 06:06:23,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 33 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:23,183 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1432 transitions. [2022-01-18 06:06:23,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 06:06:23,184 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:23,184 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:23,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-01-18 06:06:23,384 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 06:06:23,385 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:06:23,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:06:23,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1342373102, now seen corresponding path program 30 times [2022-01-18 06:06:23,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:06:23,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434328758] [2022-01-18 06:06:23,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:06:23,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:06:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:23,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:06:23,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434328758] [2022-01-18 06:06:23,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434328758] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:06:23,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574520177] [2022-01-18 06:06:23,632 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:06:23,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:06:23,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:06:23,633 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 06:06:23,633 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 06:06:23,654 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 06:06:23,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:06:23,655 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 43 conjunts are in the unsatisfiable core [2022-01-18 06:06:23,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:06:24,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:24,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:24,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:24,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:24,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:24,097 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:24,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:24,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:24,098 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:24,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:24,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:24,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:24,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:24,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:24,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:24,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:24,102 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 90 treesize of output 34 [2022-01-18 06:06:24,129 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:24,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:24,725 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:06:24,726 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 06:06:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:25,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574520177] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:25,304 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:25,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-01-18 06:06:25,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56805803] [2022-01-18 06:06:25,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:25,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:06:25,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:25,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:06:25,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:06:25,305 INFO L87 Difference]: Start difference. First operand 657 states and 1432 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 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 06:06:26,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:26,401 INFO L93 Difference]: Finished difference Result 1434 states and 3086 transitions. [2022-01-18 06:06:26,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 06:06:26,402 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 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 31 [2022-01-18 06:06:26,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:26,404 INFO L225 Difference]: With dead ends: 1434 [2022-01-18 06:06:26,404 INFO L226 Difference]: Without dead ends: 1387 [2022-01-18 06:06:26,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=708, Invalid=2832, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 06:06:26,405 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 191 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 241 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:26,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 959 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 606 Invalid, 0 Unknown, 241 Unchecked, 0.3s Time] [2022-01-18 06:06:26,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2022-01-18 06:06:26,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 592. [2022-01-18 06:06:26,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 591 states have (on average 2.179357021996616) internal successors, (1288), 591 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 1288 transitions. [2022-01-18 06:06:26,416 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 1288 transitions. Word has length 31 [2022-01-18 06:06:26,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:26,416 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 1288 transitions. [2022-01-18 06:06:26,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 31 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 06:06:26,416 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 1288 transitions. [2022-01-18 06:06:26,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 06:06:26,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:26,417 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:26,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 06:06:26,617 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 06:06:26,617 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:06:26,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:06:26,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1725856206, now seen corresponding path program 31 times [2022-01-18 06:06:26,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:06:26,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106653725] [2022-01-18 06:06:26,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:06:26,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:06:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 06:06:26,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:06:26,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106653725] [2022-01-18 06:06:26,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106653725] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:06:26,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110885156] [2022-01-18 06:06:26,849 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:06:26,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:06:26,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:06:26,852 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 06:06:26,855 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 06:06:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:26,881 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-18 06:06:26,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:06:27,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:27,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:27,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:27,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:27,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:27,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:27,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:27,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:27,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:27,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:27,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:27,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:27,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:27,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:27,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:27,383 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 06:06:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:27,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:28,072 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:06:28,072 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 06:06:28,919 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:28,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110885156] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:28,919 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:28,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 29 [2022-01-18 06:06:28,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950571713] [2022-01-18 06:06:28,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:28,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 06:06:28,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:28,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 06:06:28,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2022-01-18 06:06:28,920 INFO L87 Difference]: Start difference. First operand 592 states and 1288 transitions. Second operand has 30 states, 30 states have (on average 2.3) internal successors, (69), 29 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 06:06:30,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:30,105 INFO L93 Difference]: Finished difference Result 2141 states and 4533 transitions. [2022-01-18 06:06:30,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 06:06:30,106 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 29 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 31 [2022-01-18 06:06:30,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:30,110 INFO L225 Difference]: With dead ends: 2141 [2022-01-18 06:06:30,110 INFO L226 Difference]: Without dead ends: 1679 [2022-01-18 06:06:30,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=624, Invalid=2916, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 06:06:30,111 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 435 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 191 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:30,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 848 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 760 Invalid, 0 Unknown, 191 Unchecked, 0.4s Time] [2022-01-18 06:06:30,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2022-01-18 06:06:30,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 666. [2022-01-18 06:06:30,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 2.186466165413534) internal successors, (1454), 665 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:30,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1454 transitions. [2022-01-18 06:06:30,126 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1454 transitions. Word has length 31 [2022-01-18 06:06:30,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:30,126 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 1454 transitions. [2022-01-18 06:06:30,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 29 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 06:06:30,127 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1454 transitions. [2022-01-18 06:06:30,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 06:06:30,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:30,128 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:30,146 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 06:06:30,335 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 06:06:30,335 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:06:30,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:06:30,336 INFO L85 PathProgramCache]: Analyzing trace with hash -434592350, now seen corresponding path program 32 times [2022-01-18 06:06:30,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:06:30,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025730377] [2022-01-18 06:06:30,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:06:30,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:06:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:30,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:06:30,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025730377] [2022-01-18 06:06:30,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025730377] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:06:30,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827480591] [2022-01-18 06:06:30,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:06:30,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:06:30,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:06:30,554 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 06:06:30,555 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 06:06:30,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:06:30,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:06:30,581 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-18 06:06:30,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:06:31,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:31,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:31,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:31,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:31,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:31,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:31,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:31,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:31,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:31,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:31,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:31,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:31,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:31,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:31,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:31,011 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 06:06:31,030 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:31,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:31,609 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:06:31,610 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 06:06:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:32,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827480591] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:32,234 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:32,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2022-01-18 06:06:32,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821259240] [2022-01-18 06:06:32,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:32,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 06:06:32,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:32,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 06:06:32,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=763, Unknown=0, NotChecked=0, Total=930 [2022-01-18 06:06:32,235 INFO L87 Difference]: Start difference. First operand 666 states and 1454 transitions. Second operand has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:32,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:32,987 INFO L93 Difference]: Finished difference Result 1451 states and 3127 transitions. [2022-01-18 06:06:32,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 06:06:32,988 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have 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 06:06:32,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:32,991 INFO L225 Difference]: With dead ends: 1451 [2022-01-18 06:06:32,991 INFO L226 Difference]: Without dead ends: 1396 [2022-01-18 06:06:32,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=503, Invalid=2359, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 06:06:32,992 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 222 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 208 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:32,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 658 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 444 Invalid, 0 Unknown, 208 Unchecked, 0.2s Time] [2022-01-18 06:06:32,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2022-01-18 06:06:33,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 691. [2022-01-18 06:06:33,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 2.1782608695652175) internal successors, (1503), 690 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:33,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1503 transitions. [2022-01-18 06:06:33,006 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1503 transitions. Word has length 31 [2022-01-18 06:06:33,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:33,006 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1503 transitions. [2022-01-18 06:06:33,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:33,007 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1503 transitions. [2022-01-18 06:06:33,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 06:06:33,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:33,008 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:33,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-01-18 06:06:33,223 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 06:06:33,223 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:06:33,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:06:33,224 INFO L85 PathProgramCache]: Analyzing trace with hash 23229282, now seen corresponding path program 33 times [2022-01-18 06:06:33,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:06:33,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618102892] [2022-01-18 06:06:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:06:33,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:06:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:33,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:06:33,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618102892] [2022-01-18 06:06:33,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618102892] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:06:33,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544384609] [2022-01-18 06:06:33,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:06:33,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:06:33,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:06:33,437 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 06:06:33,438 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 06:06:33,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 06:06:33,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:06:33,460 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-18 06:06:33,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:06:33,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:33,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:33,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:33,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:33,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:33,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:33,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:33,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:33,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:33,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:33,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:33,847 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 06:06:33,868 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:33,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:34,444 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:06:34,445 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 06:06:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:34,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544384609] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:34,930 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:34,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 28 [2022-01-18 06:06:34,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965996683] [2022-01-18 06:06:34,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:34,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-18 06:06:34,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:34,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-18 06:06:34,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2022-01-18 06:06:34,931 INFO L87 Difference]: Start difference. First operand 691 states and 1503 transitions. Second operand has 29 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 28 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:35,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:35,842 INFO L93 Difference]: Finished difference Result 1827 states and 3810 transitions. [2022-01-18 06:06:35,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 06:06:35,844 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 28 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have 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 06:06:35,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:35,847 INFO L225 Difference]: With dead ends: 1827 [2022-01-18 06:06:35,847 INFO L226 Difference]: Without dead ends: 1522 [2022-01-18 06:06:35,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=405, Invalid=1851, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 06:06:35,848 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 392 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:35,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 868 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 801 Invalid, 0 Unknown, 67 Unchecked, 0.4s Time] [2022-01-18 06:06:35,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2022-01-18 06:06:35,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 826. [2022-01-18 06:06:35,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 2.1866666666666665) internal successors, (1804), 825 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:35,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1804 transitions. [2022-01-18 06:06:35,864 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1804 transitions. Word has length 31 [2022-01-18 06:06:35,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:35,865 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 1804 transitions. [2022-01-18 06:06:35,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 28 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:35,865 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1804 transitions. [2022-01-18 06:06:35,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 06:06:35,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:35,866 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:35,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-01-18 06:06:36,088 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 06:06:36,088 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:06:36,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:06:36,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1937419986, now seen corresponding path program 34 times [2022-01-18 06:06:36,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:06:36,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829356487] [2022-01-18 06:06:36,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:06:36,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:06:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:36,304 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:36,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:06:36,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829356487] [2022-01-18 06:06:36,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829356487] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:06:36,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251552578] [2022-01-18 06:06:36,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:06:36,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:06:36,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:06:36,306 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 06:06:36,306 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 06:06:36,334 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:06:36,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:06:36,339 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-18 06:06:36,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:06:36,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:36,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:36,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:36,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:36,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:36,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:36,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:36,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:36,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:36,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:36,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:36,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:36,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:36,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:36,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:36,737 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 06:06:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:36,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:37,338 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:06:37,338 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 06:06:38,076 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:38,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251552578] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:38,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:38,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 28 [2022-01-18 06:06:38,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191296770] [2022-01-18 06:06:38,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:38,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-18 06:06:38,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:38,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-18 06:06:38,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2022-01-18 06:06:38,077 INFO L87 Difference]: Start difference. First operand 826 states and 1804 transitions. Second operand has 29 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 28 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:38,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:38,875 INFO L93 Difference]: Finished difference Result 1711 states and 3652 transitions. [2022-01-18 06:06:38,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 06:06:38,875 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 28 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have 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 06:06:38,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:38,878 INFO L225 Difference]: With dead ends: 1711 [2022-01-18 06:06:38,879 INFO L226 Difference]: Without dead ends: 1627 [2022-01-18 06:06:38,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 40 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=401, Invalid=1951, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 06:06:38,879 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 249 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:38,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 774 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 620 Invalid, 0 Unknown, 82 Unchecked, 0.3s Time] [2022-01-18 06:06:38,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2022-01-18 06:06:38,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 814. [2022-01-18 06:06:38,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 2.1894218942189423) internal successors, (1780), 813 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:38,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1780 transitions. [2022-01-18 06:06:38,897 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1780 transitions. Word has length 31 [2022-01-18 06:06:38,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:38,897 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1780 transitions. [2022-01-18 06:06:38,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 28 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:38,898 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1780 transitions. [2022-01-18 06:06:38,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 06:06:38,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:38,899 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:38,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-01-18 06:06:39,122 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 06:06:39,123 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:06:39,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:06:39,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1855913774, now seen corresponding path program 35 times [2022-01-18 06:06:39,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:06:39,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332883645] [2022-01-18 06:06:39,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:06:39,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:06:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:39,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:06:39,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332883645] [2022-01-18 06:06:39,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332883645] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:06:39,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830861506] [2022-01-18 06:06:39,375 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:06:39,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:06:39,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:06:39,380 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 06:06:39,381 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 06:06:39,409 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 06:06:39,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:06:39,410 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-18 06:06:39,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:06:40,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:40,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,077 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:40,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:40,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:40,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:40,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:40,085 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 24 [2022-01-18 06:06:40,112 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:40,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:41,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,506 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,515 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:41,637 INFO L353 Elim1Store]: treesize reduction 46, result has 76.4 percent of original size [2022-01-18 06:06:41,637 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 19 case distinctions, treesize of input 88 treesize of output 188 [2022-01-18 06:06:42,370 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:42,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830861506] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:42,370 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:42,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2022-01-18 06:06:42,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793337207] [2022-01-18 06:06:42,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:42,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 06:06:42,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:42,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 06:06:42,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1020, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:06:42,371 INFO L87 Difference]: Start difference. First operand 814 states and 1780 transitions. Second operand has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 35 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:45,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:45,489 INFO L93 Difference]: Finished difference Result 1153 states and 2507 transitions. [2022-01-18 06:06:45,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 06:06:45,490 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 35 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have 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 06:06:45,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:45,491 INFO L225 Difference]: With dead ends: 1153 [2022-01-18 06:06:45,491 INFO L226 Difference]: Without dead ends: 1138 [2022-01-18 06:06:45,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=467, Invalid=2185, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 06:06:45,492 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 214 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 311 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:45,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 669 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 126 Invalid, 0 Unknown, 311 Unchecked, 0.1s Time] [2022-01-18 06:06:45,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2022-01-18 06:06:45,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 910. [2022-01-18 06:06:45,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 909 states have (on average 2.2222222222222223) internal successors, (2020), 909 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:45,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 2020 transitions. [2022-01-18 06:06:45,503 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 2020 transitions. Word has length 31 [2022-01-18 06:06:45,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:45,504 INFO L470 AbstractCegarLoop]: Abstraction has 910 states and 2020 transitions. [2022-01-18 06:06:45,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 35 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:45,504 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 2020 transitions. [2022-01-18 06:06:45,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-18 06:06:45,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:45,505 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:45,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-01-18 06:06:45,706 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 06:06:45,706 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:06:45,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:06:45,707 INFO L85 PathProgramCache]: Analyzing trace with hash -481439902, now seen corresponding path program 36 times [2022-01-18 06:06:45,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:06:45,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130312939] [2022-01-18 06:06:45,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:06:45,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:06:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:45,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:06:45,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130312939] [2022-01-18 06:06:45,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130312939] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:06:45,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637399003] [2022-01-18 06:06:45,932 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:06:45,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:06:45,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:06:45,933 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 06:06:45,934 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 06:06:45,956 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 06:06:45,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:06:45,957 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-18 06:06:45,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:06:46,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:46,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:46,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:46,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:46,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:46,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:46,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:46,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:46,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:46,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:46,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:46,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:46,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:46,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:46,617 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 82 treesize of output 34 [2022-01-18 06:06:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:46,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:47,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:47,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:48,030 INFO L353 Elim1Store]: treesize reduction 46, result has 76.4 percent of original size [2022-01-18 06:06:48,030 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 19 case distinctions, treesize of input 88 treesize of output 188 [2022-01-18 06:06:48,469 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:48,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637399003] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:48,470 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:48,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-01-18 06:06:48,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14607667] [2022-01-18 06:06:48,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:48,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 06:06:48,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:48,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 06:06:48,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2022-01-18 06:06:48,471 INFO L87 Difference]: Start difference. First operand 910 states and 2020 transitions. Second operand has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:49,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:49,799 INFO L93 Difference]: Finished difference Result 1248 states and 2716 transitions. [2022-01-18 06:06:49,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 06:06:49,799 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have 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 06:06:49,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:49,800 INFO L225 Difference]: With dead ends: 1248 [2022-01-18 06:06:49,800 INFO L226 Difference]: Without dead ends: 1209 [2022-01-18 06:06:49,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 45 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=534, Invalid=2328, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 06:06:49,801 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 221 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 309 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:49,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 607 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 120 Invalid, 0 Unknown, 309 Unchecked, 0.1s Time] [2022-01-18 06:06:49,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2022-01-18 06:06:49,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 994. [2022-01-18 06:06:49,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 993 states have (on average 2.229607250755287) internal successors, (2214), 993 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:49,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 2214 transitions. [2022-01-18 06:06:49,815 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 2214 transitions. Word has length 31 [2022-01-18 06:06:49,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:49,815 INFO L470 AbstractCegarLoop]: Abstraction has 994 states and 2214 transitions. [2022-01-18 06:06:49,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:49,815 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 2214 transitions. [2022-01-18 06:06:49,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:06:49,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:49,817 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:49,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-01-18 06:06:50,031 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 06:06:50,031 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:06:50,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:06:50,032 INFO L85 PathProgramCache]: Analyzing trace with hash 156759775, now seen corresponding path program 37 times [2022-01-18 06:06:50,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:06:50,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382553322] [2022-01-18 06:06:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:06:50,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:06:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:50,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:06:50,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382553322] [2022-01-18 06:06:50,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382553322] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:06:50,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9387027] [2022-01-18 06:06:50,267 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:06:50,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:06:50,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:06:50,269 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 06:06:50,270 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 06:06:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:50,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-18 06:06:50,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:06:50,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:50,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:50,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:50,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:50,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:50,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:50,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:50,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:50,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:50,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:50,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:50,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:50,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:50,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:50,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:50,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:50,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:50,827 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 06:06:50,846 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:50,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:51,451 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:06:51,451 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 06:06:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:52,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9387027] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:52,027 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:52,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 29 [2022-01-18 06:06:52,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621849934] [2022-01-18 06:06:52,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:52,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 06:06:52,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:52,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 06:06:52,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2022-01-18 06:06:52,028 INFO L87 Difference]: Start difference. First operand 994 states and 2214 transitions. Second operand has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:53,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:53,243 INFO L93 Difference]: Finished difference Result 2543 states and 5462 transitions. [2022-01-18 06:06:53,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 06:06:53,244 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:06:53,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:53,247 INFO L225 Difference]: With dead ends: 2543 [2022-01-18 06:06:53,247 INFO L226 Difference]: Without dead ends: 2235 [2022-01-18 06:06:53,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=537, Invalid=2543, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 06:06:53,248 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 356 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:53,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 963 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 808 Invalid, 0 Unknown, 169 Unchecked, 0.4s Time] [2022-01-18 06:06:53,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2022-01-18 06:06:53,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 1237. [2022-01-18 06:06:53,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1236 states have (on average 2.26294498381877) internal successors, (2797), 1236 states have internal predecessors, (2797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:53,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2797 transitions. [2022-01-18 06:06:53,275 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2797 transitions. Word has length 34 [2022-01-18 06:06:53,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:53,275 INFO L470 AbstractCegarLoop]: Abstraction has 1237 states and 2797 transitions. [2022-01-18 06:06:53,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:53,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2797 transitions. [2022-01-18 06:06:53,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:06:53,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:53,277 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:53,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-01-18 06:06:53,484 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 06:06:53,485 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:06:53,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:06:53,486 INFO L85 PathProgramCache]: Analyzing trace with hash -839039841, now seen corresponding path program 38 times [2022-01-18 06:06:53,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:06:53,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401047891] [2022-01-18 06:06:53,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:06:53,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:06:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:53,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:06:53,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401047891] [2022-01-18 06:06:53,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401047891] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:06:53,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465088699] [2022-01-18 06:06:53,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:06:53,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:06:53,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:06:53,693 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 06:06:53,694 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 06:06:53,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:06:53,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:06:53,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-18 06:06:53,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:06:54,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:54,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:54,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:54,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:54,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:54,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:54,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:54,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:54,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:54,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:54,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:54,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:54,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:54,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:54,203 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 06:06:54,223 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:54,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:54,814 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:06:54,815 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 06:06:55,326 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 5 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:55,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465088699] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:55,326 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:55,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 29 [2022-01-18 06:06:55,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987290659] [2022-01-18 06:06:55,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:55,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 06:06:55,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:55,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 06:06:55,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2022-01-18 06:06:55,327 INFO L87 Difference]: Start difference. First operand 1237 states and 2797 transitions. Second operand has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:56,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:56,275 INFO L93 Difference]: Finished difference Result 2698 states and 5891 transitions. [2022-01-18 06:06:56,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 06:06:56,276 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:06:56,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:56,279 INFO L225 Difference]: With dead ends: 2698 [2022-01-18 06:06:56,279 INFO L226 Difference]: Without dead ends: 2373 [2022-01-18 06:06:56,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=1946, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 06:06:56,279 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 384 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 267 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:56,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 1074 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 775 Invalid, 0 Unknown, 267 Unchecked, 0.4s Time] [2022-01-18 06:06:56,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2022-01-18 06:06:56,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 1308. [2022-01-18 06:06:56,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 1307 states have (on average 2.2478959449120124) internal successors, (2938), 1307 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:56,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 2938 transitions. [2022-01-18 06:06:56,296 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 2938 transitions. Word has length 34 [2022-01-18 06:06:56,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:56,296 INFO L470 AbstractCegarLoop]: Abstraction has 1308 states and 2938 transitions. [2022-01-18 06:06:56,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 2938 transitions. [2022-01-18 06:06:56,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:06:56,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:56,299 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:56,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-01-18 06:06:56,521 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 06:06:56,521 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:06:56,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:06:56,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1044819745, now seen corresponding path program 39 times [2022-01-18 06:06:56,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:06:56,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181025394] [2022-01-18 06:06:56,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:06:56,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:06:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:06:56,757 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:56,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:06:56,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181025394] [2022-01-18 06:06:56,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181025394] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:06:56,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518496026] [2022-01-18 06:06:56,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:06:56,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:06:56,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:06:56,760 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 06:06:56,786 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 06:06:56,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 06:06:56,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:06:56,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-18 06:06:56,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:06:57,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:57,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:57,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:57,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:57,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:57,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:57,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:57,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:57,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:57,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:57,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:57,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:57,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:06:57,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:57,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:06:57,398 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 06:06:57,438 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:57,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:06:58,028 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:06:58,028 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 06:06:58,626 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:06:58,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518496026] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:06:58,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:06:58,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 29 [2022-01-18 06:06:58,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207213156] [2022-01-18 06:06:58,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:06:58,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 06:06:58,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:06:58,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 06:06:58,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=707, Unknown=0, NotChecked=0, Total=870 [2022-01-18 06:06:58,627 INFO L87 Difference]: Start difference. First operand 1308 states and 2938 transitions. Second operand has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:59,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:06:59,826 INFO L93 Difference]: Finished difference Result 3651 states and 7798 transitions. [2022-01-18 06:06:59,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 06:06:59,827 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:06:59,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:06:59,831 INFO L225 Difference]: With dead ends: 3651 [2022-01-18 06:06:59,831 INFO L226 Difference]: Without dead ends: 3378 [2022-01-18 06:06:59,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=469, Invalid=2287, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 06:06:59,832 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 346 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:06:59,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 1211 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 947 Invalid, 0 Unknown, 115 Unchecked, 0.5s Time] [2022-01-18 06:06:59,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3378 states. [2022-01-18 06:06:59,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3378 to 1870. [2022-01-18 06:06:59,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 2.2659176029962547) internal successors, (4235), 1869 states have internal predecessors, (4235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:59,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 4235 transitions. [2022-01-18 06:06:59,864 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 4235 transitions. Word has length 34 [2022-01-18 06:06:59,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:06:59,865 INFO L470 AbstractCegarLoop]: Abstraction has 1870 states and 4235 transitions. [2022-01-18 06:06:59,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:06:59,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 4235 transitions. [2022-01-18 06:06:59,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:06:59,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:06:59,867 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:06:59,890 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 06:07:00,082 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 06:07:00,083 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:07:00,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:07:00,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1177399239, now seen corresponding path program 40 times [2022-01-18 06:07:00,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:07:00,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108924022] [2022-01-18 06:07:00,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:07:00,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:07:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:07:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 06:07:00,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:07:00,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108924022] [2022-01-18 06:07:00,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108924022] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:07:00,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416037731] [2022-01-18 06:07:00,326 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:07:00,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:07:00,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:07:00,327 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 06:07:00,331 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 06:07:00,351 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:07:00,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:07:00,352 WARN L261 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 43 conjunts are in the unsatisfiable core [2022-01-18 06:07:00,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:07:00,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:00,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:00,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:00,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:00,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:00,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:00,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:00,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:00,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:00,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:00,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:00,766 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 90 treesize of output 34 [2022-01-18 06:07:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 06:07:00,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:07:01,391 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:07:01,392 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 06:07:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 52 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 06:07:02,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416037731] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:07:02,022 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:07:02,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-01-18 06:07:02,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709566331] [2022-01-18 06:07:02,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:07:02,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 06:07:02,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:07:02,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 06:07:02,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2022-01-18 06:07:02,023 INFO L87 Difference]: Start difference. First operand 1870 states and 4235 transitions. Second operand has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 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 06:07:02,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:07:02,812 INFO L93 Difference]: Finished difference Result 3091 states and 6858 transitions. [2022-01-18 06:07:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 06:07:02,812 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 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 34 [2022-01-18 06:07:02,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:07:02,816 INFO L225 Difference]: With dead ends: 3091 [2022-01-18 06:07:02,816 INFO L226 Difference]: Without dead ends: 2986 [2022-01-18 06:07:02,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=456, Invalid=2094, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 06:07:02,817 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 239 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 373 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:07:02,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 969 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 631 Invalid, 0 Unknown, 373 Unchecked, 0.3s Time] [2022-01-18 06:07:02,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2022-01-18 06:07:02,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1914. [2022-01-18 06:07:02,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1913 states have (on average 2.261369576581286) internal successors, (4326), 1913 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:02,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 4326 transitions. [2022-01-18 06:07:02,845 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 4326 transitions. Word has length 34 [2022-01-18 06:07:02,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:07:02,846 INFO L470 AbstractCegarLoop]: Abstraction has 1914 states and 4326 transitions. [2022-01-18 06:07:02,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 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 06:07:02,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 4326 transitions. [2022-01-18 