/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/three-array-max.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-11 01:03:12,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-11 01:03:12,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-11 01:03:12,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-11 01:03:12,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-11 01:03:12,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-11 01:03:12,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-11 01:03:12,347 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-11 01:03:12,368 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-11 01:03:12,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-11 01:03:12,369 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-11 01:03:12,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-11 01:03:12,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-11 01:03:12,370 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-11 01:03:12,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-11 01:03:12,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-11 01:03:12,370 INFO L138 SettingsManager]: * Use SBE=true [2022-02-11 01:03:12,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-11 01:03:12,371 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-11 01:03:12,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-11 01:03:12,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-11 01:03:12,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-11 01:03:12,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-11 01:03:12,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-11 01:03:12,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-11 01:03:12,371 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-11 01:03:12,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-11 01:03:12,371 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-11 01:03:12,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-11 01:03:12,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-11 01:03:12,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-11 01:03:12,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-11 01:03:12,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-11 01:03:12,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-11 01:03:12,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-11 01:03:12,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-11 01:03:12,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-11 01:03:12,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-11 01:03:12,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-11 01:03:12,373 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-11 01:03:12,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-11 01:03:12,373 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-11 01:03:12,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-11 01:03:12,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-11 01:03:12,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-11 01:03:12,548 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-11 01:03:12,549 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-11 01:03:12,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/three-array-max.wvr.bpl [2022-02-11 01:03:12,550 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/three-array-max.wvr.bpl' [2022-02-11 01:03:12,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-11 01:03:12,576 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-11 01:03:12,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-11 01:03:12,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-11 01:03:12,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-11 01:03:12,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:03:12" (1/1) ... [2022-02-11 01:03:12,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:03:12" (1/1) ... [2022-02-11 01:03:12,613 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-11 01:03:12,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-11 01:03:12,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-11 01:03:12,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-11 01:03:12,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-11 01:03:12,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:03:12" (1/1) ... [2022-02-11 01:03:12,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:03:12" (1/1) ... [2022-02-11 01:03:12,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:03:12" (1/1) ... [2022-02-11 01:03:12,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:03:12" (1/1) ... [2022-02-11 01:03:12,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:03:12" (1/1) ... [2022-02-11 01:03:12,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:03:12" (1/1) ... [2022-02-11 01:03:12,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:03:12" (1/1) ... [2022-02-11 01:03:12,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-11 01:03:12,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-11 01:03:12,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-11 01:03:12,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-11 01:03:12,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:03:12" (1/1) ... [2022-02-11 01:03:12,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-11 01:03:12,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:12,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-11 01:03:12,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-11 01:03:12,707 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-11 01:03:12,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-11 01:03:12,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-11 01:03:12,707 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-11 01:03:12,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-11 01:03:12,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-11 01:03:12,707 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-11 01:03:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-11 01:03:12,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-11 01:03:12,708 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-11 01:03:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-11 01:03:12,708 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-11 01:03:12,709 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-11 01:03:12,749 INFO L234 CfgBuilder]: Building ICFG [2022-02-11 01:03:12,750 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-11 01:03:12,873 INFO L275 CfgBuilder]: Performing block encoding [2022-02-11 01:03:12,886 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-11 01:03:12,886 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-11 01:03:12,887 INFO L202 PluginConnector]: Adding new model three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 01:03:12 BoogieIcfgContainer [2022-02-11 01:03:12,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-11 01:03:12,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-11 01:03:12,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-11 01:03:12,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-11 01:03:12,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:03:12" (1/2) ... [2022-02-11 01:03:12,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d8f225 and model type three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.02 01:03:12, skipping insertion in model container [2022-02-11 01:03:12,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 01:03:12" (2/2) ... [2022-02-11 01:03:12,915 INFO L112 eAbstractionObserver]: Analyzing ICFG three-array-max.wvr.bpl [2022-02-11 01:03:12,918 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-11 01:03:12,931 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-11 01:03:12,931 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-11 01:03:12,931 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-11 01:03:12,973 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-11 01:03:13,020 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-11 01:03:13,026 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 [2022-02-11 01:03:13,026 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-11 01:03:13,037 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 32 transitions, 88 flow [2022-02-11 01:03:13,085 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 134 states, 133 states have (on average 2.9774436090225564) internal successors, (396), 133 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:13,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 133 states have (on average 2.9774436090225564) internal successors, (396), 133 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:13,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-11 01:03:13,093 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:13,093 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:13,094 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:13,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:13,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1053276962, now seen corresponding path program 1 times [2022-02-11 01:03:13,102 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:13,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950129698] [2022-02-11 01:03:13,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:13,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:13,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:13,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:13,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950129698] [2022-02-11 01:03:13,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950129698] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 01:03:13,249 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 01:03:13,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-11 01:03:13,250 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206729666] [2022-02-11 01:03:13,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 01:03:13,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-11 01:03:13,254 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:13,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-11 01:03:13,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-11 01:03:13,277 INFO L87 Difference]: Start difference. First operand has 134 states, 133 states have (on average 2.9774436090225564) internal successors, (396), 133 states have internal predecessors, (396), 0 states have call successors, (0), 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 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2022-02-11 01:03:13,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:13,380 INFO L93 Difference]: Finished difference Result 474 states and 1450 transitions. [2022-02-11 01:03:13,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 01:03:13,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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 [2022-02-11 01:03:13,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:13,419 INFO L225 Difference]: With dead ends: 474 [2022-02-11 01:03:13,420 INFO L226 Difference]: Without dead ends: 388 [2022-02-11 01:03:13,421 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-11 01:03:13,425 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 50 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:13,426 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 58 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:03:13,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-02-11 01:03:13,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 176. [2022-02-11 01:03:13,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 3.0914285714285716) internal successors, (541), 175 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:13,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 541 transitions. [2022-02-11 01:03:13,467 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 541 transitions. Word has length 19 [2022-02-11 01:03:13,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:13,467 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 541 transitions. [2022-02-11 01:03:13,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2022-02-11 01:03:13,468 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 541 transitions. [2022-02-11 01:03:13,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-11 01:03:13,469 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:13,469 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:13,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-11 01:03:13,470 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:13,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:13,470 INFO L85 PathProgramCache]: Analyzing trace with hash -324392928, now seen corresponding path program 1 times [2022-02-11 01:03:13,471 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:13,471 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110523954] [2022-02-11 01:03:13,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:13,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:13,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:13,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110523954] [2022-02-11 01:03:13,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110523954] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 01:03:13,512 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 01:03:13,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-11 01:03:13,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841623118] [2022-02-11 01:03:13,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 01:03:13,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-11 01:03:13,514 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:13,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-11 01:03:13,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-11 01:03:13,514 INFO L87 Difference]: Start difference. First operand 176 states and 541 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:13,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:13,582 INFO L93 Difference]: Finished difference Result 272 states and 825 transitions. [2022-02-11 01:03:13,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-11 01:03:13,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have 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 [2022-02-11 01:03:13,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:13,585 INFO L225 Difference]: With dead ends: 272 [2022-02-11 01:03:13,585 INFO L226 Difference]: Without dead ends: 249 [2022-02-11 01:03:13,585 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-11 01:03:13,586 INFO L934 BasicCegarLoop]: 14 mSDtfsCounter, 27 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:13,586 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 28 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:03:13,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-02-11 01:03:13,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 232. [2022-02-11 01:03:13,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 3.051948051948052) internal successors, (705), 231 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:13,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 705 transitions. [2022-02-11 01:03:13,599 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 705 transitions. Word has length 22 [2022-02-11 01:03:13,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:13,599 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 705 transitions. [2022-02-11 01:03:13,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:13,600 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 705 transitions. [2022-02-11 01:03:13,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-11 01:03:13,601 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:13,601 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:13,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-11 01:03:13,602 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:13,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:13,602 INFO L85 PathProgramCache]: Analyzing trace with hash -2144032734, now seen corresponding path program 2 times [2022-02-11 01:03:13,602 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:13,603 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196362489] [2022-02-11 01:03:13,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:13,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:13,644 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:13,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196362489] [2022-02-11 01:03:13,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196362489] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 01:03:13,644 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 01:03:13,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-11 01:03:13,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401242844] [2022-02-11 01:03:13,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 01:03:13,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-11 01:03:13,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:13,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-11 01:03:13,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-11 01:03:13,646 INFO L87 Difference]: Start difference. First operand 232 states and 705 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:13,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:13,709 INFO L93 Difference]: Finished difference Result 371 states and 1117 transitions. [2022-02-11 01:03:13,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-11 01:03:13,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have 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 [2022-02-11 01:03:13,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:13,712 INFO L225 Difference]: With dead ends: 371 [2022-02-11 01:03:13,713 INFO L226 Difference]: Without dead ends: 348 [2022-02-11 01:03:13,714 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-11 01:03:13,715 INFO L934 BasicCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:13,715 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 28 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:03:13,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-02-11 01:03:13,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 267. [2022-02-11 01:03:13,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 3.1203007518796992) internal successors, (830), 266 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 830 transitions. [2022-02-11 01:03:13,729 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 830 transitions. Word has length 22 [2022-02-11 01:03:13,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:13,729 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 830 transitions. [2022-02-11 01:03:13,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:13,729 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 830 transitions. [2022-02-11 01:03:13,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-11 01:03:13,731 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:13,731 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:13,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-11 01:03:13,731 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:13,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:13,732 INFO L85 PathProgramCache]: Analyzing trace with hash -698997086, now seen corresponding path program 3 times [2022-02-11 01:03:13,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:13,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710240571] [2022-02-11 01:03:13,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:13,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:13,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:13,790 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:13,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710240571] [2022-02-11 01:03:13,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710240571] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 01:03:13,790 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 01:03:13,790 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-11 01:03:13,791 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156565856] [2022-02-11 01:03:13,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 01:03:13,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-11 01:03:13,791 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:13,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-11 01:03:13,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-11 01:03:13,792 INFO L87 Difference]: Start difference. First operand 267 states and 830 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:13,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:13,829 INFO L93 Difference]: Finished difference Result 301 states and 881 transitions. [2022-02-11 01:03:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-11 01:03:13,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have 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 [2022-02-11 01:03:13,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:13,833 INFO L225 Difference]: With dead ends: 301 [2022-02-11 01:03:13,833 INFO L226 Difference]: Without dead ends: 279 [2022-02-11 01:03:13,834 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-11 01:03:13,842 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:13,844 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 29 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 01:03:13,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-02-11 01:03:13,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 272. [2022-02-11 01:03:13,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 3.022140221402214) internal successors, (819), 271 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:13,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 819 transitions. [2022-02-11 01:03:13,860 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 819 transitions. Word has length 22 [2022-02-11 01:03:13,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:13,861 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 819 transitions. [2022-02-11 01:03:13,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:13,861 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 819 transitions. [2022-02-11 01:03:13,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 01:03:13,862 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:13,862 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:13,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-11 01:03:13,863 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:13,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash 665668420, now seen corresponding path program 1 times [2022-02-11 01:03:13,863 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:13,863 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945288574] [2022-02-11 01:03:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:13,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:13,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:13,930 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:13,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945288574] [2022-02-11 01:03:13,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945288574] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:13,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274304361] [2022-02-11 01:03:13,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:13,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:13,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:13,932 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) [2022-02-11 01:03:13,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-11 01:03:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:13,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2022-02-11 01:03:13,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:14,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:14,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:14,128 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274304361] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:14,129 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:14,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2022-02-11 01:03:14,129 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049716951] [2022-02-11 01:03:14,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:14,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 01:03:14,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:14,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 01:03:14,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-11 01:03:14,133 INFO L87 Difference]: Start difference. First operand 272 states and 819 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:14,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:14,208 INFO L93 Difference]: Finished difference Result 360 states and 1056 transitions. [2022-02-11 01:03:14,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 01:03:14,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have 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 [2022-02-11 01:03:14,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:14,210 INFO L225 Difference]: With dead ends: 360 [2022-02-11 01:03:14,210 INFO L226 Difference]: Without dead ends: 360 [2022-02-11 01:03:14,212 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-11 01:03:14,215 INFO L934 BasicCegarLoop]: 17 mSDtfsCounter, 54 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:14,215 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 61 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:03:14,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-02-11 01:03:14,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 288. [2022-02-11 01:03:14,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 3.0034843205574915) internal successors, (862), 287 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:14,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 862 transitions. [2022-02-11 01:03:14,235 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 862 transitions. Word has length 24 [2022-02-11 01:03:14,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:14,236 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 862 transitions. [2022-02-11 01:03:14,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:14,236 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 862 transitions. [2022-02-11 01:03:14,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-02-11 01:03:14,241 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:14,242 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:14,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-11 01:03:14,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:14,452 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:14,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:14,452 INFO L85 PathProgramCache]: Analyzing trace with hash 55281188, now seen corresponding path program 2 times [2022-02-11 01:03:14,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:14,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716256257] [2022-02-11 01:03:14,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:14,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:14,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:14,507 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:14,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716256257] [2022-02-11 01:03:14,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716256257] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 01:03:14,508 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 01:03:14,508 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-11 01:03:14,508 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666369458] [2022-02-11 01:03:14,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 01:03:14,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-11 01:03:14,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:14,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-11 01:03:14,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-11 01:03:14,509 INFO L87 Difference]: Start difference. First operand 288 states and 862 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:14,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:14,546 INFO L93 Difference]: Finished difference Result 276 states and 851 transitions. [2022-02-11 01:03:14,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-11 01:03:14,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-02-11 01:03:14,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:14,547 INFO L225 Difference]: With dead ends: 276 [2022-02-11 01:03:14,547 INFO L226 Difference]: Without dead ends: 276 [2022-02-11 01:03:14,548 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-11 01:03:14,548 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 13 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:14,549 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 30 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 01:03:14,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-02-11 01:03:14,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 243. [2022-02-11 01:03:14,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 3.0950413223140494) internal successors, (749), 242 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:14,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 749 transitions. [2022-02-11 01:03:14,556 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 749 transitions. Word has length 24 [2022-02-11 01:03:14,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:14,556 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 749 transitions. [2022-02-11 01:03:14,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:14,556 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 749 transitions. [2022-02-11 01:03:14,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:03:14,557 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:14,557 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:14,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-11 01:03:14,557 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:14,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:14,558 INFO L85 PathProgramCache]: Analyzing trace with hash 109515422, now seen corresponding path program 1 times [2022-02-11 01:03:14,558 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:14,558 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198784388] [2022-02-11 01:03:14,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:14,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:14,951 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:14,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198784388] [2022-02-11 01:03:14,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198784388] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:14,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783018587] [2022-02-11 01:03:14,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:14,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:14,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:14,952 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) [2022-02-11 01:03:14,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-11 01:03:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:14,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-11 01:03:14,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:15,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2022-02-11 01:03:15,395 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 47 [2022-02-11 01:03:15,399 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-02-11 01:03:15,540 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 50 treesize of output 38 [2022-02-11 01:03:15,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:15,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:15,662 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 91 treesize of output 85 [2022-02-11 01:03:16,334 INFO L353 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2022-02-11 01:03:16,334 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 23 treesize of output 34 [2022-02-11 01:03:16,370 INFO L353 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-02-11 01:03:16,370 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 24 treesize of output 1 [2022-02-11 01:03:16,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:16,379 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-02-11 01:03:16,386 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-02-11 01:03:16,387 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 21 treesize of output 1 [2022-02-11 01:03:16,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:16,394 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-02-11 01:03:16,402 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-02-11 01:03:16,402 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 23 treesize of output 1 [2022-02-11 01:03:16,421 INFO L353 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-02-11 01:03:16,422 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 27 [2022-02-11 01:03:16,440 INFO L353 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-02-11 01:03:16,440 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 22 treesize of output 1 [2022-02-11 01:03:16,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:16,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783018587] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:16,514 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:16,514 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-02-11 01:03:16,514 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646622797] [2022-02-11 01:03:16,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:16,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-11 01:03:16,515 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:16,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-11 01:03:16,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-02-11 01:03:16,516 INFO L87 Difference]: Start difference. First operand 243 states and 749 transitions. Second operand has 20 states, 20 states have (on average 3.1) internal successors, (62), 19 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) [2022-02-11 01:03:16,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:16,777 INFO L93 Difference]: Finished difference Result 471 states and 1460 transitions. [2022-02-11 01:03:16,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-11 01:03:16,777 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.1) internal successors, (62), 19 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 26 [2022-02-11 01:03:16,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:16,779 INFO L225 Difference]: With dead ends: 471 [2022-02-11 01:03:16,779 INFO L226 Difference]: Without dead ends: 428 [2022-02-11 01:03:16,780 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-02-11 01:03:16,780 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 106 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:16,780 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 113 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:03:16,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-02-11 01:03:16,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 329. [2022-02-11 01:03:16,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 3.1219512195121952) internal successors, (1024), 328 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:16,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 1024 transitions. [2022-02-11 01:03:16,788 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 1024 transitions. Word has length 26 [2022-02-11 01:03:16,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:16,788 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 1024 transitions. [2022-02-11 01:03:16,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.1) internal successors, (62), 19 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) [2022-02-11 01:03:16,788 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 1024 transitions. [2022-02-11 01:03:16,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:03:16,789 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:16,789 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:16,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-11 01:03:17,003 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,SelfDestructingSolverStorable6 [2022-02-11 01:03:17,004 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:17,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:17,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1564312640, now seen corresponding path program 2 times [2022-02-11 01:03:17,004 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:17,005 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372239731] [2022-02-11 01:03:17,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:17,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:17,200 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:17,200 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372239731] [2022-02-11 01:03:17,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372239731] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:17,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171496888] [2022-02-11 01:03:17,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:03:17,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:17,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:17,202 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) [2022-02-11 01:03:17,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-11 01:03:17,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:03:17,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:03:17,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-11 01:03:17,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:17,392 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-02-11 01:03:17,425 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 33 [2022-02-11 01:03:17,428 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 51 [2022-02-11 01:03:17,582 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 50 treesize of output 38 [2022-02-11 01:03:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:17,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:17,906 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 32 treesize of output 30 [2022-02-11 01:03:17,920 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 36 treesize of output 34 [2022-02-11 01:03:17,935 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 32 treesize of output 30 [2022-02-11 01:03:17,949 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 28 treesize of output 26 [2022-02-11 01:03:18,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:18,477 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-02-11 01:03:18,482 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-02-11 01:03:18,483 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 21 treesize of output 1 [2022-02-11 01:03:18,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:18,487 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-02-11 01:03:18,493 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-02-11 01:03:18,494 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 23 treesize of output 1 [2022-02-11 01:03:18,511 INFO L353 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2022-02-11 01:03:18,512 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 28 treesize of output 39 [2022-02-11 01:03:18,580 INFO L353 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2022-02-11 01:03:18,581 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 27 treesize of output 39 [2022-02-11 01:03:18,612 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:03:18,612 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 25 treesize of output 41 [2022-02-11 01:03:18,656 INFO L353 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-02-11 01:03:18,656 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 26 treesize of output 1 [2022-02-11 01:03:18,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:18,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171496888] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:18,721 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:18,722 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-02-11 01:03:18,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057215948] [2022-02-11 01:03:18,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:18,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-11 01:03:18,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:18,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-11 01:03:18,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-02-11 01:03:18,723 INFO L87 Difference]: Start difference. First operand 329 states and 1024 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 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) [2022-02-11 01:03:19,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:19,101 INFO L93 Difference]: Finished difference Result 655 states and 2075 transitions. [2022-02-11 01:03:19,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-11 01:03:19,101 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 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 26 [2022-02-11 01:03:19,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:19,104 INFO L225 Difference]: With dead ends: 655 [2022-02-11 01:03:19,104 INFO L226 Difference]: Without dead ends: 612 [2022-02-11 01:03:19,105 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-02-11 01:03:19,105 INFO L934 BasicCegarLoop]: 21 mSDtfsCounter, 142 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:19,105 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 122 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:03:19,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-02-11 01:03:19,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 349. [2022-02-11 01:03:19,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 3.1264367816091956) internal successors, (1088), 348 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:19,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1088 transitions. [2022-02-11 01:03:19,114 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1088 transitions. Word has length 26 [2022-02-11 01:03:19,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:19,114 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 1088 transitions. [2022-02-11 01:03:19,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 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) [2022-02-11 01:03:19,115 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1088 transitions. [2022-02-11 01:03:19,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-11 01:03:19,115 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:19,115 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:19,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-11 01:03:19,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:19,332 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:19,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:19,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1161623412, now seen corresponding path program 3 times [2022-02-11 01:03:19,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:19,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842958837] [2022-02-11 01:03:19,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:19,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:19,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:19,483 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:19,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842958837] [2022-02-11 01:03:19,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842958837] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:19,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447683788] [2022-02-11 01:03:19,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:03:19,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:19,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:19,484 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) [2022-02-11 01:03:19,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-11 01:03:19,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 01:03:19,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:03:19,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-11 01:03:19,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:19,672 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-02-11 01:03:19,754 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 52 treesize of output 44 [2022-02-11 01:03:19,791 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 32 [2022-02-11 01:03:19,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 28 [2022-02-11 01:03:19,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:19,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:20,318 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 32 treesize of output 30 [2022-02-11 01:03:20,329 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 28 treesize of output 26 [2022-02-11 01:03:20,347 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 32 treesize of output 30 [2022-02-11 01:03:20,357 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 36 treesize of output 34 [2022-02-11 01:03:20,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:20,847 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-02-11 01:03:20,869 INFO L353 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2022-02-11 01:03:20,869 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 28 treesize of output 39 [2022-02-11 01:03:20,930 INFO L353 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2022-02-11 01:03:20,930 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 27 treesize of output 39 [2022-02-11 01:03:20,953 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-02-11 01:03:20,954 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 23 treesize of output 1 [2022-02-11 01:03:20,968 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:03:20,969 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 25 treesize of output 41 [2022-02-11 01:03:21,038 INFO L353 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-02-11 01:03:21,039 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 26 treesize of output 1 [2022-02-11 01:03:21,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:21,044 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-02-11 01:03:21,050 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-02-11 01:03:21,050 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 21 treesize of output 1 [2022-02-11 01:03:21,116 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-11 01:03:21,116 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 8 treesize of output 8 [2022-02-11 01:03:21,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:03:21,124 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2022-02-11 01:03:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:21,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447683788] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:21,148 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:21,148 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-02-11 01:03:21,148 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136584011] [2022-02-11 01:03:21,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:21,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-11 01:03:21,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:21,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-11 01:03:21,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2022-02-11 01:03:21,149 INFO L87 Difference]: Start difference. First operand 349 states and 1088 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:21,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:21,486 INFO L93 Difference]: Finished difference Result 558 states and 1755 transitions. [2022-02-11 01:03:21,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-11 01:03:21,486 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-02-11 01:03:21,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:21,488 INFO L225 Difference]: With dead ends: 558 [2022-02-11 01:03:21,488 INFO L226 Difference]: Without dead ends: 499 [2022-02-11 01:03:21,489 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2022-02-11 01:03:21,489 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 194 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:21,489 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 95 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:03:21,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-02-11 01:03:21,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 349. [2022-02-11 01:03:21,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 3.1436781609195403) internal successors, (1094), 348 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:21,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1094 transitions. [2022-02-11 01:03:21,498 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1094 transitions. Word has length 26 [2022-02-11 01:03:21,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:21,499 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 1094 transitions. [2022-02-11 01:03:21,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:21,499 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1094 transitions. [2022-02-11 01:03:21,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:03:21,500 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:21,500 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:21,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-11 01:03:21,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:21,716 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:21,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:21,716 INFO L85 PathProgramCache]: Analyzing trace with hash -709205764, now seen corresponding path program 4 times [2022-02-11 01:03:21,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:21,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416957892] [2022-02-11 01:03:21,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:21,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:21,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:21,748 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:21,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416957892] [2022-02-11 01:03:21,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416957892] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:21,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639184449] [2022-02-11 01:03:21,748 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:03:21,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:21,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:21,751 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) [2022-02-11 01:03:21,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-11 01:03:21,780 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:03:21,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:03:21,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 01:03:21,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:21,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:21,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:21,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639184449] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:21,857 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:21,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-02-11 01:03:21,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670162542] [2022-02-11 01:03:21,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:21,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 01:03:21,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:21,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 01:03:21,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-02-11 01:03:21,858 INFO L87 Difference]: Start difference. First operand 349 states and 1094 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:21,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:21,955 INFO L93 Difference]: Finished difference Result 871 states and 2716 transitions. [2022-02-11 01:03:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-11 01:03:21,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have 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 [2022-02-11 01:03:21,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:21,959 INFO L225 Difference]: With dead ends: 871 [2022-02-11 01:03:21,959 INFO L226 Difference]: Without dead ends: 871 [2022-02-11 01:03:21,959 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-02-11 01:03:21,959 INFO L934 BasicCegarLoop]: 19 mSDtfsCounter, 102 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:21,960 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 81 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:03:21,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-02-11 01:03:21,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 579. [2022-02-11 01:03:21,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 578 states have (on average 3.330449826989619) internal successors, (1925), 578 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:21,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 1925 transitions. [2022-02-11 01:03:21,974 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 1925 transitions. Word has length 28 [2022-02-11 01:03:21,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:21,974 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 1925 transitions. [2022-02-11 01:03:21,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:21,975 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 1925 transitions. [2022-02-11 01:03:21,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:03:21,977 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:21,977 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:21,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-11 01:03:22,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-02-11 01:03:22,190 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:22,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:22,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1896545024, now seen corresponding path program 5 times [2022-02-11 01:03:22,191 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:22,191 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943450352] [2022-02-11 01:03:22,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:22,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:22,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:22,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943450352] [2022-02-11 01:03:22,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943450352] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:22,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150493895] [2022-02-11 01:03:22,215 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:03:22,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:22,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:22,219 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) [2022-02-11 01:03:22,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-11 01:03:22,247 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:03:22,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:03:22,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 01:03:22,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:22,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:22,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:22,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150493895] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:22,322 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:22,322 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-02-11 01:03:22,322 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972270845] [2022-02-11 01:03:22,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:22,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 01:03:22,323 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:22,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 01:03:22,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-11 01:03:22,323 INFO L87 Difference]: Start difference. First operand 579 states and 1925 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:22,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:22,394 INFO L93 Difference]: Finished difference Result 861 states and 2683 transitions. [2022-02-11 01:03:22,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-11 01:03:22,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have 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 [2022-02-11 01:03:22,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:22,399 INFO L225 Difference]: With dead ends: 861 [2022-02-11 01:03:22,399 INFO L226 Difference]: Without dead ends: 861 [2022-02-11 01:03:22,399 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-02-11 01:03:22,400 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 95 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:22,400 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 59 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:03:22,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2022-02-11 01:03:22,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 575. [2022-02-11 01:03:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 3.308362369337979) internal successors, (1899), 574 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:22,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1899 transitions. [2022-02-11 01:03:22,435 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1899 transitions. Word has length 28 [2022-02-11 01:03:22,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:22,435 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 1899 transitions. [2022-02-11 01:03:22,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:22,435 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1899 transitions. [2022-02-11 01:03:22,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-11 01:03:22,437 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:22,437 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:22,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-11 01:03:22,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:22,641 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:22,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:22,641 INFO L85 PathProgramCache]: Analyzing trace with hash 454285246, now seen corresponding path program 6 times [2022-02-11 01:03:22,641 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:22,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679302384] [2022-02-11 01:03:22,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:22,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:22,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:22,664 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:22,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679302384] [2022-02-11 01:03:22,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679302384] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:22,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642774381] [2022-02-11 01:03:22,665 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:03:22,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:22,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:22,671 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) [2022-02-11 01:03:22,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-11 01:03:22,698 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 01:03:22,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:03:22,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-11 01:03:22,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:22,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:22,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:22,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:22,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642774381] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:22,811 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:22,811 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-02-11 01:03:22,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386569175] [2022-02-11 01:03:22,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:22,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 01:03:22,812 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:22,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 01:03:22,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-11 01:03:22,812 INFO L87 Difference]: Start difference. First operand 575 states and 1899 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:23,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:23,331 INFO L93 Difference]: Finished difference Result 2153 states and 6965 transitions. [2022-02-11 01:03:23,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-11 01:03:23,332 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have 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 [2022-02-11 01:03:23,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:23,341 INFO L225 Difference]: With dead ends: 2153 [2022-02-11 01:03:23,341 INFO L226 Difference]: Without dead ends: 2153 [2022-02-11 01:03:23,341 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2022-02-11 01:03:23,342 INFO L934 BasicCegarLoop]: 24 mSDtfsCounter, 265 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:23,342 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 152 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 01:03:23,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2022-02-11 01:03:23,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 741. [2022-02-11 01:03:23,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 3.574324324324324) internal successors, (2645), 740 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:23,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 2645 transitions. [2022-02-11 01:03:23,365 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 2645 transitions. Word has length 28 [2022-02-11 01:03:23,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:23,365 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 2645 transitions. [2022-02-11 01:03:23,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:23,366 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 2645 transitions. [2022-02-11 01:03:23,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 01:03:23,367 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:23,367 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:23,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-11 01:03:23,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:23,578 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:23,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:23,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1068511452, now seen corresponding path program 7 times [2022-02-11 01:03:23,579 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:23,579 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532007773] [2022-02-11 01:03:23,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:23,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:23,601 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:23,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:23,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532007773] [2022-02-11 01:03:23,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532007773] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:23,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019068535] [2022-02-11 01:03:23,602 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:03:23,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:23,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:23,603 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) [2022-02-11 01:03:23,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-11 01:03:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:23,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 01:03:23,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:23,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:23,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019068535] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:23,712 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:23,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-02-11 01:03:23,713 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946429750] [2022-02-11 01:03:23,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:23,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 01:03:23,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:23,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 01:03:23,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-02-11 01:03:23,713 INFO L87 Difference]: Start difference. First operand 741 states and 2645 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 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) [2022-02-11 01:03:23,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:23,822 INFO L93 Difference]: Finished difference Result 1909 states and 6809 transitions. [2022-02-11 01:03:23,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-11 01:03:23,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 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 29 [2022-02-11 01:03:23,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:23,830 INFO L225 Difference]: With dead ends: 1909 [2022-02-11 01:03:23,830 INFO L226 Difference]: Without dead ends: 1747 [2022-02-11 01:03:23,830 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-02-11 01:03:23,831 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 98 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:23,831 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 58 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:03:23,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2022-02-11 01:03:23,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1449. [2022-02-11 01:03:23,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1448 states have (on average 3.7327348066298343) internal successors, (5405), 1448 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 5405 transitions. [2022-02-11 01:03:23,866 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 5405 transitions. Word has length 29 [2022-02-11 01:03:23,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:23,866 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 5405 transitions. [2022-02-11 01:03:23,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 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) [2022-02-11 01:03:23,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 5405 transitions. [2022-02-11 01:03:23,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 01:03:23,869 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:23,869 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:23,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-11 01:03:24,083 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,SelfDestructingSolverStorable12 [2022-02-11 01:03:24,083 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:24,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:24,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1671938888, now seen corresponding path program 8 times [2022-02-11 01:03:24,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:24,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140618104] [2022-02-11 