06:07:02,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:07:02,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:07:02,848 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:07:02,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-18 06:07:03,071 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 06:07:03,071 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:07:03,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:07:03,072 INFO L85 PathProgramCache]: Analyzing trace with hash -535331473, now seen corresponding path program 41 times [2022-01-18 06:07:03,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:07:03,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520447829] [2022-01-18 06:07:03,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:07:03,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:07:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:07:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:03,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:07:03,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520447829] [2022-01-18 06:07:03,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520447829] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:07:03,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741933257] [2022-01-18 06:07:03,335 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:07:03,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:07:03,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:07:03,337 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 06:07:03,338 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 06:07:03,365 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 06:07:03,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:07:03,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-18 06:07:03,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:07:03,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:03,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:03,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:03,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:03,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:03,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:03,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:03,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:03,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:03,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:03,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:03,895 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 06:07:03,914 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:03,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:07:04,581 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:07:04,581 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 06:07:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 5 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:05,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741933257] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:07:05,096 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:07:05,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-01-18 06:07:05,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215071184] [2022-01-18 06:07:05,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:07:05,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 06:07:05,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:07:05,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 06:07:05,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2022-01-18 06:07:05,097 INFO L87 Difference]: Start difference. First operand 1914 states and 4326 transitions. Second operand has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:06,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:07:06,164 INFO L93 Difference]: Finished difference Result 3135 states and 6935 transitions. [2022-01-18 06:07:06,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 06:07:06,164 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:07:06,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:07:06,168 INFO L225 Difference]: With dead ends: 3135 [2022-01-18 06:07:06,168 INFO L226 Difference]: Without dead ends: 3045 [2022-01-18 06:07:06,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=627, Invalid=3033, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 06:07:06,169 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 233 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 550 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:07:06,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 1182 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 683 Invalid, 0 Unknown, 550 Unchecked, 0.3s Time] [2022-01-18 06:07:06,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2022-01-18 06:07:06,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 1941. [2022-01-18 06:07:06,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1940 states have (on average 2.265463917525773) internal successors, (4395), 1940 states have internal predecessors, (4395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:06,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 4395 transitions. [2022-01-18 06:07:06,205 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 4395 transitions. Word has length 34 [2022-01-18 06:07:06,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:07:06,205 INFO L470 AbstractCegarLoop]: Abstraction has 1941 states and 4395 transitions. [2022-01-18 06:07:06,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:06,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 4395 transitions. [2022-01-18 06:07:06,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:07:06,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:07:06,207 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:07:06,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-01-18 06:07:06,428 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 06:07:06,428 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:07:06,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:07:06,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1762915409, now seen corresponding path program 42 times [2022-01-18 06:07:06,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:07:06,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125744484] [2022-01-18 06:07:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:07:06,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:07:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:07:06,677 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:06,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:07:06,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125744484] [2022-01-18 06:07:06,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125744484] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:07:06,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445764795] [2022-01-18 06:07:06,678 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:07:06,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:07:06,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:07:06,679 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 06:07:06,679 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 06:07:06,702 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 06:07:06,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:07:06,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-18 06:07:06,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:07:07,099 INFO L353 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-01-18 06:07:07,099 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 06:07:07,127 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:07,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:07:07,728 INFO L353 Elim1Store]: treesize reduction 264, result has 47.7 percent of original size [2022-01-18 06:07:07,729 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 06:07:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:08,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445764795] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:07:08,555 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:07:08,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2022-01-18 06:07:08,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301469104] [2022-01-18 06:07:08,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:07:08,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-18 06:07:08,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:07:08,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-18 06:07:08,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2022-01-18 06:07:08,556 INFO L87 Difference]: Start difference. First operand 1941 states and 4395 transitions. Second operand has 29 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 28 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 06:07:09,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:07:09,315 INFO L93 Difference]: Finished difference Result 2951 states and 6561 transitions. [2022-01-18 06:07:09,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 06:07:09,315 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 28 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 34 [2022-01-18 06:07:09,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:07:09,318 INFO L225 Difference]: With dead ends: 2951 [2022-01-18 06:07:09,318 INFO L226 Difference]: Without dead ends: 2901 [2022-01-18 06:07:09,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=374, Invalid=1788, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 06:07:09,319 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 184 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:07:09,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 775 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 06:07:09,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2022-01-18 06:07:09,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1951. [2022-01-18 06:07:09,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1950 states have (on average 2.263076923076923) internal successors, (4413), 1950 states have internal predecessors, (4413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:09,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 4413 transitions. [2022-01-18 06:07:09,352 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 4413 transitions. Word has length 34 [2022-01-18 06:07:09,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:07:09,352 INFO L470 AbstractCegarLoop]: Abstraction has 1951 states and 4413 transitions. [2022-01-18 06:07:09,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 28 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 06:07:09,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 4413 transitions. [2022-01-18 06:07:09,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:07:09,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:07:09,354 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:07:09,376 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 06:07:09,576 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 06:07:09,576 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:07:09,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:07:09,576 INFO L85 PathProgramCache]: Analyzing trace with hash -954800038, now seen corresponding path program 43 times [2022-01-18 06:07:09,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:07:09,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077694742] [2022-01-18 06:07:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:07:09,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:07:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:07:09,801 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:09,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:07:09,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077694742] [2022-01-18 06:07:09,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077694742] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:07:09,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89849064] [2022-01-18 06:07:09,801 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:07:09,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:07:09,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:07:09,803 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 06:07:09,806 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 06:07:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:07:09,828 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:07:09,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:07:10,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:10,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:10,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:10,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:10,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:10,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:10,446 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 06:07:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:10,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:07:11,378 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:07:11,378 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 06:07:12,419 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:12,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89849064] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:07:12,420 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:07:12,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 37 [2022-01-18 06:07:12,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578299377] [2022-01-18 06:07:12,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:07:12,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 06:07:12,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:07:12,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 06:07:12,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1184, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 06:07:12,421 INFO L87 Difference]: Start difference. First operand 1951 states and 4413 transitions. Second operand has 38 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:13,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:07:13,844 INFO L93 Difference]: Finished difference Result 4136 states and 9235 transitions. [2022-01-18 06:07:13,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 06:07:13,844 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have 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 06:07:13,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:07:13,849 INFO L225 Difference]: With dead ends: 4136 [2022-01-18 06:07:13,849 INFO L226 Difference]: Without dead ends: 4001 [2022-01-18 06:07:13,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1574 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=803, Invalid=4309, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 06:07:13,850 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 325 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:07:13,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 727 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 543 Invalid, 0 Unknown, 141 Unchecked, 0.4s Time] [2022-01-18 06:07:13,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2022-01-18 06:07:13,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 1878. [2022-01-18 06:07:13,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1877 states have (on average 2.240809802876931) internal successors, (4206), 1877 states have internal predecessors, (4206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 4206 transitions. [2022-01-18 06:07:13,890 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 4206 transitions. Word has length 35 [2022-01-18 06:07:13,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:07:13,890 INFO L470 AbstractCegarLoop]: Abstraction has 1878 states and 4206 transitions. [2022-01-18 06:07:13,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:13,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 4206 transitions. [2022-01-18 06:07:13,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:07:13,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:07:13,893 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:07:13,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-01-18 06:07:14,107 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 06:07:14,107 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:07:14,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:07:14,108 INFO L85 PathProgramCache]: Analyzing trace with hash 127332090, now seen corresponding path program 44 times [2022-01-18 06:07:14,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:07:14,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076212982] [2022-01-18 06:07:14,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:07:14,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:07:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:07:14,350 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:14,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:07:14,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076212982] [2022-01-18 06:07:14,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076212982] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:07:14,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037869882] [2022-01-18 06:07:14,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:07:14,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:07:14,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:07:14,351 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 06:07:14,352 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 06:07:14,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:07:14,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:07:14,376 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:07:14,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:07:14,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:14,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:14,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:14,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:15,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:15,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:15,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:15,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:15,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:15,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:15,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:15,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:15,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:15,005 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 06:07:15,024 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:15,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:07:15,921 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:07:15,922 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 06:07:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:16,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037869882] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:07:16,888 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:07:16,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 37 [2022-01-18 06:07:16,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852408723] [2022-01-18 06:07:16,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:07:16,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 06:07:16,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:07:16,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 06:07:16,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1179, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 06:07:16,889 INFO L87 Difference]: Start difference. First operand 1878 states and 4206 transitions. Second operand has 38 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:18,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:07:18,105 INFO L93 Difference]: Finished difference Result 3758 states and 8289 transitions. [2022-01-18 06:07:18,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 06:07:18,106 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have 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 06:07:18,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:07:18,110 INFO L225 Difference]: With dead ends: 3758 [2022-01-18 06:07:18,110 INFO L226 Difference]: Without dead ends: 3705 [2022-01-18 06:07:18,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1367 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=830, Invalid=3862, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 06:07:18,111 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 236 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 323 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:07:18,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 994 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 617 Invalid, 0 Unknown, 323 Unchecked, 0.3s Time] [2022-01-18 06:07:18,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2022-01-18 06:07:18,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 2116. [2022-01-18 06:07:18,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 2115 states have (on average 2.2382978723404254) internal successors, (4734), 2115 states have internal predecessors, (4734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:18,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 4734 transitions. [2022-01-18 06:07:18,153 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 4734 transitions. Word has length 35 [2022-01-18 06:07:18,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:07:18,153 INFO L470 AbstractCegarLoop]: Abstraction has 2116 states and 4734 transitions. [2022-01-18 06:07:18,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.3421052631578947) internal successors, (89), 37 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:18,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 4734 transitions. [2022-01-18 06:07:18,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:07:18,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:07:18,156 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:07:18,181 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 06:07:18,378 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 06:07:18,378 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:07:18,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:07:18,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1662856346, now seen corresponding path program 45 times [2022-01-18 06:07:18,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:07:18,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644798343] [2022-01-18 06:07:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:07:18,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:07:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:07:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:07:18,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:07:18,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644798343] [2022-01-18 06:07:18,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644798343] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:07:18,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292894173] [2022-01-18 06:07:18,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:07:18,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:07:18,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:07:18,638 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 06:07:18,639 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 06:07:18,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 06:07:18,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:07:18,662 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:07:18,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:07:19,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:19,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:19,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:19,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:19,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:19,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:19,279 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 06:07:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:19,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:07:20,177 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:07:20,177 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 06:07:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:21,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292894173] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:07:21,080 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:07:21,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 36 [2022-01-18 06:07:21,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785872584] [2022-01-18 06:07:21,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:07:21,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 06:07:21,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:07:21,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 06:07:21,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1087, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 06:07:21,081 INFO L87 Difference]: Start difference. First operand 2116 states and 4734 transitions. Second operand has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:22,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:07:22,738 INFO L93 Difference]: Finished difference Result 4790 states and 10454 transitions. [2022-01-18 06:07:22,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 06:07:22,738 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have 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 06:07:22,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:07:22,744 INFO L225 Difference]: With dead ends: 4790 [2022-01-18 06:07:22,744 INFO L226 Difference]: Without dead ends: 4209 [2022-01-18 06:07:22,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1290 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=670, Invalid=3620, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 06:07:22,745 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 471 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:07:22,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 1288 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1164 Invalid, 0 Unknown, 120 Unchecked, 0.6s Time] [2022-01-18 06:07:22,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4209 states. [2022-01-18 06:07:22,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4209 to 2195. [2022-01-18 06:07:22,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 2194 states have (on average 2.2520510483135827) internal successors, (4941), 2194 states have internal predecessors, (4941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:22,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 4941 transitions. [2022-01-18 06:07:22,781 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 4941 transitions. Word has length 35 [2022-01-18 06:07:22,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:07:22,781 INFO L470 AbstractCegarLoop]: Abstraction has 2195 states and 4941 transitions. [2022-01-18 06:07:22,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:22,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 4941 transitions. [2022-01-18 06:07:22,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:07:22,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:07:22,784 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:07:22,805 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 06:07:22,997 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 06:07:22,997 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:07:22,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:07:22,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1623360970, now seen corresponding path program 46 times [2022-01-18 06:07:22,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:07:22,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639454759] [2022-01-18 06:07:22,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:07:22,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:07:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:07:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:23,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:07:23,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639454759] [2022-01-18 06:07:23,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639454759] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:07:23,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625674311] [2022-01-18 06:07:23,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:07:23,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:07:23,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:07:23,269 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 06:07:23,270 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 06:07:23,290 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:07:23,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:07:23,292 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:07:23,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:07:23,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:23,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:23,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:23,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:23,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:23,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:23,921 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 06:07:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:23,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:07:24,852 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:07:24,852 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 06:07:25,940 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:25,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625674311] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:07:25,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:07:25,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2022-01-18 06:07:25,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79603453] [2022-01-18 06:07:25,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:07:25,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 06:07:25,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:07:25,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 06:07:25,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1246, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 06:07:25,942 INFO L87 Difference]: Start difference. First operand 2195 states and 4941 transitions. Second operand has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:27,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:07:27,267 INFO L93 Difference]: Finished difference Result 4494 states and 10166 transitions. [2022-01-18 06:07:27,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 06:07:27,267 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have 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 06:07:27,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:07:27,273 INFO L225 Difference]: With dead ends: 4494 [2022-01-18 06:07:27,273 INFO L226 Difference]: Without dead ends: 4212 [2022-01-18 06:07:27,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1367 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=798, Invalid=3894, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 06:07:27,274 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 404 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 373 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:07:27,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 958 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 624 Invalid, 0 Unknown, 373 Unchecked, 0.4s Time] [2022-01-18 06:07:27,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2022-01-18 06:07:27,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 1459. [2022-01-18 06:07:27,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1458 states have (on average 2.174211248285322) internal successors, (3170), 1458 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:27,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 3170 transitions. [2022-01-18 06:07:27,300 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 3170 transitions. Word has length 35 [2022-01-18 06:07:27,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:07:27,300 INFO L470 AbstractCegarLoop]: Abstraction has 1459 states and 3170 transitions. [2022-01-18 06:07:27,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:27,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 3170 transitions. [2022-01-18 06:07:27,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:07:27,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:07:27,301 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:07:27,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-01-18 06:07:27,502 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 06:07:27,502 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:07:27,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:07:27,502 INFO L85 PathProgramCache]: Analyzing trace with hash 395777034, now seen corresponding path program 47 times [2022-01-18 06:07:27,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:07:27,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946078213] [2022-01-18 06:07:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:07:27,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:07:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:07:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:07:27,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:07:27,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946078213] [2022-01-18 06:07:27,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946078213] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:07:27,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70897404] [2022-01-18 06:07:27,770 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:07:27,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:07:27,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:07:27,771 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 06:07:27,772 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 06:07:27,802 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 06:07:27,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:07:27,803 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:07:27,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:07:28,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:28,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:28,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:28,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:28,424 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:28,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:28,426 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 06:07:28,445 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:28,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:07:29,325 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:07:29,325 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 06:07:30,318 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:30,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70897404] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:07:30,318 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:07:30,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 36 [2022-01-18 06:07:30,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480538753] [2022-01-18 06:07:30,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:07:30,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 06:07:30,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:07:30,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 06:07:30,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1082, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 06:07:30,319 INFO L87 Difference]: Start difference. First operand 1459 states and 3170 transitions. Second operand has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:31,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:07:31,422 INFO L93 Difference]: Finished difference Result 2688 states and 5687 transitions. [2022-01-18 06:07:31,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 06:07:31,423 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have 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 06:07:31,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:07:31,425 INFO L225 Difference]: With dead ends: 2688 [2022-01-18 06:07:31,425 INFO L226 Difference]: Without dead ends: 2396 [2022-01-18 06:07:31,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=493, Invalid=2369, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 06:07:31,426 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 379 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:07:31,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 1078 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 994 Invalid, 0 Unknown, 25 Unchecked, 0.5s Time] [2022-01-18 06:07:31,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2022-01-18 06:07:31,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 1654. [2022-01-18 06:07:31,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1653 states have (on average 2.173018753781004) internal successors, (3592), 1653 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:31,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 3592 transitions. [2022-01-18 06:07:31,445 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 3592 transitions. Word has length 35 [2022-01-18 06:07:31,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:07:31,445 INFO L470 AbstractCegarLoop]: Abstraction has 1654 states and 3592 transitions. [2022-01-18 06:07:31,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:31,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 3592 transitions. [2022-01-18 06:07:31,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:07:31,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:07:31,447 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:07:31,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-01-18 06:07:31,663 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 06:07:31,663 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:07:31,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:07:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1974496454, now seen corresponding path program 48 times [2022-01-18 06:07:31,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:07:31,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820499078] [2022-01-18 06:07:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:07:31,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:07:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:07:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:31,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:07:31,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820499078] [2022-01-18 06:07:31,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820499078] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:07:31,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540149718] [2022-01-18 06:07:31,916 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:07:31,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:07:31,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:07:31,917 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 06:07:31,918 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 06:07:31,940 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 06:07:31,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:07:31,941 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-18 06:07:31,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:07:32,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:32,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:32,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,555 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:32,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:32,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:32,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:32,561 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 107 treesize of output 39 [2022-01-18 06:07:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:32,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:07:33,478 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:07:33,478 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 06:07:34,572 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:34,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540149718] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:07:34,572 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:07:34,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 36 [2022-01-18 06:07:34,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959293285] [2022-01-18 06:07:34,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:07:34,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 06:07:34,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:07:34,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 06:07:34,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1099, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 06:07:34,574 INFO L87 Difference]: Start difference. First operand 1654 states and 3592 transitions. Second operand has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:35,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:07:35,735 INFO L93 Difference]: Finished difference Result 2853 states and 6115 transitions. [2022-01-18 06:07:35,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 06:07:35,736 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have 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 06:07:35,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:07:35,739 INFO L225 Difference]: With dead ends: 2853 [2022-01-18 06:07:35,739 INFO L226 Difference]: Without dead ends: 2769 [2022-01-18 06:07:35,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=525, Invalid=2781, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 06:07:35,740 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 218 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:07:35,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 914 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 731 Invalid, 0 Unknown, 131 Unchecked, 0.4s Time] [2022-01-18 06:07:35,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-01-18 06:07:35,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1618. [2022-01-18 06:07:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 2.168212739641311) internal successors, (3506), 1617 states have internal predecessors, (3506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:35,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 3506 transitions. [2022-01-18 06:07:35,764 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 3506 transitions. Word has length 35 [2022-01-18 06:07:35,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:07:35,764 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 3506 transitions. [2022-01-18 06:07:35,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:35,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 3506 transitions. [2022-01-18 06:07:35,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:07:35,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:07:35,766 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:07:35,785 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 06:07:35,974 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 06:07:35,975 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:07:35,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:07:35,975 INFO L85 PathProgramCache]: Analyzing trace with hash 356281658, now seen corresponding path program 49 times [2022-01-18 06:07:35,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:07:35,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49861712] [2022-01-18 06:07:35,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:07:35,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:07:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:07:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:36,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:07:36,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49861712] [2022-01-18 06:07:36,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49861712] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:07:36,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403468976] [2022-01-18 06:07:36,260 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:07:36,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:07:36,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:07:36,261 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 06:07:36,262 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 06:07:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:07:36,297 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:07:36,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:07:36,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:36,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:36,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:36,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:36,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:36,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:36,937 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 06:07:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:36,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:07:37,867 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:07:37,868 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 06:07:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:38,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403468976] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:07:38,948 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:07:38,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2022-01-18 06:07:38,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472506562] [2022-01-18 06:07:38,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:07:38,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 06:07:38,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:07:38,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 06:07:38,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1243, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 06:07:38,949 INFO L87 Difference]: Start difference. First operand 1618 states and 3506 transitions. Second operand has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:39,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:07:39,829 INFO L93 Difference]: Finished difference Result 2882 states and 6229 transitions. [2022-01-18 06:07:39,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 06:07:39,829 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have 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 06:07:39,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:07:39,833 INFO L225 Difference]: With dead ends: 2882 [2022-01-18 06:07:39,833 INFO L226 Difference]: Without dead ends: 2783 [2022-01-18 06:07:39,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=551, Invalid=2871, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 06:07:39,833 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 218 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:07:39,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 840 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 595 Invalid, 0 Unknown, 204 Unchecked, 0.3s Time] [2022-01-18 06:07:39,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2022-01-18 06:07:39,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 1723. [2022-01-18 06:07:39,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1722 states have (on average 2.1759581881533103) internal successors, (3747), 1722 states have internal predecessors, (3747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:39,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 3747 transitions. [2022-01-18 06:07:39,859 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 3747 transitions. Word has length 35 [2022-01-18 06:07:39,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:07:39,859 INFO L470 AbstractCegarLoop]: Abstraction has 1723 states and 3747 transitions. [2022-01-18 06:07:39,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:39,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 3747 transitions. [2022-01-18 06:07:39,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:07:39,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:07:39,861 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:07:39,877 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 06:07:40,061 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 06:07:40,062 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:07:40,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:07:40,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1096114186, now seen corresponding path program 50 times [2022-01-18 06:07:40,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:07:40,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324074622] [2022-01-18 06:07:40,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:07:40,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:07:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:07:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:40,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:07:40,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324074622] [2022-01-18 06:07:40,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324074622] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:07:40,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408326417] [2022-01-18 06:07:40,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:07:40,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:07:40,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:07:40,380 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 06:07:40,400 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 06:07:40,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:07:40,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:07:40,408 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:07:40,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:07:41,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:41,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:41,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,068 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:41,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:41,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:41,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:41,083 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 06:07:41,102 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:41,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:07:42,034 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:07:42,034 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 06:07:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:42,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408326417] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:07:42,903 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:07:42,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2022-01-18 06:07:42,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989920947] [2022-01-18 06:07:42,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:07:42,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 06:07:42,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:07:42,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 06:07:42,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1241, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 06:07:42,904 INFO L87 Difference]: Start difference. First operand 1723 states and 3747 transitions. Second operand has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:44,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:07:44,104 INFO L93 Difference]: Finished difference Result 2890 states and 6235 transitions. [2022-01-18 06:07:44,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 06:07:44,104 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have 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 06:07:44,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:07:44,108 INFO L225 Difference]: With dead ends: 2890 [2022-01-18 06:07:44,108 INFO L226 Difference]: Without dead ends: 2860 [2022-01-18 06:07:44,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=658, Invalid=3764, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 06:07:44,109 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 188 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 221 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:07:44,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 1160 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 839 Invalid, 0 Unknown, 221 Unchecked, 0.4s Time] [2022-01-18 06:07:44,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2022-01-18 06:07:44,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 1747. [2022-01-18 06:07:44,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1746 states have (on average 2.1781214203894614) internal successors, (3803), 1746 states have internal predecessors, (3803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:44,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 3803 transitions. [2022-01-18 06:07:44,140 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 3803 transitions. Word has length 35 [2022-01-18 06:07:44,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:07:44,140 INFO L470 AbstractCegarLoop]: Abstraction has 1747 states and 3803 transitions. [2022-01-18 06:07:44,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:44,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 3803 transitions. [2022-01-18 06:07:44,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:07:44,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:07:44,143 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:07:44,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-01-18 06:07:44,365 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 06:07:44,365 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:07:44,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:07:44,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2135634746, now seen corresponding path program 51 times [2022-01-18 06:07:44,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:07:44,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5766976] [2022-01-18 06:07:44,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:07:44,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:07:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:07:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:44,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:07:44,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5766976] [2022-01-18 06:07:44,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5766976] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:07:44,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944503439] [2022-01-18 06:07:44,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:07:44,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:07:44,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:07:44,664 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 06:07:44,665 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 06:07:44,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 06:07:44,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:07:44,697 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:07:44,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:07:45,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:45,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:45,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:45,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:45,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:45,300 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 06:07:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:45,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:07:46,198 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:07:46,199 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 06:07:47,308 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:47,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944503439] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:07:47,309 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:07:47,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 35 [2022-01-18 06:07:47,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027178089] [2022-01-18 06:07:47,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:07:47,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 06:07:47,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:07:47,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 06:07:47,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1026, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:07:47,309 INFO L87 Difference]: Start difference. First operand 1747 states and 3803 transitions. Second operand has 36 states, 36 states have (on average 2.388888888888889) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:48,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:07:48,983 INFO L93 Difference]: Finished difference Result 3655 states and 7698 transitions. [2022-01-18 06:07:48,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 06:07:48,983 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.388888888888889) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have 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 06:07:48,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:07:48,987 INFO L225 Difference]: With dead ends: 3655 [2022-01-18 06:07:48,987 INFO L226 Difference]: Without dead ends: 3221 [2022-01-18 06:07:48,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=572, Invalid=3210, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 06:07:48,988 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 491 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 06:07:48,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 1570 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1410 Invalid, 0 Unknown, 64 Unchecked, 0.7s Time] [2022-01-18 06:07:48,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3221 states. [2022-01-18 06:07:49,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3221 to 1927. [2022-01-18 06:07:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1926 states have (on average 2.1895119418483904) internal successors, (4217), 1926 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:49,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 4217 transitions. [2022-01-18 06:07:49,015 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 4217 transitions. Word has length 35 [2022-01-18 06:07:49,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:07:49,015 INFO L470 AbstractCegarLoop]: Abstraction has 1927 states and 4217 transitions. [2022-01-18 06:07:49,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.388888888888889) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:49,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 4217 transitions. [2022-01-18 06:07:49,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:07:49,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:07:49,017 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:07:49,040 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 06:07:49,238 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 06:07:49,238 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:07:49,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:07:49,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2096139370, now seen corresponding path program 52 times [2022-01-18 06:07:49,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:07:49,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694480662] [2022-01-18 06:07:49,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:07:49,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:07:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:07:49,562 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:49,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:07:49,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694480662] [2022-01-18 06:07:49,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694480662] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:07:49,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163114685] [2022-01-18 06:07:49,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:07:49,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:07:49,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:07:49,564 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 06:07:49,601 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:07:49,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:07:49,602 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 06:07:49,602 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:07:49,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:07:50,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:50,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:50,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:50,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:50,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:50,256 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 06:07:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:50,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:07:51,231 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:07:51,231 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 06:07:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:51,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163114685] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:07:51,913 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:07:51,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-01-18 06:07:51,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272211935] [2022-01-18 06:07:51,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:07:51,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 06:07:51,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:07:51,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 06:07:51,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1175, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 06:07:51,914 INFO L87 Difference]: Start difference. First operand 1927 states and 4217 transitions. Second operand has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:53,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:07:53,603 INFO L93 Difference]: Finished difference Result 4268 states and 9267 transitions. [2022-01-18 06:07:53,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 06:07:53,603 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have 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 06:07:53,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:07:53,608 INFO L225 Difference]: With dead ends: 4268 [2022-01-18 06:07:53,608 INFO L226 Difference]: Without dead ends: 3932 [2022-01-18 06:07:53,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=930, Invalid=4472, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 06:07:53,609 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 348 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 469 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:07:53,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 