01:03:24,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:24,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:24,119 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:24,119 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140618104] [2022-02-11 01:03:24,119 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140618104] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:24,119 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585448625] [2022-02-11 01:03:24,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:03:24,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:24,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:24,124 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) [2022-02-11 01:03:24,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-11 01:03:24,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:03:24,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:03:24,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 01:03:24,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:24,201 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:24,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:24,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585448625] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:24,244 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:24,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-02-11 01:03:24,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763550903] [2022-02-11 01:03:24,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:24,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 01:03:24,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:24,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 01:03:24,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-11 01:03:24,245 INFO L87 Difference]: Start difference. First operand 1449 states and 5405 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:24,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:24,734 INFO L93 Difference]: Finished difference Result 3995 states and 14025 transitions. [2022-02-11 01:03:24,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 01:03:24,735 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-02-11 01:03:24,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:24,753 INFO L225 Difference]: With dead ends: 3995 [2022-02-11 01:03:24,753 INFO L226 Difference]: Without dead ends: 3839 [2022-02-11 01:03:24,753 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=372, Invalid=1188, Unknown=0, NotChecked=0, Total=1560 [2022-02-11 01:03:24,754 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 442 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:24,754 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 84 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:03:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2022-02-11 01:03:24,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 2530. [2022-02-11 01:03:24,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2529 states have (on average 3.837089758797944) internal successors, (9704), 2529 states have internal predecessors, (9704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:24,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 9704 transitions. [2022-02-11 01:03:24,820 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 9704 transitions. Word has length 29 [2022-02-11 01:03:24,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:24,820 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 9704 transitions. [2022-02-11 01:03:24,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:24,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 9704 transitions. [2022-02-11 01:03:24,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 01:03:24,826 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:24,826 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:24,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-11 01:03:25,039 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,SelfDestructingSolverStorable13 [2022-02-11 01:03:25,039 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:25,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:25,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1406736764, now seen corresponding path program 9 times [2022-02-11 01:03:25,040 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:25,040 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489793009] [2022-02-11 01:03:25,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:25,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:25,068 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:25,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:25,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489793009] [2022-02-11 01:03:25,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489793009] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:25,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591384625] [2022-02-11 01:03:25,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:03:25,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:25,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:25,072 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) [2022-02-11 01:03:25,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-11 01:03:25,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 01:03:25,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:03:25,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 01:03:25,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:25,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:25,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:25,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591384625] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:25,185 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:25,185 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-02-11 01:03:25,185 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138533843] [2022-02-11 01:03:25,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:25,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 01:03:25,186 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:25,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 01:03:25,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-11 01:03:25,186 INFO L87 Difference]: Start difference. First operand 2530 states and 9704 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 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) [2022-02-11 01:03:25,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:25,285 INFO L93 Difference]: Finished difference Result 3602 states and 13510 transitions. [2022-02-11 01:03:25,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 01:03:25,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 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 29 [2022-02-11 01:03:25,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:25,313 INFO L225 Difference]: With dead ends: 3602 [2022-02-11 01:03:25,313 INFO L226 Difference]: Without dead ends: 3568 [2022-02-11 01:03:25,313 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-02-11 01:03:25,314 INFO L934 BasicCegarLoop]: 20 mSDtfsCounter, 70 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:25,314 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 57 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:03:25,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2022-02-11 01:03:25,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 3231. [2022-02-11 01:03:25,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3231 states, 3230 states have (on average 3.8625386996904023) internal successors, (12476), 3230 states have internal predecessors, (12476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:25,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3231 states to 3231 states and 12476 transitions. [2022-02-11 01:03:25,389 INFO L78 Accepts]: Start accepts. Automaton has 3231 states and 12476 transitions. Word has length 29 [2022-02-11 01:03:25,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:25,389 INFO L470 AbstractCegarLoop]: Abstraction has 3231 states and 12476 transitions. [2022-02-11 01:03:25,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 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) [2022-02-11 01:03:25,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3231 states and 12476 transitions. [2022-02-11 01:03:25,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 01:03:25,396 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:25,396 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:25,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-11 01:03:25,607 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,SelfDestructingSolverStorable14 [2022-02-11 01:03:25,607 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:25,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:25,608 INFO L85 PathProgramCache]: Analyzing trace with hash 466613648, now seen corresponding path program 10 times [2022-02-11 01:03:25,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:25,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163812207] [2022-02-11 01:03:25,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:25,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:25,637 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:25,637 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:25,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163812207] [2022-02-11 01:03:25,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163812207] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:25,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183844752] [2022-02-11 01:03:25,637 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:03:25,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:25,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:25,639 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) [2022-02-11 01:03:25,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-11 01:03:25,665 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:03:25,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:03:25,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 01:03:25,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:25,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:25,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183844752] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:25,740 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:25,740 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-02-11 01:03:25,740 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621792751] [2022-02-11 01:03:25,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:25,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 01:03:25,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:25,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 01:03:25,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-11 01:03:25,741 INFO L87 Difference]: Start difference. First operand 3231 states and 12476 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 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) [2022-02-11 01:03:25,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:25,834 INFO L93 Difference]: Finished difference Result 3778 states and 14160 transitions. [2022-02-11 01:03:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-11 01:03:25,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 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 29 [2022-02-11 01:03:25,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:25,844 INFO L225 Difference]: With dead ends: 3778 [2022-02-11 01:03:25,844 INFO L226 Difference]: Without dead ends: 3778 [2022-02-11 01:03:25,844 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-11 01:03:25,845 INFO L934 BasicCegarLoop]: 17 mSDtfsCounter, 75 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:25,845 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 64 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:03:25,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2022-02-11 01:03:25,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3280. [2022-02-11 01:03:25,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3280 states, 3279 states have (on average 3.868862458066484) internal successors, (12686), 3279 states have internal predecessors, (12686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:25,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3280 states to 3280 states and 12686 transitions. [2022-02-11 01:03:25,931 INFO L78 Accepts]: Start accepts. Automaton has 3280 states and 12686 transitions. Word has length 29 [2022-02-11 01:03:25,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:25,931 INFO L470 AbstractCegarLoop]: Abstraction has 3280 states and 12686 transitions. [2022-02-11 01:03:25,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 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) [2022-02-11 01:03:25,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3280 states and 12686 transitions. [2022-02-11 01:03:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 01:03:25,939 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:25,939 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:25,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-11 01:03:26,155 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,SelfDestructingSolverStorable15 [2022-02-11 01:03:26,155 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:26,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:26,156 INFO L85 PathProgramCache]: Analyzing trace with hash -339625636, now seen corresponding path program 11 times [2022-02-11 01:03:26,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:26,156 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305809062] [2022-02-11 01:03:26,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:26,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:26,177 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:26,178 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:26,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305809062] [2022-02-11 01:03:26,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305809062] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:26,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537585503] [2022-02-11 01:03:26,178 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:03:26,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:26,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:26,179 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) [2022-02-11 01:03:26,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-11 01:03:26,204 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:03:26,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:03:26,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 01:03:26,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:26,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:26,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537585503] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:26,287 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:26,287 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-02-11 01:03:26,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039408209] [2022-02-11 01:03:26,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:26,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 01:03:26,287 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:26,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 01:03:26,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-11 01:03:26,288 INFO L87 Difference]: Start difference. First operand 3280 states and 12686 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 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) [2022-02-11 01:03:26,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:26,391 INFO L93 Difference]: Finished difference Result 3719 states and 13964 transitions. [2022-02-11 01:03:26,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-11 01:03:26,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 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 29 [2022-02-11 01:03:26,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:26,406 INFO L225 Difference]: With dead ends: 3719 [2022-02-11 01:03:26,406 INFO L226 Difference]: Without dead ends: 3719 [2022-02-11 01:03:26,407 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-02-11 01:03:26,408 INFO L934 BasicCegarLoop]: 18 mSDtfsCounter, 78 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:26,408 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 72 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:03:26,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2022-02-11 01:03:26,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3290. [2022-02-11 01:03:26,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 3289 states have (on average 3.834296138643965) internal successors, (12611), 3289 states have internal predecessors, (12611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:26,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 12611 transitions. [2022-02-11 01:03:26,481 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 12611 transitions. Word has length 29 [2022-02-11 01:03:26,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:26,481 INFO L470 AbstractCegarLoop]: Abstraction has 3290 states and 12611 transitions. [2022-02-11 01:03:26,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 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) [2022-02-11 01:03:26,481 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 12611 transitions. [2022-02-11 01:03:26,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 01:03:26,488 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:26,488 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:26,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-11 01:03:26,703 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,SelfDestructingSolverStorable16 [2022-02-11 01:03:26,704 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:26,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:26,704 INFO L85 PathProgramCache]: Analyzing trace with hash 669340768, now seen corresponding path program 12 times [2022-02-11 01:03:26,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:26,705 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895572524] [2022-02-11 01:03:26,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:26,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:26,740 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:26,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895572524] [2022-02-11 01:03:26,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895572524] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:26,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758728924] [2022-02-11 01:03:26,740 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:03:26,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:26,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:26,741 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) [2022-02-11 01:03:26,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-11 01:03:26,769 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 01:03:26,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:03:26,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 01:03:26,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:26,818 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:26,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:26,866 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:26,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758728924] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:26,867 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:26,867 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-02-11 01:03:26,867 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229710612] [2022-02-11 01:03:26,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:26,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 01:03:26,867 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:26,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 01:03:26,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-11 01:03:26,867 INFO L87 Difference]: Start difference. First operand 3290 states and 12611 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:26,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:26,994 INFO L93 Difference]: Finished difference Result 6009 states and 21708 transitions. [2022-02-11 01:03:26,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-11 01:03:26,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have 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 [2022-02-11 01:03:26,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:27,036 INFO L225 Difference]: With dead ends: 6009 [2022-02-11 01:03:27,036 INFO L226 Difference]: Without dead ends: 5981 [2022-02-11 01:03:27,036 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-02-11 01:03:27,036 INFO L934 BasicCegarLoop]: 35 mSDtfsCounter, 98 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:27,037 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 115 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 01:03:27,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5981 states. [2022-02-11 01:03:27,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5981 to 4628. [2022-02-11 01:03:27,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4628 states, 4627 states have (on average 3.7905770477631293) internal successors, (17539), 4627 states have internal predecessors, (17539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:27,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4628 states to 4628 states and 17539 transitions. [2022-02-11 01:03:27,137 INFO L78 Accepts]: Start accepts. Automaton has 4628 states and 17539 transitions. Word has length 31 [2022-02-11 01:03:27,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:27,138 INFO L470 AbstractCegarLoop]: Abstraction has 4628 states and 17539 transitions. [2022-02-11 01:03:27,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:27,138 INFO L276 IsEmpty]: Start isEmpty. Operand 4628 states and 17539 transitions. [2022-02-11 01:03:27,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 01:03:27,148 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:27,148 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:27,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-11 01:03:27,364 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,SelfDestructingSolverStorable17 [2022-02-11 01:03:27,364 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:27,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:27,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1344478628, now seen corresponding path program 13 times [2022-02-11 01:03:27,365 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:27,365 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86399455] [2022-02-11 01:03:27,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:27,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:27,393 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:27,393 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:27,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86399455] [2022-02-11 01:03:27,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86399455] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:27,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161171805] [2022-02-11 01:03:27,393 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:03:27,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:27,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:27,395 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) [2022-02-11 01:03:27,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-11 01:03:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:27,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-11 01:03:27,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:27,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:03:27,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161171805] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:27,512 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:27,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-02-11 01:03:27,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044507808] [2022-02-11 01:03:27,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:27,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-11 01:03:27,512 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:27,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-11 01:03:27,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-02-11 01:03:27,513 INFO L87 Difference]: Start difference. First operand 4628 states and 17539 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:27,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:27,955 INFO L93 Difference]: Finished difference Result 6507 states and 22973 transitions. [2022-02-11 01:03:27,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-11 01:03:27,955 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-02-11 01:03:27,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:27,972 INFO L225 Difference]: With dead ends: 6507 [2022-02-11 01:03:27,972 INFO L226 Difference]: Without dead ends: 6444 [2022-02-11 01:03:27,973 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=266, Invalid=856, Unknown=0, NotChecked=0, Total=1122 [2022-02-11 01:03:27,973 INFO L934 BasicCegarLoop]: 21 mSDtfsCounter, 227 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:27,973 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 147 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 01:03:27,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6444 states. [2022-02-11 01:03:28,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6444 to 4591. [2022-02-11 01:03:28,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4591 states, 4590 states have (on average 3.7444444444444445) internal successors, (17187), 4590 states have internal predecessors, (17187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:28,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4591 states to 4591 states and 17187 transitions. [2022-02-11 01:03:28,126 INFO L78 Accepts]: Start accepts. Automaton has 4591 states and 17187 transitions. Word has length 31 [2022-02-11 01:03:28,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:28,126 INFO L470 AbstractCegarLoop]: Abstraction has 4591 states and 17187 transitions. [2022-02-11 01:03:28,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:28,126 INFO L276 IsEmpty]: Start isEmpty. Operand 4591 states and 17187 transitions. [2022-02-11 01:03:28,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:03:28,136 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:28,136 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:28,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-11 01:03:28,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:28,341 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:28,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:28,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1424343976, now seen corresponding path program 14 times [2022-02-11 01:03:28,341 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:28,341 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311011403] [2022-02-11 01:03:28,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:28,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:29,547 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:29,547 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:29,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311011403] [2022-02-11 01:03:29,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311011403] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:29,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068597865] [2022-02-11 01:03:29,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:03:29,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:29,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:29,552 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) [2022-02-11 01:03:29,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-11 01:03:29,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:03:29,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:03:29,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-11 01:03:29,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:30,337 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2022-02-11 01:03:30,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 73 [2022-02-11 01:03:30,565 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 122 [2022-02-11 01:03:30,569 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 65 [2022-02-11 01:03:30,959 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 48 [2022-02-11 01:03:30,980 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:30,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:31,173 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 01:03:31,173 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 242 treesize of output 232 [2022-02-11 01:03:38,431 INFO L353 Elim1Store]: treesize reduction 24, result has 75.3 percent of original size [2022-02-11 01:03:38,432 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 801 treesize of output 635 [2022-02-11 01:03:40,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:40,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:40,546 INFO L353 Elim1Store]: treesize reduction 22, result has 71.4 percent of original size [2022-02-11 01:03:40,546 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 215 treesize of output 197 [2022-02-11 01:03:40,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:40,966 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:40,974 INFO L353 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2022-02-11 01:03:40,975 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 222 treesize of output 1 [2022-02-11 01:03:40,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:40,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:41,001 INFO L353 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2022-02-11 01:03:41,002 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 772 treesize of output 1 [2022-02-11 01:03:41,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:41,074 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:03:41,074 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 1 [2022-02-11 01:03:41,134 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:41,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068597865] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:41,134 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:41,135 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 25 [2022-02-11 01:03:41,135 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451805131] [2022-02-11 01:03:41,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:41,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:03:41,135 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:41,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:03:41,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:03:41,136 INFO L87 Difference]: Start difference. First operand 4591 states and 17187 transitions. Second operand has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:42,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:42,693 INFO L93 Difference]: Finished difference Result 7254 states and 26374 transitions. [2022-02-11 01:03:42,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-11 01:03:42,694 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:03:42,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:42,710 INFO L225 Difference]: With dead ends: 7254 [2022-02-11 01:03:42,710 INFO L226 Difference]: Without dead ends: 7141 [2022-02-11 01:03:42,711 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2022-02-11 01:03:42,711 INFO L934 BasicCegarLoop]: 32 mSDtfsCounter, 196 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:42,711 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 203 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1137 Invalid, 0 Unknown, 111 Unchecked, 1.0s Time] [2022-02-11 01:03:42,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7141 states. [2022-02-11 01:03:42,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7141 to 4923. [2022-02-11 01:03:42,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4923 states, 4922 states have (on average 3.7230800487606666) internal successors, (18325), 4922 states have internal predecessors, (18325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:42,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4923 states to 4923 states and 18325 transitions. [2022-02-11 01:03:42,810 INFO L78 Accepts]: Start accepts. Automaton has 4923 states and 18325 transitions. Word has length 33 [2022-02-11 01:03:42,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:42,810 INFO L470 AbstractCegarLoop]: Abstraction has 4923 states and 18325 transitions. [2022-02-11 01:03:42,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:42,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4923 states and 18325 transitions. [2022-02-11 01:03:42,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:03:42,820 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:42,820 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:42,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-11 01:03:43,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:43,034 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:43,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:43,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1674310878, now seen corresponding path program 15 times [2022-02-11 01:03:43,035 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:43,035 