1333 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1042 Invalid, 0 Unknown, 469 Unchecked, 0.6s Time] [2022-01-18 06:07:53,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2022-01-18 06:07:53,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 1912. [2022-01-18 06:07:53,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 2.1805337519623236) internal successors, (4167), 1911 states have internal predecessors, (4167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 4167 transitions. [2022-01-18 06:07:53,638 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 4167 transitions. Word has length 35 [2022-01-18 06:07:53,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:07:53,638 INFO L470 AbstractCegarLoop]: Abstraction has 1912 states and 4167 transitions. [2022-01-18 06:07:53,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:53,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 4167 transitions. [2022-01-18 06:07:53,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:07:53,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:07:53,640 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:07:53,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-01-18 06:07:53,840 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 06:07:53,840 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:07:53,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:07:53,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1458995398, now seen corresponding path program 53 times [2022-01-18 06:07:53,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:07:53,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664711475] [2022-01-18 06:07:53,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:07:53,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:07:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:07:54,156 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:54,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:07:54,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664711475] [2022-01-18 06:07:54,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664711475] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:07:54,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931997234] [2022-01-18 06:07:54,157 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:07:54,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:07:54,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:07:54,158 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 06:07:54,159 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 06:07:54,187 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 06:07:54,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:07:54,188 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:07:54,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:07:54,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:54,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:54,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:54,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:54,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:54,820 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 06:07:54,845 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:54,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:07:55,741 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:07:55,741 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 06:07:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:56,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931997234] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:07:56,474 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:07:56,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-01-18 06:07:56,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443975953] [2022-01-18 06:07:56,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:07:56,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 06:07:56,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:07:56,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 06:07:56,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1174, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 06:07:56,475 INFO L87 Difference]: Start difference. First operand 1912 states and 4167 transitions. Second operand has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:57,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:07:57,592 INFO L93 Difference]: Finished difference Result 3252 states and 7031 transitions. [2022-01-18 06:07:57,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 06:07:57,592 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have 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 06:07:57,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:07:57,596 INFO L225 Difference]: With dead ends: 3252 [2022-01-18 06:07:57,596 INFO L226 Difference]: Without dead ends: 3222 [2022-01-18 06:07:57,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=613, Invalid=3293, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 06:07:57,597 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 242 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 359 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:07:57,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 1073 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 625 Invalid, 0 Unknown, 359 Unchecked, 0.3s Time] [2022-01-18 06:07:57,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2022-01-18 06:07:57,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 2050. [2022-01-18 06:07:57,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2050 states, 2049 states have (on average 2.186920448999512) internal successors, (4481), 2049 states have internal predecessors, (4481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:57,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 4481 transitions. [2022-01-18 06:07:57,621 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 4481 transitions. Word has length 35 [2022-01-18 06:07:57,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:07:57,621 INFO L470 AbstractCegarLoop]: Abstraction has 2050 states and 4481 transitions. [2022-01-18 06:07:57,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:07:57,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 4481 transitions. [2022-01-18 06:07:57,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:07:57,623 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:07:57,623 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:07:57,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-01-18 06:07:57,823 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 06:07:57,824 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:07:57,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:07:57,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1282496970, now seen corresponding path program 54 times [2022-01-18 06:07:57,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:07:57,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315278144] [2022-01-18 06:07:57,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:07:57,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:07:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:07:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:58,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:07:58,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315278144] [2022-01-18 06:07:58,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315278144] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:07:58,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86996401] [2022-01-18 06:07:58,144 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:07:58,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:07:58,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:07:58,148 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 06:07:58,149 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 06:07:58,180 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 06:07:58,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:07:58,181 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:07:58,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:07:58,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:58,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:58,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:07:58,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:07:58,885 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 105 treesize of output 39 [2022-01-18 06:07:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:07:58,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:07:59,799 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:07:59,799 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 06:08:00,807 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:00,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86996401] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:08:00,808 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:08:00,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 36 [2022-01-18 06:08:00,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877849080] [2022-01-18 06:08:00,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:08:00,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 06:08:00,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:08:00,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 06:08:00,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1106, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 06:08:00,809 INFO L87 Difference]: Start difference. First operand 2050 states and 4481 transitions. Second operand has 37 states, 37 states have (on average 2.2432432432432434) internal successors, (83), 36 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 06:08:01,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:08:01,887 INFO L93 Difference]: Finished difference Result 3617 states and 7865 transitions. [2022-01-18 06:08:01,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 06:08:01,888 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.2432432432432434) internal successors, (83), 36 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 35 [2022-01-18 06:08:01,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:08:01,892 INFO L225 Difference]: With dead ends: 3617 [2022-01-18 06:08:01,892 INFO L226 Difference]: Without dead ends: 3572 [2022-01-18 06:08:01,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=648, Invalid=3258, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 06:08:01,893 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 266 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 323 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:08:01,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 899 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 562 Invalid, 0 Unknown, 323 Unchecked, 0.3s Time] [2022-01-18 06:08:01,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2022-01-18 06:08:01,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2224. [2022-01-18 06:08:01,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 2223 states have (on average 2.1938821412505622) internal successors, (4877), 2223 states have internal predecessors, (4877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:01,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 4877 transitions. [2022-01-18 06:08:01,923 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 4877 transitions. Word has length 35 [2022-01-18 06:08:01,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:08:01,923 INFO L470 AbstractCegarLoop]: Abstraction has 2224 states and 4877 transitions. [2022-01-18 06:08:01,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.2432432432432434) internal successors, (83), 36 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 06:08:01,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 4877 transitions. [2022-01-18 06:08:01,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:08:01,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:08:01,925 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:08:01,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-01-18 06:08:02,125 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 06:08:02,126 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:08:02,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:08:02,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1332936966, now seen corresponding path program 55 times [2022-01-18 06:08:02,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:08:02,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289358987] [2022-01-18 06:08:02,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:08:02,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:08:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:08:02,389 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:02,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:08:02,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289358987] [2022-01-18 06:08:02,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289358987] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:08:02,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485621633] [2022-01-18 06:08:02,389 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:08:02,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:08:02,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:08:02,390 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 06:08:02,391 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 06:08:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:08:02,413 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:08:02,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:08:02,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:02,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:02,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:02,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:02,987 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:02,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:03,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:03,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:03,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:03,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:03,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:03,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:03,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:03,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:03,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:03,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:03,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:03,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:03,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:03,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:03,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:03,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:03,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:03,012 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 105 treesize of output 39 [2022-01-18 06:08:03,032 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:03,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:08:03,942 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:08:03,942 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 06:08:04,620 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:04,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485621633] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:08:04,620 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:08:04,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 36 [2022-01-18 06:08:04,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526353323] [2022-01-18 06:08:04,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:08:04,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 06:08:04,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:08:04,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 06:08:04,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1110, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 06:08:04,621 INFO L87 Difference]: Start difference. First operand 2224 states and 4877 transitions. Second operand has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:06,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:08:06,932 INFO L93 Difference]: Finished difference Result 5467 states and 11723 transitions. [2022-01-18 06:08:06,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 06:08:06,933 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have 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 06:08:06,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:08:06,939 INFO L225 Difference]: With dead ends: 5467 [2022-01-18 06:08:06,939 INFO L226 Difference]: Without dead ends: 4948 [2022-01-18 06:08:06,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1619 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=862, Invalid=4838, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 06:08:06,940 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 486 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 1564 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:08:06,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1617 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1564 Invalid, 0 Unknown, 110 Unchecked, 0.8s Time] [2022-01-18 06:08:06,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4948 states. [2022-01-18 06:08:06,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4948 to 2767. [2022-01-18 06:08:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2767 states, 2766 states have (on average 2.2024584237165583) internal successors, (6092), 2766 states have internal predecessors, (6092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 6092 transitions. [2022-01-18 06:08:06,992 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 6092 transitions. Word has length 35 [2022-01-18 06:08:06,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:08:06,992 INFO L470 AbstractCegarLoop]: Abstraction has 2767 states and 6092 transitions. [2022-01-18 06:08:06,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:06,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 6092 transitions. [2022-01-18 06:08:06,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:08:06,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:08:06,995 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:08:07,021 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 06:08:07,203 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 06:08:07,203 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:08:07,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:08:07,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1388779334, now seen corresponding path program 56 times [2022-01-18 06:08:07,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:08:07,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606978558] [2022-01-18 06:08:07,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:08:07,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:08:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:08:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 06:08:07,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:08:07,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606978558] [2022-01-18 06:08:07,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606978558] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:08:07,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048137865] [2022-01-18 06:08:07,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:08:07,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:08:07,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:08:07,441 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 06:08:07,442 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 06:08:07,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:08:07,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:08:07,470 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:08:07,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:08:08,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:08,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:08,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:08,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:08,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:08,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:08,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:08,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:08,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:08,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:08,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:08,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:08,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:08,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:08,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:08,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:08,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:08,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:08,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:08,014 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 06:08:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:08,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:08:08,877 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:08:08,877 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 06:08:09,973 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:09,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048137865] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:08:09,973 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:08:09,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 15] total 32 [2022-01-18 06:08:09,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781974019] [2022-01-18 06:08:09,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:08:09,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 06:08:09,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:08:09,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 06:08:09,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 06:08:09,974 INFO L87 Difference]: Start difference. First operand 2767 states and 6092 transitions. Second operand has 33 states, 33 states have (on average 2.272727272727273) internal successors, (75), 32 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:11,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:08:11,614 INFO L93 Difference]: Finished difference Result 5618 states and 12121 transitions. [2022-01-18 06:08:11,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 06:08:11,614 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.272727272727273) internal successors, (75), 32 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have 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 06:08:11,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:08:11,620 INFO L225 Difference]: With dead ends: 5618 [2022-01-18 06:08:11,620 INFO L226 Difference]: Without dead ends: 5088 [2022-01-18 06:08:11,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 44 SyntacticMatches, 8 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=796, Invalid=3626, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 06:08:11,621 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 584 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 245 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:08:11,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 1197 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 949 Invalid, 0 Unknown, 245 Unchecked, 0.5s Time] [2022-01-18 06:08:11,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5088 states. [2022-01-18 06:08:11,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5088 to 2955. [2022-01-18 06:08:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2954 states have (on average 2.2109004739336493) internal successors, (6531), 2954 states have internal predecessors, (6531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:11,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 6531 transitions. [2022-01-18 06:08:11,666 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 6531 transitions. Word has length 35 [2022-01-18 06:08:11,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:08:11,666 INFO L470 AbstractCegarLoop]: Abstraction has 2955 states and 6531 transitions. [2022-01-18 06:08:11,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.272727272727273) internal successors, (75), 32 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:11,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 6531 transitions. [2022-01-18 06:08:11,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:08:11,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:08:11,669 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:08:11,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-01-18 06:08:11,869 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 06:08:11,869 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:08:11,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:08:11,870 INFO L85 PathProgramCache]: Analyzing trace with hash -285585158, now seen corresponding path program 57 times [2022-01-18 06:08:11,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:08:11,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895628596] [2022-01-18 06:08:11,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:08:11,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:08:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:08:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:12,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:08:12,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895628596] [2022-01-18 06:08:12,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895628596] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:08:12,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750296310] [2022-01-18 06:08:12,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:08:12,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:08:12,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:08:12,135 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 06:08:12,136 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 06:08:12,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 06:08:12,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:08:12,159 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:08:12,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:08:12,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:12,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:12,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:12,734 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 06:08:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:12,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:08:13,632 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:08:13,632 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 06:08:14,494 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:14,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750296310] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:08:14,495 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:08:14,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 33 [2022-01-18 06:08:14,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104957755] [2022-01-18 06:08:14,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:08:14,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 06:08:14,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:08:14,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 06:08:14,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=914, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 06:08:14,495 INFO L87 Difference]: Start difference. First operand 2955 states and 6531 transitions. Second operand has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:16,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:08:16,171 INFO L93 Difference]: Finished difference Result 5975 states and 12874 transitions. [2022-01-18 06:08:16,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 06:08:16,171 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have 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 06:08:16,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:08:16,179 INFO L225 Difference]: With dead ends: 5975 [2022-01-18 06:08:16,179 INFO L226 Difference]: Without dead ends: 5495 [2022-01-18 06:08:16,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=667, Invalid=3115, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 06:08:16,179 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 446 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 06:08:16,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 1423 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1377 Invalid, 0 Unknown, 123 Unchecked, 0.7s Time] [2022-01-18 06:08:16,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5495 states. [2022-01-18 06:08:16,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5495 to 2999. [2022-01-18 06:08:16,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2998 states have (on average 2.208138759172782) internal successors, (6620), 2998 states have internal predecessors, (6620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:16,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 6620 transitions. [2022-01-18 06:08:16,248 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 6620 transitions. Word has length 35 [2022-01-18 06:08:16,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:08:16,249 INFO L470 AbstractCegarLoop]: Abstraction has 2999 states and 6620 transitions. [2022-01-18 06:08:16,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:16,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 6620 transitions. [2022-01-18 06:08:16,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:08:16,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:08:16,272 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:08:16,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-01-18 06:08:16,473 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 06:08:16,473 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:08:16,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:08:16,473 INFO L85 PathProgramCache]: Analyzing trace with hash 414751994, now seen corresponding path program 58 times [2022-01-18 06:08:16,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:08:16,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955021718] [2022-01-18 06:08:16,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:08:16,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:08:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:08:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:16,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:08:16,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955021718] [2022-01-18 06:08:16,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955021718] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:08:16,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121430778] [2022-01-18 06:08:16,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:08:16,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:08:16,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:08:16,781 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 06:08:16,781 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 06:08:16,803 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:08:16,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:08:16,804 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:08:16,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:08:17,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:17,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:17,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:17,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:17,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:17,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:17,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:17,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:17,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:17,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:17,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:17,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:17,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:17,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:17,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:17,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:17,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:17,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:17,398 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 06:08:17,417 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:17,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:08:18,310 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:08:18,310 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 06:08:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:19,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121430778] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:08:19,612 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:08:19,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 35 [2022-01-18 06:08:19,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589188460] [2022-01-18 06:08:19,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:08:19,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 06:08:19,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:08:19,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 06:08:19,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1044, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:08:19,613 INFO L87 Difference]: Start difference. First operand 2999 states and 6620 transitions. Second operand has 36 states, 36 states have (on average 2.2222222222222223) internal successors, (80), 35 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:20,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:08:20,905 INFO L93 Difference]: Finished difference Result 5146 states and 11289 transitions. [2022-01-18 06:08:20,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 06:08:20,906 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.2222222222222223) internal successors, (80), 35 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have 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 06:08:20,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:08:20,912 INFO L225 Difference]: With dead ends: 5146 [2022-01-18 06:08:20,912 INFO L226 Difference]: Without dead ends: 4927 [2022-01-18 06:08:20,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=632, Invalid=3400, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 06:08:20,913 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 308 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 504 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:08:20,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 1354 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 946 Invalid, 0 Unknown, 504 Unchecked, 0.5s Time] [2022-01-18 06:08:20,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4927 states. [2022-01-18 06:08:20,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4927 to 3147. [2022-01-18 06:08:20,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3147 states, 3146 states have (on average 2.214558169103624) internal successors, (6967), 3146 states have internal predecessors, (6967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:20,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3147 states to 3147 states and 6967 transitions. [2022-01-18 06:08:20,958 INFO L78 Accepts]: Start accepts. Automaton has 3147 states and 6967 transitions. Word has length 35 [2022-01-18 06:08:20,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:08:20,958 INFO L470 AbstractCegarLoop]: Abstraction has 3147 states and 6967 transitions. [2022-01-18 06:08:20,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.2222222222222223) internal successors, (80), 35 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:20,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3147 states and 6967 transitions. [2022-01-18 06:08:20,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:08:20,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:08:20,961 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:08:20,976 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 06:08:21,161 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 06:08:21,161 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:08:21,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:08:21,162 INFO L85 PathProgramCache]: Analyzing trace with hash -910338166, now seen corresponding path program 59 times [2022-01-18 06:08:21,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:08:21,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392495262] [2022-01-18 06:08:21,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:08:21,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:08:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:08:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:21,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:08:21,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392495262] [2022-01-18 06:08:21,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392495262] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:08:21,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075144850] [2022-01-18 06:08:21,469 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:08:21,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:08:21,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:08:21,470 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 06:08:21,472 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 06:08:21,497 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 06:08:21,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:08:21,498 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-18 06:08:21,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:08:22,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:22,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:22,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:22,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:22,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:22,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:22,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:22,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:22,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:22,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:22,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:22,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:22,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:22,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:22,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:22,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:22,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:22,059 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 107 treesize of output 41 [2022-01-18 06:08:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:22,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:08:22,668 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,668 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,684 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,684 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,692 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,692 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:22,763 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:08:22,763 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 06:08:23,125 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:23,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075144850] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:08:23,125 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:08:23,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 33 [2022-01-18 06:08:23,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302764410] [2022-01-18 06:08:23,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:08:23,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 06:08:23,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:08:23,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 06:08:23,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=842, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 06:08:23,126 INFO L87 Difference]: Start difference. First operand 3147 states and 6967 transitions. Second operand has 34 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 33 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:25,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:08:25,193 INFO L93 Difference]: Finished difference Result 5025 states and 10723 transitions. [2022-01-18 06:08:25,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 06:08:25,194 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 33 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have 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 06:08:25,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:08:25,202 INFO L225 Difference]: With dead ends: 5025 [2022-01-18 06:08:25,202 INFO L226 Difference]: Without dead ends: 4661 [2022-01-18 06:08:25,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 43 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=777, Invalid=2763, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 06:08:25,203 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 631 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:08:25,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [631 Valid, 872 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 835 Invalid, 0 Unknown, 39 Unchecked, 0.6s Time] [2022-01-18 06:08:25,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2022-01-18 06:08:25,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 3404. [2022-01-18 06:08:25,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3404 states, 3403 states have (on average 2.208639435791948) internal successors, (7516), 3403 states have internal predecessors, (7516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 7516 transitions. [2022-01-18 06:08:25,258 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 7516 transitions. Word has length 35 [2022-01-18 06:08:25,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:08:25,258 INFO L470 AbstractCegarLoop]: Abstraction has 3404 states and 7516 transitions. [2022-01-18 06:08:25,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 33 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:25,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 7516 transitions. [2022-01-18 06:08:25,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:08:25,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:08:25,261 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:08:25,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-01-18 06:08:25,462 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 06:08:25,462 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:08:25,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:08:25,462 INFO L85 PathProgramCache]: Analyzing trace with hash 550321546, now seen corresponding path program 60 times [2022-01-18 06:08:25,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:08:25,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604838764] [2022-01-18 06:08:25,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:08:25,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:08:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:08:25,724 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:25,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:08:25,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604838764] [2022-01-18 06:08:25,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604838764] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:08:25,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91711938] [2022-01-18 06:08:25,724 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:08:25,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:08:25,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:08:25,727 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 06:08:25,728 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 06:08:25,750 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 06:08:25,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:08:25,751 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:08:25,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:08:26,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:26,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:26,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:26,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:26,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:26,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:26,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:26,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:26,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:26,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:26,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:26,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:26,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:26,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:26,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:26,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:26,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:26,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:26,988 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:26,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:26,989 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 39 [2022-01-18 06:08:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:27,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:08:28,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,630 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,631 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,631 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,632 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,636 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,640 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,640 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,643 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,643 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,651 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:28,833 INFO L353 Elim1Store]: treesize reduction 63, result has 76.9 percent of original size [2022-01-18 06:08:28,834 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 40 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 26 case distinctions, treesize of input 106 treesize of output 255 [2022-01-18 06:08:29,376 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:29,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91711938] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:08:29,377 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:08:29,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 35 [2022-01-18 06:08:29,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502512068] [2022-01-18 06:08:29,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:08:29,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 06:08:29,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:08:29,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 06:08:29,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1000, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:08:29,378 INFO L87 Difference]: Start difference. First operand 3404 states and 7516 transitions. Second operand has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 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 06:08:32,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:08:32,851 INFO L93 Difference]: Finished difference Result 3803 states and 8346 transitions. [2022-01-18 06:08:32,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 06:08:32,851 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 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 35 [2022-01-18 06:08:32,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:08:32,855 INFO L225 Difference]: With dead ends: 3803 [2022-01-18 06:08:32,855 INFO L226 Difference]: Without dead ends: 3791 [2022-01-18 06:08:32,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 51 SyntacticMatches, 8 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=541, Invalid=2429, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 06:08:32,856 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 225 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 493 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:08:32,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 1043 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 153 Invalid, 0 Unknown, 493 Unchecked, 0.1s Time] [2022-01-18 06:08:32,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3791 states. [2022-01-18 06:08:32,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3791 to 3523. [2022-01-18 06:08:32,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3523 states, 3522 states have (on average 2.2234525837592276) internal successors, (7831), 3522 states have internal predecessors, (7831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:32,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3523 states to 3523 states and 7831 transitions. [2022-01-18 06:08:32,897 INFO L78 Accepts]: Start accepts. Automaton has 3523 states and 7831 transitions. Word has length 35 [2022-01-18 06:08:32,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:08:32,897 INFO L470 AbstractCegarLoop]: Abstraction has 3523 states and 7831 transitions. [2022-01-18 06:08:32,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 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 06:08:32,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3523 states and 7831 transitions. [2022-01-18 06:08:32,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:08:32,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:08:32,900 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:08:32,916 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 06:08:33,101 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 06:08:33,101 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:08:33,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:08:33,101 INFO L85 PathProgramCache]: Analyzing trace with hash -949833542, now seen corresponding path program 61 times [2022-01-18 06:08:33,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:08:33,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072667288] [2022-01-18 06:08:33,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:08:33,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:08:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:08:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 06:08:33,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:08:33,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072667288] [2022-01-18 06:08:33,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072667288] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:08:33,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330667177] [2022-01-18 06:08:33,432 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:08:33,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:08:33,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:08:33,434 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 06:08:33,435 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 06:08:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:08:33,463 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:08:33,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:08:34,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:34,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:34,036 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 06:08:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:34,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:08:34,938 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:08:34,938 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 06:08:35,893 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:35,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330667177] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:08:35,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:08:35,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 33 [2022-01-18 06:08:35,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960636683] [2022-01-18 06:08:35,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:08:35,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 06:08:35,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:08:35,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 06:08:35,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 06:08:35,894 INFO L87 Difference]: Start difference. First operand 3523 states and 7831 transitions. Second operand has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:37,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:08:37,764 INFO L93 Difference]: Finished difference Result 5765 states and 12652 transitions. [2022-01-18 06:08:37,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 06:08:37,764 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have 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 06:08:37,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:08:37,771 INFO L225 Difference]: With dead ends: 5765 [2022-01-18 06:08:37,771 INFO L226 Difference]: Without dead ends: 5453 [2022-01-18 06:08:37,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1714 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1056, Invalid=4950, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 06:08:37,772 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 346 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 243 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:08:37,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 1472 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1124 Invalid, 0 Unknown, 243 Unchecked, 0.6s Time] [2022-01-18 06:08:37,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5453 states. [2022-01-18 06:08:37,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5453 to 3586. [2022-01-18 06:08:37,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 3585 states have (on average 2.224825662482566) internal successors, (7976), 3585 states have internal predecessors, (7976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 7976 transitions. [2022-01-18 06:08:37,823 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 7976 transitions. Word has length 35 [2022-01-18 06:08:37,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:08:37,824 INFO L470 AbstractCegarLoop]: Abstraction has 3586 states and 7976 transitions. [2022-01-18 06:08:37,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 7976 transitions. [2022-01-18 06:08:37,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:08:37,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:08:37,828 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:08:37,843 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 06:08:38,028 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 06:08:38,028 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:08:38,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:08:38,029 INFO L85 PathProgramCache]: Analyzing trace with hash -210001014, now seen corresponding path program 62 times [2022-01-18 06:08:38,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:08:38,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232027265] [2022-01-18 06:08:38,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:08:38,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:08:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:08:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:38,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:08:38,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232027265] [2022-01-18 06:08:38,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232027265] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:08:38,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086527945] [2022-01-18 06:08:38,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:08:38,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:08:38,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:08:38,384 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 06:08:38,385 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 06:08:38,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:08:38,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:08:38,416 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:08:38,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:08:39,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:39,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:39,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:39,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:39,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:39,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:39,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:39,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:39,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:39,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:39,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:39,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:39,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:39,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:39,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:39,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:39,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:39,027 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 06:08:39,046 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:39,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:08:39,946 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:08:39,946 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 06:08:40,819 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:40,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086527945] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:08:40,819 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:08:40,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2022-01-18 06:08:40,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625961083] [2022-01-18 06:08:40,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:08:40,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 06:08:40,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:08:40,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 06:08:40,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=983, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 06:08:40,820 INFO L87 Difference]: Start difference. First operand 3586 states and 7976 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:42,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:08:42,176 INFO L93 Difference]: Finished difference Result 5283 states and 11632 transitions. [2022-01-18 06:08:42,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 06:08:42,176 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have 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 06:08:42,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:08:42,182 INFO L225 Difference]: With dead ends: 5283 [2022-01-18 06:08:42,183 INFO L226 Difference]: Without dead ends: 5238 [2022-01-18 06:08:42,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1025 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=697, Invalid=3463, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 06:08:42,183 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 271 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 271 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:08:42,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 1385 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 944 Invalid, 0 Unknown, 271 Unchecked, 0.5s Time] [2022-01-18 06:08:42,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5238 states. [2022-01-18 06:08:42,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5238 to 3736. [2022-01-18 06:08:42,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3736 states, 3735 states have (on average 2.23239625167336) internal successors, (8338), 3735 states have internal predecessors, (8338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:42,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 8338 transitions. [2022-01-18 06:08:42,228 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 8338 transitions. Word has length 35 [2022-01-18 06:08:42,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:08:42,229 INFO L470 AbstractCegarLoop]: Abstraction has 3736 states and 8338 transitions. [2022-01-18 06:08:42,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:42,229 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 8338 transitions. [2022-01-18 06:08:42,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-18 06:08:42,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:08:42,231 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:08:42,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-01-18 06:08:42,432 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 06:08:42,432 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:08:42,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:08:42,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1249970874, now seen corresponding path program 63 times [2022-01-18 06:08:42,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:08:42,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660435414] [2022-01-18 06:08:42,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:08:42,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:08:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:08:42,778 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:42,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:08:42,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660435414] [2022-01-18 06:08:42,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660435414] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:08:42,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765564455] [2022-01-18 06:08:42,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:08:42,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:08:42,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:08:42,780 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 06:08:42,781 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 06:08:42,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 06:08:42,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:08:42,805 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:08:42,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:08:43,299 INFO L353 Elim1Store]: treesize reduction 170, result has 0.6 percent of original size [2022-01-18 06:08:43,299 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 06:08:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:43,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:08:44,227 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:08:44,228 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 06:08:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:45,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765564455] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:08:45,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:08:45,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-01-18 06:08:45,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510275607] [2022-01-18 06:08:45,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:08:45,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 06:08:45,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:08:45,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 06:08:45,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=926, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 06:08:45,273 INFO L87 Difference]: Start difference. First operand 3736 states and 8338 transitions. Second operand has 34 states, 34 states have (on average 2.176470588235294) internal successors, (74), 33 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 06:08:46,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:08:46,640 INFO L93 Difference]: Finished difference Result 5713 states and 12688 transitions. [2022-01-18 06:08:46,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 06:08:46,640 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.176470588235294) internal successors, (74), 33 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 06:08:46,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:08:46,647 INFO L225 Difference]: With dead ends: 5713 [2022-01-18 06:08:46,647 INFO L226 Difference]: Without dead ends: 5683 [2022-01-18 06:08:46,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=610, Invalid=3050, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 06:08:46,648 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 245 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:08:46,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 1357 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 06:08:46,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5683 states. [2022-01-18 06:08:46,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5683 to 3696. [2022-01-18 06:08:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 3695 states have (on average 2.230581867388363) internal successors, (8242), 3695 states have internal predecessors, (8242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:46,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 8242 transitions. [2022-01-18 06:08:46,713 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 8242 transitions. Word has length 35 [2022-01-18 06:08:46,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:08:46,713 INFO L470 AbstractCegarLoop]: Abstraction has 3696 states and 8242 transitions. [2022-01-18 06:08:46,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.176470588235294) internal successors, (74), 33 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 06:08:46,713 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 8242 transitions. [2022-01-18 06:08:46,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 06:08:46,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:08:46,716 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:08:46,732 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 06:08:46,916 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 06:08:46,917 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:08:46,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:08:46,917 INFO L85 PathProgramCache]: Analyzing trace with hash -550040129, now seen corresponding path program 64 times [2022-01-18 06:08:46,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:08:46,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894274368] [2022-01-18 06:08:46,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:08:46,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:08:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:08:46,974 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 34 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:08:46,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:08:46,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894274368] [2022-01-18 06:08:46,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894274368] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:08:46,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852726828] [2022-01-18 06:08:46,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:08:46,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:08:46,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:08:46,976 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 06:08:46,977 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 06:08:47,007 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:08:47,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:08:47,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 06:08:47,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:08:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 34 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 06:08:47,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:08:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 34 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 06:08:47,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852726828] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:08:47,118 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:08:47,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2022-01-18 06:08:47,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576555376] [2022-01-18 06:08:47,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:08:47,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 06:08:47,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:08:47,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 06:08:47,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-18 06:08:47,119 INFO L87 Difference]: Start difference. First operand 3696 states and 8242 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:47,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:08:47,176 INFO L93 Difference]: Finished difference Result 4782 states and 10779 transitions. [2022-01-18 06:08:47,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 06:08:47,177 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 06:08:47,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:08:47,183 INFO L225 Difference]: With dead ends: 4782 [2022-01-18 06:08:47,183 INFO L226 Difference]: Without dead ends: 4767 [2022-01-18 06:08:47,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 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 06:08:47,183 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 79 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:08:47,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 80 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:08:47,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4767 states. [2022-01-18 06:08:47,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4767 to 4371. [2022-01-18 06:08:47,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4371 states, 4370 states have (on average 2.2496567505720826) internal successors, (9831), 4370 states have internal predecessors, (9831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:47,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4371 states to 4371 states and 9831 transitions. [2022-01-18 06:08:47,232 INFO L78 Accepts]: Start accepts. Automaton has 4371 states and 9831 transitions. Word has length 36 [2022-01-18 06:08:47,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:08:47,232 INFO L470 AbstractCegarLoop]: Abstraction has 4371 states and 9831 transitions. [2022-01-18 06:08:47,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:47,232 INFO L276 IsEmpty]: Start isEmpty. Operand 4371 states and 9831 transitions. [2022-01-18 06:08:47,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 06:08:47,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:08:47,235 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:08:47,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-01-18 06:08:47,437 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 06:08:47,437 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:08:47,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:08:47,437 INFO L85 PathProgramCache]: Analyzing trace with hash -75450097, now seen corresponding path program 65 times [2022-01-18 06:08:47,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:08:47,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321165951] [2022-01-18 06:08:47,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:08:47,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:08:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:08:47,500 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 39 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:47,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:08:47,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321165951] [2022-01-18 06:08:47,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321165951] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:08:47,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822090171] [2022-01-18 06:08:47,501 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:08:47,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:08:47,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:08:47,502 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 06:08:47,502 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 06:08:47,527 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-01-18 06:08:47,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:08:47,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 06:08:47,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:08:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 39 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:47,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:08:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 39 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:47,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822090171] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:08:47,638 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:08:47,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2022-01-18 06:08:47,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362289206] [2022-01-18 06:08:47,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:08:47,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 06:08:47,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:08:47,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 06:08:47,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-01-18 06:08:47,639 INFO L87 Difference]: Start difference. First operand 4371 states and 9831 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:47,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:08:47,691 INFO L93 Difference]: Finished difference Result 6001 states and 13669 transitions. [2022-01-18 06:08:47,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 06:08:47,692 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 06:08:47,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:08:47,699 INFO L225 Difference]: With dead ends: 6001 [2022-01-18 06:08:47,699 INFO L226 Difference]: Without dead ends: 5994 [2022-01-18 06:08:47,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 75 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 06:08:47,700 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 103 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:08:47,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 97 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:08:47,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5994 states. [2022-01-18 06:08:47,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5994 to 5544. [2022-01-18 06:08:47,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5544 states, 5543 states have (on average 2.28287930723435) internal successors, (12654), 5543 states have internal predecessors, (12654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:47,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5544 states to 5544 states and 12654 transitions. [2022-01-18 06:08:47,768 INFO L78 Accepts]: Start accepts. Automaton has 5544 states and 12654 transitions. Word has length 36 [2022-01-18 06:08:47,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:08:47,768 INFO L470 AbstractCegarLoop]: Abstraction has 5544 states and 12654 transitions. [2022-01-18 06:08:47,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:47,768 INFO L276 IsEmpty]: Start isEmpty. Operand 5544 states and 12654 transitions. [2022-01-18 06:08:47,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 06:08:47,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:08:47,772 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:08:47,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-01-18 06:08:47,973 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 06:08:47,973 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:08:47,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:08:47,973 INFO L85 PathProgramCache]: Analyzing trace with hash -126350153, now seen corresponding path program 66 times [2022-01-18 06:08:47,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:08:47,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363134747] [2022-01-18 06:08:47,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:08:47,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:08:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:08:48,255 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:48,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:08:48,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363134747] [2022-01-18 06:08:48,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363134747] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:08:48,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769403604] [2022-01-18 06:08:48,256 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:08:48,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:08:48,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:08:48,260 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 06:08:48,261 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 06:08:48,291 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-01-18 06:08:48,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:08:48,293 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 53 conjunts are in the unsatisfiable core [2022-01-18 06:08:48,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:08:49,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:49,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:49,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:49,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:49,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:49,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:49,088 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 107 treesize of output 39 [2022-01-18 06:08:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 3 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:49,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:08:50,025 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:08:50,026 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 06:08:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:50,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769403604] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:08:50,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:08:50,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 39 [2022-01-18 06:08:50,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264533755] [2022-01-18 06:08:50,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:08:50,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 06:08:50,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:08:50,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 06:08:50,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1303, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 06:08:50,895 INFO L87 Difference]: Start difference. First operand 5544 states and 12654 transitions. Second operand has 40 states, 40 states have (on average 2.45) internal successors, (98), 39 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 06:08:52,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:08:52,771 INFO L93 Difference]: Finished difference Result 9557 states and 21469 transitions. [2022-01-18 06:08:52,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 06:08:52,771 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.45) internal successors, (98), 39 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 38 [2022-01-18 06:08:52,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:08:52,787 INFO L225 Difference]: With dead ends: 9557 [2022-01-18 06:08:52,787 INFO L226 Difference]: Without dead ends: 8975 [2022-01-18 06:08:52,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1718 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=937, Invalid=5069, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 06:08:52,788 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 488 mSDsluCounter, 2060 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 442 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:08:52,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 1451 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1156 Invalid, 0 Unknown, 442 Unchecked, 0.6s Time] [2022-01-18 06:08:52,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8975 states. [2022-01-18 06:08:52,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8975 to 5433. [2022-01-18 06:08:52,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5433 states, 5432 states have (on average 2.2790868924889542) internal successors, (12380), 5432 states have internal predecessors, (12380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:52,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5433 states to 5433 states and 12380 transitions. [2022-01-18 06:08:52,874 INFO L78 Accepts]: Start accepts. Automaton has 5433 states and 12380 transitions. Word has length 38 [2022-01-18 06:08:52,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:08:52,874 INFO L470 AbstractCegarLoop]: Abstraction has 5433 states and 12380 transitions. [2022-01-18 06:08:52,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.45) internal successors, (98), 39 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 06:08:52,874 INFO L276 IsEmpty]: Start isEmpty. Operand 5433 states and 12380 transitions. [2022-01-18 06:08:52,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 06:08:52,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:08:52,878 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:08:52,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-01-18 06:08:53,079 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 06:08:53,079 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:08:53,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:08:53,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1118066151, now seen corresponding path program 67 times [2022-01-18 06:08:53,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:08:53,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351817843] [2022-01-18 06:08:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:08:53,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:08:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:08:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:53,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:08:53,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351817843] [2022-01-18 06:08:53,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351817843] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:08:53,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562306929] [2022-01-18 06:08:53,350 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:08:53,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:08:53,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:08:53,351 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 06:08:53,351 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 06:08:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:08:53,375 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:08:53,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:08:54,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:54,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:54,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:54,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:54,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:54,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:54,091 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 06:08:54,111 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:54,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:08:55,028 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:08:55,028 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 06:08:56,172 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 24 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:56,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562306929] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:08:56,173 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:08:56,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2022-01-18 06:08:56,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532536478] [2022-01-18 06:08:56,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:08:56,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 06:08:56,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:08:56,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 06:08:56,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1241, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 06:08:56,174 INFO L87 Difference]: Start difference. First operand 5433 states and 12380 transitions. Second operand has 39 states, 39 states have (on average 2.5128205128205128) internal successors, (98), 38 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 06:08:57,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:08:57,235 INFO L93 Difference]: Finished difference Result 7645 states and 17175 transitions. [2022-01-18 06:08:57,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 06:08:57,236 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.5128205128205128) internal successors, (98), 38 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 38 [2022-01-18 06:08:57,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:08:57,268 INFO L225 Difference]: With dead ends: 7645 [2022-01-18 06:08:57,268 INFO L226 Difference]: Without dead ends: 7615 [2022-01-18 06:08:57,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1093 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=619, Invalid=3413, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 06:08:57,268 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 244 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 422 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:08:57,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 1053 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 613 Invalid, 0 Unknown, 422 Unchecked, 0.3s Time] [2022-01-18 06:08:57,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7615 states. [2022-01-18 06:08:57,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7615 to 5418. [2022-01-18 06:08:57,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5417 states have (on average 2.278936680819642) internal successors, (12345), 5417 states have internal predecessors, (12345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:08:57,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 12345 transitions. [2022-01-18 06:08:57,345 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 12345 transitions. Word has length 38 [2022-01-18 06:08:57,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:08:57,345 INFO L470 AbstractCegarLoop]: Abstraction has 5418 states and 12345 transitions. [2022-01-18 06:08:57,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.5128205128205128) internal successors, (98), 38 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 06:08:57,345 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 12345 transitions. [2022-01-18 06:08:57,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 06:08:57,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:08:57,349 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:08:57,365 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 06:08:57,549 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 06:08:57,550 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:08:57,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:08:57,551 INFO L85 PathProgramCache]: Analyzing trace with hash 179362343, now seen corresponding path program 68 times [2022-01-18 06:08:57,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:08:57,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555365513] [2022-01-18 06:08:57,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:08:57,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:08:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:08:57,873 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:57,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:08:57,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555365513] [2022-01-18 06:08:57,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555365513] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:08:57,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331659416] [2022-01-18 06:08:57,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:08:57,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:08:57,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:08:57,875 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 06:08:57,876 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 06:08:57,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:08:57,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:08:57,905 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:08:57,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:08:58,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:58,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,631 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:58,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:58,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:08:58,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:08:58,637 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 06:08:58,656 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:08:58,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:08:59,594 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:08:59,595 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 06:09:00,260 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:00,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331659416] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:00,261 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:00,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-01-18 06:09:00,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799999269] [2022-01-18 06:09:00,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:00,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 06:09:00,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:00,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 06:09:00,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1174, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 06:09:00,262 INFO L87 Difference]: Start difference. First operand 5418 states and 12345 transitions. Second operand has 38 states, 38 states have (on average 2.5) internal successors, (95), 37 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:01,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:01,698 INFO L93 Difference]: Finished difference Result 8029 states and 18002 transitions. [2022-01-18 06:09:01,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 06:09:01,698 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.5) internal successors, (95), 37 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-01-18 06:09:01,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:01,711 INFO L225 Difference]: With dead ends: 8029 [2022-01-18 06:09:01,712 INFO L226 Difference]: Without dead ends: 7999 [2022-01-18 06:09:01,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=835, Invalid=4135, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 06:09:01,713 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 244 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 310 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:01,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 1107 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 683 Invalid, 0 Unknown, 310 Unchecked, 0.4s Time] [2022-01-18 06:09:01,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7999 states. [2022-01-18 06:09:01,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7999 to 5406. [2022-01-18 06:09:01,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 5405 states have (on average 2.2788159111933397) internal successors, (12317), 5405 states have internal predecessors, (12317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:01,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 12317 transitions. [2022-01-18 06:09:01,805 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 12317 transitions. Word has length 38 [2022-01-18 06:09:01,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:01,805 INFO L470 AbstractCegarLoop]: Abstraction has 5406 states and 12317 transitions. [2022-01-18 06:09:01,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.5) internal successors, (95), 37 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:01,805 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 12317 transitions. [2022-01-18 06:09:01,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 06:09:01,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:01,811 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:01,832 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 06:09:02,022 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 06:09:02,023 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:09:02,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:02,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1553836215, now seen corresponding path program 69 times [2022-01-18 06:09:02,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:02,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683510420] [2022-01-18 06:09:02,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:02,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:02,363 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:02,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:02,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683510420] [2022-01-18 06:09:02,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683510420] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:02,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54012323] [2022-01-18 06:09:02,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:09:02,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:02,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:02,368 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 06:09:02,369 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 06:09:02,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-01-18 06:09:02,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:02,401 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:09:02,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:03,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:03,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:03,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,153 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:03,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:03,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:03,155 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 06:09:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:03,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:04,090 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:09:04,091 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 06:09:05,097 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:05,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54012323] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:05,098 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:05,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-01-18 06:09:05,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542780743] [2022-01-18 06:09:05,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:05,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 06:09:05,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:05,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 06:09:05,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1174, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 06:09:05,098 INFO L87 Difference]: Start difference. First operand 5406 states and 12317 transitions. Second operand has 38 states, 38 states have (on average 2.5) internal successors, (95), 37 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:07,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:07,315 INFO L93 Difference]: Finished difference Result 6913 states and 15499 transitions. [2022-01-18 06:09:07,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 06:09:07,315 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.5) internal successors, (95), 37 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-01-18 06:09:07,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:07,325 INFO L225 Difference]: With dead ends: 6913 [2022-01-18 06:09:07,325 INFO L226 Difference]: Without dead ends: 6895 [2022-01-18 06:09:07,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2367 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1185, Invalid=6647, Unknown=0, NotChecked=0, Total=7832 [2022-01-18 06:09:07,326 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 272 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 379 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:07,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 1354 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1036 Invalid, 0 Unknown, 379 Unchecked, 0.6s Time] [2022-01-18 06:09:07,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6895 states. [2022-01-18 06:09:07,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6895 to 5612. [2022-01-18 06:09:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5612 states, 5611 states have (on average 2.283193726608448) internal successors, (12811), 5611 states have internal predecessors, (12811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:07,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5612 states to 5612 states and 12811 transitions. [2022-01-18 06:09:07,401 INFO L78 Accepts]: Start accepts. Automaton has 5612 states and 12811 transitions. Word has length 38 [2022-01-18 06:09:07,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:07,401 INFO L470 AbstractCegarLoop]: Abstraction has 5612 states and 12811 transitions. [2022-01-18 06:09:07,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.5) internal successors, (95), 37 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:07,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5612 states and 12811 transitions. [2022-01-18 06:09:07,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 06:09:07,405 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:07,405 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:07,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-01-18 06:09:07,605 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 06:09:07,605 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:09:07,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:07,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1601733385, now seen corresponding path program 70 times [2022-01-18 06:09:07,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:07,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321458017] [2022-01-18 06:09:07,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:07,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:07,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:07,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321458017] [2022-01-18 06:09:07,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321458017] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:07,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124458007] [2022-01-18 06:09:07,881 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:09:07,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:07,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:07,882 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 06:09:07,883 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 06:09:07,905 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:09:07,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:07,906 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:09:07,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:08,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:08,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:08,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:08,531 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 06:09:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:08,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:09,448 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:09:09,449 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 06:09:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 8 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:10,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124458007] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:10,493 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:10,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 34 [2022-01-18 06:09:10,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696902739] [2022-01-18 06:09:10,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:10,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 06:09:10,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:10,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 06:09:10,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 06:09:10,493 INFO L87 Difference]: Start difference. First operand 5612 states and 12811 transitions. Second operand has 35 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 34 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:12,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:12,336 INFO L93 Difference]: Finished difference Result 9861 states and 22431 transitions. [2022-01-18 06:09:12,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 06:09:12,336 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 34 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-01-18 06:09:12,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:12,349 INFO L225 Difference]: With dead ends: 9861 [2022-01-18 06:09:12,349 INFO L226 Difference]: Without dead ends: 9397 [2022-01-18 06:09:12,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1322 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=757, Invalid=4213, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 06:09:12,350 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 426 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 453 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:12,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 1761 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1294 Invalid, 0 Unknown, 453 Unchecked, 0.6s Time] [2022-01-18 06:09:12,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9397 states. [2022-01-18 06:09:12,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9397 to 6792. [2022-01-18 06:09:12,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6792 states, 6791 states have (on average 2.298336032984833) internal successors, (15608), 6791 states have internal predecessors, (15608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:12,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6792 states to 6792 states and 15608 transitions. [2022-01-18 06:09:12,461 INFO L78 Accepts]: Start accepts. Automaton has 6792 states and 15608 transitions. Word has length 38 [2022-01-18 06:09:12,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:12,461 INFO L470 AbstractCegarLoop]: Abstraction has 6792 states and 15608 transitions. [2022-01-18 06:09:12,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 34 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:12,462 INFO L276 IsEmpty]: Start isEmpty. Operand 6792 states and 15608 transitions. [2022-01-18 06:09:12,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 06:09:12,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:12,482 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:12,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-01-18 06:09:12,682 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 06:09:12,683 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:09:12,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:12,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1413514287, now seen corresponding path program 71 times [2022-01-18 06:09:12,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:12,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751708116] [2022-01-18 06:09:12,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:12,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:12,948 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 06:09:12,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:12,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751708116] [2022-01-18 06:09:12,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751708116] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:12,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284990750] [2022-01-18 06:09:12,949 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:09:12,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:12,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:12,950 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 06:09:12,950 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 06:09:12,981 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-01-18 06:09:12,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:12,982 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 06:09:12,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:13,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:13,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:13,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:13,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:13,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:13,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:13,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:13,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:13,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:13,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:13,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:13,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:13,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:13,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:13,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:13,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:13,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:13,527 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 06:09:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 06:09:13,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:14,449 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:09:14,450 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 06:09:15,189 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 71 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 06:09:15,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284990750] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:15,189 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:15,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 33 [2022-01-18 06:09:15,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869723449] [2022-01-18 06:09:15,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:15,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 06:09:15,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:15,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 06:09:15,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 06:09:15,190 INFO L87 Difference]: Start difference. First operand 6792 states and 15608 transitions. Second operand has 34 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:16,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:16,263 INFO L93 Difference]: Finished difference Result 9603 states and 21742 transitions. [2022-01-18 06:09:16,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 06:09:16,263 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-01-18 06:09:16,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:16,277 INFO L225 Difference]: With dead ends: 9603 [2022-01-18 06:09:16,277 INFO L226 Difference]: Without dead ends: 9545 [2022-01-18 06:09:16,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 52 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=529, Invalid=2441, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 06:09:16,277 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 235 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:16,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 959 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 710 Invalid, 0 Unknown, 153 Unchecked, 0.4s Time] [2022-01-18 06:09:16,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9545 states. [2022-01-18 06:09:16,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9545 to 7236. [2022-01-18 06:09:16,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 7235 states have (on average 2.31596406357982) internal successors, (16756), 7235 states have internal predecessors, (16756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:16,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 16756 transitions. [2022-01-18 06:09:16,383 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 16756 transitions. Word has length 38 [2022-01-18 06:09:16,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:16,383 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 16756 transitions. [2022-01-18 06:09:16,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.3823529411764706) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:16,384 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 16756 transitions. [2022-01-18 06:09:16,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-18 06:09:16,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:16,388 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:16,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:16,588 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 06:09:16,589 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:09:16,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:16,589 INFO L85 PathProgramCache]: Analyzing trace with hash 378106983, now seen corresponding path program 72 times [2022-01-18 06:09:16,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:16,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407150193] [2022-01-18 06:09:16,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:16,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:16,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:16,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407150193] [2022-01-18 06:09:16,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407150193] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:16,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577728877] [2022-01-18 06:09:16,885 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:09:16,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:16,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:16,886 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 06:09:16,887 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 06:09:16,910 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-01-18 06:09:16,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:16,911 WARN L261 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 53 conjunts are in the unsatisfiable core [2022-01-18 06:09:16,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:17,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:17,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:17,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:17,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:17,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:17,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:17,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:17,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:17,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:17,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:17,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:17,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:17,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:17,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:17,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:17,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:17,595 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 107 treesize of output 39 [2022-01-18 06:09:17,615 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:17,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:18,510 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-01-18 06:09:18,510 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 06:09:19,147 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:19,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577728877] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:19,148 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:19,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 35 [2022-01-18 06:09:19,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688421356] [2022-01-18 06:09:19,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:19,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 06:09:19,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:19,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 06:09:19,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 06:09:19,148 INFO L87 Difference]: Start difference. First operand 7236 states and 16756 transitions. Second operand has 36 states, 36 states have (on average 2.388888888888889) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:21,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:21,435 INFO L93 Difference]: Finished difference Result 11795 states and 26648 transitions. [2022-01-18 06:09:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 06:09:21,435 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.388888888888889) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-01-18 06:09:21,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:21,452 INFO L225 Difference]: With dead ends: 11795 [2022-01-18 06:09:21,452 INFO L226 Difference]: Without dead ends: 11076 [2022-01-18 06:09:21,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1624 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=984, Invalid=5178, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 06:09:21,452 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 515 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 851 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:21,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 1949 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1459 Invalid, 0 Unknown, 851 Unchecked, 0.8s Time] [2022-01-18 06:09:21,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11076 states. [2022-01-18 06:09:21,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11076 to 7037. [2022-01-18 06:09:21,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7037 states, 7036 states have (on average 2.3099772598067085) internal successors, (16253), 7036 states have internal predecessors, (16253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:21,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 16253 transitions. [2022-01-18 06:09:21,575 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 16253 transitions. Word has length 38 [2022-01-18 06:09:21,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:21,575 INFO L470 AbstractCegarLoop]: Abstraction has 7037 states and 16253 transitions. [2022-01-18 06:09:21,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.388888888888889) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:21,576 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 16253 transitions. [2022-01-18 06:09:21,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:09:21,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:21,580 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:21,597 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 06:09:21,780 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 06:09:21,781 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:09:21,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1281737470, now seen corresponding path program 73 times [2022-01-18 06:09:21,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:21,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727110672] [2022-01-18 06:09:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:21,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:22,079 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:22,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:22,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727110672] [2022-01-18 06:09:22,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727110672] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:22,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122094487] [2022-01-18 06:09:22,079 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:09:22,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:22,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:22,080 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 06:09:22,081 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 06:09:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:22,104 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:09:22,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:22,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:22,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:22,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:22,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,976 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:22,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:22,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:22,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:22,982 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 06:09:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:23,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:24,336 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:09:24,337 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 06:09:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:25,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122094487] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:25,402 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:25,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 43 [2022-01-18 06:09:25,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447823961] [2022-01-18 06:09:25,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:25,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-18 06:09:25,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:25,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-18 06:09:25,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1613, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 06:09:25,403 INFO L87 Difference]: Start difference. First operand 7037 states and 16253 transitions. Second operand has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 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 06:09:29,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:29,807 INFO L93 Difference]: Finished difference Result 16057 states and 36105 transitions. [2022-01-18 06:09:29,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-18 06:09:29,808 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 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 39 [2022-01-18 06:09:29,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:29,835 INFO L225 Difference]: With dead ends: 16057 [2022-01-18 06:09:29,835 INFO L226 Difference]: Without dead ends: 15793 [2022-01-18 06:09:29,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6018 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2248, Invalid=15308, Unknown=0, NotChecked=0, Total=17556 [2022-01-18 06:09:29,836 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 477 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 320 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:29,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 1794 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1521 Invalid, 0 Unknown, 320 Unchecked, 1.0s Time] [2022-01-18 06:09:29,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15793 states. [2022-01-18 06:09:29,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15793 to 8514. [2022-01-18 06:09:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8514 states, 8513 states have (on average 2.3016562903794195) internal successors, (19594), 8513 states have internal predecessors, (19594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:29,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8514 states to 8514 states and 19594 transitions. [2022-01-18 06:09:29,994 INFO L78 Accepts]: Start accepts. Automaton has 8514 states and 19594 transitions. Word has length 39 [2022-01-18 06:09:29,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:29,994 INFO L470 AbstractCegarLoop]: Abstraction has 8514 states and 19594 transitions. [2022-01-18 06:09:29,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 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 06:09:29,994 INFO L276 IsEmpty]: Start isEmpty. Operand 8514 states and 19594 transitions. [2022-01-18 06:09:29,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:09:29,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:29,999 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:30,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:30,200 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 06:09:30,200 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:09:30,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:30,200 INFO L85 PathProgramCache]: Analyzing trace with hash 92736402, now seen corresponding path program 74 times [2022-01-18 06:09:30,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:30,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523915767] [2022-01-18 06:09:30,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:30,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:30,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:30,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523915767] [2022-01-18 06:09:30,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523915767] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:30,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788336577] [2022-01-18 06:09:30,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:09:30,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:30,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:30,497 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 06:09:30,498 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 06:09:30,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:09:30,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:30,522 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:09:30,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:31,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:31,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:31,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:31,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:31,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:31,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:31,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:31,430 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 06:09:31,457 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:31,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:32,797 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:09:32,797 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 06:09:34,317 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:34,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788336577] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:34,318 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:34,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 43 [2022-01-18 06:09:34,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471442500] [2022-01-18 06:09:34,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:34,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-18 06:09:34,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:34,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-18 06:09:34,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1613, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 06:09:34,319 INFO L87 Difference]: Start difference. First operand 8514 states and 19594 transitions. Second operand has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 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 06:09:38,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:38,851 INFO L93 Difference]: Finished difference Result 15092 states and 34042 transitions. [2022-01-18 06:09:38,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-18 06:09:38,852 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 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 39 [2022-01-18 06:09:38,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:38,875 INFO L225 Difference]: With dead ends: 15092 [2022-01-18 06:09:38,875 INFO L226 Difference]: Without dead ends: 15016 [2022-01-18 06:09:38,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7126 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2588, Invalid=17434, Unknown=0, NotChecked=0, Total=20022 [2022-01-18 06:09:38,876 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 376 mSDsluCounter, 2649 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 2255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 433 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:38,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 2612 Invalid, 2255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1711 Invalid, 0 Unknown, 433 Unchecked, 1.1s Time] [2022-01-18 06:09:38,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15016 states. [2022-01-18 06:09:38,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15016 to 8421. [2022-01-18 06:09:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8421 states, 8420 states have (on average 2.3) internal successors, (19366), 8420 states have internal predecessors, (19366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:39,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 19366 transitions. [2022-01-18 06:09:39,010 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 19366 transitions. Word has length 39 [2022-01-18 06:09:39,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:39,010 INFO L470 AbstractCegarLoop]: Abstraction has 8421 states and 19366 transitions. [2022-01-18 06:09:39,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 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 06:09:39,011 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 19366 transitions. [2022-01-18 