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240723328] [2022-02-11 01:03:43,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:43,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:44,409 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:44,409 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:44,409 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240723328] [2022-02-11 01:03:44,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240723328] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:44,409 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576712812] [2022-02-11 01:03:44,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:03:44,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:44,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:44,411 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) [2022-02-11 01:03:44,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-11 01:03:44,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 01:03:44,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:03:44,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-11 01:03:44,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:45,188 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-02-11 01:03:45,823 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 98 [2022-02-11 01:03:45,826 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 143 [2022-02-11 01:03:45,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 89 [2022-02-11 01:03:46,561 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:03:46,561 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 85 [2022-02-11 01:03:46,828 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:46,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:47,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:47,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:03:47,266 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 49 treesize of output 47 [2022-02-11 01:03:50,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:50,646 INFO L353 Elim1Store]: treesize reduction 19, result has 78.2 percent of original size [2022-02-11 01:03:50,647 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 353 treesize of output 284 [2022-02-11 01:03:52,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:52,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:52,448 INFO L353 Elim1Store]: treesize reduction 18, result has 76.6 percent of original size [2022-02-11 01:03:52,449 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 368 treesize of output 282 [2022-02-11 01:03:53,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:53,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:53,106 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:03:53,107 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 384 treesize of output 316 [2022-02-11 01:03:55,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:55,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:55,157 INFO L353 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2022-02-11 01:03:55,158 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 369 treesize of output 1 [2022-02-11 01:03:55,308 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-11 01:03:55,308 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 8 treesize of output 8 [2022-02-11 01:03:55,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:03:55,329 INFO L353 Elim1Store]: treesize reduction 15, result has 21.1 percent of original size [2022-02-11 01:03:55,329 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 45 [2022-02-11 01:03:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:55,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576712812] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:55,395 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:55,395 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 35 [2022-02-11 01:03:55,395 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330761736] [2022-02-11 01:03:55,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:55,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-11 01:03:55,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:55,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-11 01:03:55,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1073, Unknown=0, NotChecked=0, Total=1260 [2022-02-11 01:03:55,396 INFO L87 Difference]: Start difference. First operand 4923 states and 18325 transitions. Second operand has 36 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 35 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) [2022-02-11 01:03:58,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:58,207 INFO L93 Difference]: Finished difference Result 8921 states and 31447 transitions. [2022-02-11 01:03:58,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 01:03:58,217 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 35 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 33 [2022-02-11 01:03:58,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:58,237 INFO L225 Difference]: With dead ends: 8921 [2022-02-11 01:03:58,237 INFO L226 Difference]: Without dead ends: 8826 [2022-02-11 01:03:58,238 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 58 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=605, Invalid=3301, Unknown=0, NotChecked=0, Total=3906 [2022-02-11 01:03:58,238 INFO L934 BasicCegarLoop]: 26 mSDtfsCounter, 418 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 619 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:58,239 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 259 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1027 Invalid, 0 Unknown, 619 Unchecked, 0.9s Time] [2022-02-11 01:03:58,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8826 states. [2022-02-11 01:03:58,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8826 to 5122. [2022-02-11 01:03:58,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5122 states, 5121 states have (on average 3.7094317516110134) internal successors, (18996), 5121 states have internal predecessors, (18996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:58,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5122 states to 5122 states and 18996 transitions. [2022-02-11 01:03:58,362 INFO L78 Accepts]: Start accepts. Automaton has 5122 states and 18996 transitions. Word has length 33 [2022-02-11 01:03:58,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:58,362 INFO L470 AbstractCegarLoop]: Abstraction has 5122 states and 18996 transitions. [2022-02-11 01:03:58,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 35 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) [2022-02-11 01:03:58,362 INFO L276 IsEmpty]: Start isEmpty. Operand 5122 states and 18996 transitions. [2022-02-11 01:03:58,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:03:58,373 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:58,373 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:58,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-11 01:03:58,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:58,585 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:03:58,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:58,586 INFO L85 PathProgramCache]: Analyzing trace with hash -760414318, now seen corresponding path program 16 times [2022-02-11 01:03:58,586 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:58,586 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707953025] [2022-02-11 01:03:58,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:58,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:59,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:59,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707953025] [2022-02-11 01:03:59,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707953025] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:59,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046231515] [2022-02-11 01:03:59,897 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:03:59,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:59,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:59,898 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) [2022-02-11 01:03:59,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-11 01:03:59,929 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:03:59,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:03:59,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-11 01:03:59,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:04:00,692 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2022-02-11 01:04:01,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:04:01,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:04:01,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:01,292 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 120 treesize of output 78 [2022-02-11 01:04:01,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:04:01,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:04:01,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:01,297 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 193 treesize of output 137 [2022-02-11 01:04:01,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:04:01,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 76 [2022-02-11 01:04:01,696 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 48 [2022-02-11 01:04:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:01,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:04:01,949 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 01:04:01,950 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 204 treesize of output 194 [2022-02-11 01:04:10,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:10,467 INFO L353 Elim1Store]: treesize reduction 19, result has 78.2 percent of original size [2022-02-11 01:04:10,467 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 361 treesize of output 306 [2022-02-11 01:04:11,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:11,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:11,496 INFO L353 Elim1Store]: treesize reduction 18, result has 76.6 percent of original size [2022-02-11 01:04:11,496 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 375 treesize of output 303 [2022-02-11 01:04:11,821 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:11,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:11,875 INFO L353 Elim1Store]: treesize reduction 22, result has 71.4 percent of original size [2022-02-11 01:04:11,876 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 215 treesize of output 197 [2022-02-11 01:04:12,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:12,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:12,175 INFO L353 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2022-02-11 01:04:12,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 222 treesize of output 1 [2022-02-11 01:04:12,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:12,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:12,254 INFO L353 Elim1Store]: treesize reduction 9, result has 88.3 percent of original size [2022-02-11 01:04:12,254 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 215 treesize of output 210 [2022-02-11 01:04:12,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:12,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:12,813 INFO L353 Elim1Store]: treesize reduction 46, result has 40.3 percent of original size [2022-02-11 01:04:12,813 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 222 treesize of output 176 [2022-02-11 01:04:12,919 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:12,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:12,978 INFO L353 Elim1Store]: treesize reduction 9, result has 88.3 percent of original size [2022-02-11 01:04:12,978 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 379 treesize of output 324 [2022-02-11 01:04:15,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:15,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:15,198 INFO L353 Elim1Store]: treesize reduction 18, result has 76.6 percent of original size [2022-02-11 01:04:15,198 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 393 treesize of output 321 [2022-02-11 01:04:15,750 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-11 01:04:15,751 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 8 treesize of output 8 [2022-02-11 01:04:15,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:15,770 INFO L353 Elim1Store]: treesize reduction 15, result has 21.1 percent of original size [2022-02-11 01:04:15,770 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 45 [2022-02-11 01:04:15,830 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:15,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046231515] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:04:15,831 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:04:15,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 26 [2022-02-11 01:04:15,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678217377] [2022-02-11 01:04:15,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:04:15,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:04:15,831 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:04:15,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:04:15,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:04:15,832 INFO L87 Difference]: Start difference. First operand 5122 states and 18996 transitions. Second operand has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:17,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:04:17,309 INFO L93 Difference]: Finished difference Result 7452 states and 27062 transitions. [2022-02-11 01:04:17,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-11 01:04:17,309 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:04:17,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:04:17,325 INFO L225 Difference]: With dead ends: 7452 [2022-02-11 01:04:17,325 INFO L226 Difference]: Without dead ends: 7303 [2022-02-11 01:04:17,326 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=193, Invalid=863, Unknown=0, NotChecked=0, Total=1056 [2022-02-11 01:04:17,326 INFO L934 BasicCegarLoop]: 32 mSDtfsCounter, 169 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:04:17,326 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 241 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1224 Invalid, 0 Unknown, 121 Unchecked, 1.0s Time] [2022-02-11 01:04:17,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7303 states. [2022-02-11 01:04:17,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7303 to 4959. [2022-02-11 01:04:17,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4959 states, 4958 states have (on average 3.721460266236386) internal successors, (18451), 4958 states have internal predecessors, (18451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:17,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4959 states to 4959 states and 18451 transitions. [2022-02-11 01:04:17,426 INFO L78 Accepts]: Start accepts. Automaton has 4959 states and 18451 transitions. Word has length 33 [2022-02-11 01:04:17,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:04:17,426 INFO L470 AbstractCegarLoop]: Abstraction has 4959 states and 18451 transitions. [2022-02-11 01:04:17,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:17,427 INFO L276 IsEmpty]: Start isEmpty. Operand 4959 states and 18451 transitions. [2022-02-11 01:04:17,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:04:17,436 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:04:17,436 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:04:17,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-11 01:04:17,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:04:17,655 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:04:17,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:04:17,656 INFO L85 PathProgramCache]: Analyzing trace with hash -720009752, now seen corresponding path program 17 times [2022-02-11 01:04:17,656 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:04:17,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330630981] [2022-02-11 01:04:17,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:04:17,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:04:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:04:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 01:04:17,682 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:04:17,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330630981] [2022-02-11 01:04:17,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330630981] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:04:17,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496708116] [2022-02-11 01:04:17,682 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:04:17,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:04:17,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:04:17,683 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) [2022-02-11 01:04:17,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-11 01:04:17,715 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 01:04:17,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:04:17,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-11 01:04:17,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:04:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-11 01:04:17,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:04:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-11 01:04:17,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496708116] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:04:17,802 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:04:17,802 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-02-11 01:04:17,802 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823571631] [2022-02-11 01:04:17,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:04:17,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 01:04:17,802 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:04:17,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 01:04:17,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-11 01:04:17,803 INFO L87 Difference]: Start difference. First operand 4959 states and 18451 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:17,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:04:17,880 INFO L93 Difference]: Finished difference Result 7219 states and 26022 transitions. [2022-02-11 01:04:17,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 01:04:17,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:04:17,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:04:17,896 INFO L225 Difference]: With dead ends: 7219 [2022-02-11 01:04:17,897 INFO L226 Difference]: Without dead ends: 7001 [2022-02-11 01:04:17,897 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-11 01:04:17,897 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 61 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:04:17,897 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 45 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 01:04:17,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7001 states. [2022-02-11 01:04:17,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7001 to 6117. [2022-02-11 01:04:17,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6117 states, 6116 states have (on average 3.589764551994768) internal successors, (21955), 6116 states have internal predecessors, (21955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:18,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6117 states to 6117 states and 21955 transitions. [2022-02-11 01:04:18,000 INFO L78 Accepts]: Start accepts. Automaton has 6117 states and 21955 transitions. Word has length 33 [2022-02-11 01:04:18,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:04:18,001 INFO L470 AbstractCegarLoop]: Abstraction has 6117 states and 21955 transitions. [2022-02-11 01:04:18,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 6117 states and 21955 transitions. [2022-02-11 01:04:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:04:18,012 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:04:18,012 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:04:18,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-11 01:04:18,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:04:18,226 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:04:18,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:04:18,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1696023130, now seen corresponding path program 18 times [2022-02-11 01:04:18,226 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:04:18,227 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956507298] [2022-02-11 01:04:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:04:18,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:04:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:04:18,969 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:18,970 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:04:18,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956507298] [2022-02-11 01:04:18,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956507298] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:04:18,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100091903] [2022-02-11 01:04:18,970 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:04:18,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:04:18,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:04:18,971 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) [2022-02-11 01:04:18,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-11 01:04:19,003 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 01:04:19,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:04:19,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 01:04:19,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:04:19,298 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-02-11 01:04:19,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:04:19,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:04:19,922 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:19,923 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 122 treesize of output 74 [2022-02-11 01:04:19,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:04:19,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:04:19,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:19,928 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 175 treesize of output 117 [2022-02-11 01:04:19,931 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 61 [2022-02-11 01:04:20,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 71 [2022-02-11 01:04:20,554 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:20,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:04:21,063 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 210 treesize of output 206 [2022-02-11 01:04:21,116 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 194 treesize of output 190 [2022-02-11 01:04:21,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:21,157 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 50 treesize of output 46 [2022-02-11 01:04:21,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:21,170 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 46 treesize of output 42 [2022-02-11 01:04:21,198 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 226 treesize of output 218 [2022-02-11 01:04:21,344 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 210 treesize of output 202 [2022-02-11 01:04:21,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:21,444 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 28 treesize of output 26 [2022-02-11 01:04:21,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:21,466 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 32 treesize of output 30 [2022-02-11 01:04:29,871 INFO L353 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2022-02-11 01:04:29,872 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 131 treesize of output 103 [2022-02-11 01:04:29,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:29,889 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:04:29,889 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 30 [2022-02-11 01:04:29,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:29,912 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:04:29,912 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 1 [2022-02-11 01:04:29,922 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:29,926 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:04:29,926 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 160 treesize of output 1 [2022-02-11 01:04:29,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:29,957 INFO L353 Elim1Store]: treesize reduction 15, result has 66.7 percent of original size [2022-02-11 01:04:29,957 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 160 treesize of output 145 [2022-02-11 01:04:29,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:30,000 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:04:30,000 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 161 treesize of output 1 [2022-02-11 01:04:30,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:30,036 INFO L353 Elim1Store]: treesize reduction 19, result has 62.7 percent of original size [2022-02-11 01:04:30,036 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 95 treesize of output 94 [2022-02-11 01:04:30,054 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:30,061 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:04:30,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 1 [2022-02-11 01:04:30,066 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:30,071 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:04:30,072 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 96 treesize of output 1 [2022-02-11 01:04:30,078 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:30,105 INFO L353 Elim1Store]: treesize reduction 19, result has 62.7 percent of original size [2022-02-11 01:04:30,105 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 90 [2022-02-11 01:04:30,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:30,130 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:04:30,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 80 treesize of output 1 [2022-02-11 01:04:30,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:30,142 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:04:30,142 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 92 treesize of output 1 [2022-02-11 01:04:30,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:30,155 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:04:30,155 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 1 [2022-02-11 01:04:30,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:30,166 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:04:30,166 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 60 treesize of output 1 [2022-02-11 01:04:30,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:30,176 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:04:30,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 1 [2022-02-11 01:04:30,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:30,188 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:04:30,188 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 1 [2022-02-11 01:04:30,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:30,199 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:04:30,199 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 45 treesize of output 1 [2022-02-11 01:04:30,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:30,220 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:04:30,220 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 1 [2022-02-11 01:04:30,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:30,232 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:04:30,232 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 123 treesize of output 1 [2022-02-11 01:04:30,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:30,248 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:04:30,249 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 123 treesize of output 1 [2022-02-11 01:04:30,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:30,348 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:04:30,348 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 1 [2022-02-11 01:04:30,393 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:30,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100091903] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:04:30,393 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:04:30,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 25 [2022-02-11 01:04:30,394 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085705162] [2022-02-11 01:04:30,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:04:30,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:04:30,394 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:04:30,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:04:30,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:04:30,395 INFO L87 Difference]: Start difference. First operand 6117 states and 21955 transitions. Second operand has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:34,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:04:34,781 INFO L93 Difference]: Finished difference Result 11827 states and 40882 transitions. [2022-02-11 01:04:34,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-11 01:04:34,782 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:04:34,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:04:34,808 INFO L225 Difference]: With dead ends: 11827 [2022-02-11 01:04:34,808 INFO L226 Difference]: Without dead ends: 11630 [2022-02-11 01:04:34,808 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=331, Invalid=1831, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 01:04:34,809 INFO L934 BasicCegarLoop]: 30 mSDtfsCounter, 332 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:04:34,809 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 240 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-11 01:04:34,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11630 states. [2022-02-11 01:04:34,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11630 to 6781. [2022-02-11 01:04:34,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6781 states, 6780 states have (on average 3.5793510324483777) internal successors, (24268), 6780 states have internal predecessors, (24268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:34,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6781 states to 6781 states and 24268 transitions. [2022-02-11 01:04:34,956 INFO L78 Accepts]: Start accepts. Automaton has 6781 states and 24268 transitions. Word has length 33 [2022-02-11 01:04:34,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:04:34,956 INFO L470 AbstractCegarLoop]: Abstraction has 6781 states and 24268 transitions. [2022-02-11 01:04:34,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:34,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6781 states and 24268 transitions. [2022-02-11 01:04:34,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:04:34,969 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:04:34,969 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:04:34,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-11 01:04:35,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:04:35,170 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:04:35,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:04:35,170 INFO L85 PathProgramCache]: Analyzing trace with hash -499710688, now seen corresponding path program 19 times [2022-02-11 01:04:35,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:04:35,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118487228] [2022-02-11 01:04:35,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:04:35,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:04:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:04:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:36,029 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:04:36,029 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118487228] [2022-02-11 01:04:36,029 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118487228] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:04:36,029 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716652103] [2022-02-11 01:04:36,029 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:04:36,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:04:36,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:04:36,030 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) [2022-02-11 01:04:36,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-11 01:04:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:04:36,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-11 01:04:36,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:04:36,386 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2022-02-11 01:04:37,272 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 72 [2022-02-11 01:04:37,280 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 115 [2022-02-11 01:04:37,284 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:37,284 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 70 [2022-02-11 01:04:37,692 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 48 [2022-02-11 01:04:37,717 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:37,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:04:38,473 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 01:04:38,474 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 986 treesize of output 946 [2022-02-11 01:04:46,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:46,733 INFO L353 Elim1Store]: treesize reduction 19, result has 62.7 percent of original size [2022-02-11 01:04:46,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 67 [2022-02-11 01:04:46,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:46,797 INFO L353 Elim1Store]: treesize reduction 33, result has 35.3 percent of original size [2022-02-11 01:04:46,797 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 52 [2022-02-11 01:04:46,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:46,836 INFO L353 Elim1Store]: treesize reduction 14, result has 72.5 percent of original size [2022-02-11 01:04:46,836 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 95 treesize of output 99 [2022-02-11 01:04:46,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:46,943 INFO L353 Elim1Store]: treesize reduction 15, result has 66.7 percent of original size [2022-02-11 01:04:46,943 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 80 treesize of output 85 [2022-02-11 01:04:47,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:47,021 INFO L353 Elim1Store]: treesize reduction 37, result has 17.8 percent of original size [2022-02-11 01:04:47,022 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 39 [2022-02-11 01:04:47,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:47,050 INFO L353 Elim1Store]: treesize reduction 29, result has 35.6 percent of original size [2022-02-11 01:04:47,050 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 45 treesize of output 46 [2022-02-11 01:04:47,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:47,082 INFO L353 Elim1Store]: treesize reduction 29, result has 35.6 percent of original size [2022-02-11 01:04:47,082 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 79 treesize of output 70 [2022-02-11 01:04:47,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:47,096 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:04:47,096 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 31 [2022-02-11 01:04:47,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:47,115 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:04:47,115 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 55 [2022-02-11 01:04:47,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:47,132 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:04:47,132 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 96 treesize of output 1 [2022-02-11 01:04:47,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:47,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:47,173 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:04:47,173 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 467 treesize of output 403 [2022-02-11 01:04:48,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:48,372 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:04:48,373 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 1 [2022-02-11 01:04:48,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:48,390 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:04:48,390 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 1 [2022-02-11 01:04:48,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:48,407 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:04:48,407 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 76 treesize of output 1 [2022-02-11 01:04:48,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:48,424 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:04:48,424 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 75 treesize of output 1 [2022-02-11 01:04:48,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:48,450 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:04:48,450 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 1 [2022-02-11 01:04:48,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:48,465 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:04:48,465 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 1 [2022-02-11 01:04:48,481 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-02-11 01:04:48,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:48,496 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:04:48,497 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 1 [2022-02-11 01:04:48,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:48,527 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:04:48,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 1 [2022-02-11 01:04:48,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:48,545 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:04:48,546 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 45 treesize of output 1 [2022-02-11 01:04:48,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:48,561 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:04:48,575 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 92 treesize of output 1 [2022-02-11 01:04:48,783 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:48,788 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:04:48,788 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 1 [2022-02-11 01:04:48,793 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:48,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:48,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:04:48,796 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:04:48,796 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 1 [2022-02-11 01:04:48,844 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:48,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716652103] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:04:48,845 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:04:48,845 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 26 [2022-02-11 01:04:48,845 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044416634] [2022-02-11 01:04:48,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:04:48,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:04:48,845 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:04:48,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:04:48,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:04:48,846 INFO L87 Difference]: Start difference. First operand 6781 states and 24268 transitions. Second operand has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:54,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:04:54,554 INFO L93 Difference]: Finished difference Result 10893 states and 37790 transitions. [2022-02-11 01:04:54,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-11 01:04:54,555 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:04:54,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:04:54,576 INFO L225 Difference]: With dead ends: 10893 [2022-02-11 01:04:54,576 INFO L226 Difference]: Without dead ends: 10760 [2022-02-11 01:04:54,577 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=318, Invalid=1574, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 01:04:54,577 INFO L934 BasicCegarLoop]: 30 mSDtfsCounter, 305 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 442 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 01:04:54,577 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 226 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 972 Invalid, 0 Unknown, 442 Unchecked, 0.9s Time] [2022-02-11 01:04:54,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10760 states. [2022-02-11 01:04:54,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10760 to 6830. [2022-02-11 01:04:54,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6830 states, 6829 states have (on average 3.571386733050227) internal successors, (24389), 6829 states have internal predecessors, (24389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:54,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6830 states to 6830 states and 24389 transitions. [2022-02-11 01:04:54,707 INFO L78 Accepts]: Start accepts. Automaton has 6830 states and 24389 transitions. Word has length 33 [2022-02-11 01:04:54,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:04:54,707 INFO L470 AbstractCegarLoop]: Abstraction has 6830 states and 24389 transitions. [2022-02-11 01:04:54,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:54,707 INFO L276 IsEmpty]: Start isEmpty. Operand 6830 states and 24389 transitions. [2022-02-11 01:04:54,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:04:54,719 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:04:54,719 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:04:54,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-11 01:04:54,920 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,SelfDestructingSolverStorable24 [2022-02-11 01:04:54,920 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:04:54,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:04:54,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1516881048, now seen corresponding path program 20 times [2022-02-11 01:04:54,921 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:04:54,921 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893413555] [2022-02-11 01:04:54,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:04:54,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:04:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:04:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:55,672 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:04:55,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893413555] [2022-02-11 01:04:55,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893413555] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:04:55,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673865030] [2022-02-11 01:04:55,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:04:55,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:04:55,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:04:55,673 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) [2022-02-11 01:04:55,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-11 01:04:55,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:04:55,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:04:55,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-11 01:04:55,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:04:55,977 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-02-11 01:04:56,661 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 72 [2022-02-11 01:04:56,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 123 [2022-02-11 01:04:56,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 74 [2022-02-11 01:04:57,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 48 [2022-02-11 01:04:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:57,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:04:57,763 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 01:04:57,764 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 1016 treesize of output 976 [2022-02-11 01:05:07,900 INFO L353 Elim1Store]: treesize reduction 29, result has 70.1 percent of original size [2022-02-11 01:05:07,901 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 1147 treesize of output 936 [2022-02-11 01:05:10,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:05:10,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:05:11,059 INFO L353 Elim1Store]: treesize reduction 18, result has 76.6 percent of original size [2022-02-11 01:05:11,059 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 1184 treesize of output 944 [2022-02-11 01:05:12,251 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:05:12,254 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:05:12,254 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 1 [2022-02-11 01:05:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:05:12,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673865030] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:05:12,299 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:05:12,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 26 [2022-02-11 01:05:12,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470078490] [2022-02-11 01:05:12,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:05:12,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:05:12,300 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:05:12,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:05:12,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:05:12,300 INFO L87 Difference]: Start difference. First operand 6830 states and 24389 transitions. Second operand has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 26 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) [2022-02-11 01:05:17,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:05:17,489 INFO L93 Difference]: Finished difference Result 10619 states and 36960 transitions. [2022-02-11 01:05:17,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-11 01:05:17,489 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 26 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 33 [2022-02-11 01:05:17,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:05:17,512 INFO L225 Difference]: With dead ends: 10619 [2022-02-11 01:05:17,512 INFO L226 Difference]: Without dead ends: 10574 [2022-02-11 01:05:17,513 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=298, Invalid=1508, Unknown=0, NotChecked=0, Total=1806 [2022-02-11 01:05:17,513 INFO L934 BasicCegarLoop]: 27 mSDtfsCounter, 259 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 256 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:05:17,513 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 183 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 891 Invalid, 0 Unknown, 256 Unchecked, 0.8s Time] [2022-02-11 01:05:17,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10574 states. [2022-02-11 01:05:17,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10574 to 6908. [2022-02-11 01:05:17,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6908 states, 6907 states have (on average 3.571738815694223) internal successors, (24670), 6907 states have internal predecessors, (24670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:05:17,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6908 states to 6908 states and 24670 transitions. [2022-02-11 01:05:17,682 INFO L78 Accepts]: Start accepts. Automaton has 6908 states and 24670 transitions. Word has length 33 [2022-02-11 01:05:17,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:05:17,682 INFO L470 AbstractCegarLoop]: Abstraction has 6908 states and 24670 transitions. [2022-02-11 01:05:17,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 26 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) [2022-02-11 01:05:17,682 INFO L276 IsEmpty]: Start isEmpty. Operand 6908 states and 24670 transitions. [2022-02-11 01:05:17,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:05:17,693 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:05:17,693 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:05:17,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-11 01:05:17,894 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,SelfDestructingSolverStorable25 [2022-02-11 01:05:17,894 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:05:17,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:05:17,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1488917818, now seen corresponding path program 21 times [2022-02-11 01:05:17,895 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:05:17,895 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974919841] [2022-02-11 01:05:17,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:05:17,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:05:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:05:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:05:18,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:05:18,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974919841] [2022-02-11 01:05:18,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974919841] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:05:18,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643645971] [2022-02-11 01:05:18,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:05:18,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:05:18,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:05:18,899 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) [2022-02-11 01:05:18,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-11 01:05:18,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 01:05:18,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:05:18,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 01:05:18,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:05:19,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-02-11 01:05:19,420 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-02-11 01:05:19,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-02-11 01:05:21,349 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:05:21,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 85 [2022-02-11 01:05:21,368 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:05:21,369 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 79 [2022-02-11 01:05:23,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:05:23,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:05:23,797 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 27 [2022-02-11 01:05:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:05:23,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:05:25,262 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 01:05:25,263 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 1338 treesize of output 1290 [2022-02-11 01:05:34,160 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-02-11 01:05:34,161 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 1136 treesize of output 890 [2022-02-11 01:05:40,358 INFO L353 Elim1Store]: treesize reduction 10, result has 65.5 percent of original size [2022-02-11 01:05:40,358 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 108 treesize of output 92 [2022-02-11 01:05:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:05:40,494 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643645971] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:05:40,494 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:05:40,494 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 36 [2022-02-11 01:05:40,494 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676297625] [2022-02-11 01:05:40,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:05:40,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-11 01:05:40,494 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:05:40,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-11 01:05:40,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1143, Unknown=1, NotChecked=0, Total=1332 [2022-02-11 01:05:40,495 INFO L87 Difference]: Start difference. First operand 6908 states and 24670 transitions. Second operand has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 36 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) [2022-02-11 01:05:48,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:05:48,089 INFO L93 Difference]: Finished difference Result 12158 states and 42002 transitions. [2022-02-11 01:05:48,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-11 01:05:48,089 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 36 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 33 [2022-02-11 01:05:48,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:05:48,115 INFO L225 Difference]: With dead ends: 12158 [2022-02-11 01:05:48,115 INFO L226 Difference]: Without dead ends: 12155 [2022-02-11 01:05:48,116 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 45 SyntacticMatches, 9 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1555 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=745, Invalid=3809, Unknown=2, NotChecked=0, Total=4556 [2022-02-11 01:05:48,117 INFO L934 BasicCegarLoop]: 30 mSDtfsCounter, 363 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1356 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:05:48,117 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 326 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 820 Invalid, 0 Unknown, 1356 Unchecked, 0.7s Time] [2022-02-11 01:05:48,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12155 states. [2022-02-11 01:05:48,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12155 to 7149. [2022-02-11 01:05:48,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7149 states, 7148 states have (on average 3.5693900391717963) internal successors, (25514), 7148 states have internal predecessors, (25514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:05:48,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7149 states to 7149 states and 25514 transitions. [2022-02-11 01:05:48,292 INFO L78 Accepts]: Start accepts. Automaton has 7149 states and 25514 transitions. Word has length 33 [2022-02-11 01:05:48,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:05:48,292 INFO L470 AbstractCegarLoop]: Abstraction has 7149 states and 25514 transitions. [2022-02-11 01:05:48,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 36 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) [2022-02-11 01:05:48,292 INFO L276 IsEmpty]: Start isEmpty. Operand 7149 states and 25514 transitions. [2022-02-11 01:05:48,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:05:48,304 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:05:48,304 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:05:48,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-02-11 01:05:48,511 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,SelfDestructingSolverStorable26 [2022-02-11 01:05:48,511 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:05:48,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:05:48,511 INFO L85 PathProgramCache]: Analyzing trace with hash -525933754, now seen corresponding path program 22 times [2022-02-11 01:05:48,512 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:05:48,512 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180456489] [2022-02-11 01:05:48,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:05:48,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:05:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:05:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:05:49,556 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:05:49,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180456489] [2022-02-11 01:05:49,556 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180456489] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:05:49,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875312107] [2022-02-11 01:05:49,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:05:49,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:05:49,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:05:49,557 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) [2022-02-11 01:05:49,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-11 01:05:49,588 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:05:49,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:05:49,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-11 01:05:49,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:05:49,864 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-11 01:05:49,991 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-02-11 01:05:50,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:05:50,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:05:50,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:05:50,076 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 97 treesize of output 65 [2022-02-11 01:05:50,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:05:50,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:05:50,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:05:50,081 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 114 treesize of output 78 [2022-02-11 01:05:50,310 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2022-02-11 01:05:50,328 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:05:50,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:05:50,833 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 01:05:50,834 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 1658 treesize of output 1610 [2022-02-11 01:05:57,542 INFO L353 Elim1Store]: treesize reduction 24, result has 75.3 percent of original size [2022-02-11 01:05:57,543 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 746 treesize of output 610 [2022-02-11 01:06:00,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:06:00,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:06:00,158 INFO L353 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2022-02-11 01:06:00,158 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 701 treesize of output 1 [2022-02-11 01:06:00,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:06:00,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:06:00,179 INFO L353 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2022-02-11 01:06:00,179 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 384 treesize of output 1 [2022-02-11 01:06:00,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:06:00,258 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:06:00,258 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 1 [2022-02-11 01:06:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:06:00,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875312107] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:06:00,309 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:06:00,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 25 [2022-02-11 01:06:00,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885297065] [2022-02-11 01:06:00,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:06:00,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 01:06:00,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:06:00,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 01:06:00,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2022-02-11 01:06:00,310 INFO L87 Difference]: Start difference. First operand 7149 states and 25514 transitions. Second operand has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 25 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) [2022-02-11 01:06:07,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:06:07,465 INFO L93 Difference]: Finished difference Result 14361 states and 49417 transitions. [2022-02-11 01:06:07,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-11 01:06:07,466 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 25 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 33 [2022-02-11 01:06:07,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:06:07,495 INFO L225 Difference]: With dead ends: 14361 [2022-02-11 01:06:07,495 INFO L226 Difference]: Without dead ends: 14238 [2022-02-11 01:06:07,496 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=465, Invalid=2727, Unknown=0, NotChecked=0, Total=3192 [2022-02-11 01:06:07,496 INFO L934 BasicCegarLoop]: 31 mSDtfsCounter, 370 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:06:07,496 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 318 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1904 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-11 01:06:07,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14238 states. [2022-02-11 01:06:07,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14238 to 7030. [2022-02-11 01:06:07,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7030 states, 7029 states have (on average 3.5757575757575757) internal successors, (25134), 7029 states have internal predecessors, (25134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:06:07,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7030 states to 7030 states and 25134 transitions. [2022-02-11 01:06:07,654 INFO L78 Accepts]: Start accepts. Automaton has 7030 states and 25134 transitions. Word has length 33 [2022-02-11 01:06:07,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:06:07,654 INFO L470 AbstractCegarLoop]: Abstraction has 7030 states and 25134 transitions. [2022-02-11 01:06:07,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 25 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) [2022-02-11 01:06:07,654 INFO L276 IsEmpty]: Start isEmpty. Operand 7030 states and 25134 transitions. [2022-02-11 01:06:07,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:06:07,665 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:06:07,665 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:06:07,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-02-11 01:06:07,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:06:07,866 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:06:07,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:06:07,866 INFO L85 PathProgramCache]: Analyzing trace with hash -817784198, now seen corresponding path program 23 times [2022-02-11 01:06:07,866 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:06:07,866 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752670687] [2022-02-11 01:06:07,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:06:07,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:06:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:06:08,803 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:06:08,803 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:06:08,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752670687] [2022-02-11 01:06:08,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752670687] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:06:08,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590702876] [2022-02-11 01:06:08,803 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:06:08,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:06:08,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:06:08,805 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) [2022-02-11 01:06:08,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-11 01:06:08,839 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 01:06:08,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:06:08,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 01:06:08,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:06:09,148 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2022-02-11 01:06:09,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:06:09,261 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-02-11 01:06:09,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:06:09,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:06:09,625 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:06:09,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 96 treesize of output 114 [2022-02-11 01:06:09,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:06:09,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:06:09,652 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:06:09,652 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 119 treesize of output 133 [2022-02-11 01:06:12,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:06:12,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:06:12,892 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 39 treesize of output 27 [2022-02-11 01:06:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:06:12,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:06:14,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:06:14,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:06:14,351 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 591 treesize of output 567 [2022-02-11 01:06:22,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:06:22,967 INFO L353 Elim1Store]: treesize reduction 19, result has 78.2 percent of original size [2022-02-11 01:06:22,967 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 1163 treesize of output 878 [2022-02-11 01:06:28,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:06:28,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:06:28,532 INFO L353 Elim1Store]: treesize reduction 18, result has 76.6 percent of original size [2022-02-11 01:06:28,532 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 1208 treesize of output 890 [2022-02-11 01:06:30,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:06:30,212 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:06:30,212 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 1 [2022-02-11 01:06:30,278 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:06:30,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590702876] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:06:30,278 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:06:30,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 32 [2022-02-11 01:06:30,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467452864] [2022-02-11 01:06:30,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:06:30,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-11 01:06:30,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:06:30,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-11 01:06:30,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=893, Unknown=2, NotChecked=0, Total=1056 [2022-02-11 01:06:30,279 INFO L87 Difference]: Start difference. First operand 7030 states and 25134 transitions. Second operand has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:06:35,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:06:35,896 INFO L93 Difference]: Finished difference Result 13514 states and 46459 transitions. [2022-02-11 01:06:35,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-11 01:06:35,896 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:06:35,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:06:35,932 INFO L225 Difference]: With dead ends: 13514 [2022-02-11 01:06:35,933 INFO L226 Difference]: Without dead ends: 13191 [2022-02-11 01:06:35,934 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2150 