06:09:39,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:09:39,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:39,015 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:39,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-01-18 06:09:39,215 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 06:09:39,216 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:09:39,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:39,216 INFO L85 PathProgramCache]: Analyzing trace with hash -701560062, now seen corresponding path program 75 times [2022-01-18 06:09:39,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:39,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979618330] [2022-01-18 06:09:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:39,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:39,530 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:39,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:39,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979618330] [2022-01-18 06:09:39,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979618330] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:39,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289527989] [2022-01-18 06:09:39,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:09:39,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:39,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:39,531 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 06:09:39,532 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 06:09:39,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-01-18 06:09:39,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:39,557 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:09:39,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:40,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:40,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:40,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:40,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:40,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:40,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:40,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:40,392 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 06:09:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:40,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:41,750 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:09:41,750 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 06:09:43,948 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:43,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289527989] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:43,948 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:43,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 41 [2022-01-18 06:09:43,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729697221] [2022-01-18 06:09:43,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:43,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 06:09:43,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:43,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 06:09:43,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1424, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 06:09:43,949 INFO L87 Difference]: Start difference. First operand 8421 states and 19366 transitions. Second operand has 42 states, 42 states have (on average 2.4047619047619047) internal successors, (101), 41 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 06:09:46,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:46,190 INFO L93 Difference]: Finished difference Result 12776 states and 28757 transitions. [2022-01-18 06:09:46,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 06:09:46,191 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.4047619047619047) internal successors, (101), 41 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 39 [2022-01-18 06:09:46,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:46,212 INFO L225 Difference]: With dead ends: 12776 [2022-01-18 06:09:46,212 INFO L226 Difference]: Without dead ends: 12264 [2022-01-18 06:09:46,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1683 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=750, Invalid=4800, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 06:09:46,213 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 648 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:46,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 1587 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1491 Invalid, 0 Unknown, 148 Unchecked, 0.8s Time] [2022-01-18 06:09:46,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12264 states. [2022-01-18 06:09:46,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12264 to 9219. [2022-01-18 06:09:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9219 states, 9218 states have (on average 2.305272293339119) internal successors, (21250), 9218 states have internal predecessors, (21250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:46,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9219 states to 9219 states and 21250 transitions. [2022-01-18 06:09:46,370 INFO L78 Accepts]: Start accepts. Automaton has 9219 states and 21250 transitions. Word has length 39 [2022-01-18 06:09:46,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:46,371 INFO L470 AbstractCegarLoop]: Abstraction has 9219 states and 21250 transitions. [2022-01-18 06:09:46,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.4047619047619047) internal successors, (101), 41 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 06:09:46,371 INFO L276 IsEmpty]: Start isEmpty. Operand 9219 states and 21250 transitions. [2022-01-18 06:09:46,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:09:46,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:46,375 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:46,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-01-18 06:09:46,575 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 06:09:46,576 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:09:46,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:46,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1714264178, now seen corresponding path program 76 times [2022-01-18 06:09:46,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:46,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651785580] [2022-01-18 06:09:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:46,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:46,872 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:46,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:46,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651785580] [2022-01-18 06:09:46,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651785580] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:46,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657696366] [2022-01-18 06:09:46,873 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:09:46,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:46,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:46,874 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 06:09:46,874 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 06:09:46,899 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:09:46,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:46,900 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:09:46,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:47,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:47,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:47,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,740 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:47,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,745 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:47,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:47,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:47,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:47,747 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 06:09:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:47,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:09:49,098 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:09:49,098 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 06:09:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:50,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657696366] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:09:50,776 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:09:50,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 43 [2022-01-18 06:09:50,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992157884] [2022-01-18 06:09:50,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:09:50,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-18 06:09:50,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:09:50,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-18 06:09:50,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1607, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 06:09:50,777 INFO L87 Difference]: Start difference. First operand 9219 states and 21250 transitions. Second operand has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 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 06:09:54,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:09:54,139 INFO L93 Difference]: Finished difference Result 17075 states and 38717 transitions. [2022-01-18 06:09:54,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 06:09:54,139 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 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 39 [2022-01-18 06:09:54,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:09:54,178 INFO L225 Difference]: With dead ends: 17075 [2022-01-18 06:09:54,178 INFO L226 Difference]: Without dead ends: 16524 [2022-01-18 06:09:54,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3669 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1654, Invalid=9902, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 06:09:54,180 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 595 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 425 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:09:54,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 1539 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1487 Invalid, 0 Unknown, 425 Unchecked, 0.9s Time] [2022-01-18 06:09:54,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16524 states. [2022-01-18 06:09:54,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16524 to 7396. [2022-01-18 06:09:54,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7396 states, 7395 states have (on average 2.2580121703853955) internal successors, (16698), 7395 states have internal predecessors, (16698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:09:54,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7396 states to 7396 states and 16698 transitions. [2022-01-18 06:09:54,357 INFO L78 Accepts]: Start accepts. Automaton has 7396 states and 16698 transitions. Word has length 39 [2022-01-18 06:09:54,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:09:54,357 INFO L470 AbstractCegarLoop]: Abstraction has 7396 states and 16698 transitions. [2022-01-18 06:09:54,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 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 06:09:54,357 INFO L276 IsEmpty]: Start isEmpty. Operand 7396 states and 16698 transitions. [2022-01-18 06:09:54,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:09:54,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:09:54,362 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:09:54,383 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 06:09:54,575 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 06:09:54,575 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:09:54,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:09:54,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1206229246, now seen corresponding path program 77 times [2022-01-18 06:09:54,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:09:54,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134154309] [2022-01-18 06:09:54,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:09:54,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:09:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:09:54,877 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:54,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:09:54,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134154309] [2022-01-18 06:09:54,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134154309] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:09:54,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608370897] [2022-01-18 06:09:54,877 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:09:54,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:09:54,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:09:54,878 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 06:09:54,879 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 06:09:54,915 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 06:09:54,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:09:54,922 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:09:54,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:09:58,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,281 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:58,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:58,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:58,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:58,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:58,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:09:58,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:09:58,302 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 116 treesize of output 44 [2022-01-18 06:09:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:09:58,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:00,751 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,751 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,768 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,782 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,782 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,783 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,783 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,783 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:00,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:01,068 INFO L353 Elim1Store]: treesize reduction 83, result has 77.1 percent of original size [2022-01-18 06:10:01,068 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 57 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 34 case distinctions, treesize of input 124 treesize of output 331 [2022-01-18 06:10:02,090 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:02,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608370897] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:02,091 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:02,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 44 [2022-01-18 06:10:02,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962033200] [2022-01-18 06:10:02,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:02,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 06:10:02,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:02,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 06:10:02,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=1608, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:10:02,092 INFO L87 Difference]: Start difference. First operand 7396 states and 16698 transitions. Second operand has 45 states, 45 states have (on average 2.2666666666666666) internal successors, (102), 44 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 06:10:08,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:08,795 INFO L93 Difference]: Finished difference Result 8120 states and 18145 transitions. [2022-01-18 06:10:08,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 06:10:08,796 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2666666666666666) internal successors, (102), 44 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 39 [2022-01-18 06:10:08,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:08,811 INFO L225 Difference]: With dead ends: 8120 [2022-01-18 06:10:08,811 INFO L226 Difference]: Without dead ends: 8107 [2022-01-18 06:10:08,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=681, Invalid=3609, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 06:10:08,812 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 272 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 452 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:08,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 1076 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 452 Unchecked, 0.1s Time] [2022-01-18 06:10:08,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8107 states. [2022-01-18 06:10:08,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8107 to 7707. [2022-01-18 06:10:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7707 states, 7706 states have (on average 2.252011419672982) internal successors, (17354), 7706 states have internal predecessors, (17354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:08,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7707 states to 7707 states and 17354 transitions. [2022-01-18 06:10:08,938 INFO L78 Accepts]: Start accepts. Automaton has 7707 states and 17354 transitions. Word has length 39 [2022-01-18 06:10:08,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:08,938 INFO L470 AbstractCegarLoop]: Abstraction has 7707 states and 17354 transitions. [2022-01-18 06:10:08,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2666666666666666) internal successors, (102), 44 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 06:10:08,938 INFO L276 IsEmpty]: Start isEmpty. Operand 7707 states and 17354 transitions. [2022-01-18 06:10:08,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:10:08,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:08,944 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:08,966 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 06:10:09,162 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 06:10:09,162 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:10:09,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:09,163 INFO L85 PathProgramCache]: Analyzing trace with hash -788654638, now seen corresponding path program 78 times [2022-01-18 06:10:09,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:09,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686689943] [2022-01-18 06:10:09,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:09,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:09,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:09,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686689943] [2022-01-18 06:10:09,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686689943] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:09,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65473936] [2022-01-18 06:10:09,511 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:10:09,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:09,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:09,512 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 06:10:09,512 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 06:10:09,540 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 06:10:09,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:09,541 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 06:10:09,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:10,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:10,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:10,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:10,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:10,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:10,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:10,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:10,415 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 124 treesize of output 44 [2022-01-18 06:10:10,435 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:10,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:11,793 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:10:11,793 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 06:10:13,686 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:13,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65473936] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:13,686 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:13,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 44 [2022-01-18 06:10:13,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716849248] [2022-01-18 06:10:13,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:13,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 06:10:13,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:13,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 06:10:13,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1686, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:10:13,687 INFO L87 Difference]: Start difference. First operand 7707 states and 17354 transitions. Second operand has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 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 06:10:15,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:15,722 INFO L93 Difference]: Finished difference Result 12919 states and 29043 transitions. [2022-01-18 06:10:15,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 06:10:15,722 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 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 39 [2022-01-18 06:10:15,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:15,742 INFO L225 Difference]: With dead ends: 12919 [2022-01-18 06:10:15,742 INFO L226 Difference]: Without dead ends: 12834 [2022-01-18 06:10:15,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2495 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1255, Invalid=6935, Unknown=0, NotChecked=0, Total=8190 [2022-01-18 06:10:15,743 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 324 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:15,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 1075 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 732 Invalid, 0 Unknown, 176 Unchecked, 0.4s Time] [2022-01-18 06:10:15,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12834 states. [2022-01-18 06:10:15,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12834 to 5357. [2022-01-18 06:10:15,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5357 states, 5356 states have (on average 2.251493651979089) internal successors, (12059), 5356 states have internal predecessors, (12059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:15,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5357 states to 5357 states and 12059 transitions. [2022-01-18 06:10:15,835 INFO L78 Accepts]: Start accepts. Automaton has 5357 states and 12059 transitions. Word has length 39 [2022-01-18 06:10:15,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:15,835 INFO L470 AbstractCegarLoop]: Abstraction has 5357 states and 12059 transitions. [2022-01-18 06:10:15,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 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 06:10:15,835 INFO L276 IsEmpty]: Start isEmpty. Operand 5357 states and 12059 transitions. [2022-01-18 06:10:15,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:10:15,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:15,839 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:15,861 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 06:10:16,051 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 06:10:16,051 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:10:16,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:16,052 INFO L85 PathProgramCache]: Analyzing trace with hash 2087414082, now seen corresponding path program 79 times [2022-01-18 06:10:16,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:16,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356634895] [2022-01-18 06:10:16,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:16,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:16,349 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:16,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:16,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356634895] [2022-01-18 06:10:16,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356634895] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:16,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142661271] [2022-01-18 06:10:16,349 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:10:16,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:16,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:16,350 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 06:10:16,351 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 06:10:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:16,375 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:10:16,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:17,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:17,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:17,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:17,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:17,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:17,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:17,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:17,219 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 06:10:17,238 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:17,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:18,563 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:10:18,563 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 06:10:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:20,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142661271] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:20,662 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:20,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 42 [2022-01-18 06:10:20,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083512508] [2022-01-18 06:10:20,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:20,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 06:10:20,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:20,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 06:10:20,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1497, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 06:10:20,663 INFO L87 Difference]: Start difference. First operand 5357 states and 12059 transitions. Second operand has 43 states, 43 states have (on average 2.3488372093023258) internal successors, (101), 42 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 06:10:22,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:22,989 INFO L93 Difference]: Finished difference Result 8956 states and 19765 transitions. [2022-01-18 06:10:22,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 06:10:22,990 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.3488372093023258) internal successors, (101), 42 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 39 [2022-01-18 06:10:22,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:23,002 INFO L225 Difference]: With dead ends: 8956 [2022-01-18 06:10:23,002 INFO L226 Difference]: Without dead ends: 8462 [2022-01-18 06:10:23,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1804 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=896, Invalid=4956, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 06:10:23,003 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 672 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 1881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:23,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 1642 Invalid, 1881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1605 Invalid, 0 Unknown, 119 Unchecked, 0.9s Time] [2022-01-18 06:10:23,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8462 states. [2022-01-18 06:10:23,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8462 to 5762. [2022-01-18 06:10:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5762 states, 5761 states have (on average 2.2617601110918244) internal successors, (13030), 5761 states have internal predecessors, (13030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:23,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5762 states to 5762 states and 13030 transitions. [2022-01-18 06:10:23,094 INFO L78 Accepts]: Start accepts. Automaton has 5762 states and 13030 transitions. Word has length 39 [2022-01-18 06:10:23,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:23,094 INFO L470 AbstractCegarLoop]: Abstraction has 5762 states and 13030 transitions. [2022-01-18 06:10:23,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.3488372093023258) internal successors, (101), 42 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 06:10:23,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5762 states and 13030 transitions. [2022-01-18 06:10:23,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:10:23,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:23,098 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:23,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-01-18 06:10:23,298 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 06:10:23,299 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:10:23,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:23,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1582744898, now seen corresponding path program 80 times [2022-01-18 06:10:23,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:23,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521211821] [2022-01-18 06:10:23,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:23,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:23,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:23,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521211821] [2022-01-18 06:10:23,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521211821] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:23,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024788046] [2022-01-18 06:10:23,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:10:23,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:23,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:23,636 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 06:10:23,637 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 06:10:23,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:10:23,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:23,663 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:10:23,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:24,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:24,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:24,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:24,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,535 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:24,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:24,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:24,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:24,538 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 06:10:24,558 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:24,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:25,890 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:10:25,891 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 06:10:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:27,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024788046] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:27,391 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:27,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 44 [2022-01-18 06:10:27,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023685568] [2022-01-18 06:10:27,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:27,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 06:10:27,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:27,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 06:10:27,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1678, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:10:27,392 INFO L87 Difference]: Start difference. First operand 5762 states and 13030 transitions. Second operand has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 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 06:10:29,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:29,602 INFO L93 Difference]: Finished difference Result 8582 states and 19068 transitions. [2022-01-18 06:10:29,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 06:10:29,603 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 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 39 [2022-01-18 06:10:29,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:29,616 INFO L225 Difference]: With dead ends: 8582 [2022-01-18 06:10:29,616 INFO L226 Difference]: Without dead ends: 8540 [2022-01-18 06:10:29,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2557 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1273, Invalid=7099, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 06:10:29,617 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 350 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:29,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 1383 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 947 Invalid, 0 Unknown, 303 Unchecked, 0.6s Time] [2022-01-18 06:10:29,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8540 states. [2022-01-18 06:10:29,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8540 to 6098. [2022-01-18 06:10:29,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6098 states, 6097 states have (on average 2.264556339183205) internal successors, (13807), 6097 states have internal predecessors, (13807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:29,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6098 states to 6098 states and 13807 transitions. [2022-01-18 06:10:29,712 INFO L78 Accepts]: Start accepts. Automaton has 6098 states and 13807 transitions. Word has length 39 [2022-01-18 06:10:29,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:29,713 INFO L470 AbstractCegarLoop]: Abstraction has 6098 states and 13807 transitions. [2022-01-18 06:10:29,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 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 06:10:29,713 INFO L276 IsEmpty]: Start isEmpty. Operand 6098 states and 13807 transitions. [2022-01-18 06:10:29,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:10:29,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:29,717 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:29,734 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 06:10:29,919 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 06:10:29,919 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:10:29,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:29,920 INFO L85 PathProgramCache]: Analyzing trace with hash 976122898, now seen corresponding path program 81 times [2022-01-18 06:10:29,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:29,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144041851] [2022-01-18 06:10:29,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:29,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:30,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:30,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144041851] [2022-01-18 06:10:30,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144041851] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:30,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000386648] [2022-01-18 06:10:30,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:10:30,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:30,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:30,242 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 06:10:30,243 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 06:10:30,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-01-18 06:10:30,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:30,269 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:10:30,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:31,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:31,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:31,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:31,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:31,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:31,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:31,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:31,133 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 06:10:31,153 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:31,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:32,446 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:10:32,447 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 06:10:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:34,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000386648] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:34,120 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:34,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 42 [2022-01-18 06:10:34,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990813403] [2022-01-18 06:10:34,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:34,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 06:10:34,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:34,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 06:10:34,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1498, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 06:10:34,121 INFO L87 Difference]: Start difference. First operand 6098 states and 13807 transitions. Second operand has 43 states, 43 states have (on average 2.3488372093023258) internal successors, (101), 42 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 06:10:36,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:36,150 INFO L93 Difference]: Finished difference Result 8931 states and 19767 transitions. [2022-01-18 06:10:36,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 06:10:36,150 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.3488372093023258) internal successors, (101), 42 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 39 [2022-01-18 06:10:36,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:36,162 INFO L225 Difference]: With dead ends: 8931 [2022-01-18 06:10:36,163 INFO L226 Difference]: Without dead ends: 8486 [2022-01-18 06:10:36,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=789, Invalid=4467, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 06:10:36,163 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 569 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:36,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 1626 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1603 Invalid, 0 Unknown, 173 Unchecked, 0.9s Time] [2022-01-18 06:10:36,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8486 states. [2022-01-18 06:10:36,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8486 to 6743. [2022-01-18 06:10:36,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6743 states, 6742 states have (on average 2.262681696825868) internal successors, (15255), 6742 states have internal predecessors, (15255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:36,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6743 states to 6743 states and 15255 transitions. [2022-01-18 06:10:36,277 INFO L78 Accepts]: Start accepts. Automaton has 6743 states and 15255 transitions. Word has length 39 [2022-01-18 06:10:36,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:36,277 INFO L470 AbstractCegarLoop]: Abstraction has 6743 states and 15255 transitions. [2022-01-18 06:10:36,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.3488372093023258) internal successors, (101), 42 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 06:10:36,277 INFO L276 IsEmpty]: Start isEmpty. Operand 6743 states and 15255 transitions. [2022-01-18 06:10:36,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:10:36,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:36,281 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:36,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-01-18 06:10:36,482 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 06:10:36,482 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:10:36,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:36,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2100683282, now seen corresponding path program 82 times [2022-01-18 06:10:36,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:36,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812720454] [2022-01-18 06:10:36,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:36,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:36,808 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:36,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:36,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812720454] [2022-01-18 06:10:36,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812720454] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:36,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202268985] [2022-01-18 06:10:36,809 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:10:36,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:36,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:36,811 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 06:10:36,812 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 06:10:36,835 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:10:36,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:36,836 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:10:36,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:37,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:37,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,663 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:37,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:37,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:37,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:37,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:37,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:37,680 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 06:10:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:37,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:39,020 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:10:39,020 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 06:10:40,334 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:40,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202268985] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:40,334 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:40,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 43 [2022-01-18 06:10:40,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883283410] [2022-01-18 06:10:40,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:40,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-18 06:10:40,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:40,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-18 06:10:40,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1587, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 06:10:40,335 INFO L87 Difference]: Start difference. First operand 6743 states and 15255 transitions. Second operand has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 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 06:10:42,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:42,528 INFO L93 Difference]: Finished difference Result 12342 states and 27425 transitions. [2022-01-18 06:10:42,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 06:10:42,529 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 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 39 [2022-01-18 06:10:42,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:42,543 INFO L225 Difference]: With dead ends: 12342 [2022-01-18 06:10:42,544 INFO L226 Difference]: Without dead ends: 12080 [2022-01-18 06:10:42,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1068, Invalid=6414, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 06:10:42,544 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 437 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 228 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:42,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1278 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1032 Invalid, 0 Unknown, 228 Unchecked, 0.6s Time] [2022-01-18 06:10:42,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12080 states. [2022-01-18 06:10:42,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12080 to 6527. [2022-01-18 06:10:42,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6527 states, 6526 states have (on average 2.265093472264787) internal successors, (14782), 6526 states have internal predecessors, (14782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:42,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6527 states to 6527 states and 14782 transitions. [2022-01-18 06:10:42,647 INFO L78 Accepts]: Start accepts. Automaton has 6527 states and 14782 transitions. Word has length 39 [2022-01-18 06:10:42,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:42,647 INFO L470 AbstractCegarLoop]: Abstraction has 6527 states and 14782 transitions. [2022-01-18 06:10:42,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 43 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 06:10:42,647 INFO L276 IsEmpty]: Start isEmpty. Operand 6527 states and 14782 transitions. [2022-01-18 06:10:42,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:10:42,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:42,651 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:42,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-01-18 06:10:42,851 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 06:10:42,851 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:10:42,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:42,851 INFO L85 PathProgramCache]: Analyzing trace with hash 471453714, now seen corresponding path program 83 times [2022-01-18 06:10:42,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:42,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080289958] [2022-01-18 06:10:42,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:42,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:43,210 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:43,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:43,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080289958] [2022-01-18 06:10:43,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080289958] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:43,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865220382] [2022-01-18 06:10:43,211 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:10:43,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:43,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:43,212 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 06:10:43,213 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 06:10:43,250 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-01-18 06:10:43,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:43,256 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 06:10:43,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:44,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:44,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:44,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:44,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,088 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:44,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:44,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:44,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:44,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:44,093 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 84 treesize of output 32 [2022-01-18 06:10:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:44,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:44,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:44,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:44,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:44,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:44,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:44,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:44,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:44,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:44,997 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:44,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:44,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:45,131 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:10:45,131 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 06:10:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:45,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865220382] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:45,759 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:45,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-01-18 06:10:45,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419880475] [2022-01-18 06:10:45,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:45,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-18 06:10:45,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:45,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-18 06:10:45,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=512, Invalid=1744, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 06:10:45,760 INFO L87 Difference]: Start difference. First operand 6527 states and 14782 transitions. Second operand has 48 states, 48 states have (on average 2.25) internal successors, (108), 47 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 06:10:51,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:51,215 INFO L93 Difference]: Finished difference Result 9781 states and 21718 transitions. [2022-01-18 06:10:51,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-18 06:10:51,216 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.25) internal successors, (108), 47 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 39 [2022-01-18 06:10:51,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:51,229 INFO L225 Difference]: With dead ends: 9781 [2022-01-18 06:10:51,229 INFO L226 Difference]: Without dead ends: 9498 [2022-01-18 06:10:51,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4107 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2153, Invalid=10729, Unknown=0, NotChecked=0, Total=12882 [2022-01-18 06:10:51,230 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 544 mSDsluCounter, 2064 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 274 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:51,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 1667 Invalid, 1744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1290 Invalid, 0 Unknown, 274 Unchecked, 0.9s Time] [2022-01-18 06:10:51,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9498 states. [2022-01-18 06:10:51,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9498 to 7128. [2022-01-18 06:10:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7128 states, 7127 states have (on average 2.267574014311772) internal successors, (16161), 7127 states have internal predecessors, (16161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7128 states to 7128 states and 16161 transitions. [2022-01-18 06:10:51,348 INFO L78 Accepts]: Start accepts. Automaton has 7128 states and 16161 transitions. Word has length 39 [2022-01-18 06:10:51,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:51,348 INFO L470 AbstractCegarLoop]: Abstraction has 7128 states and 16161 transitions. [2022-01-18 06:10:51,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.25) internal successors, (108), 47 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 06:10:51,349 INFO L276 IsEmpty]: Start isEmpty. Operand 7128 states and 16161 transitions. [2022-01-18 06:10:51,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:10:51,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:51,355 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:51,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-01-18 06:10:51,571 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 06:10:51,571 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:10:51,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:51,572 INFO L85 PathProgramCache]: Analyzing trace with hash 130470786, now seen corresponding path program 84 times [2022-01-18 06:10:51,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:51,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996896759] [2022-01-18 06:10:51,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:51,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:51,988 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:51,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:51,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996896759] [2022-01-18 06:10:51,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996896759] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:51,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704129541] [2022-01-18 06:10:51,989 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:10:51,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:51,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:51,992 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 06:10:51,993 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 06:10:52,023 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-01-18 06:10:52,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:52,024 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 06:10:52,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:52,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:52,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:52,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:52,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:52,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:52,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:52,916 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:52,917 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 124 treesize of output 44 [2022-01-18 06:10:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:52,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:54,256 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:10:54,257 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 06:10:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:55,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704129541] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:55,501 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:55,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 44 [2022-01-18 06:10:55,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244074330] [2022-01-18 06:10:55,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:55,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 06:10:55,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:55,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 06:10:55,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1668, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:10:55,502 INFO L87 Difference]: Start difference. First operand 7128 states and 16161 transitions. Second operand has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 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 06:10:57,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:57,296 INFO L93 Difference]: Finished difference Result 10175 states and 22746 transitions. [2022-01-18 06:10:57,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 06:10:57,297 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 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 39 [2022-01-18 06:10:57,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:57,313 INFO L225 Difference]: With dead ends: 10175 [2022-01-18 06:10:57,313 INFO L226 Difference]: Without dead ends: 10138 [2022-01-18 06:10:57,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1949 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=923, Invalid=6049, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 06:10:57,314 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 344 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 310 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:57,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 1392 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 973 Invalid, 0 Unknown, 310 Unchecked, 0.6s Time] [2022-01-18 06:10:57,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10138 states. [2022-01-18 06:10:57,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10138 to 7107. [2022-01-18 06:10:57,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7107 states, 7106 states have (on average 2.267098226850549) internal successors, (16110), 7106 states have internal predecessors, (16110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:57,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7107 states to 7107 states and 16110 transitions. [2022-01-18 06:10:57,424 INFO L78 Accepts]: Start accepts. Automaton has 7107 states and 16110 transitions. Word has length 39 [2022-01-18 06:10:57,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:57,424 INFO L470 AbstractCegarLoop]: Abstraction has 7107 states and 16110 transitions. [2022-01-18 06:10:57,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2444444444444445) internal successors, (101), 44 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 06:10:57,424 INFO L276 IsEmpty]: Start isEmpty. Operand 7107 states and 16110 transitions. [2022-01-18 06:10:57,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:10:57,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:57,428 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:57,445 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 06:10:57,629 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 06:10:57,629 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:10:57,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:57,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2088252302, now seen corresponding path program 85 times [2022-01-18 06:10:57,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:57,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298213194] [2022-01-18 06:10:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:57,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:58,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:58,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298213194] [2022-01-18 06:10:58,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298213194] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:58,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810890513] [2022-01-18 06:10:58,035 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:10:58,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:58,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:58,036 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 06:10:58,036 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 06:10:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:58,065 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:10:58,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:58,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:58,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,901 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:58,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:58,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:58,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:10:58,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:10:58,915 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 06:10:58,942 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:58,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:00,276 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:11:00,277 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 06:11:01,675 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:01,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810890513] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:01,675 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:01,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2022-01-18 06:11:01,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665637421] [2022-01-18 06:11:01,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:01,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-18 06:11:01,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:01,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-18 06:11:01,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1598, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 06:11:01,676 INFO L87 Difference]: Start difference. First operand 7107 states and 16110 transitions. Second operand has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 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 06:11:03,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:03,929 INFO L93 Difference]: Finished difference Result 13150 states and 29651 transitions. [2022-01-18 06:11:03,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 06:11:03,929 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 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 39 [2022-01-18 06:11:03,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:03,949 INFO L225 Difference]: With dead ends: 13150 [2022-01-18 06:11:03,950 INFO L226 Difference]: Without dead ends: 12710 [2022-01-18 06:11:03,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2264 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1268, Invalid=6388, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 06:11:03,951 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 472 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 374 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:03,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 1338 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1048 Invalid, 0 Unknown, 374 Unchecked, 0.6s Time] [2022-01-18 06:11:03,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12710 states. [2022-01-18 06:11:04,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12710 to 4841. [2022-01-18 06:11:04,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4841 states, 4840 states have (on average 2.2264462809917354) internal successors, (10776), 4840 states have internal predecessors, (10776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:04,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4841 states to 4841 states and 10776 transitions. [2022-01-18 06:11:04,064 INFO L78 Accepts]: Start accepts. Automaton has 4841 states and 10776 transitions. Word has length 39 [2022-01-18 06:11:04,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:04,064 INFO L470 AbstractCegarLoop]: Abstraction has 4841 states and 10776 transitions. [2022-01-18 06:11:04,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 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 06:11:04,065 INFO L276 IsEmpty]: Start isEmpty. Operand 4841 states and 10776 transitions. [2022-01-18 06:11:04,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:11:04,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:04,067 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:04,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-01-18 