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=909, Invalid=6061, Unknown=2, NotChecked=0, Total=6972 [2022-02-11 01:06:35,935 INFO L934 BasicCegarLoop]: 48 mSDtfsCounter, 484 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 3418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2140 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 01:06:35,935 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 483 Invalid, 3418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1214 Invalid, 0 Unknown, 2140 Unchecked, 0.9s Time] [2022-02-11 01:06:35,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13191 states. [2022-02-11 01:06:36,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13191 to 7289. [2022-02-11 01:06:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7289 states, 7288 states have (on average 3.575192096597146) internal successors, (26056), 7288 states have internal predecessors, (26056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:06:36,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7289 states to 7289 states and 26056 transitions. [2022-02-11 01:06:36,171 INFO L78 Accepts]: Start accepts. Automaton has 7289 states and 26056 transitions. Word has length 33 [2022-02-11 01:06:36,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:06:36,171 INFO L470 AbstractCegarLoop]: Abstraction has 7289 states and 26056 transitions. [2022-02-11 01:06:36,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:06:36,171 INFO L276 IsEmpty]: Start isEmpty. Operand 7289 states and 26056 transitions. [2022-02-11 01:06:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:06:36,185 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:06:36,185 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:06:36,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-11 01:06:36,385 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,SelfDestructingSolverStorable28 [2022-02-11 01:06:36,386 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:06:36,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:06:36,387 INFO L85 PathProgramCache]: Analyzing trace with hash -784457146, now seen corresponding path program 24 times [2022-02-11 01:06:36,387 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:06:36,387 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150360557] [2022-02-11 01:06:36,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:06:36,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:06:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:06:36,942 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:06:36,942 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:06:36,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150360557] [2022-02-11 01:06:36,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150360557] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:06:36,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315455893] [2022-02-11 01:06:36,943 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:06:36,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:06:36,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:06:36,944 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) [2022-02-11 01:06:36,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-11 01:06:36,977 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 01:06:36,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:06:36,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-11 01:06:36,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:06:37,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-02-11 01:06:37,379 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-11 01:06:37,748 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2022-02-11 01:06:37,837 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 55 [2022-02-11 01:06:37,839 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 49 [2022-02-11 01:06:37,958 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:06:37,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:06:39,161 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 01:06:39,162 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 1434 treesize of output 1386 [2022-02-11 01:06:46,310 INFO L353 Elim1Store]: treesize reduction 29, result has 70.1 percent of original size [2022-02-11 01:06:46,311 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 1105 treesize of output 844 [2022-02-11 01:06:50,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:06:50,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:06:50,880 INFO L353 Elim1Store]: treesize reduction 18, result has 76.6 percent of original size [2022-02-11 01:06:50,881 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 1150 treesize of output 856 [2022-02-11 01:06:52,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:06:52,256 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:06:52,256 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 1 [2022-02-11 01:06:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:06:52,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315455893] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:06:52,302 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:06:52,302 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 27 [2022-02-11 01:06:52,302 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800104155] [2022-02-11 01:06:52,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:06:52,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-11 01:06:52,302 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:06:52,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-11 01:06:52,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2022-02-11 01:06:52,303 INFO L87 Difference]: Start difference. First operand 7289 states and 26056 transitions. Second operand has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:06:56,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:06:56,955 INFO L93 Difference]: Finished difference Result 14961 states and 51639 transitions. [2022-02-11 01:06:56,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-11 01:06:56,955 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:06:56,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:06:56,987 INFO L225 Difference]: With dead ends: 14961 [2022-02-11 01:06:56,987 INFO L226 Difference]: Without dead ends: 14779 [2022-02-11 01:06:56,988 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=498, Invalid=2472, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 01:06:56,989 INFO L934 BasicCegarLoop]: 29 mSDtfsCounter, 450 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:06:56,989 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 289 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1356 Invalid, 0 Unknown, 213 Unchecked, 1.2s Time] [2022-02-11 01:06:57,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14779 states. [2022-02-11 01:06:57,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14779 to 7443. [2022-02-11 01:06:57,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7443 states, 7442 states have (on average 3.5751142166084384) internal successors, (26606), 7442 states have internal predecessors, (26606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:06:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7443 states to 7443 states and 26606 transitions. [2022-02-11 01:06:57,152 INFO L78 Accepts]: Start accepts. Automaton has 7443 states and 26606 transitions. Word has length 33 [2022-02-11 01:06:57,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:06:57,152 INFO L470 AbstractCegarLoop]: Abstraction has 7443 states and 26606 transitions. [2022-02-11 01:06:57,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:06:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand 7443 states and 26606 transitions. [2022-02-11 01:06:57,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:06:57,163 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:06:57,163 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:06:57,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-11 01:06:57,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:06:57,363 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:06:57,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:06:57,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1206786738, now seen corresponding path program 25 times [2022-02-11 01:06:57,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:06:57,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647806147] [2022-02-11 01:06:57,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:06:57,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:06:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:06:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:06:58,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:06:58,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647806147] [2022-02-11 01:06:58,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647806147] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:06:58,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521959690] [2022-02-11 01:06:58,201 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:06:58,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:06:58,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:06:58,202 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) [2022-02-11 01:06:58,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-11 01:06:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:06:58,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 01:06:58,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:06:58,531 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-02-11 01:06:58,631 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-02-11 01:06:59,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 66 [2022-02-11 01:06:59,023 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 104 [2022-02-11 01:06:59,551 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 72 [2022-02-11 01:06:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:06:59,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:07:00,595 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 210 treesize of output 206 [2022-02-11 01:07:00,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:07:00,625 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 50 treesize of output 46 [2022-02-11 01:07:00,639 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 194 treesize of output 190 [2022-02-11 01:07:00,668 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:07:00,671 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 46 treesize of output 42 [2022-02-11 01:07:00,690 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 194 treesize of output 190 [2022-02-11 01:07:00,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:07:00,726 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 46 treesize of output 42 [2022-02-11 01:07:00,740 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 178 treesize of output 174 [2022-02-11 01:07:00,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:07:00,781 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 42 treesize of output 38 [2022-02-11 01:07:06,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:07:06,295 INFO L353 Elim1Store]: treesize reduction 14, result has 83.9 percent of original size [2022-02-11 01:07:06,296 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 455 treesize of output 373 [2022-02-11 01:07:07,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:07:07,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:07:07,773 INFO L353 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2022-02-11 01:07:07,774 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 433 treesize of output 1 [2022-02-11 01:07:07,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:07:07,785 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:07:07,818 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:07:07,819 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 471 treesize of output 393 [2022-02-11 01:07:09,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:07:09,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:07:09,225 INFO L353 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2022-02-11 01:07:09,225 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 449 treesize of output 1 [2022-02-11 01:07:09,342 INFO L353 Elim1Store]: treesize reduction 10, result has 65.5 percent of original size [2022-02-11 01:07:09,342 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 56 treesize of output 58 [2022-02-11 01:07:09,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:07:09,388 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:07:09,388 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 62 treesize of output 1 [2022-02-11 01:07:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:07:09,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521959690] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:07:09,432 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:07:09,432 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 26 [2022-02-11 01:07:09,432 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858442529] [2022-02-11 01:07:09,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:07:09,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:07:09,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:07:09,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:07:09,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:07:09,433 INFO L87 Difference]: Start difference. First operand 7443 states and 26606 transitions. Second operand has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:07:18,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:07:18,554 INFO L93 Difference]: Finished difference Result 16427 states and 56239 transitions. [2022-02-11 01:07:18,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-11 01:07:18,555 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:07:18,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:07:18,587 INFO L225 Difference]: With dead ends: 16427 [2022-02-11 01:07:18,587 INFO L226 Difference]: Without dead ends: 16209 [2022-02-11 01:07:18,588 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=549, Invalid=2991, Unknown=0, NotChecked=0, Total=3540 [2022-02-11 01:07:18,588 INFO L934 BasicCegarLoop]: 35 mSDtfsCounter, 365 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:07:18,588 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 394 Invalid, 2419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-11 01:07:18,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16209 states. [2022-02-11 01:07:18,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16209 to 7380. [2022-02-11 01:07:18,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7380 states, 7379 states have (on average 3.576636400596287) internal successors, (26392), 7379 states have internal predecessors, (26392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:07:18,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7380 states to 7380 states and 26392 transitions. [2022-02-11 01:07:18,765 INFO L78 Accepts]: Start accepts. Automaton has 7380 states and 26392 transitions. Word has length 33 [2022-02-11 01:07:18,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:07:18,765 INFO L470 AbstractCegarLoop]: Abstraction has 7380 states and 26392 transitions. [2022-02-11 01:07:18,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:07:18,765 INFO L276 IsEmpty]: Start isEmpty. Operand 7380 states and 26392 transitions. [2022-02-11 01:07:18,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:07:18,775 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:07:18,775 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:07:18,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-11 01:07:18,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-02-11 01:07:18,979 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:07:18,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:07:18,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1906539584, now seen corresponding path program 26 times [2022-02-11 01:07:18,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:07:18,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580717606] [2022-02-11 01:07:18,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:07:18,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:07:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:07:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:07:19,926 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:07:19,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580717606] [2022-02-11 01:07:19,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580717606] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:07:19,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875693639] [2022-02-11 01:07:19,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:07:19,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:07:19,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:07:19,927 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) [2022-02-11 01:07:19,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-11 01:07:19,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:07:19,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:07:19,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-11 01:07:19,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:07:20,261 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-02-11 01:07:21,018 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:07:21,018 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 99 [2022-02-11 01:07:21,034 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:07:21,035 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 194 treesize of output 166 [2022-02-11 01:07:21,047 INFO L353 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2022-02-11 01:07:21,048 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 88 [2022-02-11 01:07:22,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:07:22,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:07:22,874 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 84 treesize of output 58 [2022-02-11 01:07:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:07:22,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:07:23,993 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 01:07:23,993 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 1064 treesize of output 1024 [2022-02-11 01:07:45,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:07:45,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:07:45,345 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:07:45,346 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 2344 treesize of output 1775 [2022-02-11 01:07:59,574 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-11 01:07:59,575 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 8 treesize of output 8 [2022-02-11 01:07:59,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:07:59,590 INFO L353 Elim1Store]: treesize reduction 15, result has 21.1 percent of original size [2022-02-11 01:07:59,590 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 39 [2022-02-11 01:07:59,649 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:07:59,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875693639] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:07:59,650 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:07:59,650 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2022-02-11 01:07:59,650 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543094405] [2022-02-11 01:07:59,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:07:59,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:07:59,650 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:07:59,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:07:59,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=695, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:07:59,651 INFO L87 Difference]: Start difference. First operand 7380 states and 26392 transitions. Second operand has 30 states, 30 states have (on average 2.5) internal successors, (75), 29 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) [2022-02-11 01:08:04,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:08:04,531 INFO L93 Difference]: Finished difference Result 13090 states and 45370 transitions. [2022-02-11 01:08:04,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-11 01:08:04,531 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.5) internal successors, (75), 29 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 33 [2022-02-11 01:08:04,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:08:04,562 INFO L225 Difference]: With dead ends: 13090 [2022-02-11 01:08:04,562 INFO L226 Difference]: Without dead ends: 13012 [2022-02-11 01:08:04,563 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 60 SyntacticMatches, 8 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1342 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=884, Invalid=3276, Unknown=0, NotChecked=0, Total=4160 [2022-02-11 01:08:04,563 INFO L934 BasicCegarLoop]: 24 mSDtfsCounter, 355 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1484 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:08:04,564 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 208 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 945 Invalid, 0 Unknown, 1484 Unchecked, 0.7s Time] [2022-02-11 01:08:04,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13012 states. [2022-02-11 01:08:04,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13012 to 7739. [2022-02-11 01:08:04,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7739 states, 7738 states have (on average 3.5673300594468853) internal successors, (27604), 7738 states have internal predecessors, (27604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:08:04,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7739 states to 7739 states and 27604 transitions. [2022-02-11 01:08:04,732 INFO L78 Accepts]: Start accepts. Automaton has 7739 states and 27604 transitions. Word has length 33 [2022-02-11 01:08:04,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:08:04,732 INFO L470 AbstractCegarLoop]: Abstraction has 7739 states and 27604 transitions. [2022-02-11 01:08:04,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.5) internal successors, (75), 29 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) [2022-02-11 01:08:04,732 INFO L276 IsEmpty]: Start isEmpty. Operand 7739 states and 27604 transitions. [2022-02-11 01:08:04,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:08:04,744 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:08:04,744 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:08:04,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-11 01:08:04,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:08:04,951 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:08:04,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:08:04,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1089207312, now seen corresponding path program 27 times [2022-02-11 01:08:04,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:08:04,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845576316] [2022-02-11 01:08:04,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:08:04,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:08:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:08:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:08:05,616 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:08:05,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845576316] [2022-02-11 01:08:05,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845576316] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:08:05,616 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635195035] [2022-02-11 01:08:05,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:08:05,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:08:05,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:08:05,617 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) [2022-02-11 01:08:05,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-11 01:08:05,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 01:08:05,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:08:05,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-11 01:08:05,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:08:05,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-02-11 01:08:09,246 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:08:09,246 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 112 treesize of output 112 [2022-02-11 01:08:09,271 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:08:09,272 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 199 treesize of output 191 [2022-02-11 01:08:09,287 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-02-11 01:08:09,287 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 102 [2022-02-11 01:08:18,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:08:18,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:08:18,544 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-11 01:08:18,544 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 55 [2022-02-11 01:08:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:08:18,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:08:23,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:08:23,974 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 271 treesize of output 263 [2022-02-11 01:09:30,324 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:09:30,324 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 1676 treesize of output 1373 [2022-02-11 01:09:42,325 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:09:42,325 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 67 [2022-02-11 01:09:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:42,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635195035] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:42,469 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:42,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 35 [2022-02-11 01:09:42,469 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029358919] [2022-02-11 01:09:42,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:42,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-11 01:09:42,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:42,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-11 01:09:42,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1033, Unknown=0, NotChecked=0, Total=1260 [2022-02-11 01:09:42,470 INFO L87 Difference]: Start difference. First operand 7739 states and 27604 transitions. Second operand has 36 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 35 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) [2022-02-11 01:10:02,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:10:02,421 INFO L93 Difference]: Finished difference Result 16157 states and 55285 transitions. [2022-02-11 01:10:02,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-11 01:10:02,421 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 35 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 33 [2022-02-11 01:10:02,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:10:02,458 INFO L225 Difference]: With dead ends: 16157 [2022-02-11 01:10:02,458 INFO L226 Difference]: Without dead ends: 16048 [2022-02-11 01:10:02,460 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4575 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=2052, Invalid=11281, Unknown=7, NotChecked=0, Total=13340 [2022-02-11 01:10:02,461 INFO L934 BasicCegarLoop]: 30 mSDtfsCounter, 369 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 4445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3561 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:10:02,461 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 560 Invalid, 4445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 821 Invalid, 0 Unknown, 3561 Unchecked, 0.5s Time] [2022-02-11 01:10:02,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16048 states. [2022-02-11 01:10:02,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16048 to 7912. [2022-02-11 01:10:02,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7912 states, 7911 states have (on average 3.5628871192011125) internal successors, (28186), 7911 states have internal predecessors, (28186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:02,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7912 states to 7912 states and 28186 transitions. [2022-02-11 01:10:02,647 INFO L78 Accepts]: Start accepts. Automaton has 7912 states and 28186 transitions. Word has length 33 [2022-02-11 01:10:02,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:10:02,647 INFO L470 AbstractCegarLoop]: Abstraction has 7912 states and 28186 transitions. [2022-02-11 01:10:02,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.3055555555555554) internal successors, (83), 35 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) [2022-02-11 01:10:02,647 INFO L276 IsEmpty]: Start isEmpty. Operand 7912 states and 28186 transitions. [2022-02-11 01:10:02,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:10:02,660 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:10:02,660 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:10:02,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-11 01:10:02,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:02,871 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:10:02,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:10:02,872 INFO L85 PathProgramCache]: Analyzing trace with hash 530625556, now seen corresponding path program 28 times [2022-02-11 01:10:02,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:10:02,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191950315] [2022-02-11 01:10:02,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:10:02,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:10:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:10:04,631 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:04,631 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:10:04,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191950315] [2022-02-11 01:10:04,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191950315] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:10:04,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242051358] [2022-02-11 01:10:04,632 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:10:04,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:10:04,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:10:04,633 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) [2022-02-11 01:10:04,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-11 01:10:04,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:10:04,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:10:04,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-11 01:10:04,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:10:04,947 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2022-02-11 01:10:05,594 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 72 [2022-02-11 01:10:05,597 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 115 [2022-02-11 01:10:05,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:05,601 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 70 [2022-02-11 01:10:05,933 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 48 [2022-02-11 01:10:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:05,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:10:07,715 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 01:10:07,716 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 591 treesize of output 567 [2022-02-11 01:10:16,089 INFO L353 Elim1Store]: treesize reduction 29, result has 70.1 percent of original size [2022-02-11 01:10:16,089 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 1159 treesize of output 898 [2022-02-11 01:10:22,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:22,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:22,843 INFO L353 Elim1Store]: treesize reduction 18, result has 76.6 percent of original size [2022-02-11 01:10:22,844 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 1204 treesize of output 910 [2022-02-11 01:10:24,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:10:24,285 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:10:24,285 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 1 [2022-02-11 01:10:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:10:24,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242051358] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:10:24,339 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:10:24,339 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 27 [2022-02-11 01:10:24,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792798291] [2022-02-11 01:10:24,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:10:24,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-11 01:10:24,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:10:24,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-11 01:10:24,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-02-11 01:10:24,340 INFO L87 Difference]: Start difference. First operand 7912 states and 28186 transitions. Second operand has 28 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:10:45,993 WARN L228 SmtUtils]: Spent 21.24s on a formula simplification. DAG size of input: 212 DAG size of output: 146 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-11 01:11:03,345 WARN L228 SmtUtils]: Spent 17.21s on a formula simplification. DAG size of input: 207 DAG size of output: 142 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-11 01:11:11,886 WARN L228 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 74 DAG size of output: 51 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-11 01:11:16,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:11:16,469 INFO L93 Difference]: Finished difference Result 14448 states and 49660 transitions. [2022-02-11 01:11:16,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-11 01:11:16,469 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:11:16,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:11:16,499 INFO L225 Difference]: With dead ends: 14448 [2022-02-11 01:11:16,500 INFO L226 Difference]: Without dead ends: 14287 [2022-02-11 01:11:16,500 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 52.6s TimeCoverageRelationStatistics Valid=504, Invalid=2252, Unknown=0, NotChecked=0, Total=2756 [2022-02-11 01:11:16,500 INFO L934 BasicCegarLoop]: 26 mSDtfsCounter, 407 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 744 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:11:16,500 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 256 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 945 Invalid, 0 Unknown, 744 Unchecked, 0.8s Time] [2022-02-11 01:11:16,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14287 states. [2022-02-11 01:11:16,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14287 to 8193. [2022-02-11 01:11:16,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8193 states, 8192 states have (on average 3.55615234375) internal successors, (29132), 8192 states have internal predecessors, (29132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:16,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8193 states to 8193 states and 29132 transitions. [2022-02-11 01:11:16,679 INFO L78 Accepts]: Start accepts. Automaton has 8193 states and 29132 transitions. Word has length 33 [2022-02-11 01:11:16,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:11:16,679 INFO L470 AbstractCegarLoop]: Abstraction has 8193 states and 29132 transitions. [2022-02-11 01:11:16,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:11:16,679 INFO L276 IsEmpty]: Start isEmpty. Operand 8193 states and 29132 transitions. [2022-02-11 01:11:16,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:11:16,691 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:11:16,691 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:11:16,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-11 01:11:16,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:16,892 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:11:16,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:11:16,893 INFO L85 PathProgramCache]: Analyzing trace with hash 708038150, now seen corresponding path program 29 times [2022-02-11 01:11:16,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:11:16,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673640010] [2022-02-11 01:11:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:11:16,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:11:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:11:17,859 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:17,860 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:11:17,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673640010] [2022-02-11 01:11:17,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673640010] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:11:17,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467363983] [2022-02-11 01:11:17,860 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:11:17,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:11:17,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:11:17,861 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) [2022-02-11 01:11:17,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-11 01:11:17,894 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 01:11:17,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:11:17,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-11 01:11:17,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:11:18,188 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-11 01:11:18,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:18,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:18,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:18,785 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 120 treesize of output 76 [2022-02-11 01:11:18,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:18,791 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-02-11 01:11:18,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:18,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:18,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:18,797 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 126 treesize of output 72 [2022-02-11 01:11:19,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:11:19,068 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:19,069 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 27 [2022-02-11 01:11:19,102 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:11:19,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:11:20,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:11:20,702 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 474 treesize of output 450 [2022-02-11 01:11:40,846 INFO L353 Elim1Store]: treesize reduction 10, result has 88.8 percent of original size [2022-02-11 01:11:40,846 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 2112 treesize of output 1583 [2022-02-11 01:12:04,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:04,309 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:12:04,310 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 1 [2022-02-11 01:12:04,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:04,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:04,338 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 01:12:04,338 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2022-02-11 01:12:04,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:04,350 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:12:04,351 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 1 [2022-02-11 01:12:04,447 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:04,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467363983] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:12:04,447 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:12:04,447 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 28 [2022-02-11 01:12:04,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471930734] [2022-02-11 01:12:04,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:12:04,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-11 01:12:04,448 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:12:04,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-11 01:12:04,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2022-02-11 01:12:04,448 INFO L87 Difference]: Start difference. First operand 8193 states and 29132 transitions. Second operand has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 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) [2022-02-11 01:12:09,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:12:09,277 INFO L93 Difference]: Finished difference Result 13029 states and 45384 transitions. [2022-02-11 01:12:09,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-11 01:12:09,277 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 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 33 [2022-02-11 01:12:09,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:12:09,305 INFO L225 Difference]: With dead ends: 13029 [2022-02-11 01:12:09,305 INFO L226 Difference]: Without dead ends: 12976 [2022-02-11 01:12:09,306 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=477, Invalid=2278, Unknown=1, NotChecked=0, Total=2756 [2022-02-11 01:12:09,306 INFO L934 BasicCegarLoop]: 18 mSDtfsCounter, 228 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 926 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:12:09,306 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 160 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 601 Invalid, 0 Unknown, 926 Unchecked, 0.4s Time] [2022-02-11 01:12:09,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12976 states. [2022-02-11 01:12:09,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12976 to 8584. [2022-02-11 01:12:09,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8584 states, 8583 states have (on average 3.555866247232902) internal successors, (30520), 8583 states have internal predecessors, (30520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:09,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8584 states to 8584 states and 30520 transitions. [2022-02-11 01:12:09,510 INFO L78 Accepts]: Start accepts. Automaton has 8584 states and 30520 transitions. Word has length 33 [2022-02-11 01:12:09,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:12:09,510 INFO L470 AbstractCegarLoop]: Abstraction has 8584 states and 30520 transitions. [2022-02-11 01:12:09,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 28 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) [2022-02-11 01:12:09,510 INFO L276 IsEmpty]: Start isEmpty. Operand 8584 states and 30520 transitions. [2022-02-11 01:12:09,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:12:09,522 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:12:09,522 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:12:09,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-11 01:12:09,723 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,SelfDestructingSolverStorable34 [2022-02-11 01:12:09,723 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:12:09,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:12:09,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1070034656, now seen corresponding path program 30 times [2022-02-11 01:12:09,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:12:09,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893872490] [2022-02-11 01:12:09,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:12:09,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:12:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:12:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:10,495 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:12:10,495 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893872490] [2022-02-11 01:12:10,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893872490] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:12:10,495 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463344892] [2022-02-11 01:12:10,495 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:12:10,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:12:10,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:12:10,496 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) [2022-02-11 01:12:10,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-11 01:12:10,530 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 01:12:10,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:12:10,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-11 01:12:10,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:12:10,837 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-11 01:12:11,109 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2022-02-11 01:12:11,226 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 63 [2022-02-11 01:12:11,229 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 57 [2022-02-11 01:12:11,424 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2022-02-11 01:12:11,442 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:11,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:12:13,295 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 01:12:13,296 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 546 treesize of output 522 [2022-02-11 01:12:26,830 INFO L353 Elim1Store]: treesize reduction 24, result has 75.3 percent of original size [2022-02-11 01:12:26,831 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 2285 treesize of output 1647 [2022-02-11 01:12:39,548 INFO L353 Elim1Store]: treesize reduction 10, result has 65.5 percent of original size [2022-02-11 01:12:39,549 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 109 treesize of output 89 [2022-02-11 01:12:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:39,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463344892] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:12:39,659 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:12:39,660 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 30 [2022-02-11 01:12:39,660 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201602507] [2022-02-11 01:12:39,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:12:39,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-11 01:12:39,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:12:39,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-11 01:12:39,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2022-02-11 01:12:39,660 INFO L87 Difference]: Start difference. First operand 8584 states and 30520 transitions. Second operand has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 30 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:44,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:12:44,329 INFO L93 Difference]: Finished difference Result 15687 states and 54121 transitions. [2022-02-11 01:12:44,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-11 01:12:44,329 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 30 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:12:44,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:12:44,362 INFO L225 Difference]: With dead ends: 15687 [2022-02-11 01:12:44,363 INFO L226 Difference]: Without dead ends: 15527 [2022-02-11 01:12:44,363 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=432, Invalid=2430, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 01:12:44,363 INFO L934 BasicCegarLoop]: 29 mSDtfsCounter, 372 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 377 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:12:44,363 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 307 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1782 Invalid, 0 Unknown, 377 Unchecked, 1.6s Time] [2022-02-11 01:12:44,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15527 states. [2022-02-11 01:12:44,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15527 to 8618. [2022-02-11 01:12:44,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8618 states, 8617 states have (on average 3.5533248230242545) internal successors, (30619), 8617 states have internal predecessors, (30619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:44,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8618 states to 8618 states and 30619 transitions. [2022-02-11 01:12:44,541 INFO L78 Accepts]: Start accepts. Automaton has 8618 states and 30619 transitions. Word has length 33 [2022-02-11 01:12:44,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:12:44,541 INFO L470 AbstractCegarLoop]: Abstraction has 8618 states and 30619 transitions. [2022-02-11 01:12:44,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 30 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:12:44,541 INFO L276 IsEmpty]: Start isEmpty. Operand 8618 states and 30619 transitions. [2022-02-11 01:12:44,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:12:44,554 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:12:44,554 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:12:44,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-02-11 01:12:44,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-02-11 01:12:44,755 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:12:44,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:12:44,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2027262564, now seen corresponding path program 31 times [2022-02-11 01:12:44,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:12:44,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108294093] [2022-02-11 01:12:44,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:12:44,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:12:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:12:45,801 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:45,802 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:12:45,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108294093] [2022-02-11 01:12:45,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108294093] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:12:45,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846211578] [2022-02-11 01:12:45,802 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:12:45,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:12:45,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:12:45,803 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) [2022-02-11 01:12:45,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-11 01:12:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:12:45,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-11 01:12:45,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:12:46,078 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-11 01:12:46,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:46,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:46,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:46,607 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 115 treesize of output 79 [2022-02-11 01:12:46,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:46,613 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2022-02-11 01:12:46,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:46,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:12:46,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:46,617 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 181 treesize of output 129 [2022-02-11 01:12:47,040 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 46 [2022-02-11 01:12:47,069 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:12:47,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:12:48,019 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 01:12:48,019 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 626 treesize of output 602 [2022-02-11 01:12:55,326 INFO L353 Elim1Store]: treesize reduction 29, result has 70.1 percent of original size [2022-02-11 01:12:55,327 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 982 treesize of output 741 [2022-02-11 01:12:58,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:58,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:12:58,790 INFO L353 Elim1Store]: treesize reduction 18, result has 76.6 percent of original size [2022-02-11 01:12:58,791 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 1019 treesize of output 749 [2022-02-11 01:13:00,150 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:13:00,151 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 7 treesize of output 12 [2022-02-11 01:13:00,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:00,166 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:13:00,166 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 1 [2022-02-11 01:13:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:00,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846211578] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:13:00,215 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:13:00,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 26 [2022-02-11 01:13:00,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56070999] [2022-02-11 01:13:00,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:13:00,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 01:13:00,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:13:00,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 01:13:00,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2022-02-11 01:13:00,216 INFO L87 Difference]: Start difference. First operand 8618 states and 30619 transitions. Second operand has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:03,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:13:03,681 INFO L93 Difference]: Finished difference Result 15368 states and 53064 transitions. [2022-02-11 01:13:03,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-11 01:13:03,682 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:13:03,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:13:03,717 INFO L225 Difference]: With dead ends: 15368 [2022-02-11 01:13:03,717 INFO L226 Difference]: Without dead ends: 15019 [2022-02-11 01:13:03,717 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=314, Invalid=1326, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 01:13:03,718 INFO L934 BasicCegarLoop]: 19 mSDtfsCounter, 298 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:13:03,718 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 190 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-11 01:13:03,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15019 states. [2022-02-11 01:13:03,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15019 to 7835. [2022-02-11 01:13:03,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7835 states, 7834 states have (on average 3.5638243553740105) internal successors, (27919), 7834 states have internal predecessors, (27919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:03,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7835 states to 7835 states and 27919 transitions. [2022-02-11 01:13:03,889 INFO L78 Accepts]: Start accepts. Automaton has 7835 states and 27919 transitions. Word has length 33 [2022-02-11 01:13:03,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:13:03,889 INFO L470 AbstractCegarLoop]: Abstraction has 7835 states and 27919 transitions. [2022-02-11 01:13:03,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:03,889 INFO L276 IsEmpty]: Start isEmpty. Operand 7835 states and 27919 transitions. [2022-02-11 01:13:03,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:13:03,901 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:13:03,901 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:13:03,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-11 01:13:04,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:13:04,103 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:13:04,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:13:04,103 INFO L85 PathProgramCache]: Analyzing trace with hash 889067426, now seen corresponding path program 32 times [2022-02-11 01:13:04,103 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:13:04,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025092632] [2022-02-11 01:13:04,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:13:04,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:13:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:13:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:05,085 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:13:05,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025092632] [2022-02-11 01:13:05,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025092632] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:13:05,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620684853] [2022-02-11 01:13:05,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:13:05,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:13:05,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:13:05,086 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) [2022-02-11 01:13:05,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-11 01:13:05,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:13:05,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:13:05,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-11 01:13:05,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:13:05,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-02-11 01:13:05,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:05,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:05,985 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 66 [2022-02-11 01:13:06,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:06,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:06,013 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 101 [2022-02-11 01:13:06,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:13:06,018 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-02-11 01:13:06,293 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2022-02-11 01:13:06,310 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:06,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:13:15,884 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 01:13:15,885 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 9070 treesize of output 8830 [2022-02-11 01:13:35,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:35,953 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:13:35,954 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 80 treesize of output 100 [2022-02-11 01:13:36,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,177 INFO L353 Elim1Store]: treesize reduction 14, result has 72.5 percent of original size [2022-02-11 01:13:36,177 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 113 treesize of output 105 [2022-02-11 01:13:36,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,261 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:13:36,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 1 [2022-02-11 01:13:36,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,273 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:13:36,273 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 1 [2022-02-11 01:13:36,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,285 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:13:36,285 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 101 treesize of output 63 [2022-02-11 01:13:36,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,323 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:13:36,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 1 [2022-02-11 01:13:36,329 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,337 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:13:36,337 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 1 [2022-02-11 01:13:36,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,350 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:13:36,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 81 treesize of output 1 [2022-02-11 01:13:36,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,361 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:13:36,361 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 1 [2022-02-11 01:13:36,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,377 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:13:36,377 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 101 treesize of output 1 [2022-02-11 01:13:36,381 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-02-11 01:13:36,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,392 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:13:36,392 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 1 [2022-02-11 01:13:36,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,407 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:13:36,408 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 1 [2022-02-11 01:13:36,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,420 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:13:36,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 45 treesize of output 1 [2022-02-11 01:13:36,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,458 INFO L353 Elim1Store]: treesize reduction 19, result has 62.7 percent of original size [2022-02-11 01:13:36,458 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 67 [2022-02-11 01:13:36,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,516 INFO L353 Elim1Store]: treesize reduction 33, result has 35.3 percent of original size [2022-02-11 01:13:36,516 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 52 [2022-02-11 01:13:36,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,566 INFO L353 Elim1Store]: treesize reduction 10, result has 77.8 percent of original size [2022-02-11 01:13:36,567 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 105 treesize of output 101 [2022-02-11 01:13:36,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,693 INFO L353 Elim1Store]: treesize reduction 14, result has 72.5 percent of original size [2022-02-11 01:13:36,693 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 117 treesize of output 109 [2022-02-11 01:13:36,780 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,813 INFO L353 Elim1Store]: treesize reduction 19, result has 62.7 percent of original size [2022-02-11 01:13:36,813 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 100 treesize of output 99 [2022-02-11 01:13:36,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,865 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:13:36,865 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 80 treesize of output 1 [2022-02-11 01:13:36,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,879 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:13:36,879 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 67 [2022-02-11 01:13:36,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,934 INFO L353 Elim1Store]: treesize reduction 42, result has 17.6 percent of original size [2022-02-11 01:13:36,934 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 100 treesize of output 76 [2022-02-11 01:13:36,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,957 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:13:36,958 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 1 [2022-02-11 01:13:36,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,981 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:13:36,981 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 45 treesize of output 1 [2022-02-11 01:13:36,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:36,998 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:13:36,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 79 treesize of output 1 [2022-02-11 01:13:37,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:37,012 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:13:37,012 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 1 [2022-02-11 01:13:37,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:37,029 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:13:37,029 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 1 [2022-02-11 01:13:37,220 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-11 01:13:37,220 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 8 treesize of output 8 [2022-02-11 01:13:37,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:13:37,242 INFO L353 Elim1Store]: treesize reduction 15, result has 21.1 percent of original size [2022-02-11 01:13:37,242 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 45 [2022-02-11 01:13:37,320 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:37,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620684853] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:13:37,321 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:13:37,321 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 29 [2022-02-11 01:13:37,321 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180158935] [2022-02-11 01:13:37,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:13:37,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 01:13:37,322 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:13:37,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 01:13:37,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2022-02-11 01:13:37,322 INFO L87 Difference]: Start difference. First operand 7835 states and 27919 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) [2022-02-11 01:13:44,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:13:44,321 INFO L93 Difference]: Finished difference Result 12739 states and 42867 transitions. [2022-02-11 01:13:44,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-11 01:13:44,321 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 33 [2022-02-11 01:13:44,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:13:44,364 INFO L225 Difference]: With dead ends: 12739 [2022-02-11 01:13:44,364 INFO L226 Difference]: Without dead ends: 12678 [2022-02-11 01:13:44,364 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1349 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=621, Invalid=3801, Unknown=0, NotChecked=0, Total=4422 [2022-02-11 01:13:44,365 INFO L934 BasicCegarLoop]: 37 mSDtfsCounter, 344 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 2032 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 313 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-11 01:13:44,365 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 491 Invalid, 2419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2032 Invalid, 0 Unknown, 313 Unchecked, 1.9s Time] [2022-02-11 01:13:44,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12678 states. [2022-02-11 01:13:44,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12678 to 8170. [2022-02-11 01:13:44,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8170 states, 8169 states have (on average 3.5621251071122537) internal successors, (29099), 8169 states have internal predecessors, (29099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:13:44,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8170 states to 8170 states and 29099 transitions. [2022-02-11 01:13:44,508 INFO L78 Accepts]: Start accepts. Automaton has 8170 states and 29099 transitions. Word has length 33 [2022-02-11 01:13:44,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:13:44,509 INFO L470 AbstractCegarLoop]: Abstraction has 8170 states and 29099 transitions. [2022-02-11 01:13:44,509 