06:11:04,268 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 06:11:04,268 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:11:04,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:04,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1095423810, now seen corresponding path program 86 times [2022-01-18 06:11:04,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:04,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408528094] [2022-01-18 06:11:04,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:04,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:04,641 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:04,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:04,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408528094] [2022-01-18 06:11:04,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408528094] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:04,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087170819] [2022-01-18 06:11:04,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:11:04,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:04,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:04,642 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 06:11:04,696 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 06:11:04,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:11:04,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:04,720 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:11:04,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:05,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:05,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:05,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,552 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:05,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,557 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:05,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:05,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:05,561 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 06:11:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:05,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:06,964 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:11:06,964 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 06:11:08,264 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:08,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087170819] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:08,265 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:08,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2022-01-18 06:11:08,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196780078] [2022-01-18 06:11:08,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:08,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-18 06:11:08,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:08,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-18 06:11:08,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1593, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 06:11:08,266 INFO L87 Difference]: Start difference. First operand 4841 states and 10776 transitions. Second operand has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 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 06:11:11,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:11,641 INFO L93 Difference]: Finished difference Result 10258 states and 22574 transitions. [2022-01-18 06:11:11,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-18 06:11:11,641 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 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 39 [2022-01-18 06:11:11,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:11,654 INFO L225 Difference]: With dead ends: 10258 [2022-01-18 06:11:11,654 INFO L226 Difference]: Without dead ends: 10072 [2022-01-18 06:11:11,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3504 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1882, Invalid=9890, Unknown=0, NotChecked=0, Total=11772 [2022-01-18 06:11:11,655 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 440 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 2061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 621 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:11,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 1861 Invalid, 2061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1330 Invalid, 0 Unknown, 621 Unchecked, 0.8s Time] [2022-01-18 06:11:11,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10072 states. [2022-01-18 06:11:11,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10072 to 4872. [2022-01-18 06:11:11,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4872 states, 4871 states have (on average 2.2311640320262778) internal successors, (10868), 4871 states have internal predecessors, (10868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:11,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 10868 transitions. [2022-01-18 06:11:11,751 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 10868 transitions. Word has length 39 [2022-01-18 06:11:11,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:11,751 INFO L470 AbstractCegarLoop]: Abstraction has 4872 states and 10868 transitions. [2022-01-18 06:11:11,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 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 06:11:11,751 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 10868 transitions. [2022-01-18 06:11:11,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:11:11,755 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:11,755 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:11,772 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 06:11:11,955 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 06:11:11,955 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:11:11,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:11,956 INFO L85 PathProgramCache]: Analyzing trace with hash 754440882, now seen corresponding path program 87 times [2022-01-18 06:11:11,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:11,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730508808] [2022-01-18 06:11:11,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:11,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:12,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:12,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730508808] [2022-01-18 06:11:12,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730508808] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:12,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2740338] [2022-01-18 06:11:12,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:11:12,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:12,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:12,372 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 06:11:12,373 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 06:11:12,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-01-18 06:11:12,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:12,403 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:11:12,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:13,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:13,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:13,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,284 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:13,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:13,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:13,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:13,295 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 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 06:11:13,315 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:13,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:14,676 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:11:14,677 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 06:11:16,260 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:16,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2740338] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:16,261 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:16,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2022-01-18 06:11:16,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845865813] [2022-01-18 06:11:16,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:16,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-18 06:11:16,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:16,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-18 06:11:16,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1589, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 06:11:16,261 INFO L87 Difference]: Start difference. First operand 4872 states and 10868 transitions. Second operand has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 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 06:11:21,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:21,054 INFO L93 Difference]: Finished difference Result 8395 states and 18450 transitions. [2022-01-18 06:11:21,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-01-18 06:11:21,055 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 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 39 [2022-01-18 06:11:21,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:21,064 INFO L225 Difference]: With dead ends: 8395 [2022-01-18 06:11:21,065 INFO L226 Difference]: Without dead ends: 8352 [2022-01-18 06:11:21,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6258 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2905, Invalid=16555, Unknown=0, NotChecked=0, Total=19460 [2022-01-18 06:11:21,065 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 311 mSDsluCounter, 2964 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 3013 SdHoareTripleChecker+Invalid, 2473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 501 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:21,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 3013 Invalid, 2473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1890 Invalid, 0 Unknown, 501 Unchecked, 1.1s Time] [2022-01-18 06:11:21,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8352 states. [2022-01-18 06:11:21,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8352 to 5094. [2022-01-18 06:11:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 5093 states have (on average 2.234243078735519) internal successors, (11379), 5093 states have internal predecessors, (11379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:21,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 11379 transitions. [2022-01-18 06:11:21,158 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 11379 transitions. Word has length 39 [2022-01-18 06:11:21,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:21,158 INFO L470 AbstractCegarLoop]: Abstraction has 5094 states and 11379 transitions. [2022-01-18 06:11:21,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 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 06:11:21,158 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 11379 transitions. [2022-01-18 06:11:21,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:11:21,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:21,163 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:21,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-01-18 06:11:21,379 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 06:11:21,379 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:11:21,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:21,380 INFO L85 PathProgramCache]: Analyzing trace with hash -13136430, now seen corresponding path program 88 times [2022-01-18 06:11:21,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:21,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739241566] [2022-01-18 06:11:21,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:21,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:21,703 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:21,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:21,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739241566] [2022-01-18 06:11:21,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739241566] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:21,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911188023] [2022-01-18 06:11:21,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:11:21,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:21,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:21,704 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 06:11:21,705 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 06:11:21,727 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:11:21,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:21,728 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:11:21,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:22,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:22,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:22,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:22,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,515 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:22,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:22,517 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 06:11:22,536 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:22,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:23,847 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:11:23,847 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 06:11:25,928 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:25,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911188023] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:25,929 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:25,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 40 [2022-01-18 06:11:25,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437631303] [2022-01-18 06:11:25,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:25,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 06:11:25,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:25,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 06:11:25,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1354, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 06:11:25,930 INFO L87 Difference]: Start difference. First operand 5094 states and 11379 transitions. Second operand has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 40 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:28,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:28,465 INFO L93 Difference]: Finished difference Result 8478 states and 18545 transitions. [2022-01-18 06:11:28,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 06:11:28,465 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 40 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have 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 06:11:28,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:28,478 INFO L225 Difference]: With dead ends: 8478 [2022-01-18 06:11:28,478 INFO L226 Difference]: Without dead ends: 7975 [2022-01-18 06:11:28,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1536 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=814, Invalid=4588, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 06:11:28,479 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 562 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:28,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 1946 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1809 Invalid, 0 Unknown, 143 Unchecked, 1.0s Time] [2022-01-18 06:11:28,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7975 states. [2022-01-18 06:11:28,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7975 to 5874. [2022-01-18 06:11:28,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5874 states, 5873 states have (on average 2.239570917759237) internal successors, (13153), 5873 states have internal predecessors, (13153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:28,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5874 states to 5874 states and 13153 transitions. [2022-01-18 06:11:28,573 INFO L78 Accepts]: Start accepts. Automaton has 5874 states and 13153 transitions. Word has length 39 [2022-01-18 06:11:28,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:28,573 INFO L470 AbstractCegarLoop]: Abstraction has 5874 states and 13153 transitions. [2022-01-18 06:11:28,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 40 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:28,574 INFO L276 IsEmpty]: Start isEmpty. Operand 5874 states and 13153 transitions. [2022-01-18 06:11:28,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:11:28,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:28,578 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:28,595 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 06:11:28,778 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 06:11:28,779 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:11:28,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:28,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1892279486, now seen corresponding path program 89 times [2022-01-18 06:11:28,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:28,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526827887] [2022-01-18 06:11:28,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:28,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:29,131 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 06:11:29,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:29,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526827887] [2022-01-18 06:11:29,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526827887] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:29,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511310027] [2022-01-18 06:11:29,132 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:11:29,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:29,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:29,133 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 06:11:29,133 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 06:11:29,160 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-01-18 06:11:29,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:29,162 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 06:11:29,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:29,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:29,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:29,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,986 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:29,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,987 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:29,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:29,988 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 126 treesize of output 48 [2022-01-18 06:11:30,007 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:30,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:30,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,862 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,862 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,864 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,864 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:30,998 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:11:30,998 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 06:11:31,798 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:31,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511310027] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:31,798 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:31,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 42 [2022-01-18 06:11:31,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606591422] [2022-01-18 06:11:31,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:31,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 06:11:31,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:31,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 06:11:31,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=1373, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 06:11:31,799 INFO L87 Difference]: Start difference. First operand 5874 states and 13153 transitions. Second operand has 43 states, 43 states have (on average 2.186046511627907) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:35,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:35,970 INFO L93 Difference]: Finished difference Result 10878 states and 23605 transitions. [2022-01-18 06:11:35,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 06:11:35,971 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.186046511627907) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have 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 06:11:35,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:35,986 INFO L225 Difference]: With dead ends: 10878 [2022-01-18 06:11:35,986 INFO L226 Difference]: Without dead ends: 10238 [2022-01-18 06:11:35,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2353 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1557, Invalid=6453, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 06:11:35,987 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 658 mSDsluCounter, 2693 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 2101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 413 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:35,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 1866 Invalid, 2101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1522 Invalid, 0 Unknown, 413 Unchecked, 1.0s Time] [2022-01-18 06:11:35,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10238 states. [2022-01-18 06:11:36,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10238 to 6965. [2022-01-18 06:11:36,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6965 states, 6964 states have (on average 2.2501435956346927) internal successors, (15670), 6964 states have internal predecessors, (15670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:36,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6965 states to 6965 states and 15670 transitions. [2022-01-18 06:11:36,109 INFO L78 Accepts]: Start accepts. Automaton has 6965 states and 15670 transitions. Word has length 39 [2022-01-18 06:11:36,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:36,109 INFO L470 AbstractCegarLoop]: Abstraction has 6965 states and 15670 transitions. [2022-01-18 06:11:36,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.186046511627907) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:36,109 INFO L276 IsEmpty]: Start isEmpty. Operand 6965 states and 15670 transitions. [2022-01-18 06:11:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:11:36,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:36,114 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:36,130 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 06:11:36,314 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 06:11:36,314 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:11:36,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:36,314 INFO L85 PathProgramCache]: Analyzing trace with hash -517805614, now seen corresponding path program 90 times [2022-01-18 06:11:36,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:36,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189869893] [2022-01-18 06:11:36,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:36,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:36,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:36,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189869893] [2022-01-18 06:11:36,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189869893] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:36,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627362389] [2022-01-18 06:11:36,655 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:11:36,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:36,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:36,656 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 06:11:36,657 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 06:11:36,682 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-01-18 06:11:36,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:36,682 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:11:36,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:37,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:37,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:37,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:37,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:37,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:37,497 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 06:11:37,516 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:37,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:38,847 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:11:38,847 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 06:11:40,256 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:40,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627362389] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:40,256 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:40,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 42 [2022-01-18 06:11:40,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894565494] [2022-01-18 06:11:40,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:40,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 06:11:40,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:40,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 06:11:40,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1516, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 06:11:40,257 INFO L87 Difference]: Start difference. First operand 6965 states and 15670 transitions. Second operand has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:42,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:42,516 INFO L93 Difference]: Finished difference Result 12330 states and 27409 transitions. [2022-01-18 06:11:42,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 06:11:42,516 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have 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 06:11:42,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:42,534 INFO L225 Difference]: With dead ends: 12330 [2022-01-18 06:11:42,534 INFO L226 Difference]: Without dead ends: 11928 [2022-01-18 06:11:42,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2048 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1213, Invalid=5927, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 06:11:42,535 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 462 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 2191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 687 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:42,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 1795 Invalid, 2191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1417 Invalid, 0 Unknown, 687 Unchecked, 0.7s Time] [2022-01-18 06:11:42,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11928 states. [2022-01-18 06:11:42,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11928 to 6186. [2022-01-18 06:11:42,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6186 states, 6185 states have (on average 2.242198868229588) internal successors, (13868), 6185 states have internal predecessors, (13868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6186 states to 6186 states and 13868 transitions. [2022-01-18 06:11:42,638 INFO L78 Accepts]: Start accepts. Automaton has 6186 states and 13868 transitions. Word has length 39 [2022-01-18 06:11:42,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:42,638 INFO L470 AbstractCegarLoop]: Abstraction has 6186 states and 13868 transitions. [2022-01-18 06:11:42,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:42,638 INFO L276 IsEmpty]: Start isEmpty. Operand 6186 states and 13868 transitions. [2022-01-18 06:11:42,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:11:42,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:42,642 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:42,658 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 06:11:42,842 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 06:11:42,842 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:11:42,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:42,843 INFO L85 PathProgramCache]: Analyzing trace with hash -858788542, now seen corresponding path program 91 times [2022-01-18 06:11:42,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:42,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354886998] [2022-01-18 06:11:42,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:42,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:43,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:43,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354886998] [2022-01-18 06:11:43,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354886998] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:43,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560587382] [2022-01-18 06:11:43,226 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:11:43,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:43,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:43,227 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 06:11:43,228 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 06:11:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:43,251 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:11:43,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:44,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:44,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:44,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:44,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:44,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:44,058 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 06:11:44,086 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:44,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:45,432 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:11:45,433 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 06:11:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:46,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560587382] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:46,972 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:46,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 42 [2022-01-18 06:11:46,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855342782] [2022-01-18 06:11:46,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:46,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 06:11:46,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:46,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 06:11:46,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1513, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 06:11:46,973 INFO L87 Difference]: Start difference. First operand 6186 states and 13868 transitions. Second operand has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:48,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:48,779 INFO L93 Difference]: Finished difference Result 10931 states and 24305 transitions. [2022-01-18 06:11:48,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 06:11:48,780 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have 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 06:11:48,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:48,798 INFO L225 Difference]: With dead ends: 10931 [2022-01-18 06:11:48,798 INFO L226 Difference]: Without dead ends: 10874 [2022-01-18 06:11:48,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1566 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=930, Invalid=5076, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 06:11:48,799 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 317 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 433 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:48,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 1259 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 841 Invalid, 0 Unknown, 433 Unchecked, 0.5s Time] [2022-01-18 06:11:48,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10874 states. [2022-01-18 06:11:48,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10874 to 6523. [2022-01-18 06:11:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6523 states, 6522 states have (on average 2.242256976387611) internal successors, (14624), 6522 states have internal predecessors, (14624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:48,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6523 states to 6523 states and 14624 transitions. [2022-01-18 06:11:48,921 INFO L78 Accepts]: Start accepts. Automaton has 6523 states and 14624 transitions. Word has length 39 [2022-01-18 06:11:48,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:48,921 INFO L470 AbstractCegarLoop]: Abstraction has 6523 states and 14624 transitions. [2022-01-18 06:11:48,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:48,921 INFO L276 IsEmpty]: Start isEmpty. Operand 6523 states and 14624 transitions. [2022-01-18 06:11:48,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:11:48,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:48,925 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:48,941 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 06:11:49,125 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 06:11:49,126 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:11:49,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:49,127 INFO L85 PathProgramCache]: Analyzing trace with hash -798877582, now seen corresponding path program 92 times [2022-01-18 06:11:49,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:49,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377008869] [2022-01-18 06:11:49,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:49,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:49,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:49,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377008869] [2022-01-18 06:11:49,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377008869] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:49,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180504490] [2022-01-18 06:11:49,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:11:49,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:49,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:49,479 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 06:11:49,479 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 06:11:49,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:11:49,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:49,506 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:11:49,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:50,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:50,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:50,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:50,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:50,274 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 06:11:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:50,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:51,598 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:11:51,599 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 06:11:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:52,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180504490] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:52,655 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:52,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 06:11:52,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568732838] [2022-01-18 06:11:52,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:52,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 06:11:52,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:52,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 06:11:52,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1440, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 06:11:52,656 INFO L87 Difference]: Start difference. First operand 6523 states and 14624 transitions. Second operand has 42 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 41 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 06:11:55,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:55,241 INFO L93 Difference]: Finished difference Result 12412 states and 27599 transitions. [2022-01-18 06:11:55,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 06:11:55,241 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 41 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 39 [2022-01-18 06:11:55,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:55,258 INFO L225 Difference]: With dead ends: 12412 [2022-01-18 06:11:55,258 INFO L226 Difference]: Without dead ends: 12365 [2022-01-18 06:11:55,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2862 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1588, Invalid=8312, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 06:11:55,259 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 339 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 355 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:55,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 1447 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 943 Invalid, 0 Unknown, 355 Unchecked, 0.6s Time] [2022-01-18 06:11:55,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12365 states. [2022-01-18 06:11:55,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12365 to 7081. [2022-01-18 06:11:55,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7081 states, 7080 states have (on average 2.239689265536723) internal successors, (15857), 7080 states have internal predecessors, (15857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:55,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7081 states to 7081 states and 15857 transitions. [2022-01-18 06:11:55,384 INFO L78 Accepts]: Start accepts. Automaton has 7081 states and 15857 transitions. Word has length 39 [2022-01-18 06:11:55,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:55,384 INFO L470 AbstractCegarLoop]: Abstraction has 7081 states and 15857 transitions. [2022-01-18 06:11:55,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 41 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 06:11:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 7081 states and 15857 transitions. [2022-01-18 06:11:55,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:11:55,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:55,389 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:55,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-01-18 06:11:55,589 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 06:11:55,589 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:11:55,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:55,590 INFO L85 PathProgramCache]: Analyzing trace with hash -691098734, now seen corresponding path program 93 times [2022-01-18 06:11:55,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:55,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252244957] [2022-01-18 06:11:55,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:55,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:55,906 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:55,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:55,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252244957] [2022-01-18 06:11:55,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252244957] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:55,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573194003] [2022-01-18 06:11:55,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:11:55,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:55,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:55,907 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 06:11:55,908 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 06:11:55,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-01-18 06:11:55,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:55,933 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:11:55,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:56,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:56,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,640 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:11:56,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:11:56,651 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 06:11:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:56,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:58,001 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:11:58,001 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 06:11:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:59,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573194003] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:59,427 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:59,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 38 [2022-01-18 06:11:59,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651355923] [2022-01-18 06:11:59,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:59,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 06:11:59,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:59,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 06:11:59,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1229, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 06:11:59,427 INFO L87 Difference]: Start difference. First operand 7081 states and 15857 transitions. Second operand has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:01,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:12:01,211 INFO L93 Difference]: Finished difference Result 11193 states and 24627 transitions. [2022-01-18 06:12:01,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 06:12:01,211 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have 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 06:12:01,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:12:01,226 INFO L225 Difference]: With dead ends: 11193 [2022-01-18 06:12:01,227 INFO L226 Difference]: Without dead ends: 10775 [2022-01-18 06:12:01,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=642, Invalid=3264, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 06:12:01,227 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 620 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 06:12:01,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 1382 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1271 Invalid, 0 Unknown, 108 Unchecked, 0.7s Time] [2022-01-18 06:12:01,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10775 states. [2022-01-18 06:12:01,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10775 to 7552. [2022-01-18 06:12:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7552 states, 7551 states have (on average 2.243543901470004) internal successors, (16941), 7551 states have internal predecessors, (16941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:01,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7552 states to 7552 states and 16941 transitions. [2022-01-18 06:12:01,345 INFO L78 Accepts]: Start accepts. Automaton has 7552 states and 16941 transitions. Word has length 39 [2022-01-18 06:12:01,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:12:01,345 INFO L470 AbstractCegarLoop]: Abstraction has 7552 states and 16941 transitions. [2022-01-18 06:12:01,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:01,345 INFO L276 IsEmpty]: Start isEmpty. Operand 7552 states and 16941 transitions. [2022-01-18 06:12:01,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:12:01,350 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:12:01,350 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:12:01,366 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 06:12:01,550 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 06:12:01,551 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:12:01,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:12:01,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1216638574, now seen corresponding path program 94 times [2022-01-18 06:12:01,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:12:01,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893518586] [2022-01-18 06:12:01,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:12:01,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:12:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:01,906 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:01,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:12:01,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893518586] [2022-01-18 06:12:01,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893518586] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:12:01,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603563106] [2022-01-18 06:12:01,906 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:12:01,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:01,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:12:01,908 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 06:12:01,908 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 06:12:01,932 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:12:01,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:12:01,933 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:12:01,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:02,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:02,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:02,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:02,680 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 06:12:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:02,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:04,010 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:12:04,010 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 06:12:05,552 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:05,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603563106] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:05,553 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:05,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 38 [2022-01-18 06:12:05,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596664956] [2022-01-18 06:12:05,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:05,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 06:12:05,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:05,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 06:12:05,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1232, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 06:12:05,554 INFO L87 Difference]: Start difference. First operand 7552 states and 16941 transitions. Second operand has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:07,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:12:07,627 INFO L93 Difference]: Finished difference Result 12346 states and 27336 transitions. [2022-01-18 06:12:07,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 06:12:07,627 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have 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 06:12:07,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:12:07,649 INFO L225 Difference]: With dead ends: 12346 [2022-01-18 06:12:07,649 INFO L226 Difference]: Without dead ends: 11712 [2022-01-18 06:12:07,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 48 SyntacticMatches, 8 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1261 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=757, Invalid=3935, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 06:12:07,650 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 611 mSDsluCounter, 2131 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:12:07,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 1545 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1466 Invalid, 0 Unknown, 96 Unchecked, 0.8s Time] [2022-01-18 06:12:07,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11712 states. [2022-01-18 06:12:07,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11712 to 7834. [2022-01-18 06:12:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7834 states, 7833 states have (on average 2.248563768671007) internal successors, (17613), 7833 states have internal predecessors, (17613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:07,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7834 states to 7834 states and 17613 transitions. [2022-01-18 06:12:07,853 INFO L78 Accepts]: Start accepts. Automaton has 7834 states and 17613 transitions. Word has length 39 [2022-01-18 06:12:07,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:12:07,853 INFO L470 AbstractCegarLoop]: Abstraction has 7834 states and 17613 transitions. [2022-01-18 06:12:07,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:07,854 INFO L276 IsEmpty]: Start isEmpty. Operand 7834 states and 17613 transitions. [2022-01-18 06:12:07,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:12:07,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:12:07,860 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:12:07,884 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 06:12:08,075 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 06:12:08,075 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:12:08,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:12:08,076 INFO L85 PathProgramCache]: Analyzing trace with hash 545716114, now seen corresponding path program 95 times [2022-01-18 06:12:08,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:12:08,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530939286] [2022-01-18 06:12:08,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:12:08,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:12:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:08,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:12:08,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530939286] [2022-01-18 06:12:08,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530939286] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:12:08,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082415767] [2022-01-18 06:12:08,435 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:12:08,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:08,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:12:08,436 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 06:12:08,436 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 06:12:08,464 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-01-18 06:12:08,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:12:08,465 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:12:08,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:09,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:09,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:09,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:09,230 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 126 treesize of output 48 [2022-01-18 06:12:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:09,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:10,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,050 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:10,152 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:12:10,152 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 06:12:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:10,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082415767] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:10,868 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:10,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 39 [2022-01-18 06:12:10,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956992250] [2022-01-18 06:12:10,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:10,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 06:12:10,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:10,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 06:12:10,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 06:12:10,869 INFO L87 Difference]: Start difference. First operand 7834 states and 17613 transitions. Second operand has 40 states, 40 states have (on average 2.25) internal successors, (90), 39 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:13,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:12:13,684 INFO L93 Difference]: Finished difference Result 14263 states and 31520 transitions. [2022-01-18 06:12:13,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 06:12:13,685 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.25) internal successors, (90), 39 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have 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 06:12:13,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:12:13,718 INFO L225 Difference]: With dead ends: 14263 [2022-01-18 06:12:13,719 INFO L226 Difference]: Without dead ends: 13773 [2022-01-18 06:12:13,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 48 SyntacticMatches, 7 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1533 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1093, Invalid=4163, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 06:12:13,720 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 721 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:12:13,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [721 Valid, 1290 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1231 Invalid, 0 Unknown, 114 Unchecked, 0.8s Time] [2022-01-18 06:12:13,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13773 states. [2022-01-18 06:12:13,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13773 to 9478. [2022-01-18 06:12:13,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9478 states, 9477 states have (on average 2.245858394006542) internal successors, (21284), 9477 states have internal predecessors, (21284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:13,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9478 states to 9478 states and 21284 transitions. [2022-01-18 06:12:13,903 INFO L78 Accepts]: Start accepts. Automaton has 9478 states and 21284 transitions. Word has length 39 [2022-01-18 06:12:13,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:12:13,903 INFO L470 AbstractCegarLoop]: Abstraction has 9478 states and 21284 transitions. [2022-01-18 06:12:13,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.25) internal successors, (90), 39 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:13,903 INFO L276 IsEmpty]: Start isEmpty. Operand 9478 states and 21284 transitions. [2022-01-18 06:12:13,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:12:13,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:12:13,909 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:12:13,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-01-18 06:12:14,110 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 06:12:14,110 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:12:14,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:12:14,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1835060478, now seen corresponding path program 96 times [2022-01-18 06:12:14,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:12:14,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691981071] [2022-01-18 06:12:14,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:12:14,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:12:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:14,486 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:14,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:12:14,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691981071] [2022-01-18 06:12:14,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691981071] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:12:14,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112279445] [2022-01-18 06:12:14,486 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:12:14,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:14,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:12:14,492 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 06:12:14,493 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 06:12:14,522 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-01-18 06:12:14,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:12:14,523 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 06:12:14,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:15,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:15,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:15,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:15,317 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 124 treesize of output 44 [2022-01-18 06:12:15,336 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:15,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:16,632 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:12:16,632 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 06:12:17,882 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:17,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112279445] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:17,882 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:17,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 38 [2022-01-18 06:12:17,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106774487] [2022-01-18 06:12:17,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:17,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 06:12:17,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:17,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 06:12:17,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1228, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 06:12:17,907 INFO L87 Difference]: Start difference. First operand 9478 states and 21284 transitions. Second operand has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:20,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:12:20,336 INFO L93 Difference]: Finished difference Result 16669 states and 37110 transitions. [2022-01-18 06:12:20,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 06:12:20,336 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have 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 06:12:20,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:12:20,371 INFO L225 Difference]: With dead ends: 16669 [2022-01-18 06:12:20,372 INFO L226 Difference]: Without dead ends: 16504 [2022-01-18 06:12:20,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1984 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1098, Invalid=5874, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 06:12:20,373 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 434 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 06:12:20,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 1553 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1289 Invalid, 0 Unknown, 144 Unchecked, 0.7s Time] [2022-01-18 06:12:20,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16504 states. [2022-01-18 06:12:20,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16504 to 9914. [2022-01-18 06:12:20,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9914 states, 9913 states have (on average 2.255321295268839) internal successors, (22357), 9913 states have internal predecessors, (22357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:20,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9914 states to 9914 states and 22357 transitions. [2022-01-18 06:12:20,558 INFO L78 Accepts]: Start accepts. Automaton has 9914 states and 22357 transitions. Word has length 39 [2022-01-18 06:12:20,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:12:20,558 INFO L470 AbstractCegarLoop]: Abstraction has 9914 states and 22357 transitions. [2022-01-18 06:12:20,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 38 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:20,558 INFO L276 IsEmpty]: Start isEmpty. Operand 9914 states and 22357 transitions. [2022-01-18 06:12:20,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:12:20,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:12:20,563 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:12:20,579 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 06:12:20,763 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 06:12:20,763 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:12:20,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:12:20,764 INFO L85 PathProgramCache]: Analyzing trace with hash -299935998, now seen corresponding path program 97 times [2022-01-18 06:12:20,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:12:20,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185285542] [2022-01-18 06:12:20,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:12:20,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:12:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:21,130 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:21,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:12:21,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185285542] [2022-01-18 06:12:21,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185285542] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:12:21,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651679983] [2022-01-18 06:12:21,131 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:12:21,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:21,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:12:21,132 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 06:12:21,132 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 06:12:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:21,155 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:12:21,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:21,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:21,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:21,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:21,892 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 06:12:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:21,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:23,206 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:12:23,206 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 06:12:24,622 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:24,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651679983] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:24,623 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:24,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 40 [2022-01-18 06:12:24,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77728199] [2022-01-18 06:12:24,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:24,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 06:12:24,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:24,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 06:12:24,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1371, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 06:12:24,623 INFO L87 Difference]: Start difference. First operand 9914 states and 22357 transitions. Second operand has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 40 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:26,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:12:26,849 INFO L93 Difference]: Finished difference Result 14690 states and 32820 transitions. [2022-01-18 06:12:26,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 06:12:26,849 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 40 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have 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 06:12:26,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:12:26,878 INFO L225 Difference]: With dead ends: 14690 [2022-01-18 06:12:26,879 INFO L226 Difference]: Without dead ends: 14626 [2022-01-18 06:12:26,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2180 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1205, Invalid=6627, Unknown=0, NotChecked=0, Total=7832 [2022-01-18 06:12:26,879 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 357 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 1770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 625 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:12:26,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 1647 Invalid, 1770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1068 Invalid, 0 Unknown, 625 Unchecked, 0.6s Time] [2022-01-18 06:12:26,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14626 states. [2022-01-18 06:12:27,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14626 to 10106. [2022-01-18 06:12:27,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10106 states, 10105 states have (on average 2.25531914893617) internal successors, (22790), 10105 states have internal predecessors, (22790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:27,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10106 states to 10106 states and 22790 transitions. [2022-01-18 06:12:27,084 INFO L78 Accepts]: Start accepts. Automaton has 10106 states and 22790 transitions. Word has length 39 [2022-01-18 06:12:27,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:12:27,084 INFO L470 AbstractCegarLoop]: Abstraction has 10106 states and 22790 transitions. [2022-01-18 06:12:27,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 40 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:27,085 INFO L276 IsEmpty]: Start isEmpty. Operand 10106 states and 22790 transitions. [2022-01-18 06:12:27,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:12:27,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:12:27,090 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:12:27,106 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 06:12:27,290 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 06:12:27,290 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:12:27,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:12:27,291 INFO L85 PathProgramCache]: Analyzing trace with hash 455427778, now seen corresponding path program 98 times [2022-01-18 06:12:27,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:12:27,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733368115] [2022-01-18 06:12:27,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:12:27,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:12:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:27,644 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:27,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:12:27,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733368115] [2022-01-18 06:12:27,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733368115] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:12:27,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743151201] [2022-01-18 06:12:27,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:12:27,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:27,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:12:27,645 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 06:12:27,646 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 06:12:27,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:12:27,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:12:27,671 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:12:27,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:28,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,366 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:28,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:28,367 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:12:28,386 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:28,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:29,677 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:12:29,678 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 06:12:31,462 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:31,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743151201] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:31,463 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:31,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 37 [2022-01-18 06:12:31,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602297167] [2022-01-18 06:12:31,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:31,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 06:12:31,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:31,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 06:12:31,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1156, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 06:12:31,464 INFO L87 Difference]: Start difference. First operand 10106 states and 22790 transitions. Second operand has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:33,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:12:33,324 INFO L93 Difference]: Finished difference Result 12375 states and 27512 transitions. [2022-01-18 06:12:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 06:12:33,324 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have 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 06:12:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:12:33,340 INFO L225 Difference]: With dead ends: 12375 [2022-01-18 06:12:33,340 INFO L226 Difference]: Without dead ends: 12019 [2022-01-18 06:12:33,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 57 SyntacticMatches, 8 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=607, Invalid=3053, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 06:12:33,341 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 472 mSDsluCounter, 2586 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:12:33,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 1826 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1788 Invalid, 0 Unknown, 158 Unchecked, 0.9s Time] [2022-01-18 06:12:33,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12019 states. [2022-01-18 06:12:33,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12019 to 10587. [2022-01-18 06:12:33,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10587 states, 10586 states have (on average 2.2577933119214055) internal successors, (23901), 10586 states have internal predecessors, (23901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:33,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10587 states to 10587 states and 23901 transitions. [2022-01-18 06:12:33,474 INFO L78 Accepts]: Start accepts. Automaton has 10587 states and 23901 transitions. Word has length 39 [2022-01-18 06:12:33,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:12:33,474 INFO L470 AbstractCegarLoop]: Abstraction has 10587 states and 23901 transitions. [2022-01-18 06:12:33,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:33,474 INFO L276 IsEmpty]: Start isEmpty. Operand 10587 states and 23901 transitions. [2022-01-18 06:12:33,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:12:33,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:12:33,479 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:12:33,494 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 06:12:33,679 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 06:12:33,680 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:12:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:12:33,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1925348814, now seen corresponding path program 99 times [2022-01-18 06:12:33,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:12:33,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015887375] [2022-01-18 06:12:33,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:12:33,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:12:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:34,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:12:34,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015887375] [2022-01-18 06:12:34,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015887375] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:12:34,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968292181] [2022-01-18 06:12:34,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:12:34,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:34,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:12:34,013 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 06:12:34,014 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 06:12:34,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-01-18 06:12:34,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:12:34,039 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:12:34,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:34,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:34,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:34,770 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:12:34,789 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:34,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:36,056 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:12:36,057 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 06:12:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:37,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968292181] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:37,495 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:37,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 37 [2022-01-18 06:12:37,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022118719] [2022-01-18 06:12:37,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:37,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 06:12:37,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:37,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 06:12:37,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1166, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 06:12:37,496 INFO L87 Difference]: Start difference. First operand 10587 states and 23901 transitions. Second operand has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:39,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:12:39,101 INFO L93 Difference]: Finished difference Result 14773 states and 32922 transitions. [2022-01-18 06:12:39,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 06:12:39,101 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have 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 06:12:39,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:12:39,126 INFO L225 Difference]: With dead ends: 14773 [2022-01-18 06:12:39,127 INFO L226 Difference]: Without dead ends: 14606 [2022-01-18 06:12:39,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 49 SyntacticMatches, 8 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=652, Invalid=3508, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 06:12:39,127 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 365 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 250 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:12:39,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 1267 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1080 Invalid, 0 Unknown, 250 Unchecked, 0.6s Time] [2022-01-18 06:12:39,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14606 states. [2022-01-18 06:12:39,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14606 to 10494. [2022-01-18 06:12:39,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10494 states, 10493 states have (on average 2.2559801772610313) internal successors, (23672), 10493 states have internal predecessors, (23672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10494 states to 10494 states and 23672 transitions. [2022-01-18 06:12:39,312 INFO L78 Accepts]: Start accepts. Automaton has 10494 states and 23672 transitions. Word has length 39 [2022-01-18 06:12:39,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:12:39,312 INFO L470 AbstractCegarLoop]: Abstraction has 10494 states and 23672 transitions. [2022-01-18 06:12:39,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.263157894736842) internal successors, (86), 37 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:39,312 INFO L276 IsEmpty]: Start isEmpty. Operand 10494 states and 23672 transitions. [2022-01-18 06:12:39,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:12:39,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:12:39,317 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:12:39,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-01-18 06:12:39,518 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 06:12:39,518 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:12:39,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:12:39,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1423715278, now seen corresponding path program 100 times [2022-01-18 06:12:39,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:12:39,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669279711] [2022-01-18 06:12:39,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:12:39,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:12:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:39,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:12:39,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669279711] [2022-01-18 06:12:39,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669279711] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:12:39,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684116070] [2022-01-18 06:12:39,902 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:12:39,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:39,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:12:39,903 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 06:12:39,903 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 06:12:39,926 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:12:39,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:12:39,928 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:12:39,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:40,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:40,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:40,690 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:12:40,716 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:40,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:42,021 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:12:42,021 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 06:12:43,512 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:43,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684116070] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:43,513 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:43,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 38 [2022-01-18 06:12:43,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655393621] [2022-01-18 06:12:43,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:43,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 06:12:43,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:43,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 06:12:43,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1231, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 06:12:43,513 INFO L87 Difference]: Start difference. First operand 10494 states and 23672 transitions. Second operand has 39 states, 39 states have (on average 2.2051282051282053) internal successors, (86), 38 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:45,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:12:45,635 INFO L93 Difference]: Finished difference Result 15142 states and 33727 transitions. [2022-01-18 06:12:45,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-18 06:12:45,635 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.2051282051282053) internal successors, (86), 38 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have 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 06:12:45,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:12:45,656 INFO L225 Difference]: With dead ends: 15142 [2022-01-18 06:12:45,656 INFO L226 Difference]: Without dead ends: 14997 [2022-01-18 06:12:45,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 50 SyntacticMatches, 7 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1678 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1041, Invalid=5601, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 06:12:45,657 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 361 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 393 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:12:45,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 1574 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1124 Invalid, 0 Unknown, 393 Unchecked, 0.6s Time] [2022-01-18 06:12:45,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14997 states. [2022-01-18 06:12:45,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14997 to 10777. [2022-01-18 06:12:45,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10777 states, 10776 states have (on average 2.2592798812175205) internal successors, (24346), 10776 states have internal predecessors, (24346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10777 states to 10777 states and 24346 transitions. [2022-01-18 06:12:45,840 INFO L78 Accepts]: Start accepts. Automaton has 10777 states and 24346 transitions. Word has length 39 [2022-01-18 06:12:45,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:12:45,841 INFO L470 AbstractCegarLoop]: Abstraction has 10777 states and 24346 transitions. [2022-01-18 06:12:45,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.2051282051282053) internal successors, (86), 38 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:45,841 INFO L276 IsEmpty]: Start isEmpty. Operand 10777 states and 24346 transitions. [2022-01-18 06:12:45,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:12:45,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:12:45,846 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:12:45,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-01-18 06:12:46,046 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 06:12:46,047 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:12:46,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:12:46,048 INFO L85 PathProgramCache]: Analyzing trace with hash -390224334, now seen corresponding path program 101 times [2022-01-18 06:12:46,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:12:46,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924018980] [2022-01-18 06:12:46,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:12:46,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:12:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:46,458 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:46,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:12:46,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924018980] [2022-01-18 06:12:46,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924018980] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:12:46,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416587859] [2022-01-18 06:12:46,458 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:12:46,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:46,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:12:46,459 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 06:12:46,460 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 06:12:46,484 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-01-18 06:12:46,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:12:46,485 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 06:12:46,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:47,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:47,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:47,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:47,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,321 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:47,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:47,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:47,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:12:47,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:47,328 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 89 treesize of output 37 [2022-01-18 06:12:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:47,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:48,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:12:48,707 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:12:48,707 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 06:12:49,352 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:49,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416587859] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:49,352 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:49,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-01-18 06:12:49,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241049381] [2022-01-18 06:12:49,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:49,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-18 06:12:49,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:49,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-18 06:12:49,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=1806, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 06:12:49,353 INFO L87 Difference]: Start difference. First operand 10777 states and 24346 transitions. Second operand has 48 states, 48 states have (on average 2.25) internal successors, (108), 47 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 06:13:00,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:00,215 INFO L93 Difference]: Finished difference Result 16482 states and 36607 transitions. [2022-01-18 06:13:00,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-01-18 06:13:00,215 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.25) internal successors, (108), 47 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 39 [2022-01-18 06:13:00,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:00,239 INFO L225 Difference]: With dead ends: 16482 [2022-01-18 06:13:00,239 INFO L226 Difference]: Without dead ends: 15997 [2022-01-18 06:13:00,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 52 SyntacticMatches, 7 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7667 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=3760, Invalid=21680, Unknown=0, NotChecked=0, Total=25440 [2022-01-18 06:13:00,241 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 711 mSDsluCounter, 2607 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 2476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 696 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:00,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 2064 Invalid, 2476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1474 Invalid, 0 Unknown, 696 Unchecked, 1.3s Time] [2022-01-18 06:13:00,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15997 states. [2022-01-18 06:13:00,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15997 to 11355. [2022-01-18 06:13:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11355 states, 11354 states have (on average 2.2595561035758323) internal successors, (25655), 11354 states have internal predecessors, (25655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:00,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11355 states to 11355 states and 25655 transitions. [2022-01-18 06:13:00,426 INFO L78 Accepts]: Start accepts. Automaton has 11355 states and 25655 transitions. Word has length 39 [2022-01-18 06:13:00,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:00,426 INFO L470 AbstractCegarLoop]: Abstraction has 11355 states and 25655 transitions. [2022-01-18 06:13:00,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.25) internal successors, (108), 47 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 06:13:00,427 INFO L276 IsEmpty]: Start isEmpty. Operand 11355 states and 25655 transitions. [2022-01-18 06:13:00,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-18 06:13:00,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:00,432 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:00,448 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 06:13:00,633 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 06:13:00,633 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:13:00,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:00,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1924206786, now seen corresponding path program 102 times [2022-01-18 06:13:00,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:00,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114538945] [2022-01-18 06:13:00,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:00,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:01,059 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:01,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:01,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114538945] [2022-01-18 06:13:01,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114538945] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:01,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855330440] [2022-01-18 06:13:01,060 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:13:01,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:01,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:01,061 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 06:13:01,061 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 06:13:01,087 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-01-18 06:13:01,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:01,088 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 06:13:01,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:01,772 INFO L353 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2022-01-18 06:13:01,772 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:13:01,791 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:01,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:03,085 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:13:03,085 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 06:13:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:03,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855330440] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:03,943 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:03,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 06:13:03,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733893390] [2022-01-18 06:13:03,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:03,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 06:13:03,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:03,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 06:13:03,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1241, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 06:13:03,944 INFO L87 Difference]: Start difference. First operand 11355 states and 25655 transitions. Second operand has 39 states, 39 states have (on average 2.128205128205128) internal successors, (83), 38 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 06:13:06,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:06,291 INFO L93 Difference]: Finished difference Result 16614 states and 37194 transitions. [2022-01-18 06:13:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 06:13:06,291 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.128205128205128) internal successors, (83), 38 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 39 [2022-01-18 06:13:06,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:06,317 INFO L225 Difference]: With dead ends: 16614 [2022-01-18 06:13:06,318 INFO L226 Difference]: Without dead ends: 16544 [2022-01-18 06:13:06,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 48 SyntacticMatches, 8 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1024, Invalid=5456, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 06:13:06,318 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 264 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 1585 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 1658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:06,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 1776 Invalid, 1658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1585 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 06:13:06,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16544 states. [2022-01-18 06:13:06,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16544 to 11299. [2022-01-18 06:13:06,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11299 states, 11298 states have (on average 2.2590724021950788) internal successors, (25523), 11298 states have internal predecessors, (25523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11299 states to 11299 states and 25523 transitions. [2022-01-18 06:13:06,520 INFO L78 Accepts]: Start accepts. Automaton has 11299 states and 25523 transitions. Word has length 39 [2022-01-18 06:13:06,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:06,520 INFO L470 AbstractCegarLoop]: Abstraction has 11299 states and 25523 transitions. [2022-01-18 06:13:06,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.128205128205128) internal successors, (83), 38 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 06:13:06,520 INFO L276 IsEmpty]: Start isEmpty. Operand 11299 states and 25523 transitions. [2022-01-18 06:13:06,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-18 06:13:06,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:06,527 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:06,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-01-18 06:13:06,727 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 06:13:06,728 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:13:06,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:06,728 INFO L85 PathProgramCache]: Analyzing trace with hash -648973305, now seen corresponding path program 103 times [2022-01-18 06:13:06,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:06,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711896653] [2022-01-18 06:13:06,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:06,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 49 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:06,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:06,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711896653] [2022-01-18 06:13:06,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711896653] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:06,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058828771] [2022-01-18 06:13:06,801 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:13:06,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:06,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:06,804 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:13:06,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-01-18 06:13:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:06,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 06:13:06,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:06,922 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 49 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:06,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 49 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:06,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058828771] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:06,995 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:06,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 10 [2022-01-18 06:13:06,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75980600] [2022-01-18 06:13:06,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:06,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 06:13:06,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:06,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 06:13:06,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-01-18 06:13:06,996 INFO L87 Difference]: Start difference. First operand 11299 states and 25523 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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 06:13:07,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:07,081 INFO L93 Difference]: Finished difference Result 14676 states and 33572 transitions. [2022-01-18 06:13:07,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 06:13:07,082 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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 40 [2022-01-18 06:13:07,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:07,106 INFO L225 Difference]: With dead ends: 14676 [2022-01-18 06:13:07,106 INFO L226 Difference]: Without dead ends: 14668 [2022-01-18 06:13:07,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-01-18 06:13:07,107 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 107 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:07,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 100 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:13:07,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14668 states. [2022-01-18 06:13:07,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14668 to 13931. [2022-01-18 06:13:07,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13931 states, 13930 states have (on average 2.294974874371859) internal successors, (31969), 13930 states have internal predecessors, (31969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:07,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13931 states to 13931 states and 31969 transitions. [2022-01-18 06:13:07,325 INFO L78 Accepts]: Start accepts. Automaton has 13931 states and 31969 transitions. Word has length 40 [2022-01-18 06:13:07,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:07,326 INFO L470 AbstractCegarLoop]: Abstraction has 13931 states and 31969 transitions. [2022-01-18 06:13:07,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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 06:13:07,326 INFO L276 IsEmpty]: Start isEmpty. Operand 13931 states and 31969 transitions. [2022-01-18 06:13:07,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 06:13:07,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:07,372 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:07,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-01-18 06:13:07,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2022-01-18 06:13:07,572 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:13:07,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:07,573 INFO L85 PathProgramCache]: Analyzing trace with hash -719883969, now seen corresponding path program 104 times [2022-01-18 06:13:07,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:07,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019949282] [2022-01-18 06:13:07,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:07,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:07,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:07,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019949282] [2022-01-18 06:13:07,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019949282] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:07,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344729013] [2022-01-18 06:13:07,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:13:07,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:07,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:07,909 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:13:07,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-01-18 06:13:07,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:13:07,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:07,933 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:13:07,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:08,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,730 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:08,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:08,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:08,747 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 06:13:08,767 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:08,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:10,116 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:13:10,116 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 06:13:11,445 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 11 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:11,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344729013] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:11,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:11,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 39 [2022-01-18 06:13:11,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075805688] [2022-01-18 06:13:11,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:11,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 06:13:11,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:11,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 06:13:11,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1300, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 06:13:11,446 INFO L87 Difference]: Start difference. First operand 13931 states and 31969 transitions. Second operand has 40 states, 40 states have (on average 2.45) internal successors, (98), 39 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 06:13:13,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:13,416 INFO L93 Difference]: Finished difference Result 23001 states and 52556 transitions. [2022-01-18 06:13:13,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 06:13:13,416 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.45) internal successors, (98), 39 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 42 [2022-01-18 06:13:13,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:13,457 INFO L225 Difference]: With dead ends: 23001 [2022-01-18 06:13:13,457 INFO L226 Difference]: Without dead ends: 22724 [2022-01-18 06:13:13,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1346 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=808, Invalid=4594, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 06:13:13,458 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 326 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 387 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:13,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 1537 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1236 Invalid, 0 Unknown, 387 Unchecked, 0.6s Time] [2022-01-18 06:13:13,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22724 states. [2022-01-18 06:13:13,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22724 to 14127. [2022-01-18 06:13:13,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14127 states, 14126 states have (on average 2.288404360753221) internal successors, (32326), 14126 states have internal predecessors, (32326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:13,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14127 states to 14127 states and 32326 transitions. [2022-01-18 06:13:13,817 INFO L78 Accepts]: Start accepts. Automaton has 14127 states and 32326 transitions. Word has length 42 [2022-01-18 06:13:13,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:13,817 INFO L470 AbstractCegarLoop]: Abstraction has 14127 states and 32326 transitions. [2022-01-18 06:13:13,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.45) internal successors, (98), 39 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 06:13:13,817 INFO L276 IsEmpty]: Start isEmpty. Operand 14127 states and 32326 transitions. [2022-01-18 06:13:13,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 06:13:13,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:13,827 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:13,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-01-18 06:13:14,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:14,028 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:13:14,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:14,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1921076959, now seen corresponding path program 105 times [2022-01-18 06:13:14,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:14,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790050273] [2022-01-18 06:13:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:14,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:14,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:14,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790050273] [2022-01-18 06:13:14,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790050273] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:14,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730899822] [2022-01-18 06:13:14,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:13:14,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:14,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:14,395 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:13:14,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-01-18 06:13:14,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-01-18 06:13:14,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:14,420 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:13:14,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:15,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:15,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:15,232 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:13:15,251 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:15,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:16,574 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:13:16,574 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 06:13:18,182 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:18,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730899822] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:18,182 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:18,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2022-01-18 06:13:18,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498871599] [2022-01-18 06:13:18,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:18,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 06:13:18,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:18,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 06:13:18,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1305, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 06:13:18,183 INFO L87 Difference]: Start difference. First operand 14127 states and 32326 transitions. Second operand has 40 states, 40 states have (on average 2.375) internal successors, (95), 39 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:18,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:18,775 INFO L93 Difference]: Finished difference Result 14637 states and 33389 transitions. [2022-01-18 06:13:18,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 06:13:18,776 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.375) internal successors, (95), 39 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-18 06:13:18,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:18,799 INFO L225 Difference]: With dead ends: 14637 [2022-01-18 06:13:18,799 INFO L226 Difference]: Without dead ends: 14630 [2022-01-18 06:13:18,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 56 SyntacticMatches, 7 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=389, Invalid=2161, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 06:13:18,799 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 151 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:18,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 1327 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 294 Invalid, 0 Unknown, 217 Unchecked, 0.2s Time] [2022-01-18 06:13:18,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14630 states. [2022-01-18 06:13:18,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14630 to 14248. [2022-01-18 06:13:18,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14248 states, 14247 states have (on average 2.2910788236119886) internal successors, (32641), 14247 states have internal predecessors, (32641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14248 states to 14248 states and 32641 transitions. [2022-01-18 06:13:19,023 INFO L78 Accepts]: Start accepts. Automaton has 14248 states and 32641 transitions. Word has length 42 [2022-01-18 06:13:19,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:19,023 INFO L470 AbstractCegarLoop]: Abstraction has 14248 states and 32641 transitions. [2022-01-18 06:13:19,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.375) internal successors, (95), 39 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 14248 states and 32641 transitions. [2022-01-18 06:13:19,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-18 06:13:19,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:19,032 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:19,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-01-18 06:13:19,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:19,232 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:13:19,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:19,232 INFO L85 PathProgramCache]: Analyzing trace with hash -913918449, now seen corresponding path program 106 times [2022-01-18 06:13:19,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:19,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57949172] [2022-01-18 06:13:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:19,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:19,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:19,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57949172] [2022-01-18 06:13:19,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57949172] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:19,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320047520] [2022-01-18 06:13:19,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:13:19,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:19,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:19,694 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:13:19,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-01-18 06:13:19,718 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:13:19,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:19,718 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 06:13:19,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:20,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:20,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:20,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-01-18 06:13:20,535 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:20,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:21,864 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-01-18 06:13:21,864 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 06:13:23,073 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 14 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:23,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320047520] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:23,073 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:23,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2022-01-18 06:13:23,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882355718] [2022-01-18 06:13:23,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:23,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 06:13:23,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:23,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 06:13:23,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1305, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 06:13:23,074 INFO L87 Difference]: Start difference. First operand 14248 states and 32641 transitions. Second operand has 40 states, 40 states have (on average 2.375) internal successors, (95), 39 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:25,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:25,969 INFO L93 Difference]: Finished difference Result 20753 states and 46931 transitions. [2022-01-18 06:13:25,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-18 06:13:25,969 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.375) internal successors, (95), 39 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-18 06:13:25,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:26,001 INFO L225 Difference]: With dead ends: 20753 [2022-01-18 06:13:26,001 INFO L226 Difference]: Without dead ends: 20651 [2022-01-18 06:13:26,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2811 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1536, Invalid=8564, Unknown=0, NotChecked=0, Total=10100 [2022-01-18 06:13:26,002 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 327 mSDsluCounter, 2161 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 2116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 815 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:26,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 2053 Invalid, 2116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1223 Invalid, 0 Unknown, 815 Unchecked, 0.7s Time] [2022-01-18 06:13:26,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20651 states. [2022-01-18 06:13:26,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20651 to 14230. [2022-01-18 06:13:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14230 states, 14229 states have (on average 2.2911659287370862) internal successors, (32601), 14229 states have internal predecessors, (32601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:26,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14230 states to 14230 states and 32601 transitions. [2022-01-18 06:13:26,266 INFO L78 Accepts]: Start accepts. Automaton has 14230 states and 32601 transitions. Word has length 42 [2022-01-18 06:13:26,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:26,266 INFO L470 AbstractCegarLoop]: Abstraction has 14230 states and 32601 transitions. [2022-01-18 06:13:26,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.375) internal successors, (95), 39 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:26,266 INFO L276 IsEmpty]: Start isEmpty. Operand 14230 states and 32601 transitions. [2022-01-18 06:13:26,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-18 06:13:26,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:26,275 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:26,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-01-18 06:13:26,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:26,475 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:13:26,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:26,475 INFO L85 PathProgramCache]: Analyzing trace with hash -621581526, now seen corresponding path program 107 times [2022-01-18 06:13:26,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:26,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174775234] [2022-01-18 06:13:26,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:26,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:26,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:26,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174775234] [2022-01-18 06:13:26,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174775234] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:26,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962259004] [2022-01-18 06:13:26,926 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:13:26,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:26,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:26,928 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:13:26,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-01-18 06:13:26,953 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 06:13:26,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:26,954 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-18 06:13:26,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:28,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:28,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:28,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:28,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,041 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:28,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:28,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,054 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:28,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:28,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:28,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:28,059 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 28 disjoint index pairs (out of 120 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 36 [2022-01-18 06:13:28,099 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:28,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:29,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,724 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,724 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,730 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,730 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:29,875 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 06:13:29,876 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 84 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 148 treesize of output 472 [2022-01-18 06:13:31,420 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:31,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962259004] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:31,421 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:31,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 52 [2022-01-18 06:13:31,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514718990] [2022-01-18 06:13:31,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:31,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-18 06:13:31,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:31,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-18 06:13:31,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=516, Invalid=2240, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 06:13:31,422 INFO L87 Difference]: Start difference. First operand 14230 states and 32601 transitions. Second operand has 53 states, 53 states have (on average 2.2641509433962264) internal successors, (120), 52 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 06:13:42,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:42,494 INFO L93 Difference]: Finished difference Result 29284 states and 66268 transitions. [2022-01-18 06:13:42,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-18 06:13:42,494 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.2641509433962264) internal successors, (120), 52 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 43 [2022-01-18 06:13:42,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:42,540 INFO L225 Difference]: With dead ends: 29284 [2022-01-18 06:13:42,540 INFO L226 Difference]: Without dead ends: 28769 [2022-01-18 06:13:42,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 51 SyntacticMatches, 10 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7596 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=3281, Invalid=21841, Unknown=0, NotChecked=0, Total=25122 [2022-01-18 06:13:42,542 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 718 mSDsluCounter, 3796 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 3235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 781 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:42,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 2962 Invalid, 3235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2262 Invalid, 0 Unknown, 781 Unchecked, 1.5s Time] [2022-01-18 06:13:42,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28769 states. [2022-01-18 06:13:42,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28769 to 15815. [2022-01-18 06:13:42,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15815 states, 15814 states have (on average 2.2893006197040595) internal successors, (36203), 15814 states have internal predecessors, (36203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:42,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15815 states to 15815 states and 36203 transitions. [2022-01-18 06:13:42,883 INFO L78 Accepts]: Start accepts. Automaton has 15815 states and 36203 transitions. Word has length 43 [2022-01-18 06:13:42,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:42,883 INFO L470 AbstractCegarLoop]: Abstraction has 15815 states and 36203 transitions. [2022-01-18 06:13:42,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.2641509433962264) internal successors, (120), 52 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 06:13:42,883 INFO L276 IsEmpty]: Start isEmpty. Operand 15815 states and 36203 transitions. [2022-01-18 06:13:42,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-18 06:13:42,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:42,891 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:42,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-01-18 06:13:43,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-01-18 06:13:43,092 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:13:43,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:43,092 INFO L85 PathProgramCache]: Analyzing trace with hash 838390362, now seen corresponding path program 108 times [2022-01-18 06:13:43,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:43,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766124584] [2022-01-18 06:13:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:43,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:43,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:43,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766124584] [2022-01-18 06:13:43,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766124584] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:43,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760166810] [2022-01-18 06:13:43,471 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:13:43,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:43,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:43,472 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:13:43,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-01-18 06:13:43,498 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 06:13:43,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:43,499 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-01-18 06:13:43,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:44,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:44,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:44,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:44,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:44,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:44,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:44,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:44,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:44,602 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-01-18 06:13:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:44,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:46,525 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-01-18 06:13:46,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-01-18 06:13:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:48,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760166810] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:48,837 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:48,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 49 [2022-01-18 06:13:48,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692452546] [2022-01-18 06:13:48,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:48,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-18 06:13:48,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:48,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-18 06:13:48,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=2090, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 06:13:48,838 INFO L87 Difference]: Start difference. First operand 15815 states and 36203 transitions. Second operand has 50 states, 50 states have (on average 2.26) internal successors, (113), 49 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 06:13:54,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:54,026 INFO L93 Difference]: Finished difference Result 31127 states and 70286 transitions. [2022-01-18 06:13:54,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-18 06:13:54,026 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 49 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 43 [2022-01-18 06:13:54,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:54,081 INFO L225 Difference]: With dead ends: 31127 [2022-01-18 06:13:54,081 INFO L226 Difference]: Without dead ends: 31059 [2022-01-18 06:13:54,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7121 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2862, Invalid=18018, Unknown=0, NotChecked=0, Total=20880 [2022-01-18 06:13:54,083 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 386 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 317 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:54,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 2789 Invalid, 2368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1948 Invalid, 0 Unknown, 317 Unchecked, 1.2s Time] [2022-01-18 06:13:54,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31059 states. [2022-01-18 06:13:54,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31059 to 15572. [2022-01-18 06:13:54,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15572 states, 15571 states have (on average 2.2897694431956843) internal successors, (35654), 15571 states have internal predecessors, (35654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:54,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15572 states to 15572 states and 35654 transitions. [2022-01-18 06:13:54,436 INFO L78 Accepts]: Start accepts. Automaton has 15572 states and 35654 transitions. Word has length 43 [2022-01-18 06:13:54,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:54,436 INFO L470 AbstractCegarLoop]: Abstraction has 15572 states and 35654 transitions. [2022-01-18 06:13:54,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 49 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 06:13:54,436 INFO L276 IsEmpty]: Start isEmpty. Operand 15572 states and 35654 transitions. [2022-01-18 06:13:54,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-18 06:13:54,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:54,445 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:54,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-01-18 06:13:54,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-01-18 06:13:54,646 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:13:54,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:54,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1774399994, now seen corresponding path program 109 times [2022-01-18 06:13:54,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:54,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168718577] [2022-01-18 06:13:54,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:54,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:55,077 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:55,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:55,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168718577] [2022-01-18 06:13:55,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168718577] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:55,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888279809] [2022-01-18 06:13:55,077 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:13:55,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:55,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:55,078 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:13:55,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-01-18 06:13:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:55,105 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-01-18 06:13:55,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:56,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:56,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:56,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:56,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:56,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:56,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:56,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:13:56,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:13:56,189 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-01-18 06:13:56,208 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:56,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:58,089 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-01-18 06:13:58,090 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-01-18 06:14:01,207 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:01,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888279809] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:14:01,207 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:14:01,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 50 [2022-01-18 06:14:01,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872633750] [2022-01-18 06:14:01,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:14:01,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-18 06:14:01,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:14:01,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-18 06:14:01,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=2181, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 06:14:01,208 INFO L87 Difference]: Start difference. First operand 15572 states and 35654 transitions. Second operand has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 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 06:14:03,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:14:03,709 INFO L93 Difference]: Finished difference Result 29929 states and 68119 transitions. [2022-01-18 06:14:03,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-18 06:14:03,710 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 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 43 [2022-01-18 06:14:03,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:14:03,755 INFO L225 Difference]: With dead ends: 29929 [2022-01-18 06:14:03,755 INFO L226 Difference]: Without dead ends: 29517 [2022-01-18 06:14:03,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2509 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1350, Invalid=7206, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 06:14:03,756 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 633 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 355 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:14:03,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 1585 Invalid, 1717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1206 Invalid, 0 Unknown, 355 Unchecked, 0.8s Time] [2022-01-18 06:14:03,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29517 states. [2022-01-18 06:14:03,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29517 to 13451. [2022-01-18 06:14:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13451 states, 13450 states have (on average 2.275910780669145) internal successors, (30611), 13450 states have internal predecessors, (30611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:04,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13451 states to 13451 states and 30611 transitions. [2022-01-18 06:14:04,027 INFO L78 Accepts]: Start accepts. Automaton has 13451 states and 30611 transitions. Word has length 43 [2022-01-18 06:14:04,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:14:04,027 INFO L470 AbstractCegarLoop]: Abstraction has 13451 states and 30611 transitions. [2022-01-18 06:14:04,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 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 06:14:04,027 INFO L276 IsEmpty]: Start isEmpty. Operand 13451 states and 30611 transitions. [2022-01-18 06:14:04,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-18 06:14:04,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:14:04,035 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:14:04,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-01-18 06:14:04,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-01-18 06:14:04,235 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:14:04,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:14:04,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1060595414, now seen corresponding path program 110 times [2022-01-18 06:14:04,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:14:04,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221052284] [2022-01-18 06:14:04,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:14:04,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:14:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:04,619 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:04,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:14:04,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221052284] [2022-01-18 06:14:04,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221052284] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:14:04,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082884197] [2022-01-18 06:14:04,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:14:04,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:04,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:14:04,620 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:14:04,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-01-18 06:14:04,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:14:04,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:14:04,644 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-01-18 06:14:04,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:14:05,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:05,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:05,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:05,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:05,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,738 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:05,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:05,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:05,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:05,744 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-01-18 06:14:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:05,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:14:07,677 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-01-18 06:14:07,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-01-18 06:14:10,682 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 9 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:10,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082884197] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:14:10,682 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:14:10,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 50 [2022-01-18 06:14:10,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521582745] [2022-01-18 06:14:10,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:14:10,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-18 06:14:10,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:14:10,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-18 06:14:10,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=2182, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 06:14:10,683 INFO L87 Difference]: Start difference. First operand 13451 states and 30611 transitions. Second operand has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 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 06:14:14,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:14:14,280 INFO L93 Difference]: Finished difference Result 25886 states and 58270 transitions. [2022-01-18 06:14:14,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-18 06:14:14,281 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 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 43 [2022-01-18 06:14:14,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:14:14,326 INFO L225 Difference]: With dead ends: 25886 [2022-01-18 06:14:14,326 INFO L226 Difference]: Without dead ends: 25833 [2022-01-18 06:14:14,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4190 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1899, Invalid=11441, Unknown=0, NotChecked=0, Total=13340 [2022-01-18 06:14:14,327 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 464 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 440 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 06:14:14,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1915 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1210 Invalid, 0 Unknown, 440 Unchecked, 0.7s Time] [2022-01-18 06:14:14,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25833 states. [2022-01-18 06:14:14,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25833 to 12734. [2022-01-18 06:14:14,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12734 states, 12733 states have (on average 2.2737768004398022) internal successors, (28952), 12733 states have internal predecessors, (28952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:14,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12734 states to 12734 states and 28952 transitions. [2022-01-18 06:14:14,592 INFO L78 Accepts]: Start accepts. Automaton has 12734 states and 28952 transitions. Word has length 43 [2022-01-18 06:14:14,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:14:14,592 INFO L470 AbstractCegarLoop]: Abstraction has 12734 states and 28952 transitions. [2022-01-18 06:14:14,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 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 06:14:14,592 INFO L276 IsEmpty]: Start isEmpty. Operand 12734 states and 28952 transitions. [2022-01-18 06:14:14,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-18 06:14:14,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:14:14,599 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:14:14,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-01-18 06:14:14,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2022-01-18 06:14:14,800 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:14:14,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:14:14,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1973677926, now seen corresponding path program 111 times [2022-01-18 06:14:14,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:14:14,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809200525] [2022-01-18 06:14:14,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:14:14,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:14:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:15,189 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:15,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:14:15,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809200525] [2022-01-18 06:14:15,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809200525] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:14:15,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449683352] [2022-01-18 06:14:15,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:14:15,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:15,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:14:15,190 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:14:15,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-01-18 06:14:15,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-01-18 06:14:15,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:14:15,215 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-01-18 06:14:15,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:14:16,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:16,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:16,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:16,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:16,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:16,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:16,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:16,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:16,352 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-01-18 06:14:16,372 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:16,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:14:18,290 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-01-18 06:14:18,291 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-01-18 06:14:20,542 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 9 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:20,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449683352] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:14:20,542 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:14:20,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 50 [2022-01-18 06:14:20,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756607484] [2022-01-18 06:14:20,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:14:20,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-18 06:14:20,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:14:20,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-18 06:14:20,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=2178, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 06:14:20,543 INFO L87 Difference]: Start difference. First operand 12734 states and 28952 transitions. Second operand has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 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 06:14:22,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:14:22,999 INFO L93 Difference]: Finished difference Result 18676 states and 41880 transitions. [2022-01-18 06:14:22,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 06:14:23,000 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 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 43 [2022-01-18 06:14:23,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:14:23,028 INFO L225 Difference]: With dead ends: 18676 [2022-01-18 06:14:23,028 INFO L226 Difference]: Without dead ends: 18639 [2022-01-18 06:14:23,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2731 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1309, Invalid=8003, Unknown=0, NotChecked=0, Total=9312 [2022-01-18 06:14:23,029 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 370 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 363 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:14:23,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 1615 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 965 Invalid, 0 Unknown, 363 Unchecked, 0.6s Time] [2022-01-18 06:14:23,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18639 states. [2022-01-18 06:14:23,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18639 to 13208. [2022-01-18 06:14:23,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13208 states, 13207 states have (on average 2.2704626334519573) internal successors, (29986), 13207 states have internal predecessors, (29986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:23,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13208 states to 13208 states and 29986 transitions. [2022-01-18 06:14:23,299 INFO L78 Accepts]: Start accepts. Automaton has 13208 states and 29986 transitions. Word has length 43 [2022-01-18 06:14:23,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:14:23,299 INFO L470 AbstractCegarLoop]: Abstraction has 13208 states and 29986 transitions. [2022-01-18 06:14:23,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 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 06:14:23,299 INFO L276 IsEmpty]: Start isEmpty. Operand 13208 states and 29986 transitions. [2022-01-18 06:14:23,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-18 06:14:23,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:14:23,307 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:14:23,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-01-18 06:14:23,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:23,508 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:14:23,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:14:23,509 INFO L85 PathProgramCache]: Analyzing trace with hash -268972998, now seen corresponding path program 112 times [2022-01-18 06:14:23,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:14:23,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036016666] [2022-01-18 06:14:23,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:14:23,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:14:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:23,899 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 06:14:23,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:14:23,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036016666] [2022-01-18 06:14:23,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036016666] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:14:23,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498624226] [2022-01-18 06:14:23,899 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:14:23,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:23,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:14:23,900 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:14:23,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-01-18 06:14:23,924 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:14:23,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:14:23,925 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-01-18 06:14:23,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:14:24,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,971 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:24,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:24,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,987 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:24,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:24,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:24,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:24,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:24,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:24,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-01-18 06:14:25,018 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 3 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:25,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:14:26,885 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-01-18 06:14:26,886 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-01-18 06:14:28,148 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:28,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498624226] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:14:28,148 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:14:28,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 49 [2022-01-18 06:14:28,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488650418] [2022-01-18 06:14:28,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:14:28,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-18 06:14:28,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:14:28,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-18 06:14:28,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=2081, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 06:14:28,149 INFO L87 Difference]: Start difference. First operand 13208 states and 29986 transitions. Second operand has 50 states, 50 states have (on average 2.22) internal successors, (111), 49 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 06:14:32,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:14:32,894 INFO L93 Difference]: Finished difference Result 21857 states and 48830 transitions. [2022-01-18 06:14:32,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-18 06:14:32,894 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 49 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 43 [2022-01-18 06:14:32,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:14:32,924 INFO L225 Difference]: With dead ends: 21857 [2022-01-18 06:14:32,924 INFO L226 Difference]: Without dead ends: 20821 [2022-01-18 06:14:32,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5466 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2203, Invalid=14309, Unknown=0, NotChecked=0, Total=16512 [2022-01-18 06:14:32,925 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 639 mSDsluCounter, 3513 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 2259 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 668 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:14:32,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 2259 Invalid, 2941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2130 Invalid, 0 Unknown, 668 Unchecked, 1.3s Time] [2022-01-18 06:14:32,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20821 states. [2022-01-18 06:14:33,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20821 to 13850. [2022-01-18 06:14:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13850 states, 13849 states have (on average 2.274243627698751) internal successors, (31496), 13849 states have internal predecessors, (31496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:33,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13850 states to 13850 states and 31496 transitions. [2022-01-18 06:14:33,150 INFO L78 Accepts]: Start accepts. Automaton has 13850 states and 31496 transitions. Word has length 43 [2022-01-18 06:14:33,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:14:33,150 INFO L470 AbstractCegarLoop]: Abstraction has 13850 states and 31496 transitions. [2022-01-18 06:14:33,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 49 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 06:14:33,150 INFO L276 IsEmpty]: Start isEmpty. Operand 13850 states and 31496 transitions. [2022-01-18 06:14:33,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-18 06:14:33,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:14:33,158 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:14:33,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-01-18 06:14:33,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:33,359 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:14:33,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:14:33,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1190998890, now seen corresponding path program 113 times [2022-01-18 06:14:33,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:14:33,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866743346] [2022-01-18 06:14:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:14:33,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:14:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:33,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:14:33,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866743346] [2022-01-18 06:14:33,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866743346] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:14:33,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774618324] [2022-01-18 06:14:33,846 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:14:33,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:33,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:14:33,847 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:14:33,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-01-18 06:14:33,871 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-01-18 06:14:33,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:14:33,872 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-01-18 06:14:33,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:14:34,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,924 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:34,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,937 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:34,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:34,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:34,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:34,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:34,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:34,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:34,955 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-01-18 06:14:34,974 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:34,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:14:36,873 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-01-18 06:14:36,874 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-01-18 06:14:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:39,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774618324] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:14:39,233 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:14:39,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 50 [2022-01-18 06:14:39,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379331610] [2022-01-18 06:14:39,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:14:39,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-18 06:14:39,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:14:39,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-18 06:14:39,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=2176, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 06:14:39,234 INFO L87 Difference]: Start difference. First operand 13850 states and 31496 transitions. Second operand has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 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 06:14:39,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:14:39,953 INFO L93 Difference]: Finished difference Result 14553 states and 32950 transitions. [2022-01-18 06:14:39,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 06:14:39,953 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 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 43 [2022-01-18 06:14:39,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:14:39,973 INFO L225 Difference]: With dead ends: 14553 [2022-01-18 06:14:39,974 INFO L226 Difference]: Without dead ends: 14540 [2022-01-18 06:14:39,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=537, Invalid=3245, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 06:14:39,974 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 184 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 246 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:14:39,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 1639 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 296 Invalid, 0 Unknown, 246 Unchecked, 0.2s Time] [2022-01-18 06:14:39,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14540 states. [2022-01-18 06:14:40,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14540 to 14057. [2022-01-18 06:14:40,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14057 states, 14056 states have (on average 2.2771770062606715) internal successors, (32008), 14056 states have internal predecessors, (32008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:40,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14057 states to 14057 states and 32008 transitions. [2022-01-18 06:14:40,159 INFO L78 Accepts]: Start accepts. Automaton has 14057 states and 32008 transitions. Word has length 43 [2022-01-18 06:14:40,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:14:40,159 INFO L470 AbstractCegarLoop]: Abstraction has 14057 states and 32008 transitions. [2022-01-18 06:14:40,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 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 06:14:40,159 INFO L276 IsEmpty]: Start isEmpty. Operand 14057 states and 32008 transitions. [2022-01-18 06:14:40,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-18 06:14:40,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:14:40,167 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:14:40,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-01-18 06:14:40,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2022-01-18 06:14:40,368 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:14:40,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:14:40,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1138183082, now seen corresponding path program 114 times [2022-01-18 06:14:40,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:14:40,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618135598] [2022-01-18 06:14:40,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:14:40,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:14:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 06:14:40,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:14:40,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618135598] [2022-01-18 06:14:40,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618135598] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:14:40,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439014474] [2022-01-18 06:14:40,788 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:14:40,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:40,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:14:40,789 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:14:40,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-01-18 06:14:40,819 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-01-18 06:14:40,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:14:40,820 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-01-18 06:14:40,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:14:41,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:41,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:41,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:41,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:41,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,901 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:41,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:41,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:41,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:41,907 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-01-18 06:14:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 4 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:41,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:14:43,815 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-01-18 06:14:43,816 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-01-18 06:14:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:49,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439014474] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:14:49,326 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:14:49,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 19] total 46 [2022-01-18 06:14:49,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093357570] [2022-01-18 06:14:49,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:14:49,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 06:14:49,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:14:49,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 06:14:49,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1795, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 06:14:49,327 INFO L87 Difference]: Start difference. First operand 14057 states and 32008 transitions. Second operand has 47 states, 47 states have (on average 2.3404255319148937) internal successors, (110), 46 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 06:14:51,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:14:51,575 INFO L93 Difference]: Finished difference Result 16995 states and 38199 transitions. [2022-01-18 06:14:51,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 06:14:51,575 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.3404255319148937) internal successors, (110), 46 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 43 [2022-01-18 06:14:51,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:14:51,601 INFO L225 Difference]: With dead ends: 16995 [2022-01-18 06:14:51,602 INFO L226 Difference]: Without dead ends: 16595 [2022-01-18 06:14:51,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1390 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=775, Invalid=4055, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 06:14:51,602 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 497 mSDsluCounter, 2654 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 194 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:14:51,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 1877 Invalid, 2180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1869 Invalid, 0 Unknown, 194 Unchecked, 1.0s Time] [2022-01-18 06:14:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16595 states. [2022-01-18 06:14:51,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16595 to 14528. [2022-01-18 06:14:51,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14528 states, 14527 states have (on average 2.278928891030495) internal successors, (33106), 14527 states have internal predecessors, (33106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14528 states to 14528 states and 33106 transitions. [2022-01-18 06:14:51,833 INFO L78 Accepts]: Start accepts. Automaton has 14528 states and 33106 transitions. Word has length 43 [2022-01-18 06:14:51,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:14:51,833 INFO L470 AbstractCegarLoop]: Abstraction has 14528 states and 33106 transitions. [2022-01-18 06:14:51,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.3404255319148937) internal successors, (110), 46 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 06:14:51,833 INFO L276 IsEmpty]: Start isEmpty. Operand 14528 states and 33106 transitions. [2022-01-18 06:14:51,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-18 06:14:51,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:14:51,842 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:14:51,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-01-18 06:14:52,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:52,042 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:14:52,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:14:52,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1232090406, now seen corresponding path program 115 times [2022-01-18 06:14:52,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:14:52,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577329074] [2022-01-18 06:14:52,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:14:52,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:14:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:52,401 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:52,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:14:52,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577329074] [2022-01-18 06:14:52,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577329074] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:14:52,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273856341] [2022-01-18 06:14:52,402 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:14:52,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:52,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:14:52,403 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:14:52,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-01-18 06:14:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:52,430 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-01-18 06:14:52,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:14:53,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:53,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,550 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:53,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,556 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:53,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:53,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:53,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:53,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:14:53,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:14:53,571 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-01-18 06:14:53,590 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:53,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:14:55,473 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-01-18 06:14:55,474 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-01-18 06:14:58,562 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:58,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273856341] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:14:58,562 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:14:58,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 19] total 47 [2022-01-18 06:14:58,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141621366] [2022-01-18 06:14:58,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:14:58,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-18 06:14:58,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:14:58,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-18 06:14:58,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=1887, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 06:14:58,563 INFO L87 Difference]: Start difference. First operand 14528 states and 33106 transitions. Second operand has 48 states, 48 states have (on average 2.3541666666666665) internal successors, (113), 47 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 06:15:00,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:15:00,638 INFO L93 Difference]: Finished difference Result 18318 states and 41228 transitions. [2022-01-18 06:15:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 06:15:00,638 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.3541666666666665) internal successors, (113), 47 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 43 [2022-01-18 06:15:00,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:15:00,666 INFO L225 Difference]: With dead ends: 18318 [2022-01-18 06:15:00,666 INFO L226 Difference]: Without dead ends: 18225 [2022-01-18 06:15:00,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=843, Invalid=4857, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 06:15:00,667 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 376 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:15:00,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 1540 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1344 Invalid, 0 Unknown, 121 Unchecked, 0.8s Time] [2022-01-18 06:15:00,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18225 states. [2022-01-18 06:15:00,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18225 to 14432. [2022-01-18 06:15:00,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14432 states, 14431 states have (on average 2.2783590880742843) internal successors, (32879), 14431 states have internal predecessors, (32879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:00,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14432 states to 14432 states and 32879 transitions. [2022-01-18 06:15:00,906 INFO L78 Accepts]: Start accepts. Automaton has 14432 states and 32879 transitions. Word has length 43 [2022-01-18 06:15:00,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:15:00,906 INFO L470 AbstractCegarLoop]: Abstraction has 14432 states and 32879 transitions. [2022-01-18 06:15:00,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.3541666666666665) internal successors, (113), 47 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 06:15:00,907 INFO L276 IsEmpty]: Start isEmpty. Operand 14432 states and 32879 transitions. [2022-01-18 06:15:00,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-18 06:15:00,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:15:00,915 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:15:00,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-01-18 06:15:01,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:15:01,119 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:15:01,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:15:01,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1098687706, now seen corresponding path program 116 times [2022-01-18 06:15:01,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:15:01,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620221403] [2022-01-18 06:15:01,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:15:01,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:15:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:15:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:01,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:15:01,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620221403] [2022-01-18 06:15:01,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620221403] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:15:01,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465178549] [2022-01-18 06:15:01,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:15:01,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:15:01,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:15:01,581 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:15:01,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-01-18 06:15:01,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:15:01,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:15:01,606 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-01-18 06:15:01,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:15:02,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:02,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:02,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:02,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:02,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:02,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:02,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:02,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:02,761 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-01-18 06:15:02,780 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:02,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:15:04,669 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-01-18 06:15:04,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-01-18 06:15:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:07,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465178549] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:15:07,057 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:15:07,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 49 [2022-01-18 06:15:07,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982776991] [2022-01-18 06:15:07,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:15:07,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-18 06:15:07,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:15:07,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-18 06:15:07,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2068, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 06:15:07,058 INFO L87 Difference]: Start difference. First operand 14432 states and 32879 transitions. Second operand has 50 states, 50 states have (on average 2.26) internal successors, (113), 49 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 06:15:10,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:15:10,432 INFO L93 Difference]: Finished difference Result 21972 states and 49366 transitions. [2022-01-18 06:15:10,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 06:15:10,432 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 49 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 43 [2022-01-18 06:15:10,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:15:10,467 INFO L225 Difference]: With dead ends: 21972 [2022-01-18 06:15:10,467 INFO L226 Difference]: Without dead ends: 21836 [2022-01-18 06:15:10,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2976 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1570, Invalid=8530, Unknown=0, NotChecked=0, Total=10100 [2022-01-18 06:15:10,468 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 348 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 2252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 315 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:15:10,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 2513 Invalid, 2252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1823 Invalid, 0 Unknown, 315 Unchecked, 1.1s Time] [2022-01-18 06:15:10,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21836 states. [2022-01-18 06:15:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21836 to 14330. [2022-01-18 06:15:10,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14330 states, 14329 states have (on average 2.2783167003977947) internal successors, (32646), 14329 states have internal predecessors, (32646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:10,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14330 states to 14330 states and 32646 transitions. [2022-01-18 06:15:10,778 INFO L78 Accepts]: Start accepts. Automaton has 14330 states and 32646 transitions. Word has length 43 [2022-01-18 06:15:10,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:15:10,778 INFO L470 AbstractCegarLoop]: Abstraction has 14330 states and 32646 transitions. [2022-01-18 06:15:10,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 49 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 06:15:10,779 INFO L276 IsEmpty]: Start isEmpty. Operand 14330 states and 32646 transitions. [2022-01-18 06:15:10,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-18 06:15:10,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:15:10,787 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:15:10,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-01-18 06:15:10,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable121 [2022-01-18 06:15:10,988 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:15:10,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:15:10,989 INFO L85 PathProgramCache]: Analyzing trace with hash -996475174, now seen corresponding path program 117 times [2022-01-18 06:15:10,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:15:10,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779136219] [2022-01-18 06:15:10,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:15:10,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:15:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:15:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:11,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:15:11,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779136219] [2022-01-18 06:15:11,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779136219] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:15:11,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191700680] [2022-01-18 06:15:11,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:15:11,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:15:11,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:15:11,503 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:15:11,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-01-18 06:15:11,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-01-18 06:15:11,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:15:11,534 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-01-18 06:15:11,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:15:12,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,632 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:12,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:12,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,647 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:12,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:12,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:12,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:12,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:12,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:12,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-01-18 06:15:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:12,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:15:14,585 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-01-18 06:15:14,586 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-01-18 06:15:17,202 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:17,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191700680] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:15:17,202 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:15:17,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 50 [2022-01-18 06:15:17,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291230228] [2022-01-18 06:15:17,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:15:17,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-18 06:15:17,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:15:17,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-18 06:15:17,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=2172, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 06:15:17,203 INFO L87 Difference]: Start difference. First operand 14330 states and 32646 transitions. Second operand has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 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 06:15:20,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:15:20,545 INFO L93 Difference]: Finished difference Result 20828 states and 46823 transitions. [2022-01-18 06:15:20,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 06:15:20,545 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 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 43 [2022-01-18 06:15:20,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:15:20,579 INFO L225 Difference]: With dead ends: 20828 [2022-01-18 06:15:20,579 INFO L226 Difference]: Without dead ends: 20733 [2022-01-18 06:15:20,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3865 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1679, Invalid=10977, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 06:15:20,580 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 370 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 2197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 639 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:15:20,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 2220 Invalid, 2197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1448 Invalid, 0 Unknown, 639 Unchecked, 0.9s Time] [2022-01-18 06:15:20,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20733 states. [2022-01-18 06:15:20,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20733 to 14388. [2022-01-18 06:15:20,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14388 states, 14387 states have (on average 2.2774032112323623) internal successors, (32765), 14387 states have internal predecessors, (32765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:20,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14388 states to 14388 states and 32765 transitions. [2022-01-18 06:15:20,818 INFO L78 Accepts]: Start accepts. Automaton has 14388 states and 32765 transitions. Word has length 43 [2022-01-18 06:15:20,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:15:20,818 INFO L470 AbstractCegarLoop]: Abstraction has 14388 states and 32765 transitions. [2022-01-18 06:15:20,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 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 06:15:20,818 INFO L276 IsEmpty]: Start isEmpty. Operand 14388 states and 32765 transitions. [2022-01-18 06:15:20,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-18 06:15:20,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:15:20,827 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:15:20,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-01-18 06:15:21,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-01-18 06:15:21,028 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:15:21,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:15:21,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1312980394, now seen corresponding path program 118 times [2022-01-18 06:15:21,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:15:21,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794342131] [2022-01-18 06:15:21,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:15:21,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:15:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:15:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:21,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:15:21,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794342131] [2022-01-18 06:15:21,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794342131] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:15:21,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873985804] [2022-01-18 06:15:21,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:15:21,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:15:21,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:15:21,431 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:15:21,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-01-18 06:15:21,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:15:21,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:15:21,454 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 65 conjunts are in the unsatisfiable core [2022-01-18 06:15:21,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:15:22,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:22,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:22,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:22,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:22,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:22,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,531 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:22,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 06:15:22,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 06:15:22,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 28 disjoint index pairs (out of 105 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 49 [2022-01-18 06:15:22,552 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:22,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:15:24,451 INFO L353 Elim1Store]: treesize reduction 756, result has 45.3 percent of original size [2022-01-18 06:15:24,451 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 148 treesize of output 682 [2022-01-18 06:15:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 27 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:28,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873985804] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:15:28,265 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:15:28,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 50 [2022-01-18 06:15:28,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307667615] [2022-01-18 06:15:28,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:15:28,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-18 06:15:28,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:15:28,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-18 06:15:28,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2168, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 06:15:28,265 INFO L87 Difference]: Start difference. First operand 14388 states and 32765 transitions. Second operand has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 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 06:15:32,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:15:32,533 INFO L93 Difference]: Finished difference Result 20298 states and 45651 transitions. [2022-01-18 06:15:32,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-18 06:15:32,533 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 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 43 [2022-01-18 06:15:32,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:15:32,565 INFO L225 Difference]: With dead ends: 20298 [2022-01-18 06:15:32,565 INFO L226 Difference]: Without dead ends: 20240 [2022-01-18 06:15:32,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4594 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2077, Invalid=13423, Unknown=0, NotChecked=0, Total=15500 [2022-01-18 06:15:32,567 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 309 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 816 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:15:32,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 2562 Invalid, 2870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1961 Invalid, 0 Unknown, 816 Unchecked, 1.2s Time] [2022-01-18 06:15:32,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20240 states. [2022-01-18 06:15:32,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20240 to 14340. [2022-01-18 06:15:32,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14340 states, 14339 states have (on average 2.2772857242485527) internal successors, (32654), 14339 states have internal predecessors, (32654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:32,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14340 states to 14340 states and 32654 transitions. [2022-01-18 06:15:32,836 INFO L78 Accepts]: Start accepts. Automaton has 14340 states and 32654 transitions. Word has length 43 [2022-01-18 06:15:32,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:15:32,836 INFO L470 AbstractCegarLoop]: Abstraction has 14340 states and 32654 transitions. [2022-01-18 06:15:32,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.215686274509804) internal successors, (113), 50 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 06:15:32,836 INFO L276 IsEmpty]: Start isEmpty. Operand 14340 states and 32654 transitions. [2022-01-18 06:15:32,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-18 06:15:32,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:15:32,844 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:15:32,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2022-01-18 06:15:33,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-01-18 06:15:33,044 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 06:15:33,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:15:33,045 INFO L85 PathProgramCache]: Analyzing trace with hash 341180362, now seen corresponding path program 119 times [2022-01-18 06:15:33,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:15:33,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569274120] [2022-01-18 06:15:33,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:15:33,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:15:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:15:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:33,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:15:33,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569274120] [2022-01-18 06:15:33,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569274120] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:15:33,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674617142] [2022-01-18 06:15:33,438 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:15:33,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:15:33,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:15:33,439 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 06:15:33,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-01-18 06:15:33,466 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-01-18 06:15:33,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:15:33,467 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 06:15:33,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:16:50,395 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-01-18 06:16:50,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-01-18 06:16:50,397 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2022-01-18 06:16:50,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-01-18 06:16:50,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-01-18 06:16:50,598 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 46 more [2022-01-18 06:16:50,602 INFO L158 Benchmark]: Toolchain (without parser) took 685062.40ms. Allocated memory was 337.6MB in the beginning and 1.2GB in the end (delta: 882.9MB). Free memory was 298.2MB in the beginning and 600.1MB in the end (delta: -302.0MB). Peak memory consumption was 581.7MB. Max. memory is 16.0GB. [2022-01-18 06:16:50,603 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.14ms. Allocated memory is still 337.6MB. Free memory is still 299.3MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 06:16:50,603 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.02ms. Allocated memory is still 337.6MB. Free memory was 298.1MB in the beginning and 296.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 06:16:50,603 INFO L158 Benchmark]: Boogie Preprocessor took 17.66ms. Allocated memory is still 337.6MB. Free memory was 296.6MB in the beginning and 295.7MB in the end (delta: 963.8kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 06:16:50,603 INFO L158 Benchmark]: RCFGBuilder took 185.66ms. Allocated memory is still 337.6MB. Free memory was 295.5MB in the beginning and 286.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2022-01-18 06:16:50,603 INFO L158 Benchmark]: TraceAbstraction took 684821.86ms. Allocated memory was 337.6MB in the beginning and 1.2GB in the end (delta: 882.9MB). Free memory was 286.0MB in the beginning and 600.1MB in the end (delta: -314.1MB). Peak memory consumption was 569.2MB. Max. memory is 16.0GB. [2022-01-18 06:16:50,603 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 0.14ms. Allocated memory is still 337.6MB. Free memory is still 299.3MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.02ms. Allocated memory is still 337.6MB. Free memory was 298.1MB in the beginning and 296.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 17.66ms. Allocated memory is still 337.6MB. Free memory was 296.6MB in the beginning and 295.7MB in the end (delta: 963.8kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 185.66ms. Allocated memory is still 337.6MB. Free memory was 295.5MB in the beginning and 286.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * TraceAbstraction took 684821.86ms. Allocated memory was 337.6MB in the beginning and 1.2GB in the end (delta: 882.9MB). Free memory was 286.0MB in the beginning and 600.1MB in the end (delta: -314.1MB). Peak memory consumption was 569.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...