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) [2022-02-11 01:13:44,509 INFO L276 IsEmpty]: Start isEmpty. Operand 8170 states and 29099 transitions. [2022-02-11 01:13:44,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:13:44,522 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:13:44,522 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:13:44,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-02-11 01:13:44,725 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,SelfDestructingSolverStorable37 [2022-02-11 01:13:44,725 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:13:44,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:13:44,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2085379868, now seen corresponding path program 33 times [2022-02-11 01:13:44,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:13:44,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021289102] [2022-02-11 01:13:44,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:13:44,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:13:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:13:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:45,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:13:45,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021289102] [2022-02-11 01:13:45,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021289102] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:13:45,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193723068] [2022-02-11 01:13:45,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:13:45,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:13:45,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:13:45,805 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) [2022-02-11 01:13:45,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-11 01:13:45,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 01:13:45,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:13:45,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-11 01:13:45,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:13:45,982 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-11 01:13:46,970 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 70 [2022-02-11 01:13:46,973 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 64 [2022-02-11 01:13:46,977 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-02-11 01:13:47,195 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2022-02-11 01:13:47,209 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:13:47,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:13:56,060 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 01:13:56,060 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 5218 treesize of output 5020 [2022-02-11 01:14:12,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,026 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:14:13,026 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 80 treesize of output 100 [2022-02-11 01:14:13,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,244 INFO L353 Elim1Store]: treesize reduction 41, result has 8.9 percent of original size [2022-02-11 01:14:13,245 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 36 [2022-02-11 01:14:13,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,254 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:14:13,254 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 30 [2022-02-11 01:14:13,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,265 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:14:13,265 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 1 [2022-02-11 01:14:13,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,301 INFO L353 Elim1Store]: treesize reduction 19, result has 62.7 percent of original size [2022-02-11 01:14:13,301 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 60 treesize of output 63 [2022-02-11 01:14:13,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,340 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:14:13,340 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 45 treesize of output 1 [2022-02-11 01:14:13,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,350 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:14:13,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 1 [2022-02-11 01:14:13,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,361 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:14:13,361 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 1 [2022-02-11 01:14:13,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,371 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:14:13,372 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 1 [2022-02-11 01:14:13,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,410 INFO L353 Elim1Store]: treesize reduction 19, result has 62.7 percent of original size [2022-02-11 01:14:13,410 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 90 [2022-02-11 01:14:13,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,482 INFO L353 Elim1Store]: treesize reduction 33, result has 35.3 percent of original size [2022-02-11 01:14:13,482 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 76 [2022-02-11 01:14:13,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,500 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:14:13,500 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 81 treesize of output 1 [2022-02-11 01:14:13,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,512 INFO L353 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-02-11 01:14:13,512 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 80 treesize of output 1 [2022-02-11 01:14:13,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,526 INFO L353 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-02-11 01:14:13,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 72 treesize of output 1 [2022-02-11 01:14:13,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,534 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 29 [2022-02-11 01:14:13,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,549 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:14:13,549 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 1 [2022-02-11 01:14:13,555 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,560 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:14:13,560 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 1 [2022-02-11 01:14:13,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:13,629 INFO L353 Elim1Store]: treesize reduction 9, result has 88.3 percent of original size [2022-02-11 01:14:13,629 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 595 treesize of output 472 [2022-02-11 01:14:15,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:15,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:15,831 INFO L353 Elim1Store]: treesize reduction 18, result has 76.6 percent of original size [2022-02-11 01:14:15,832 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 617 treesize of output 473 [2022-02-11 01:14:16,772 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-11 01:14:16,772 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 8 treesize of output 8 [2022-02-11 01:14:16,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:14:16,794 INFO L353 Elim1Store]: treesize reduction 15, result has 21.1 percent of original size [2022-02-11 01:14:16,794 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 45 [2022-02-11 01:14:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:14:16,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193723068] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:14:16,920 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:14:16,920 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 27 [2022-02-11 01:14:16,920 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885379820] [2022-02-11 01:14:16,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:14:16,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-11 01:14:16,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:14:16,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-11 01:14:16,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2022-02-11 01:14:16,921 INFO L87 Difference]: Start difference. First operand 8170 states and 29099 transitions. Second operand has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:14:28,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:14:28,619 INFO L93 Difference]: Finished difference Result 10847 states and 36919 transitions. [2022-02-11 01:14:28,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-11 01:14:28,620 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 01:14:28,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:14:28,641 INFO L225 Difference]: With dead ends: 10847 [2022-02-11 01:14:28,642 INFO L226 Difference]: Without dead ends: 10708 [2022-02-11 01:14:28,642 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1314 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=541, Invalid=4015, Unknown=0, NotChecked=0, Total=4556 [2022-02-11 01:14:28,642 INFO L934 BasicCegarLoop]: 33 mSDtfsCounter, 402 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 2627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 779 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:14:28,642 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 448 Invalid, 2627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1775 Invalid, 0 Unknown, 779 Unchecked, 1.8s Time] [2022-02-11 01:14:28,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10708 states. [2022-02-11 01:14:28,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10708 to 8370. [2022-02-11 01:14:28,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8370 states, 8369 states have (on average 3.5580117098817063) internal successors, (29777), 8369 states have internal predecessors, (29777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:14:28,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8370 states to 8370 states and 29777 transitions. [2022-02-11 01:14:28,783 INFO L78 Accepts]: Start accepts. Automaton has 8370 states and 29777 transitions. Word has length 33 [2022-02-11 01:14:28,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:14:28,783 INFO L470 AbstractCegarLoop]: Abstraction has 8370 states and 29777 transitions. [2022-02-11 01:14:28,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:14:28,783 INFO L276 IsEmpty]: Start isEmpty. Operand 8370 states and 29777 transitions. [2022-02-11 01:14:28,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:14:28,796 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:14:28,796 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:14:28,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-11 01:14:28,996 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,SelfDestructingSolverStorable38 [2022-02-11 01:14:28,997 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:14:28,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:14:28,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1392255156, now seen corresponding path program 34 times [2022-02-11 01:14:28,997 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:14:28,997 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174205955] [2022-02-11 01:14:28,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:14:28,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:14:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:14:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:14:30,181 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:14:30,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174205955] [2022-02-11 01:14:30,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174205955] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:14:30,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497163498] [2022-02-11 01:14:30,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:14:30,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:14:30,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:14:30,182 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) [2022-02-11 01:14:30,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-11 01:14:30,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:14:30,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:14:30,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-11 01:14:30,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:14:30,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-02-11 01:14:31,517 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 70 [2022-02-11 01:14:31,520 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 115 [2022-02-11 01:14:31,523 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 68 [2022-02-11 01:14:31,926 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 48 [2022-02-11 01:14:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:14:31,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:14:41,601 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-02-11 01:14:41,602 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 6054 treesize of output 5838 [2022-02-11 01:14:56,653 INFO L353 Elim1Store]: treesize reduction 29, result has 70.1 percent of original size [2022-02-11 01:14:56,653 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 1241 treesize of output 932 [2022-02-11 01:15:02,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:02,853 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:02,940 INFO L353 Elim1Store]: treesize reduction 18, result has 76.6 percent of original size [2022-02-11 01:15:02,941 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 1286 treesize of output 944 [2022-02-11 01:15:04,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:04,894 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-02-11 01:15:04,895 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 1 [2022-02-11 01:15:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:15:04,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497163498] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:15:04,960 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:15:04,960 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 27 [2022-02-11 01:15:04,960 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860241095] [2022-02-11 01:15:04,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:15:04,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-11 01:15:04,960 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:15:04,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-11 01:15:04,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2022-02-11 01:15:04,960 INFO L87 Difference]: Start difference. First operand 8370 states and 29777 transitions. Second operand has 28 states, 28 states have (on average 2.5) internal successors, (70), 27 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) [2022-02-11 01:15:14,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:15:14,859 INFO L93 Difference]: Finished difference Result 11953 states and 40402 transitions. [2022-02-11 01:15:14,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-11 01:15:14,859 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5) internal successors, (70), 27 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 33 [2022-02-11 01:15:14,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:15:14,883 INFO L225 Difference]: With dead ends: 11953 [2022-02-11 01:15:14,883 INFO L226 Difference]: Without dead ends: 11710 [2022-02-11 01:15:14,884 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=807, Invalid=5513, Unknown=0, NotChecked=0, Total=6320 [2022-02-11 01:15:14,884 INFO L934 BasicCegarLoop]: 36 mSDtfsCounter, 457 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 1496 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 3168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1594 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:15:14,884 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 464 Invalid, 3168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1496 Invalid, 0 Unknown, 1594 Unchecked, 1.5s Time] [2022-02-11 01:15:14,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11710 states. [2022-02-11 01:15:15,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11710 to 8678. [2022-02-11 01:15:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8678 states, 8677 states have (on average 3.5587184510775614) internal successors, (30879), 8677 states have internal predecessors, (30879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:15:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8678 states to 8678 states and 30879 transitions. [2022-02-11 01:15:15,038 INFO L78 Accepts]: Start accepts. Automaton has 8678 states and 30879 transitions. Word has length 33 [2022-02-11 01:15:15,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:15:15,038 INFO L470 AbstractCegarLoop]: Abstraction has 8678 states and 30879 transitions. [2022-02-11 01:15:15,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5) internal successors, (70), 27 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) [2022-02-11 01:15:15,038 INFO L276 IsEmpty]: Start isEmpty. Operand 8678 states and 30879 transitions. [2022-02-11 01:15:15,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:15:15,052 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:15:15,052 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:15:15,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-11 01:15:15,252 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,SelfDestructingSolverStorable39 [2022-02-11 01:15:15,252 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:15:15,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:15:15,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1881426828, now seen corresponding path program 35 times [2022-02-11 01:15:15,253 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:15:15,253 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611723752] [2022-02-11 01:15:15,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:15:15,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:15:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:15:16,039 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:15:16,040 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:15:16,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611723752] [2022-02-11 01:15:16,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611723752] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:15:16,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255188822] [2022-02-11 01:15:16,040 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:15:16,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:15:16,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:15:16,041 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) [2022-02-11 01:15:16,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-11 01:15:16,075 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 01:15:16,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:15:16,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 01:15:16,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:15:16,253 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2022-02-11 01:15:17,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:17,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:17,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:17,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:17,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:17,479 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 118 treesize of output 76 [2022-02-11 01:15:17,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:17,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:17,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:17,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:17,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:17,485 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 191 treesize of output 135 [2022-02-11 01:15:17,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:17,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:17,490 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 76 [2022-02-11 01:15:17,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:17,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:15:17,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:17,918 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 70 treesize of output 48 [2022-02-11 01:15:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:15:17,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:15:26,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:26,720 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 5858 treesize of output 5642 [2022-02-11 01:15:40,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:40,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:40,832 INFO L353 Elim1Store]: treesize reduction 9, result has 88.3 percent of original size [2022-02-11 01:15:40,833 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 553 treesize of output 454 [2022-02-11 01:15:42,663 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:42,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:42,725 INFO L353 Elim1Store]: treesize reduction 18, result has 76.6 percent of original size [2022-02-11 01:15:42,725 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 575 treesize of output 455 [2022-02-11 01:15:43,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:43,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:43,396 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 01:15:43,396 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 595 treesize of output 493 [2022-02-11 01:15:46,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:46,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:15:46,830 INFO L353 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2022-02-11 01:15:46,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 573 treesize of output 1 [2022-02-11 01:15:47,087 INFO L353 Elim1Store]: treesize reduction 10, result has 65.5 percent of original size [2022-02-11 01:15:47,088 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 56 treesize of output 58 [2022-02-11 01:15:47,130 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-02-11 01:15:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:15:47,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255188822] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:15:47,199 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:15:47,199 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 33 [2022-02-11 01:15:47,199 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617219455] [2022-02-11 01:15:47,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:15:47,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-02-11 01:15:47,199 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:15:47,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-02-11 01:15:47,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=964, Unknown=0, NotChecked=0, Total=1122 [2022-02-11 01:15:47,200 INFO L87 Difference]: Start difference. First operand 8678 states and 30879 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) [2022-02-11 01:15:57,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:15:57,981 INFO L93 Difference]: Finished difference Result 12400 states and 43402 transitions. [2022-02-11 01:15:57,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-11 01:15:57,981 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 33 [2022-02-11 01:15:57,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:15:58,008 INFO L225 Difference]: With dead ends: 12400 [2022-02-11 01:15:58,008 INFO L226 Difference]: Without dead ends: 12369 [2022-02-11 01:15:58,009 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 62 SyntacticMatches, 6 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2488 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=1027, Invalid=6455, Unknown=0, NotChecked=0, Total=7482 [2022-02-11 01:15:58,009 INFO L934 BasicCegarLoop]: 27 mSDtfsCounter, 339 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 2323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 765 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:15:58,009 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 288 Invalid, 2323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1492 Invalid, 0 Unknown, 765 Unchecked, 1.5s Time] [2022-02-11 01:15:58,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12369 states. [2022-02-11 01:15:58,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12369 to 9083. [2022-02-11 01:15:58,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9083 states, 9082 states have (on average 3.568927548998018) internal successors, (32413), 9082 states have internal predecessors, (32413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:15:58,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9083 states to 9083 states and 32413 transitions. [2022-02-11 01:15:58,167 INFO L78 Accepts]: Start accepts. Automaton has 9083 states and 32413 transitions. Word has length 33 [2022-02-11 01:15:58,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:15:58,167 INFO L470 AbstractCegarLoop]: Abstraction has 9083 states and 32413 transitions. [2022-02-11 01:15:58,167 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) [2022-02-11 01:15:58,167 INFO L276 IsEmpty]: Start isEmpty. Operand 9083 states and 32413 transitions. [2022-02-11 01:15:58,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 01:15:58,181 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:15:58,181 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:15:58,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-11 01:15:58,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:15:58,381 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-11 01:15:58,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:15:58,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1672387024, now seen corresponding path program 36 times [2022-02-11 01:15:58,382 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:15:58,382 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055817702] [2022-02-11 01:15:58,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:15:58,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:15:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:15:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:15:59,178 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:15:59,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055817702] [2022-02-11 01:15:59,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055817702] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:15:59,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620429969] [2022-02-11 01:15:59,178 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:15:59,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:15:59,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:15:59,179 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) [2022-02-11 01:15:59,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-11 01:15:59,214 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 01:15:59,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:15:59,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-11 01:15:59,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:15:59,348 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-02-11 01:16:00,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:00,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:00,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:00,505 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 115 treesize of output 75 [2022-02-11 01:16:00,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:00,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:00,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:00,511 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 170 treesize of output 126 [2022-02-11 01:16:00,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:00,516 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 76 [2022-02-11 01:16:01,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-11 01:16:01,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:01,266 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 104 treesize of output 72 [2022-02-11 01:16:01,305 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:16:01,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:16:06,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-11 01:16:06,976 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 6002 treesize of output 5786 Received shutdown request... [2022-02-11 01:16:27,122 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-02-11 01:16:27,124 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-02-11 01:16:27,134 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-11 01:16:27,139 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-11 01:16:27,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-02-11 01:16:27,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:16:27,324 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 2ms.. [2022-02-11 01:16:27,326 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-02-11 01:16:27,326 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-02-11 01:16:27,326 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-02-11 01:16:27,328 INFO L733 BasicCegarLoop]: Path program histogram: [36, 3, 2, 1] [2022-02-11 01:16:27,330 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-11 01:16:27,330 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-11 01:16:27,331 INFO L202 PluginConnector]: Adding new model three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.02 01:16:27 BasicIcfg [2022-02-11 01:16:27,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-11 01:16:27,331 INFO L158 Benchmark]: Toolchain (without parser) took 794755.62ms. Allocated memory was 176.2MB in the beginning and 626.0MB in the end (delta: 449.8MB). Free memory was 135.4MB in the beginning and 265.0MB in the end (delta: -129.6MB). Peak memory consumption was 472.8MB. Max. memory is 8.0GB. [2022-02-11 01:16:27,331 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 136.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-11 01:16:27,331 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.63ms. Allocated memory is still 176.2MB. Free memory was 135.3MB in the beginning and 133.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-11 01:16:27,331 INFO L158 Benchmark]: Boogie Preprocessor took 24.57ms. Allocated memory is still 176.2MB. Free memory was 133.8MB in the beginning and 132.8MB in the end (delta: 938.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-11 01:16:27,332 INFO L158 Benchmark]: RCFGBuilder took 246.99ms. Allocated memory is still 176.2MB. Free memory was 132.7MB in the beginning and 122.9MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-11 01:16:27,332 INFO L158 Benchmark]: TraceAbstraction took 794442.59ms. Allocated memory was 176.2MB in the beginning and 626.0MB in the end (delta: 449.8MB). Free memory was 122.4MB in the beginning and 265.0MB in the end (delta: -142.6MB). Peak memory consumption was 460.2MB. Max. memory is 8.0GB. [2022-02-11 01:16:27,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 136.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.63ms. Allocated memory is still 176.2MB. Free memory was 135.3MB in the beginning and 133.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 24.57ms. Allocated memory is still 176.2MB. Free memory was 133.8MB in the beginning and 132.8MB in the end (delta: 938.6kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 246.99ms. Allocated memory is still 176.2MB. Free memory was 132.7MB in the beginning and 122.9MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 794442.59ms. Allocated memory was 176.2MB in the beginning and 626.0MB in the end (delta: 449.8MB). Free memory was 122.4MB in the beginning and 265.0MB in the end (delta: -142.6MB). Peak memory consumption was 460.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 2ms.. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 2ms.. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 2ms.. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 2ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 45 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 794.3s, OverallIterations: 42, TraceHistogramMax: 2, PathProgramHistogramMax: 36, EmptinessCheckTime: 0.3s, AutomataDifference: 189.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9541 SdHoareTripleChecker+Valid, 26.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9541 mSDsluCounter, 8032 SdHoareTripleChecker+Invalid, 23.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 15801 IncrementalHoareTripleChecker+Unchecked, 15152 mSDsCounter, 1701 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31137 IncrementalHoareTripleChecker+Invalid, 48639 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1701 mSolverCounterUnsat, 994 mSDtfsCounter, 31137 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3495 GetRequests, 1931 SyntacticMatches, 90 SemanticMatches, 1474 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27492 ImplicationChecksByTransitivity, 191.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9083occurred in iteration=41, InterpolantAutomatonStates: 1211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.2s AutomataMinimizationTime, 41 MinimizatonAttempts, 116029 StatesRemovedByMinimization, 41 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 562.2s InterpolantComputationTime, 2347 NumberOfCodeBlocks, 2347 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 3353 ConstructedInterpolants, 184 QuantifiedInterpolants, 350985 SizeOfPredicates, 266 NumberOfNonLiveVariables, 3055 ConjunctsInSsa, 764 ConjunctsInUnsatCore, 113 InterpolantComputations, 5 PerfectInterpolantSequences, 242/1115 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown