/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/unroll-cond-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-11 00:10:30,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-11 00:10:30,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-11 00:10:30,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-11 00:10:30,736 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 00:10:30,760 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-11 00:10:30,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-11 00:10:30,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-11 00:10:30,761 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-11 00:10:30,761 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-11 00:10:30,762 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-11 00:10:30,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-11 00:10:30,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-11 00:10:30,762 INFO L138 SettingsManager]: * Use SBE=true [2022-02-11 00:10:30,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-11 00:10:30,763 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-11 00:10:30,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-11 00:10:30,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-11 00:10:30,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-11 00:10:30,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-11 00:10:30,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-11 00:10:30,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-11 00:10:30,763 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-11 00:10:30,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-11 00:10:30,763 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-11 00:10:30,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-11 00:10:30,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-11 00:10:30,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-11 00:10:30,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-11 00:10:30,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-11 00:10:30,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-11 00:10:30,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-11 00:10:30,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-11 00:10:30,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-11 00:10:30,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-11 00:10:30,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-11 00:10:30,765 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-11 00:10:30,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-11 00:10:30,766 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-11 00:10:30,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-11 00:10:30,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-11 00:10:30,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-11 00:10:30,950 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-11 00:10:30,951 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-11 00:10:30,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-cond-3.wvr.bpl [2022-02-11 00:10:30,952 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-cond-3.wvr.bpl' [2022-02-11 00:10:30,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-11 00:10:30,975 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-11 00:10:30,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-11 00:10:30,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-11 00:10:30,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-11 00:10:30,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "unroll-cond-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:10:30" (1/1) ... [2022-02-11 00:10:30,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "unroll-cond-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:10:30" (1/1) ... [2022-02-11 00:10:30,994 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-11 00:10:30,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-11 00:10:30,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-11 00:10:30,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-11 00:10:30,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-11 00:10:31,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "unroll-cond-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:10:30" (1/1) ... [2022-02-11 00:10:31,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "unroll-cond-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:10:30" (1/1) ... [2022-02-11 00:10:31,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "unroll-cond-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:10:30" (1/1) ... [2022-02-11 00:10:31,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "unroll-cond-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:10:30" (1/1) ... [2022-02-11 00:10:31,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "unroll-cond-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:10:30" (1/1) ... [2022-02-11 00:10:31,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "unroll-cond-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:10:30" (1/1) ... [2022-02-11 00:10:31,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "unroll-cond-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:10:30" (1/1) ... [2022-02-11 00:10:31,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-11 00:10:31,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-11 00:10:31,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-11 00:10:31,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-11 00:10:31,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "unroll-cond-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:10:30" (1/1) ... [2022-02-11 00:10:31,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-11 00:10:31,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:31,041 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 00:10:31,045 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 00:10:31,070 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-11 00:10:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-11 00:10:31,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-11 00:10:31,071 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-11 00:10:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-11 00:10:31,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-11 00:10:31,071 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-11 00:10:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-11 00:10:31,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-11 00:10:31,072 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 00:10:31,106 INFO L234 CfgBuilder]: Building ICFG [2022-02-11 00:10:31,108 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-11 00:10:31,217 INFO L275 CfgBuilder]: Performing block encoding [2022-02-11 00:10:31,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-11 00:10:31,266 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-11 00:10:31,267 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2022-02-11 00:10:31,268 INFO L202 PluginConnector]: Adding new model unroll-cond-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 12:10:31 BoogieIcfgContainer [2022-02-11 00:10:31,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-11 00:10:31,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-11 00:10:31,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-11 00:10:31,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-11 00:10:31,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "unroll-cond-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:10:30" (1/2) ... [2022-02-11 00:10:31,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a24a324 and model type unroll-cond-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.02 12:10:31, skipping insertion in model container [2022-02-11 00:10:31,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "unroll-cond-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 12:10:31" (2/2) ... [2022-02-11 00:10:31,291 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-3.wvr.bpl [2022-02-11 00:10:31,295 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-11 00:10:31,295 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-11 00:10:31,296 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-11 00:10:31,296 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-11 00:10:31,356 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-11 00:10:31,403 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-11 00:10:31,411 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 00:10:31,411 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-11 00:10:31,419 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 16 transitions, 48 flow [2022-02-11 00:10:31,432 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:31,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:31,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-02-11 00:10:31,438 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:31,438 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:31,439 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:31,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:31,444 INFO L85 PathProgramCache]: Analyzing trace with hash 717728653, now seen corresponding path program 1 times [2022-02-11 00:10:31,450 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:31,451 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240089276] [2022-02-11 00:10:31,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:31,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:31,665 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 00:10:31,666 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:31,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240089276] [2022-02-11 00:10:31,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240089276] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:10:31,667 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:10:31,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-11 00:10:31,668 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782682933] [2022-02-11 00:10:31,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:10:31,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-11 00:10:31,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:31,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-11 00:10:31,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:10:31,709 INFO L87 Difference]: Start difference. First operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 00:10:31,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:31,798 INFO L93 Difference]: Finished difference Result 26 states and 43 transitions. [2022-02-11 00:10:31,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-11 00:10:31,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-02-11 00:10:31,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:31,806 INFO L225 Difference]: With dead ends: 26 [2022-02-11 00:10:31,806 INFO L226 Difference]: Without dead ends: 18 [2022-02-11 00:10:31,808 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-11 00:10:31,812 INFO L934 BasicCegarLoop]: 5 mSDtfsCounter, 11 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:31,814 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 7 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:10:31,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-02-11 00:10:31,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-02-11 00:10:31,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:10:31,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 32 transitions. [2022-02-11 00:10:31,835 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 32 transitions. Word has length 10 [2022-02-11 00:10:31,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:31,836 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 32 transitions. [2022-02-11 00:10:31,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 00:10:31,836 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 32 transitions. [2022-02-11 00:10:31,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-02-11 00:10:31,837 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:31,837 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:31,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-11 00:10:31,837 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:31,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:31,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1947075123, now seen corresponding path program 2 times [2022-02-11 00:10:31,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:31,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737584186] [2022-02-11 00:10:31,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:31,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:31,908 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 00:10:31,908 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:31,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737584186] [2022-02-11 00:10:31,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737584186] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:10:31,909 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:10:31,909 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-11 00:10:31,909 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753623515] [2022-02-11 00:10:31,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:10:31,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-11 00:10:31,910 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:31,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-11 00:10:31,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:10:31,912 INFO L87 Difference]: Start difference. First operand 18 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 00:10:31,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:31,945 INFO L93 Difference]: Finished difference Result 28 states and 51 transitions. [2022-02-11 00:10:31,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-11 00:10:31,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-02-11 00:10:31,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:31,946 INFO L225 Difference]: With dead ends: 28 [2022-02-11 00:10:31,946 INFO L226 Difference]: Without dead ends: 23 [2022-02-11 00:10:31,946 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:10:31,947 INFO L934 BasicCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:31,947 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 9 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:10:31,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-02-11 00:10:31,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2022-02-11 00:10:31,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:31,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 35 transitions. [2022-02-11 00:10:31,950 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 35 transitions. Word has length 10 [2022-02-11 00:10:31,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:31,951 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 35 transitions. [2022-02-11 00:10:31,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 00:10:31,951 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 35 transitions. [2022-02-11 00:10:31,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-11 00:10:31,951 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:31,951 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:31,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-11 00:10:31,952 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:31,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:31,952 INFO L85 PathProgramCache]: Analyzing trace with hash -976603346, now seen corresponding path program 1 times [2022-02-11 00:10:31,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:31,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425710830] [2022-02-11 00:10:31,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:31,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:32,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:32,078 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:32,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425710830] [2022-02-11 00:10:32,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425710830] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:32,079 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255726244] [2022-02-11 00:10:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:32,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:32,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:32,082 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 00:10:32,084 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 00:10:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:32,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-11 00:10:32,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:32,330 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 11 treesize of output 7 [2022-02-11 00:10:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:32,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:32,561 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:32,561 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 62 [2022-02-11 00:10:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:32,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255726244] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:32,723 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:32,723 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-02-11 00:10:32,723 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615328319] [2022-02-11 00:10:32,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:32,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:10:32,723 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:32,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:10:32,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:10:32,724 INFO L87 Difference]: Start difference. First operand 20 states and 35 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 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 00:10:32,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:32,843 INFO L93 Difference]: Finished difference Result 42 states and 72 transitions. [2022-02-11 00:10:32,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:10:32,843 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 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 11 [2022-02-11 00:10:32,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:32,844 INFO L225 Difference]: With dead ends: 42 [2022-02-11 00:10:32,844 INFO L226 Difference]: Without dead ends: 34 [2022-02-11 00:10:32,844 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:10:32,845 INFO L934 BasicCegarLoop]: 4 mSDtfsCounter, 25 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:32,845 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 21 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:10:32,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-02-11 00:10:32,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 25. [2022-02-11 00:10:32,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:32,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 47 transitions. [2022-02-11 00:10:32,848 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 47 transitions. Word has length 11 [2022-02-11 00:10:32,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:32,849 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 47 transitions. [2022-02-11 00:10:32,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 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 00:10:32,849 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 47 transitions. [2022-02-11 00:10:32,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-11 00:10:32,849 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:32,849 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:32,870 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 00:10:33,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:33,050 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:33,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash 653560174, now seen corresponding path program 2 times [2022-02-11 00:10:33,051 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:33,051 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398090563] [2022-02-11 00:10:33,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:33,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:33,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:33,116 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:33,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398090563] [2022-02-11 00:10:33,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398090563] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:33,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461524386] [2022-02-11 00:10:33,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:10:33,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:33,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:33,118 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 00:10:33,119 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 00:10:33,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:10:33,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:33,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-11 00:10:33,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:33,259 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:33,260 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 31 [2022-02-11 00:10:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:33,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:33,440 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:33,440 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 62 [2022-02-11 00:10:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:33,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461524386] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:33,558 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:33,558 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-02-11 00:10:33,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615325291] [2022-02-11 00:10:33,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:33,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:10:33,558 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:33,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:10:33,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:10:33,559 INFO L87 Difference]: Start difference. First operand 25 states and 47 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 00:10:33,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:33,776 INFO L93 Difference]: Finished difference Result 42 states and 74 transitions. [2022-02-11 00:10:33,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:10:33,776 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-02-11 00:10:33,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:33,777 INFO L225 Difference]: With dead ends: 42 [2022-02-11 00:10:33,777 INFO L226 Difference]: Without dead ends: 32 [2022-02-11 00:10:33,777 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-02-11 00:10:33,778 INFO L934 BasicCegarLoop]: 6 mSDtfsCounter, 22 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:33,778 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 19 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:10:33,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-02-11 00:10:33,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2022-02-11 00:10:33,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:33,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 47 transitions. [2022-02-11 00:10:33,781 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 47 transitions. Word has length 11 [2022-02-11 00:10:33,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:33,781 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 47 transitions. [2022-02-11 00:10:33,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 00:10:33,781 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 47 transitions. [2022-02-11 00:10:33,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-11 00:10:33,781 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:33,781 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:33,800 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 00:10:33,982 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,SelfDestructingSolverStorable3 [2022-02-11 00:10:33,982 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:33,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:33,983 INFO L85 PathProgramCache]: Analyzing trace with hash -209476878, now seen corresponding path program 3 times [2022-02-11 00:10:33,983 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:33,983 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975413431] [2022-02-11 00:10:33,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:33,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:34,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:34,026 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:34,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975413431] [2022-02-11 00:10:34,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975413431] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:34,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910236645] [2022-02-11 00:10:34,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:10:34,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:34,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:34,027 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 00:10:34,029 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 00:10:34,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:10:34,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:34,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-11 00:10:34,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:34,152 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:34,153 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 31 [2022-02-11 00:10:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:34,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:34,259 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:34,259 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 68 [2022-02-11 00:10:34,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:34,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910236645] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:34,382 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:34,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-02-11 00:10:34,382 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861926098] [2022-02-11 00:10:34,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:34,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-11 00:10:34,383 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:34,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-11 00:10:34,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:10:34,383 INFO L87 Difference]: Start difference. First operand 25 states and 47 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 00:10:34,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:34,510 INFO L93 Difference]: Finished difference Result 56 states and 98 transitions. [2022-02-11 00:10:34,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-11 00:10:34,511 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-02-11 00:10:34,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:34,511 INFO L225 Difference]: With dead ends: 56 [2022-02-11 00:10:34,511 INFO L226 Difference]: Without dead ends: 46 [2022-02-11 00:10:34,512 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:10:34,512 INFO L934 BasicCegarLoop]: 7 mSDtfsCounter, 24 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:34,512 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 27 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:10:34,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-02-11 00:10:34,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 29. [2022-02-11 00:10:34,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:34,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 53 transitions. [2022-02-11 00:10:34,515 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 53 transitions. Word has length 11 [2022-02-11 00:10:34,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:34,516 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 53 transitions. [2022-02-11 00:10:34,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 00:10:34,516 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 53 transitions. [2022-02-11 00:10:34,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-11 00:10:34,516 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:34,516 INFO L515 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:34,535 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 00:10:34,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:34,728 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:34,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:34,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1961287763, now seen corresponding path program 4 times [2022-02-11 00:10:34,728 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:34,729 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740728874] [2022-02-11 00:10:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:34,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:34,780 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 00:10:34,780 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:34,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740728874] [2022-02-11 00:10:34,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740728874] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:34,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166438400] [2022-02-11 00:10:34,780 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:10:34,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:34,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:34,781 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 00:10:34,782 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 00:10:34,801 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:10:34,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:34,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-11 00:10:34,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:34,920 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:34,920 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 48 [2022-02-11 00:10:34,941 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 00:10:34,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:35,065 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:35,066 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 77 [2022-02-11 00:10:35,239 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 00:10:35,239 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166438400] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:35,239 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:35,239 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-02-11 00:10:35,240 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915611924] [2022-02-11 00:10:35,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:35,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-11 00:10:35,240 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:35,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-11 00:10:35,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:10:35,241 INFO L87 Difference]: Start difference. First operand 29 states and 53 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:35,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:35,368 INFO L93 Difference]: Finished difference Result 41 states and 76 transitions. [2022-02-11 00:10:35,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 00:10:35,369 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-02-11 00:10:35,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:35,369 INFO L225 Difference]: With dead ends: 41 [2022-02-11 00:10:35,369 INFO L226 Difference]: Without dead ends: 36 [2022-02-11 00:10:35,370 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-02-11 00:10:35,370 INFO L934 BasicCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:35,370 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 30 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:10:35,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-02-11 00:10:35,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2022-02-11 00:10:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.9) internal successors, (57), 30 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:35,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 57 transitions. [2022-02-11 00:10:35,373 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 57 transitions. Word has length 12 [2022-02-11 00:10:35,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:35,373 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 57 transitions. [2022-02-11 00:10:35,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:35,374 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 57 transitions. [2022-02-11 00:10:35,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-11 00:10:35,374 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:35,374 INFO L515 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:35,390 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 00:10:35,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:35,587 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:35,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:35,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1194161295, now seen corresponding path program 5 times [2022-02-11 00:10:35,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:35,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779725226] [2022-02-11 00:10:35,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:35,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:35,630 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 00:10:35,630 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:35,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779725226] [2022-02-11 00:10:35,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779725226] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:35,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426210065] [2022-02-11 00:10:35,631 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:10:35,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:35,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:35,632 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 00:10:35,633 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 00:10:35,653 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:10:35,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:35,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-11 00:10:35,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:35,805 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:35,805 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 18 [2022-02-11 00:10:35,818 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 00:10:35,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:35,925 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:35,926 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 77 [2022-02-11 00:10:36,091 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 00:10:36,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426210065] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:36,091 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:36,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-02-11 00:10:36,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507666044] [2022-02-11 00:10:36,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:36,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:10:36,092 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:36,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:10:36,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:10:36,092 INFO L87 Difference]: Start difference. First operand 31 states and 57 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 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 00:10:36,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:36,170 INFO L93 Difference]: Finished difference Result 49 states and 82 transitions. [2022-02-11 00:10:36,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:10:36,170 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 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 12 [2022-02-11 00:10:36,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:36,171 INFO L225 Difference]: With dead ends: 49 [2022-02-11 00:10:36,171 INFO L226 Difference]: Without dead ends: 44 [2022-02-11 00:10:36,171 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:10:36,172 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:36,172 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 40 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:10:36,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-02-11 00:10:36,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2022-02-11 00:10:36,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.9) internal successors, (57), 30 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 57 transitions. [2022-02-11 00:10:36,174 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 57 transitions. Word has length 12 [2022-02-11 00:10:36,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:36,175 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 57 transitions. [2022-02-11 00:10:36,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 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 00:10:36,175 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 57 transitions. [2022-02-11 00:10:36,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-11 00:10:36,175 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:36,175 INFO L515 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:36,191 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 00:10:36,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:36,385 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:36,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:36,385 INFO L85 PathProgramCache]: Analyzing trace with hash 496751199, now seen corresponding path program 1 times [2022-02-11 00:10:36,385 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:36,385 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3886798] [2022-02-11 00:10:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:36,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:36,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:10:36,404 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:36,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3886798] [2022-02-11 00:10:36,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3886798] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:10:36,404 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:10:36,404 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-11 00:10:36,404 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472763358] [2022-02-11 00:10:36,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:10:36,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-11 00:10:36,405 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:36,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-11 00:10:36,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-11 00:10:36,405 INFO L87 Difference]: Start difference. First operand 31 states and 57 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:36,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:36,423 INFO L93 Difference]: Finished difference Result 37 states and 69 transitions. [2022-02-11 00:10:36,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-11 00:10:36,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-02-11 00:10:36,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:36,424 INFO L225 Difference]: With dead ends: 37 [2022-02-11 00:10:36,424 INFO L226 Difference]: Without dead ends: 37 [2022-02-11 00:10:36,424 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-11 00:10:36,425 INFO L934 BasicCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:36,425 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 12 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:10:36,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-02-11 00:10:36,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2022-02-11 00:10:36,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 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 00:10:36,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 60 transitions. [2022-02-11 00:10:36,437 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 60 transitions. Word has length 12 [2022-02-11 00:10:36,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:36,437 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 60 transitions. [2022-02-11 00:10:36,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:36,438 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 60 transitions. [2022-02-11 00:10:36,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-11 00:10:36,438 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:36,438 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:36,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-11 00:10:36,438 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:36,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:36,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1281229393, now seen corresponding path program 1 times [2022-02-11 00:10:36,438 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:36,439 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267482828] [2022-02-11 00:10:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:36,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:36,474 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 00:10:36,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:36,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267482828] [2022-02-11 00:10:36,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267482828] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:36,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627784144] [2022-02-11 00:10:36,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:36,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:36,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:36,476 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 00:10:36,477 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 00:10:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:36,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-11 00:10:36,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:36,519 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 00:10:36,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:36,546 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 00:10:36,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627784144] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:36,546 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:36,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-02-11 00:10:36,547 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089454900] [2022-02-11 00:10:36,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:36,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:10:36,547 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:36,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:10:36,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:10:36,547 INFO L87 Difference]: Start difference. First operand 32 states and 60 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 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 00:10:36,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:36,620 INFO L93 Difference]: Finished difference Result 63 states and 114 transitions. [2022-02-11 00:10:36,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:10:36,622 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 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 12 [2022-02-11 00:10:36,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:36,623 INFO L225 Difference]: With dead ends: 63 [2022-02-11 00:10:36,623 INFO L226 Difference]: Without dead ends: 63 [2022-02-11 00:10:36,623 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:10:36,624 INFO L934 BasicCegarLoop]: 7 mSDtfsCounter, 19 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:36,624 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 28 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:10:36,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-02-11 00:10:36,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36. [2022-02-11 00:10:36,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 2.057142857142857) internal successors, (72), 35 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 00:10:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 72 transitions. [2022-02-11 00:10:36,626 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 72 transitions. Word has length 12 [2022-02-11 00:10:36,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:36,626 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 72 transitions. [2022-02-11 00:10:36,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 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 00:10:36,626 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 72 transitions. [2022-02-11 00:10:36,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-11 00:10:36,627 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:36,627 INFO L515 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:36,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-02-11 00:10:36,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:36,843 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:36,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:36,844 INFO L85 PathProgramCache]: Analyzing trace with hash -643753026, now seen corresponding path program 2 times [2022-02-11 00:10:36,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:36,844 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142991420] [2022-02-11 00:10:36,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:36,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:36,878 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:36,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142991420] [2022-02-11 00:10:36,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142991420] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:36,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468762914] [2022-02-11 00:10:36,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:10:36,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:36,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:36,879 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 00:10:36,880 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 00:10:36,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:10:36,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:36,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:10:36,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:36,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:36,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:36,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468762914] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:36,940 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:36,940 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-02-11 00:10:36,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044723798] [2022-02-11 00:10:36,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:36,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:10:36,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:36,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:10:36,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:10:36,943 INFO L87 Difference]: Start difference. First operand 36 states and 72 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:37,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:37,020 INFO L93 Difference]: Finished difference Result 79 states and 139 transitions. [2022-02-11 00:10:37,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-11 00:10:37,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-02-11 00:10:37,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:37,021 INFO L225 Difference]: With dead ends: 79 [2022-02-11 00:10:37,021 INFO L226 Difference]: Without dead ends: 76 [2022-02-11 00:10:37,021 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:10:37,022 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 37 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:37,022 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 22 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:10:37,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-02-11 00:10:37,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 39. [2022-02-11 00:10:37,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 2.210526315789474) internal successors, (84), 38 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:37,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 84 transitions. [2022-02-11 00:10:37,024 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 84 transitions. Word has length 13 [2022-02-11 00:10:37,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:37,025 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 84 transitions. [2022-02-11 00:10:37,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 84 transitions. [2022-02-11 00:10:37,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-11 00:10:37,025 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:37,025 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:37,044 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 00:10:37,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:37,232 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:37,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:37,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1873233678, now seen corresponding path program 6 times [2022-02-11 00:10:37,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:37,233 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292221060] [2022-02-11 00:10:37,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:37,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:37,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:37,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:37,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292221060] [2022-02-11 00:10:37,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292221060] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:37,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724689155] [2022-02-11 00:10:37,262 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:10:37,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:37,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:37,268 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 00:10:37,268 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 00:10:37,289 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 00:10:37,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:37,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:10:37,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:37,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:37,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724689155] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:37,340 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:37,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-02-11 00:10:37,341 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957671552] [2022-02-11 00:10:37,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:37,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:10:37,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:37,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:10:37,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:10:37,343 INFO L87 Difference]: Start difference. First operand 39 states and 84 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:37,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:37,389 INFO L93 Difference]: Finished difference Result 71 states and 129 transitions. [2022-02-11 00:10:37,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:10:37,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-02-11 00:10:37,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:37,390 INFO L225 Difference]: With dead ends: 71 [2022-02-11 00:10:37,390 INFO L226 Difference]: Without dead ends: 71 [2022-02-11 00:10:37,390 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:10:37,391 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 27 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:37,391 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 39 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:10:37,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-02-11 00:10:37,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 42. [2022-02-11 00:10:37,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:37,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 90 transitions. [2022-02-11 00:10:37,393 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 90 transitions. Word has length 13 [2022-02-11 00:10:37,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:37,393 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 90 transitions. [2022-02-11 00:10:37,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:37,394 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 90 transitions. [2022-02-11 00:10:37,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-11 00:10:37,394 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:37,394 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:37,413 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 00:10:37,607 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,SelfDestructingSolverStorable10 [2022-02-11 00:10:37,608 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:37,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:37,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1654607150, now seen corresponding path program 7 times [2022-02-11 00:10:37,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:37,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509920056] [2022-02-11 00:10:37,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:37,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:37,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:37,631 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:37,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509920056] [2022-02-11 00:10:37,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509920056] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:37,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286306609] [2022-02-11 00:10:37,631 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:10:37,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:37,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:37,632 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 00:10:37,651 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 00:10:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:37,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:10:37,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:37,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:37,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:37,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286306609] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:37,704 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:37,705 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-02-11 00:10:37,705 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200270556] [2022-02-11 00:10:37,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:37,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:10:37,705 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:37,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:10:37,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:10:37,706 INFO L87 Difference]: Start difference. First operand 42 states and 90 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:37,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:37,767 INFO L93 Difference]: Finished difference Result 53 states and 103 transitions. [2022-02-11 00:10:37,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:10:37,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-02-11 00:10:37,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:37,768 INFO L225 Difference]: With dead ends: 53 [2022-02-11 00:10:37,768 INFO L226 Difference]: Without dead ends: 51 [2022-02-11 00:10:37,768 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:10:37,769 INFO L934 BasicCegarLoop]: 7 mSDtfsCounter, 17 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:37,769 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 30 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:10:37,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-02-11 00:10:37,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2022-02-11 00:10:37,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:37,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 89 transitions. [2022-02-11 00:10:37,777 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 89 transitions. Word has length 13 [2022-02-11 00:10:37,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:37,777 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 89 transitions. [2022-02-11 00:10:37,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:37,777 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 89 transitions. [2022-02-11 00:10:37,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-11 00:10:37,778 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:37,778 INFO L515 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:37,795 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 00:10:37,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:37,995 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:37,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:37,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1063887052, now seen corresponding path program 3 times [2022-02-11 00:10:37,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:37,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437779564] [2022-02-11 00:10:37,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:37,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:38,019 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:38,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437779564] [2022-02-11 00:10:38,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437779564] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:38,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333347942] [2022-02-11 00:10:38,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:10:38,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:38,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:38,020 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 00:10:38,022 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 00:10:38,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:10:38,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:38,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:10:38,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:38,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:38,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:38,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333347942] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:38,080 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:38,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-02-11 00:10:38,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137133028] [2022-02-11 00:10:38,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:38,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:10:38,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:38,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:10:38,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:10:38,081 INFO L87 Difference]: Start difference. First operand 42 states and 89 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:38,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:38,115 INFO L93 Difference]: Finished difference Result 72 states and 130 transitions. [2022-02-11 00:10:38,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:10:38,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-02-11 00:10:38,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:38,116 INFO L225 Difference]: With dead ends: 72 [2022-02-11 00:10:38,116 INFO L226 Difference]: Without dead ends: 72 [2022-02-11 00:10:38,116 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:10:38,116 INFO L934 BasicCegarLoop]: 7 mSDtfsCounter, 18 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:38,117 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 27 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:10:38,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-02-11 00:10:38,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 41. [2022-02-11 00:10:38,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 2.125) internal successors, (85), 40 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 00:10:38,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 85 transitions. [2022-02-11 00:10:38,118 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 85 transitions. Word has length 13 [2022-02-11 00:10:38,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:38,119 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 85 transitions. [2022-02-11 00:10:38,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:38,119 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 85 transitions. [2022-02-11 00:10:38,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-11 00:10:38,119 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:38,119 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:38,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-02-11 00:10:38,339 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,SelfDestructingSolverStorable12 [2022-02-11 00:10:38,339 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:38,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:38,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1656015310, now seen corresponding path program 8 times [2022-02-11 00:10:38,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:38,340 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833787106] [2022-02-11 00:10:38,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:38,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:38,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:38,361 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:38,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833787106] [2022-02-11 00:10:38,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833787106] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:38,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119566112] [2022-02-11 00:10:38,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:10:38,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:38,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:38,364 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 00:10:38,366 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 00:10:38,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:10:38,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:38,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:10:38,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:38,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:38,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:38,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119566112] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:38,426 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:38,426 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-02-11 00:10:38,433 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825906046] [2022-02-11 00:10:38,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:38,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-11 00:10:38,433 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:38,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-11 00:10:38,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-11 00:10:38,434 INFO L87 Difference]: Start difference. First operand 41 states and 85 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:38,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:38,479 INFO L93 Difference]: Finished difference Result 54 states and 101 transitions. [2022-02-11 00:10:38,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:10:38,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-02-11 00:10:38,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:38,479 INFO L225 Difference]: With dead ends: 54 [2022-02-11 00:10:38,480 INFO L226 Difference]: Without dead ends: 50 [2022-02-11 00:10:38,480 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:10:38,480 INFO L934 BasicCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:38,480 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 32 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:10:38,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-02-11 00:10:38,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2022-02-11 00:10:38,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 2.1) internal successors, (84), 40 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:38,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 84 transitions. [2022-02-11 00:10:38,482 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 84 transitions. Word has length 13 [2022-02-11 00:10:38,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:38,482 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 84 transitions. [2022-02-11 00:10:38,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:38,482 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 84 transitions. [2022-02-11 00:10:38,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-11 00:10:38,482 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:38,482 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:38,501 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 00:10:38,695 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,SelfDestructingSolverStorable13 [2022-02-11 00:10:38,695 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:38,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:38,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1206096466, now seen corresponding path program 9 times [2022-02-11 00:10:38,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:38,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938634657] [2022-02-11 00:10:38,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:38,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:38,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:38,717 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:38,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938634657] [2022-02-11 00:10:38,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938634657] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:10:38,717 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:10:38,717 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-11 00:10:38,717 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588860139] [2022-02-11 00:10:38,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:10:38,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 00:10:38,717 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:38,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 00:10:38,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-11 00:10:38,718 INFO L87 Difference]: Start difference. First operand 41 states and 84 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 00:10:38,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:38,743 INFO L93 Difference]: Finished difference Result 47 states and 91 transitions. [2022-02-11 00:10:38,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 00:10:38,743 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-02-11 00:10:38,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:38,743 INFO L225 Difference]: With dead ends: 47 [2022-02-11 00:10:38,743 INFO L226 Difference]: Without dead ends: 41 [2022-02-11 00:10:38,744 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-11 00:10:38,744 INFO L934 BasicCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:38,744 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:10:38,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-02-11 00:10:38,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-02-11 00:10:38,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 2.075) internal successors, (83), 40 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 00:10:38,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 83 transitions. [2022-02-11 00:10:38,756 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 83 transitions. Word has length 13 [2022-02-11 00:10:38,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:38,757 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 83 transitions. [2022-02-11 00:10:38,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 00:10:38,757 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 83 transitions. [2022-02-11 00:10:38,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-11 00:10:38,757 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:38,757 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:38,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-11 00:10:38,757 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:38,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:38,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2032672643, now seen corresponding path program 4 times [2022-02-11 00:10:38,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:38,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465448494] [2022-02-11 00:10:38,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:38,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:38,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:38,830 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:38,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465448494] [2022-02-11 00:10:38,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465448494] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:38,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491293346] [2022-02-11 00:10:38,831 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:10:38,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:38,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:38,846 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 00:10:38,847 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 00:10:38,866 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:10:38,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:38,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-11 00:10:38,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:39,043 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:39,044 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 129 [2022-02-11 00:10:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:39,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:39,388 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:39,388 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 39 treesize of output 202 [2022-02-11 00:10:40,672 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:40,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491293346] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:40,673 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:40,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-02-11 00:10:40,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534075540] [2022-02-11 00:10:40,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:40,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-11 00:10:40,673 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:40,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-11 00:10:40,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-02-11 00:10:40,674 INFO L87 Difference]: Start difference. First operand 41 states and 83 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 20 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 00:10:40,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:40,905 INFO L93 Difference]: Finished difference Result 70 states and 140 transitions. [2022-02-11 00:10:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-11 00:10:40,905 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 20 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 14 [2022-02-11 00:10:40,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:40,906 INFO L225 Difference]: With dead ends: 70 [2022-02-11 00:10:40,906 INFO L226 Difference]: Without dead ends: 53 [2022-02-11 00:10:40,906 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2022-02-11 00:10:40,907 INFO L934 BasicCegarLoop]: 5 mSDtfsCounter, 44 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:40,907 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 35 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:10:40,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-02-11 00:10:40,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2022-02-11 00:10:40,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 2.217391304347826) internal successors, (102), 46 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:40,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 102 transitions. [2022-02-11 00:10:40,912 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 102 transitions. Word has length 14 [2022-02-11 00:10:40,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:40,912 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 102 transitions. [2022-02-11 00:10:40,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 20 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 00:10:40,913 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 102 transitions. [2022-02-11 00:10:40,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-11 00:10:40,925 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:40,925 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:40,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-02-11 00:10:41,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-11 00:10:41,135 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:41,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:41,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1305130955, now seen corresponding path program 5 times [2022-02-11 00:10:41,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:41,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889156496] [2022-02-11 00:10:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:41,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:41,210 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:41,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889156496] [2022-02-11 00:10:41,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889156496] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:41,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074404986] [2022-02-11 00:10:41,210 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:10:41,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:41,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:41,211 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 00:10:41,212 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 00:10:41,232 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:10:41,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:41,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-11 00:10:41,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:41,373 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:41,373 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 129 [2022-02-11 00:10:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:41,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:42,146 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:42,146 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 39 treesize of output 202 [2022-02-11 00:10:42,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:42,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074404986] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:42,843 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:42,843 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-02-11 00:10:42,843 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150534710] [2022-02-11 00:10:42,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:42,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-11 00:10:42,844 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:42,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-11 00:10:42,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:10:42,844 INFO L87 Difference]: Start difference. First operand 47 states and 102 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:10:42,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:42,986 INFO L93 Difference]: Finished difference Result 79 states and 170 transitions. [2022-02-11 00:10:42,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:10:42,986 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-11 00:10:42,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:42,987 INFO L225 Difference]: With dead ends: 79 [2022-02-11 00:10:42,987 INFO L226 Difference]: Without dead ends: 69 [2022-02-11 00:10:42,987 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2022-02-11 00:10:42,987 INFO L934 BasicCegarLoop]: 6 mSDtfsCounter, 31 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:42,988 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 36 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:10:42,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-02-11 00:10:42,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 47. [2022-02-11 00:10:42,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 2.217391304347826) internal successors, (102), 46 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:42,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 102 transitions. [2022-02-11 00:10:42,989 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 102 transitions. Word has length 14 [2022-02-11 00:10:42,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:42,989 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 102 transitions. [2022-02-11 00:10:42,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:10:42,990 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 102 transitions. [2022-02-11 00:10:42,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-11 00:10:42,990 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:42,990 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:43,007 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 00:10:43,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-02-11 00:10:43,207 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:43,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:43,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1164372431, now seen corresponding path program 6 times [2022-02-11 00:10:43,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:43,208 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399013218] [2022-02-11 00:10:43,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:43,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:43,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:43,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399013218] [2022-02-11 00:10:43,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399013218] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:43,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093948665] [2022-02-11 00:10:43,262 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:10:43,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:43,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:43,263 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 00:10:43,264 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 00:10:43,292 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 00:10:43,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:43,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-11 00:10:43,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:43,461 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:43,461 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 129 [2022-02-11 00:10:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:43,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:43,862 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:43,862 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 39 treesize of output 202 [2022-02-11 00:10:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:46,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093948665] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:46,617 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:46,617 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-02-11 00:10:46,617 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295391311] [2022-02-11 00:10:46,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:46,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-11 00:10:46,617 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:46,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-11 00:10:46,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-02-11 00:10:46,618 INFO L87 Difference]: Start difference. First operand 47 states and 102 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 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 00:10:46,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:46,779 INFO L93 Difference]: Finished difference Result 76 states and 163 transitions. [2022-02-11 00:10:46,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-11 00:10:46,779 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 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 14 [2022-02-11 00:10:46,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:46,780 INFO L225 Difference]: With dead ends: 76 [2022-02-11 00:10:46,780 INFO L226 Difference]: Without dead ends: 62 [2022-02-11 00:10:46,780 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-02-11 00:10:46,780 INFO L934 BasicCegarLoop]: 5 mSDtfsCounter, 38 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:46,781 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 30 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:10:46,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-02-11 00:10:46,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2022-02-11 00:10:46,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 53 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:46,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 127 transitions. [2022-02-11 00:10:46,782 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 127 transitions. Word has length 14 [2022-02-11 00:10:46,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:46,782 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 127 transitions. [2022-02-11 00:10:46,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 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 00:10:46,783 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 127 transitions. [2022-02-11 00:10:46,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-11 00:10:46,783 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:46,783 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:46,799 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 00:10:46,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:46,988 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:46,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:46,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1500431345, now seen corresponding path program 7 times [2022-02-11 00:10:46,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:46,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654233976] [2022-02-11 00:10:46,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:46,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:47,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:47,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654233976] [2022-02-11 00:10:47,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654233976] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:47,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598546804] [2022-02-11 00:10:47,054 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:10:47,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:47,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:47,057 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 00:10:47,068 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 00:10:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:47,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-11 00:10:47,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:47,248 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:47,248 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 129 [2022-02-11 00:10:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:47,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:48,036 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:48,038 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 39 treesize of output 202 [2022-02-11 00:10:51,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:51,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598546804] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:51,087 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:51,087 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-02-11 00:10:51,087 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789097018] [2022-02-11 00:10:51,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:51,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-11 00:10:51,087 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:51,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-11 00:10:51,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:10:51,088 INFO L87 Difference]: Start difference. First operand 54 states and 127 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:10:51,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:51,291 INFO L93 Difference]: Finished difference Result 101 states and 211 transitions. [2022-02-11 00:10:51,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-11 00:10:51,292 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-11 00:10:51,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:51,292 INFO L225 Difference]: With dead ends: 101 [2022-02-11 00:10:51,292 INFO L226 Difference]: Without dead ends: 84 [2022-02-11 00:10:51,292 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-02-11 00:10:51,293 INFO L934 BasicCegarLoop]: 9 mSDtfsCounter, 51 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:51,293 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 57 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:10:51,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-02-11 00:10:51,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 54. [2022-02-11 00:10:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.3773584905660377) internal successors, (126), 53 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 00:10:51,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 126 transitions. [2022-02-11 00:10:51,295 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 126 transitions. Word has length 14 [2022-02-11 00:10:51,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:51,295 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 126 transitions. [2022-02-11 00:10:51,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:10:51,295 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 126 transitions. [2022-02-11 00:10:51,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-11 00:10:51,295 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:51,295 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:51,312 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 00:10:51,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:51,512 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:51,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:51,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1931498899, now seen corresponding path program 8 times [2022-02-11 00:10:51,513 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:51,513 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416628380] [2022-02-11 00:10:51,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:51,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:51,577 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:51,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416628380] [2022-02-11 00:10:51,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416628380] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:51,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167271265] [2022-02-11 00:10:51,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:10:51,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:51,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:51,578 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 00:10:51,579 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 00:10:51,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:10:51,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:51,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-11 00:10:51,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:51,788 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:51,789 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 114 [2022-02-11 00:10:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:52,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:52,278 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:52,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 39 treesize of output 202 [2022-02-11 00:10:55,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:55,716 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167271265] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:55,716 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:55,716 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-02-11 00:10:55,716 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440143787] [2022-02-11 00:10:55,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:55,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-11 00:10:55,717 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:55,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-11 00:10:55,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:10:55,717 INFO L87 Difference]: Start difference. First operand 54 states and 126 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:55,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:55,990 INFO L93 Difference]: Finished difference Result 126 states and 257 transitions. [2022-02-11 00:10:55,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-11 00:10:55,991 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-11 00:10:55,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:55,992 INFO L225 Difference]: With dead ends: 126 [2022-02-11 00:10:55,992 INFO L226 Difference]: Without dead ends: 109 [2022-02-11 00:10:55,993 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2022-02-11 00:10:55,994 INFO L934 BasicCegarLoop]: 9 mSDtfsCounter, 49 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:55,994 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 68 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:10:55,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-02-11 00:10:56,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 55. [2022-02-11 00:10:56,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 2.388888888888889) internal successors, (129), 54 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:56,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 129 transitions. [2022-02-11 00:10:56,002 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 129 transitions. Word has length 14 [2022-02-11 00:10:56,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:56,002 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 129 transitions. [2022-02-11 00:10:56,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:56,002 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 129 transitions. [2022-02-11 00:10:56,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-11 00:10:56,004 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:56,004 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:56,023 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 00:10:56,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:56,221 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:56,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:56,222 INFO L85 PathProgramCache]: Analyzing trace with hash 91287051, now seen corresponding path program 9 times [2022-02-11 00:10:56,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:56,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237726572] [2022-02-11 00:10:56,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:56,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:56,291 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:56,291 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:56,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237726572] [2022-02-11 00:10:56,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237726572] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:56,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641232399] [2022-02-11 00:10:56,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:10:56,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:56,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:56,293 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 00:10:56,295 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 00:10:56,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:10:56,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:56,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-11 00:10:56,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:56,474 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:56,475 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 129 [2022-02-11 00:10:56,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:56,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:56,874 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:56,875 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 39 treesize of output 202 [2022-02-11 00:10:57,464 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:57,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641232399] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:57,464 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:57,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-02-11 00:10:57,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614295531] [2022-02-11 00:10:57,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:57,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-11 00:10:57,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:57,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-11 00:10:57,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-02-11 00:10:57,465 INFO L87 Difference]: Start difference. First operand 55 states and 129 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 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 00:10:57,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:57,638 INFO L93 Difference]: Finished difference Result 82 states and 186 transitions. [2022-02-11 00:10:57,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-11 00:10:57,638 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 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 14 [2022-02-11 00:10:57,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:57,638 INFO L225 Difference]: With dead ends: 82 [2022-02-11 00:10:57,639 INFO L226 Difference]: Without dead ends: 68 [2022-02-11 00:10:57,639 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-02-11 00:10:57,639 INFO L934 BasicCegarLoop]: 5 mSDtfsCounter, 31 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:57,639 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 38 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:10:57,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-02-11 00:10:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2022-02-11 00:10:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.5081967213114753) internal successors, (153), 61 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 00:10:57,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 153 transitions. [2022-02-11 00:10:57,641 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 153 transitions. Word has length 14 [2022-02-11 00:10:57,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:57,641 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 153 transitions. [2022-02-11 00:10:57,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 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 00:10:57,641 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 153 transitions. [2022-02-11 00:10:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-11 00:10:57,642 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:57,642 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:57,660 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 00:10:57,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:57,858 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:57,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:57,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1721450571, now seen corresponding path program 10 times [2022-02-11 00:10:57,858 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:57,858 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638985814] [2022-02-11 00:10:57,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:57,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:57,916 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:57,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638985814] [2022-02-11 00:10:57,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638985814] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:57,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731656358] [2022-02-11 00:10:57,916 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:10:57,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:57,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:57,917 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 00:10:57,919 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 00:10:57,939 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:10:57,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:57,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-11 00:10:57,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:58,090 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:58,091 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 129 [2022-02-11 00:10:58,417 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:58,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:58,610 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:10:58,611 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 39 treesize of output 202 [2022-02-11 00:10:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:59,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731656358] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:59,478 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:59,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-02-11 00:10:59,478 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328832792] [2022-02-11 00:10:59,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:59,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-11 00:10:59,478 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:59,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-11 00:10:59,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:10:59,479 INFO L87 Difference]: Start difference. First operand 62 states and 153 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:10:59,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:59,719 INFO L93 Difference]: Finished difference Result 104 states and 234 transitions. [2022-02-11 00:10:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-11 00:10:59,719 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-11 00:10:59,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:59,719 INFO L225 Difference]: With dead ends: 104 [2022-02-11 00:10:59,720 INFO L226 Difference]: Without dead ends: 94 [2022-02-11 00:10:59,720 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2022-02-11 00:10:59,720 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 34 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:59,720 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 70 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:10:59,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-02-11 00:10:59,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 62. [2022-02-11 00:10:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.5081967213114753) internal successors, (153), 61 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 00:10:59,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 153 transitions. [2022-02-11 00:10:59,722 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 153 transitions. Word has length 14 [2022-02-11 00:10:59,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:59,722 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 153 transitions. [2022-02-11 00:10:59,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:10:59,722 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 153 transitions. [2022-02-11 00:10:59,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-11 00:10:59,723 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:59,723 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:59,739 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 00:10:59,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:59,934 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:59,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:59,935 INFO L85 PathProgramCache]: Analyzing trace with hash 858413519, now seen corresponding path program 11 times [2022-02-11 00:10:59,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:59,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629692336] [2022-02-11 00:10:59,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:59,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:11:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:00,005 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:11:00,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629692336] [2022-02-11 00:11:00,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629692336] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:11:00,006 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122664491] [2022-02-11 00:11:00,006 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:11:00,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:00,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:11:00,007 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 00:11:00,008 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 00:11:00,031 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:11:00,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:11:00,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-11 00:11:00,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:11:00,216 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:11:00,216 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 114 [2022-02-11 00:11:00,544 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:00,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:11:00,730 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:11:00,730 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 39 treesize of output 202 [2022-02-11 00:11:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:02,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122664491] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:11:02,041 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:11:02,041 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-02-11 00:11:02,042 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320346055] [2022-02-11 00:11:02,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:11:02,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-11 00:11:02,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:11:02,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-11 00:11:02,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:11:02,042 INFO L87 Difference]: Start difference. First operand 62 states and 153 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:11:02,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:11:02,392 INFO L93 Difference]: Finished difference Result 148 states and 304 transitions. [2022-02-11 00:11:02,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-11 00:11:02,392 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-11 00:11:02,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:11:02,393 INFO L225 Difference]: With dead ends: 148 [2022-02-11 00:11:02,393 INFO L226 Difference]: Without dead ends: 117 [2022-02-11 00:11:02,393 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2022-02-11 00:11:02,394 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 70 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:11:02,394 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 104 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:11:02,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-02-11 00:11:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 62. [2022-02-11 00:11:02,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.4754098360655736) internal successors, (151), 61 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 00:11:02,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 151 transitions. [2022-02-11 00:11:02,396 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 151 transitions. Word has length 14 [2022-02-11 00:11:02,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:11:02,396 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 151 transitions. [2022-02-11 00:11:02,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:11:02,396 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 151 transitions. [2022-02-11 00:11:02,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-11 00:11:02,396 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:11:02,396 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:11:02,413 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 00:11:02,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:02,611 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:11:02,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:11:02,612 INFO L85 PathProgramCache]: Analyzing trace with hash -125931317, now seen corresponding path program 12 times [2022-02-11 00:11:02,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:11:02,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424726183] [2022-02-11 00:11:02,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:11:02,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:11:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:11:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:02,669 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:11:02,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424726183] [2022-02-11 00:11:02,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424726183] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:11:02,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291209931] [2022-02-11 00:11:02,669 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:11:02,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:02,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:11:02,684 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 00:11:02,701 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 00:11:02,721 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 00:11:02,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:11:02,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-11 00:11:02,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:11:02,917 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:11:02,917 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 114 [2022-02-11 00:11:03,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:03,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:11:03,416 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:11:03,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 39 treesize of output 202 [2022-02-11 00:11:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:04,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291209931] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:11:04,255 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:11:04,255 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-02-11 00:11:04,255 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533666838] [2022-02-11 00:11:04,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:11:04,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-11 00:11:04,255 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:11:04,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-11 00:11:04,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-02-11 00:11:04,256 INFO L87 Difference]: Start difference. First operand 62 states and 151 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 00:11:04,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:11:04,446 INFO L93 Difference]: Finished difference Result 87 states and 200 transitions. [2022-02-11 00:11:04,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-11 00:11:04,446 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-11 00:11:04,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:11:04,447 INFO L225 Difference]: With dead ends: 87 [2022-02-11 00:11:04,447 INFO L226 Difference]: Without dead ends: 82 [2022-02-11 00:11:04,447 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2022-02-11 00:11:04,448 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:11:04,448 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 57 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:11:04,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-02-11 00:11:04,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 62. [2022-02-11 00:11:04,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.4754098360655736) internal successors, (151), 61 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 00:11:04,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 151 transitions. [2022-02-11 00:11:04,449 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 151 transitions. Word has length 14 [2022-02-11 00:11:04,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:11:04,450 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 151 transitions. [2022-02-11 00:11:04,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 00:11:04,450 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 151 transitions. [2022-02-11 00:11:04,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-11 00:11:04,450 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:11:04,450 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:11:04,466 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 00:11:04,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-02-11 00:11:04,659 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:11:04,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:11:04,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1185378639, now seen corresponding path program 13 times [2022-02-11 00:11:04,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:11:04,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791064537] [2022-02-11 00:11:04,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:11:04,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:11:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:11:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:04,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:11:04,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791064537] [2022-02-11 00:11:04,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791064537] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:11:04,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283242013] [2022-02-11 00:11:04,727 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:11:04,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:04,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:11:04,728 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 00:11:04,729 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 00:11:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:11:04,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-11 00:11:04,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:11:04,901 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:11:04,901 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 129 [2022-02-11 00:11:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:04,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:11:05,193 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:11:05,193 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 39 treesize of output 202 [2022-02-11 00:11:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:05,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283242013] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:11:05,842 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:11:05,842 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-02-11 00:11:05,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016060805] [2022-02-11 00:11:05,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:11:05,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-11 00:11:05,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:11:05,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-11 00:11:05,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-02-11 00:11:05,843 INFO L87 Difference]: Start difference. First operand 62 states and 151 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 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 00:11:05,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:11:05,984 INFO L93 Difference]: Finished difference Result 90 states and 211 transitions. [2022-02-11 00:11:05,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-11 00:11:05,984 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 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 14 [2022-02-11 00:11:05,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:11:05,985 INFO L225 Difference]: With dead ends: 90 [2022-02-11 00:11:05,985 INFO L226 Difference]: Without dead ends: 76 [2022-02-11 00:11:05,985 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-02-11 00:11:05,985 INFO L934 BasicCegarLoop]: 5 mSDtfsCounter, 38 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:11:05,985 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 30 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:11:05,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-02-11 00:11:05,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 69. [2022-02-11 00:11:05,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.573529411764706) internal successors, (175), 68 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 00:11:05,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 175 transitions. [2022-02-11 00:11:05,987 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 175 transitions. Word has length 14 [2022-02-11 00:11:05,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:11:05,987 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 175 transitions. [2022-02-11 00:11:05,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 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 00:11:05,987 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 175 transitions. [2022-02-11 00:11:05,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-11 00:11:05,988 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:11:05,988 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:11:06,005 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 00:11:06,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-02-11 00:11:06,192 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:11:06,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:11:06,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1479425137, now seen corresponding path program 14 times [2022-02-11 00:11:06,193 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:11:06,193 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853571913] [2022-02-11 00:11:06,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:11:06,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:11:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:11:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:06,254 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:11:06,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853571913] [2022-02-11 00:11:06,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853571913] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:11:06,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475348366] [2022-02-11 00:11:06,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:11:06,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:06,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:11:06,255 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 00:11:06,255 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 00:11:06,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:11:06,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:11:06,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-11 00:11:06,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:11:06,429 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:11:06,430 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 129 [2022-02-11 00:11:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:06,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:11:06,944 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:11:06,945 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 39 treesize of output 202 [2022-02-11 00:11:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:07,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475348366] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:11:07,511 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:11:07,511 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-02-11 00:11:07,511 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361255647] [2022-02-11 00:11:07,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:11:07,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-11 00:11:07,511 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:11:07,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-11 00:11:07,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:11:07,512 INFO L87 Difference]: Start difference. First operand 69 states and 175 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:11:07,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:11:07,731 INFO L93 Difference]: Finished difference Result 113 states and 264 transitions. [2022-02-11 00:11:07,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-11 00:11:07,732 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-11 00:11:07,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:11:07,732 INFO L225 Difference]: With dead ends: 113 [2022-02-11 00:11:07,732 INFO L226 Difference]: Without dead ends: 103 [2022-02-11 00:11:07,733 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2022-02-11 00:11:07,733 INFO L934 BasicCegarLoop]: 7 mSDtfsCounter, 37 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:11:07,733 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 46 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:11:07,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-02-11 00:11:07,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 69. [2022-02-11 00:11:07,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.573529411764706) internal successors, (175), 68 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 00:11:07,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 175 transitions. [2022-02-11 00:11:07,735 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 175 transitions. Word has length 14 [2022-02-11 00:11:07,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:11:07,735 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 175 transitions. [2022-02-11 00:11:07,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:11:07,735 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 175 transitions. [2022-02-11 00:11:07,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-11 00:11:07,735 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:11:07,736 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:11:07,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-11 00:11:07,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-02-11 00:11:07,943 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:11:07,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:11:07,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1952505107, now seen corresponding path program 15 times [2022-02-11 00:11:07,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:11:07,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017942367] [2022-02-11 00:11:07,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:11:07,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:11:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:11:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:08,011 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:11:08,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017942367] [2022-02-11 00:11:08,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017942367] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:11:08,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912153776] [2022-02-11 00:11:08,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:11:08,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:08,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:11:08,012 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 00:11:08,013 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 00:11:08,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:11:08,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:11:08,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-11 00:11:08,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:11:08,210 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:11:08,211 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 114 [2022-02-11 00:11:08,510 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:08,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:11:08,680 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:11:08,681 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 39 treesize of output 202 [2022-02-11 00:11:09,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:09,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912153776] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:11:09,438 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:11:09,438 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-02-11 00:11:09,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252772779] [2022-02-11 00:11:09,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:11:09,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-11 00:11:09,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:11:09,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-11 00:11:09,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:11:09,439 INFO L87 Difference]: Start difference. First operand 69 states and 175 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:11:09,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:11:09,816 INFO L93 Difference]: Finished difference Result 159 states and 333 transitions. [2022-02-11 00:11:09,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-11 00:11:09,816 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-11 00:11:09,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:11:09,817 INFO L225 Difference]: With dead ends: 159 [2022-02-11 00:11:09,817 INFO L226 Difference]: Without dead ends: 135 [2022-02-11 00:11:09,817 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2022-02-11 00:11:09,818 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 80 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:11:09,818 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 77 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:11:09,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-02-11 00:11:09,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 71. [2022-02-11 00:11:09,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.557142857142857) internal successors, (179), 70 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 00:11:09,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 179 transitions. [2022-02-11 00:11:09,820 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 179 transitions. Word has length 14 [2022-02-11 00:11:09,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:11:09,820 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 179 transitions. [2022-02-11 00:11:09,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:11:09,820 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 179 transitions. [2022-02-11 00:11:09,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-11 00:11:09,820 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:11:09,821 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:11:09,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-11 00:11:10,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:10,035 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:11:10,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:11:10,036 INFO L85 PathProgramCache]: Analyzing trace with hash 968160271, now seen corresponding path program 16 times [2022-02-11 00:11:10,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:11:10,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184791564] [2022-02-11 00:11:10,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:11:10,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:11:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:11:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:10,104 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:11:10,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184791564] [2022-02-11 00:11:10,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184791564] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:11:10,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671919785] [2022-02-11 00:11:10,104 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:11:10,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:10,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:11:10,105 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 00:11:10,106 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 00:11:10,123 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:11:10,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:11:10,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-11 00:11:10,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:11:10,304 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:11:10,304 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 114 [2022-02-11 00:11:10,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:10,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:11:10,778 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:11:10,778 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 39 treesize of output 202 [2022-02-11 00:11:11,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:11,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671919785] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:11:11,367 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:11:11,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-02-11 00:11:11,368 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133216762] [2022-02-11 00:11:11,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:11:11,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-11 00:11:11,368 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:11:11,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-11 00:11:11,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-02-11 00:11:11,368 INFO L87 Difference]: Start difference. First operand 71 states and 179 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 00:11:11,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:11:11,582 INFO L93 Difference]: Finished difference Result 108 states and 253 transitions. [2022-02-11 00:11:11,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-11 00:11:11,582 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-11 00:11:11,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:11:11,583 INFO L225 Difference]: With dead ends: 108 [2022-02-11 00:11:11,583 INFO L226 Difference]: Without dead ends: 103 [2022-02-11 00:11:11,583 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2022-02-11 00:11:11,583 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:11:11,583 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 61 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:11:11,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-02-11 00:11:11,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2022-02-11 00:11:11,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.557142857142857) internal successors, (179), 70 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 00:11:11,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 179 transitions. [2022-02-11 00:11:11,585 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 179 transitions. Word has length 14 [2022-02-11 00:11:11,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:11:11,585 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 179 transitions. [2022-02-11 00:11:11,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 00:11:11,585 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 179 transitions. [2022-02-11 00:11:11,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-11 00:11:11,586 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:11:11,586 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:11:11,603 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 00:11:11,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-11 00:11:11,799 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:11:11,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:11:11,800 INFO L85 PathProgramCache]: Analyzing trace with hash 518241427, now seen corresponding path program 17 times [2022-02-11 00:11:11,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:11:11,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767077995] [2022-02-11 00:11:11,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:11:11,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:11:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:11:11,855 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:11,855 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:11:11,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767077995] [2022-02-11 00:11:11,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767077995] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:11:11,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452091750] [2022-02-11 00:11:11,855 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:11:11,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:11,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:11:11,857 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 00:11:11,858 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 00:11:11,875 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:11:11,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:11:11,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-11 00:11:11,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:11:12,062 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:11:12,062 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 114 [2022-02-11 00:11:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:12,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:11:12,715 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:11:12,715 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 39 treesize of output 202 [2022-02-11 00:11:14,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:14,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452091750] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:11:14,177 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:11:14,177 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-02-11 00:11:14,177 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137557491] [2022-02-11 00:11:14,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:11:14,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-11 00:11:14,177 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:11:14,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-11 00:11:14,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-02-11 00:11:14,178 INFO L87 Difference]: Start difference. First operand 71 states and 179 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:11:14,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:11:14,404 INFO L93 Difference]: Finished difference Result 115 states and 272 transitions. [2022-02-11 00:11:14,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:11:14,404 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-02-11 00:11:14,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:11:14,405 INFO L225 Difference]: With dead ends: 115 [2022-02-11 00:11:14,405 INFO L226 Difference]: Without dead ends: 110 [2022-02-11 00:11:14,405 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2022-02-11 00:11:14,405 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 25 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:11:14,405 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 46 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:11:14,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-02-11 00:11:14,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 73. [2022-02-11 00:11:14,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 2.5277777777777777) internal successors, (182), 72 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 00:11:14,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 182 transitions. [2022-02-11 00:11:14,408 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 182 transitions. Word has length 14 [2022-02-11 00:11:14,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:11:14,408 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 182 transitions. [2022-02-11 00:11:14,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:11:14,408 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 182 transitions. [2022-02-11 00:11:14,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:11:14,409 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:11:14,409 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:11:14,425 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 00:11:14,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-11 00:11:14,615 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:11:14,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:11:14,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2139507810, now seen corresponding path program 18 times [2022-02-11 00:11:14,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:11:14,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145691417] [2022-02-11 00:11:14,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:11:14,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:11:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:11:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:14,707 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:11:14,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145691417] [2022-02-11 00:11:14,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145691417] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:11:14,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553799887] [2022-02-11 00:11:14,707 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:11:14,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:14,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:11:14,708 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 00:11:14,709 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 00:11:14,733 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 00:11:14,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:11:14,734 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:11:14,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:11:14,917 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:11:14,918 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 7 new quantified variables, introduced 6 case distinctions, treesize of input 23 treesize of output 64 [2022-02-11 00:11:14,978 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:14,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:11:15,473 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:11:15,473 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:11:21,016 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:11:21,016 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:11:23,055 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:11:23,056 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:11:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:27,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553799887] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:11:27,065 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:11:27,065 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-02-11 00:11:27,065 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297685889] [2022-02-11 00:11:27,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:11:27,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-11 00:11:27,065 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:11:27,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-11 00:11:27,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2022-02-11 00:11:27,066 INFO L87 Difference]: Start difference. First operand 73 states and 182 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 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 00:11:27,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:11:27,651 INFO L93 Difference]: Finished difference Result 148 states and 315 transitions. [2022-02-11 00:11:27,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-11 00:11:27,651 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 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 15 [2022-02-11 00:11:27,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:11:27,652 INFO L225 Difference]: With dead ends: 148 [2022-02-11 00:11:27,652 INFO L226 Difference]: Without dead ends: 129 [2022-02-11 00:11:27,652 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2022-02-11 00:11:27,653 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 78 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:11:27,653 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 105 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:11:27,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-02-11 00:11:27,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 86. [2022-02-11 00:11:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.5294117647058822) internal successors, (215), 85 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 00:11:27,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 215 transitions. [2022-02-11 00:11:27,657 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 215 transitions. Word has length 15 [2022-02-11 00:11:27,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:11:27,657 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 215 transitions. [2022-02-11 00:11:27,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 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 00:11:27,657 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 215 transitions. [2022-02-11 00:11:27,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:11:27,657 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:11:27,657 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:11:27,673 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 00:11:27,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:27,874 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:11:27,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:11:27,874 INFO L85 PathProgramCache]: Analyzing trace with hash -431867732, now seen corresponding path program 19 times [2022-02-11 00:11:27,874 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:11:27,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126243138] [2022-02-11 00:11:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:11:27,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:11:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:11:27,968 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:27,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:11:27,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126243138] [2022-02-11 00:11:27,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126243138] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:11:27,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506042433] [2022-02-11 00:11:27,969 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:11:27,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:27,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:11:27,970 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 00:11:27,971 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 00:11:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:11:27,995 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:11:27,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:11:28,172 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:11:28,172 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 7 new quantified variables, introduced 6 case distinctions, treesize of input 23 treesize of output 64 [2022-02-11 00:11:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:28,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:11:28,677 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:11:28,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:11:38,256 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:11:38,257 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:11:41,184 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:11:41,185 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:11:45,364 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:45,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506042433] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:11:45,365 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:11:45,365 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-02-11 00:11:45,365 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223750440] [2022-02-11 00:11:45,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:11:45,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-11 00:11:45,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:11:45,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-11 00:11:45,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2022-02-11 00:11:45,366 INFO L87 Difference]: Start difference. First operand 86 states and 215 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 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 00:11:45,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:11:45,969 INFO L93 Difference]: Finished difference Result 175 states and 359 transitions. [2022-02-11 00:11:45,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-11 00:11:45,970 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 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 15 [2022-02-11 00:11:45,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:11:45,971 INFO L225 Difference]: With dead ends: 175 [2022-02-11 00:11:45,971 INFO L226 Difference]: Without dead ends: 161 [2022-02-11 00:11:45,972 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=1077, Unknown=0, NotChecked=0, Total=1260 [2022-02-11 00:11:45,973 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 84 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:11:45,975 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 101 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:11:45,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-02-11 00:11:45,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 89. [2022-02-11 00:11:45,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.5568181818181817) internal successors, (225), 88 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 00:11:45,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 225 transitions. [2022-02-11 00:11:45,979 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 225 transitions. Word has length 15 [2022-02-11 00:11:45,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:11:45,979 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 225 transitions. [2022-02-11 00:11:45,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 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 00:11:45,979 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 225 transitions. [2022-02-11 00:11:45,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:11:45,979 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:11:45,979 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:11:46,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-02-11 00:11:46,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:46,180 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:11:46,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:11:46,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1198295788, now seen corresponding path program 20 times [2022-02-11 00:11:46,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:11:46,181 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510201441] [2022-02-11 00:11:46,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:11:46,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:11:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:11:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:46,285 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:11:46,285 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510201441] [2022-02-11 00:11:46,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510201441] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:11:46,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86470096] [2022-02-11 00:11:46,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:11:46,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:46,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:11:46,287 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 00:11:46,287 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 00:11:46,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:11:46,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:11:46,312 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:11:46,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:11:46,468 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:11:46,468 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 112 [2022-02-11 00:11:47,020 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:47,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:11:47,455 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:11:47,456 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:11:52,594 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:11:52,594 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:11:53,804 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:11:53,804 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:11:56,640 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:56,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86470096] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:11:56,640 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:11:56,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-02-11 00:11:56,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986562749] [2022-02-11 00:11:56,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:11:56,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-11 00:11:56,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:11:56,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-11 00:11:56,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2022-02-11 00:11:56,641 INFO L87 Difference]: Start difference. First operand 89 states and 225 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:11:57,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:11:57,536 INFO L93 Difference]: Finished difference Result 189 states and 387 transitions. [2022-02-11 00:11:57,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-11 00:11:57,539 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-11 00:11:57,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:11:57,539 INFO L225 Difference]: With dead ends: 189 [2022-02-11 00:11:57,539 INFO L226 Difference]: Without dead ends: 174 [2022-02-11 00:11:57,540 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=219, Invalid=1263, Unknown=0, NotChecked=0, Total=1482 [2022-02-11 00:11:57,540 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 87 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:11:57,540 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 90 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:11:57,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-02-11 00:11:57,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 91. [2022-02-11 00:11:57,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 2.588888888888889) internal successors, (233), 90 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 00:11:57,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 233 transitions. [2022-02-11 00:11:57,543 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 233 transitions. Word has length 15 [2022-02-11 00:11:57,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:11:57,543 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 233 transitions. [2022-02-11 00:11:57,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:11:57,544 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 233 transitions. [2022-02-11 00:11:57,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:11:57,544 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:11:57,544 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:11:57,562 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 00:11:57,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:57,762 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:11:57,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:11:57,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1824663732, now seen corresponding path program 21 times [2022-02-11 00:11:57,763 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:11:57,763 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691353651] [2022-02-11 00:11:57,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:11:57,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:11:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:11:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:57,860 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:11:57,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691353651] [2022-02-11 00:11:57,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691353651] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:11:57,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832452346] [2022-02-11 00:11:57,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:11:57,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:57,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:11:57,861 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 00:11:57,862 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 00:11:57,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 00:11:57,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:11:57,883 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:11:57,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:11:58,079 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:11:58,079 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 112 [2022-02-11 00:11:58,457 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:58,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:11:58,857 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:11:58,858 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:12:05,826 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:12:05,826 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:12:07,110 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:12:07,111 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:12:08,784 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:12:08,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832452346] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:12:08,785 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:12:08,785 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-02-11 00:12:08,785 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889366634] [2022-02-11 00:12:08,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:12:08,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-11 00:12:08,785 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:12:08,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-11 00:12:08,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-02-11 00:12:08,786 INFO L87 Difference]: Start difference. First operand 91 states and 233 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:12:09,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:12:09,539 INFO L93 Difference]: Finished difference Result 213 states and 455 transitions. [2022-02-11 00:12:09,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-11 00:12:09,539 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-11 00:12:09,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:12:09,540 INFO L225 Difference]: With dead ends: 213 [2022-02-11 00:12:09,540 INFO L226 Difference]: Without dead ends: 188 [2022-02-11 00:12:09,540 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=206, Invalid=1276, Unknown=0, NotChecked=0, Total=1482 [2022-02-11 00:12:09,541 INFO L934 BasicCegarLoop]: 20 mSDtfsCounter, 68 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:12:09,541 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 220 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:12:09,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-02-11 00:12:09,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 98. [2022-02-11 00:12:09,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.6804123711340204) internal successors, (260), 97 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 00:12:09,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 260 transitions. [2022-02-11 00:12:09,543 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 260 transitions. Word has length 15 [2022-02-11 00:12:09,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:12:09,544 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 260 transitions. [2022-02-11 00:12:09,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:12:09,544 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 260 transitions. [2022-02-11 00:12:09,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:12:09,544 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:12:09,544 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:12:09,562 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 00:12:09,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:12:09,758 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:12:09,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:12:09,758 INFO L85 PathProgramCache]: Analyzing trace with hash -15548116, now seen corresponding path program 22 times [2022-02-11 00:12:09,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:12:09,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560704672] [2022-02-11 00:12:09,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:12:09,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:12:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:12:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:12:09,863 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:12:09,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560704672] [2022-02-11 00:12:09,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560704672] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:12:09,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742544711] [2022-02-11 00:12:09,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:12:09,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:12:09,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:12:09,864 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 00:12:09,865 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 00:12:09,887 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:12:09,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:12:09,888 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:12:09,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:12:10,067 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:12:10,067 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 7 new quantified variables, introduced 6 case distinctions, treesize of input 23 treesize of output 64 [2022-02-11 00:12:10,123 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:12:10,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:12:10,568 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:12:10,569 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:12:21,460 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:12:21,460 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:12:23,680 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:12:23,681 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:12:29,315 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:12:29,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742544711] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:12:29,316 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:12:29,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-02-11 00:12:29,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503986298] [2022-02-11 00:12:29,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:12:29,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-11 00:12:29,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:12:29,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-11 00:12:29,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-02-11 00:12:29,317 INFO L87 Difference]: Start difference. First operand 98 states and 260 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 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 00:12:30,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:12:30,392 INFO L93 Difference]: Finished difference Result 238 states and 484 transitions. [2022-02-11 00:12:30,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-11 00:12:30,392 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 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 15 [2022-02-11 00:12:30,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:12:30,396 INFO L225 Difference]: With dead ends: 238 [2022-02-11 00:12:30,396 INFO L226 Difference]: Without dead ends: 217 [2022-02-11 00:12:30,396 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=329, Invalid=1651, Unknown=0, NotChecked=0, Total=1980 [2022-02-11 00:12:30,397 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 144 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:12:30,397 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 137 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:12:30,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-02-11 00:12:30,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 106. [2022-02-11 00:12:30,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.7333333333333334) internal successors, (287), 105 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 00:12:30,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 287 transitions. [2022-02-11 00:12:30,400 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 287 transitions. Word has length 15 [2022-02-11 00:12:30,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:12:30,400 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 287 transitions. [2022-02-11 00:12:30,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 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 00:12:30,400 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 287 transitions. [2022-02-11 00:12:30,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:12:30,400 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:12:30,400 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:12:30,419 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 00:12:30,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-02-11 00:12:30,616 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:12:30,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:12:30,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1614615404, now seen corresponding path program 23 times [2022-02-11 00:12:30,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:12:30,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420883547] [2022-02-11 00:12:30,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:12:30,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:12:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:12:30,716 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:12:30,717 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:12:30,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420883547] [2022-02-11 00:12:30,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420883547] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:12:30,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313422132] [2022-02-11 00:12:30,717 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:12:30,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:12:30,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:12:30,756 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 00:12:30,758 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 00:12:30,781 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:12:30,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:12:30,782 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:12:30,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:12:30,940 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:12:30,940 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 112 [2022-02-11 00:12:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:12:31,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:12:31,580 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:12:31,581 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:12:43,985 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:12:43,986 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:12:45,802 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:12:45,803 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:12:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:12:50,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313422132] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:12:50,216 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:12:50,216 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-02-11 00:12:50,216 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418365407] [2022-02-11 00:12:50,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:12:50,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-11 00:12:50,216 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:12:50,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-11 00:12:50,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2022-02-11 00:12:50,217 INFO L87 Difference]: Start difference. First operand 106 states and 287 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:12:51,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:12:51,437 INFO L93 Difference]: Finished difference Result 218 states and 454 transitions. [2022-02-11 00:12:51,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 00:12:51,437 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-11 00:12:51,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:12:51,438 INFO L225 Difference]: With dead ends: 218 [2022-02-11 00:12:51,438 INFO L226 Difference]: Without dead ends: 203 [2022-02-11 00:12:51,439 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=313, Invalid=1493, Unknown=0, NotChecked=0, Total=1806 [2022-02-11 00:12:51,439 INFO L934 BasicCegarLoop]: 13 mSDtfsCounter, 96 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:12:51,439 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 123 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:12:51,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-02-11 00:12:51,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 106. [2022-02-11 00:12:51,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.7333333333333334) internal successors, (287), 105 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 00:12:51,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 287 transitions. [2022-02-11 00:12:51,442 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 287 transitions. Word has length 15 [2022-02-11 00:12:51,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:12:51,442 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 287 transitions. [2022-02-11 00:12:51,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:12:51,442 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 287 transitions. [2022-02-11 00:12:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:12:51,442 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:12:51,442 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:12:51,459 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 00:12:51,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:12:51,655 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:12:51,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:12:51,656 INFO L85 PathProgramCache]: Analyzing trace with hash 751578352, now seen corresponding path program 24 times [2022-02-11 00:12:51,656 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:12:51,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980995006] [2022-02-11 00:12:51,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:12:51,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:12:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:12:51,736 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:12:51,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:12:51,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980995006] [2022-02-11 00:12:51,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980995006] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:12:51,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555281096] [2022-02-11 00:12:51,737 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:12:51,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:12:51,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:12:51,738 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 00:12:51,738 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 00:12:51,761 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:12:51,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:12:51,762 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:12:51,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:12:51,943 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:12:51,943 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 112 [2022-02-11 00:12:52,224 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:12:52,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:12:52,614 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:12:52,614 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:13:12,729 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:13:12,729 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:13:15,655 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:13:15,655 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:13:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:13:18,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555281096] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:13:18,841 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:13:18,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-02-11 00:13:18,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283958499] [2022-02-11 00:13:18,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:13:18,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-11 00:13:18,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:13:18,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-11 00:13:18,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-02-11 00:13:18,843 INFO L87 Difference]: Start difference. First operand 106 states and 287 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:13:19,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:13:19,631 INFO L93 Difference]: Finished difference Result 231 states and 489 transitions. [2022-02-11 00:13:19,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-11 00:13:19,631 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-11 00:13:19,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:13:19,635 INFO L225 Difference]: With dead ends: 231 [2022-02-11 00:13:19,635 INFO L226 Difference]: Without dead ends: 206 [2022-02-11 00:13:19,636 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=256, Invalid=1384, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 00:13:19,636 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 80 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:13:19,636 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 181 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:13:19,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-02-11 00:13:19,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 106. [2022-02-11 00:13:19,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.7333333333333334) internal successors, (287), 105 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 00:13:19,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 287 transitions. [2022-02-11 00:13:19,639 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 287 transitions. Word has length 15 [2022-02-11 00:13:19,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:13:19,639 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 287 transitions. [2022-02-11 00:13:19,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:13:19,639 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 287 transitions. [2022-02-11 00:13:19,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:13:19,639 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:13:19,639 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:13:19,665 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 00:13:19,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:13:19,856 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:13:19,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:13:19,857 INFO L85 PathProgramCache]: Analyzing trace with hash -232766484, now seen corresponding path program 25 times [2022-02-11 00:13:19,857 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:13:19,857 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691533504] [2022-02-11 00:13:19,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:13:19,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:13:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:13:19,959 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:13:19,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:13:19,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691533504] [2022-02-11 00:13:19,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691533504] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:13:19,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424294596] [2022-02-11 00:13:19,960 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:13:19,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:13:19,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:13:19,961 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 00:13:19,962 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 00:13:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:13:19,986 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:13:19,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:13:20,210 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:13:20,210 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 112 [2022-02-11 00:13:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:13:20,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:13:20,979 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:13:20,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:13:25,125 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:13:25,125 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:13:27,534 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:13:27,535 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:13:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:13:34,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424294596] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:13:34,326 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:13:34,326 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-11 00:13:34,326 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105671111] [2022-02-11 00:13:34,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:13:34,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-11 00:13:34,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:13:34,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-11 00:13:34,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-02-11 00:13:34,326 INFO L87 Difference]: Start difference. First operand 106 states and 287 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 00:13:34,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:13:34,816 INFO L93 Difference]: Finished difference Result 215 states and 480 transitions. [2022-02-11 00:13:34,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-11 00:13:34,816 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-11 00:13:34,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:13:34,817 INFO L225 Difference]: With dead ends: 215 [2022-02-11 00:13:34,817 INFO L226 Difference]: Without dead ends: 205 [2022-02-11 00:13:34,818 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2022-02-11 00:13:34,818 INFO L934 BasicCegarLoop]: 13 mSDtfsCounter, 68 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:13:34,818 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 99 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:13:34,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-02-11 00:13:34,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 112. [2022-02-11 00:13:34,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.72972972972973) internal successors, (303), 111 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 00:13:34,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 303 transitions. [2022-02-11 00:13:34,821 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 303 transitions. Word has length 15 [2022-02-11 00:13:34,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:13:34,821 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 303 transitions. [2022-02-11 00:13:34,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 00:13:34,821 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 303 transitions. [2022-02-11 00:13:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:13:34,822 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:13:34,822 INFO L515 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:13:34,851 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 00:13:35,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-02-11 00:13:35,054 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:13:35,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:13:35,054 INFO L85 PathProgramCache]: Analyzing trace with hash 664510254, now seen corresponding path program 26 times [2022-02-11 00:13:35,054 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:13:35,054 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232721072] [2022-02-11 00:13:35,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:13:35,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:13:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:13:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:13:35,097 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:13:35,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232721072] [2022-02-11 00:13:35,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232721072] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:13:35,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324698345] [2022-02-11 00:13:35,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:13:35,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:13:35,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:13:35,099 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 00:13:35,099 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 00:13:35,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:13:35,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:13:35,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:13:35,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:13:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:13:35,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:13:35,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:13:35,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324698345] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:13:35,181 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:13:35,181 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-02-11 00:13:35,181 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300555137] [2022-02-11 00:13:35,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:13:35,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-11 00:13:35,182 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:13:35,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-11 00:13:35,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:13:35,182 INFO L87 Difference]: Start difference. First operand 112 states and 303 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:13:35,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:13:35,319 INFO L93 Difference]: Finished difference Result 325 states and 681 transitions. [2022-02-11 00:13:35,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-11 00:13:35,319 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-11 00:13:35,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:13:35,320 INFO L225 Difference]: With dead ends: 325 [2022-02-11 00:13:35,320 INFO L226 Difference]: Without dead ends: 325 [2022-02-11 00:13:35,320 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2022-02-11 00:13:35,321 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 95 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:13:35,321 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 59 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:13:35,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-02-11 00:13:35,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 130. [2022-02-11 00:13:35,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.8294573643410854) internal successors, (365), 129 states have internal predecessors, (365), 0 states have call successors, (0), 0 states 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 00:13:35,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 365 transitions. [2022-02-11 00:13:35,324 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 365 transitions. Word has length 15 [2022-02-11 00:13:35,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:13:35,324 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 365 transitions. [2022-02-11 00:13:35,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:13:35,325 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 365 transitions. [2022-02-11 00:13:35,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:13:35,325 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:13:35,325 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:13:35,343 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 00:13:35,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-02-11 00:13:35,542 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:13:35,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:13:35,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1078543472, now seen corresponding path program 27 times [2022-02-11 00:13:35,543 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:13:35,543 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632510458] [2022-02-11 00:13:35,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:13:35,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:13:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:13:35,641 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:13:35,641 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:13:35,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632510458] [2022-02-11 00:13:35,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632510458] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:13:35,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312042606] [2022-02-11 00:13:35,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:13:35,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:13:35,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:13:35,642 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 00:13:35,642 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 00:13:35,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:13:35,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:13:35,663 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:13:35,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:13:35,828 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:13:35,828 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 7 new quantified variables, introduced 6 case distinctions, treesize of input 23 treesize of output 64 [2022-02-11 00:13:35,866 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:13:35,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:13:36,316 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:13:36,317 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:13:51,076 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:13:51,076 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:13:52,226 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:13:52,226 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:13:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:13:55,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312042606] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:13:55,336 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:13:55,336 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-02-11 00:13:55,336 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343372346] [2022-02-11 00:13:55,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:13:55,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-11 00:13:55,337 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:13:55,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-11 00:13:55,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-02-11 00:13:55,337 INFO L87 Difference]: Start difference. First operand 130 states and 365 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 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 00:13:56,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:13:56,119 INFO L93 Difference]: Finished difference Result 236 states and 560 transitions. [2022-02-11 00:13:56,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-11 00:13:56,120 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 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 15 [2022-02-11 00:13:56,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:13:56,121 INFO L225 Difference]: With dead ends: 236 [2022-02-11 00:13:56,121 INFO L226 Difference]: Without dead ends: 222 [2022-02-11 00:13:56,121 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=1302, Unknown=0, NotChecked=0, Total=1560 [2022-02-11 00:13:56,121 INFO L934 BasicCegarLoop]: 7 mSDtfsCounter, 125 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:13:56,122 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 94 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:13:56,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-02-11 00:13:56,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 144. [2022-02-11 00:13:56,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.902097902097902) internal successors, (415), 143 states have internal predecessors, (415), 0 states have call successors, (0), 0 states 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 00:13:56,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 415 transitions. [2022-02-11 00:13:56,125 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 415 transitions. Word has length 15 [2022-02-11 00:13:56,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:13:56,125 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 415 transitions. [2022-02-11 00:13:56,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 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 00:13:56,125 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 415 transitions. [2022-02-11 00:13:56,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:13:56,125 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:13:56,125 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:13:56,143 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 00:13:56,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-11 00:13:56,341 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:13:56,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:13:56,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1586260304, now seen corresponding path program 28 times [2022-02-11 00:13:56,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:13:56,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501766721] [2022-02-11 00:13:56,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:13:56,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:13:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:13:56,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:13:56,440 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:13:56,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501766721] [2022-02-11 00:13:56,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501766721] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:13:56,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951765798] [2022-02-11 00:13:56,440 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:13:56,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:13:56,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:13:56,441 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 00:13:56,441 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 00:13:56,463 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:13:56,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:13:56,464 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:13:56,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:13:56,607 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:13:56,607 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 112 [2022-02-11 00:13:56,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:13:56,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:13:57,308 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:13:57,308 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:14:11,390 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:14:11,390 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:14:13,232 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:14:13,232 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:14:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:15,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951765798] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:15,644 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:15,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-02-11 00:14:15,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446603403] [2022-02-11 00:14:15,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:15,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-11 00:14:15,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:15,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-11 00:14:15,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2022-02-11 00:14:15,645 INFO L87 Difference]: Start difference. First operand 144 states and 415 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:14:16,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:16,659 INFO L93 Difference]: Finished difference Result 223 states and 544 transitions. [2022-02-11 00:14:16,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-11 00:14:16,660 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-11 00:14:16,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:16,661 INFO L225 Difference]: With dead ends: 223 [2022-02-11 00:14:16,661 INFO L226 Difference]: Without dead ends: 208 [2022-02-11 00:14:16,661 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=275, Invalid=1285, Unknown=0, NotChecked=0, Total=1560 [2022-02-11 00:14:16,661 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 77 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:16,662 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 94 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:16,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-02-11 00:14:16,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 143. [2022-02-11 00:14:16,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.8943661971830985) internal successors, (411), 142 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 00:14:16,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 411 transitions. [2022-02-11 00:14:16,665 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 411 transitions. Word has length 15 [2022-02-11 00:14:16,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:16,665 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 411 transitions. [2022-02-11 00:14:16,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:14:16,665 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 411 transitions. [2022-02-11 00:14:16,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:14:16,666 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:16,666 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:16,685 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 00:14:16,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-02-11 00:14:16,879 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:14:16,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:16,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1845669940, now seen corresponding path program 29 times [2022-02-11 00:14:16,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:16,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636878912] [2022-02-11 00:14:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:16,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:16,963 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:16,963 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:16,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636878912] [2022-02-11 00:14:16,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636878912] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:16,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686794378] [2022-02-11 00:14:16,964 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:14:16,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:16,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:16,965 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 00:14:16,965 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 00:14:16,991 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 00:14:16,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:16,994 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:14:16,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:17,172 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:14:17,172 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 112 [2022-02-11 00:14:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:17,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:18,085 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:14:18,086 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:14:23,705 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:14:23,705 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:14:26,267 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:14:26,268 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:14:27,377 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:27,377 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686794378] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:27,377 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:27,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-02-11 00:14:27,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986467784] [2022-02-11 00:14:27,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:27,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-11 00:14:27,378 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:27,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-11 00:14:27,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-02-11 00:14:27,379 INFO L87 Difference]: Start difference. First operand 143 states and 411 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:14:28,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:28,070 INFO L93 Difference]: Finished difference Result 246 states and 583 transitions. [2022-02-11 00:14:28,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-11 00:14:28,071 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-11 00:14:28,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:28,072 INFO L225 Difference]: With dead ends: 246 [2022-02-11 00:14:28,072 INFO L226 Difference]: Without dead ends: 226 [2022-02-11 00:14:28,072 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=300, Invalid=1506, Unknown=0, NotChecked=0, Total=1806 [2022-02-11 00:14:28,072 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 70 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:28,073 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 110 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:28,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-02-11 00:14:28,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 143. [2022-02-11 00:14:28,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.8943661971830985) internal successors, (411), 142 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 00:14:28,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 411 transitions. [2022-02-11 00:14:28,076 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 411 transitions. Word has length 15 [2022-02-11 00:14:28,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:28,076 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 411 transitions. [2022-02-11 00:14:28,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:14:28,076 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 411 transitions. [2022-02-11 00:14:28,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:14:28,076 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:28,076 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:28,093 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 00:14:28,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:28,285 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:14:28,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:28,286 INFO L85 PathProgramCache]: Analyzing trace with hash 861325104, now seen corresponding path program 30 times [2022-02-11 00:14:28,286 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:28,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495307491] [2022-02-11 00:14:28,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:28,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:28,363 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:28,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495307491] [2022-02-11 00:14:28,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495307491] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:28,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440658152] [2022-02-11 00:14:28,364 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:14:28,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:28,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:28,365 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:14:28,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-11 00:14:28,385 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 00:14:28,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:14:28,386 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:14:28,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:28,584 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:14:28,584 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 112 [2022-02-11 00:14:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:28,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:29,235 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:14:29,236 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:14:51,610 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:14:51,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:14:53,976 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:14:53,977 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:14:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:55,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440658152] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:14:55,130 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:14:55,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-11 00:14:55,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818151256] [2022-02-11 00:14:55,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:14:55,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-11 00:14:55,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:14:55,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-11 00:14:55,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-02-11 00:14:55,131 INFO L87 Difference]: Start difference. First operand 143 states and 411 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 00:14:55,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:14:55,741 INFO L93 Difference]: Finished difference Result 246 states and 598 transitions. [2022-02-11 00:14:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-11 00:14:55,741 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-11 00:14:55,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:14:55,742 INFO L225 Difference]: With dead ends: 246 [2022-02-11 00:14:55,742 INFO L226 Difference]: Without dead ends: 236 [2022-02-11 00:14:55,743 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=251, Invalid=1231, Unknown=0, NotChecked=0, Total=1482 [2022-02-11 00:14:55,743 INFO L934 BasicCegarLoop]: 9 mSDtfsCounter, 58 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:14:55,743 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 95 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:14:55,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-02-11 00:14:55,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 148. [2022-02-11 00:14:55,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.8979591836734695) internal successors, (426), 147 states have internal predecessors, (426), 0 states have call successors, (0), 0 states 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 00:14:55,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 426 transitions. [2022-02-11 00:14:55,746 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 426 transitions. Word has length 15 [2022-02-11 00:14:55,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:14:55,746 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 426 transitions. [2022-02-11 00:14:55,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 00:14:55,746 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 426 transitions. [2022-02-11 00:14:55,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:14:55,747 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:14:55,747 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:14:55,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-02-11 00:14:55,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-02-11 00:14:55,964 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:14:55,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:14:55,965 INFO L85 PathProgramCache]: Analyzing trace with hash 411406260, now seen corresponding path program 31 times [2022-02-11 00:14:55,965 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:14:55,965 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248656120] [2022-02-11 00:14:55,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:14:55,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:14:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:56,047 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:56,047 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:14:56,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248656120] [2022-02-11 00:14:56,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248656120] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:14:56,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335925277] [2022-02-11 00:14:56,047 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:14:56,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:14:56,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:14:56,049 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:14:56,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-11 00:14:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:14:56,073 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:14:56,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:14:56,327 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:14:56,327 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 112 [2022-02-11 00:14:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:14:56,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:14:57,177 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:14:57,177 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:15:12,439 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:15:12,440 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:15:13,249 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:15:13,250 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:15:18,152 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:18,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335925277] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:18,153 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:18,153 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-11 00:15:18,153 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371395663] [2022-02-11 00:15:18,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:18,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-11 00:15:18,153 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:18,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-11 00:15:18,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:15:18,154 INFO L87 Difference]: Start difference. First operand 148 states and 426 transitions. Second operand has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:15:18,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:18,524 INFO L93 Difference]: Finished difference Result 192 states and 497 transitions. [2022-02-11 00:15:18,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-11 00:15:18,524 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-11 00:15:18,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:18,525 INFO L225 Difference]: With dead ends: 192 [2022-02-11 00:15:18,525 INFO L226 Difference]: Without dead ends: 182 [2022-02-11 00:15:18,525 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=763, Unknown=0, NotChecked=0, Total=930 [2022-02-11 00:15:18,526 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 47 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:18,526 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 77 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:15:18,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-02-11 00:15:18,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 150. [2022-02-11 00:15:18,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.879194630872483) internal successors, (429), 149 states have internal predecessors, (429), 0 states have call successors, (0), 0 states 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 00:15:18,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 429 transitions. [2022-02-11 00:15:18,529 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 429 transitions. Word has length 15 [2022-02-11 00:15:18,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:18,529 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 429 transitions. [2022-02-11 00:15:18,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:15:18,529 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 429 transitions. [2022-02-11 00:15:18,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:15:18,529 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:18,529 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:18,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-02-11 00:15:18,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-02-11 00:15:18,740 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:15:18,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:18,740 INFO L85 PathProgramCache]: Analyzing trace with hash 635644332, now seen corresponding path program 32 times [2022-02-11 00:15:18,741 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:18,741 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066063908] [2022-02-11 00:15:18,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:18,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:18,848 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:18,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066063908] [2022-02-11 00:15:18,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066063908] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:18,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436938808] [2022-02-11 00:15:18,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:15:18,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:18,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:18,849 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:18,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-11 00:15:18,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:15:18,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:18,875 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:15:18,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:19,047 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:15:19,047 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 7 new quantified variables, introduced 6 case distinctions, treesize of input 23 treesize of output 64 [2022-02-11 00:15:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:19,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:19,542 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:15:19,543 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:15:22,873 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:15:22,873 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:15:24,900 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:15:24,900 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:15:27,943 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:27,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436938808] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:27,943 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:27,943 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-02-11 00:15:27,943 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526668309] [2022-02-11 00:15:27,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:27,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-11 00:15:27,943 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:27,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-11 00:15:27,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2022-02-11 00:15:27,944 INFO L87 Difference]: Start difference. First operand 150 states and 429 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 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 00:15:28,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:28,752 INFO L93 Difference]: Finished difference Result 296 states and 712 transitions. [2022-02-11 00:15:28,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-11 00:15:28,752 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 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 15 [2022-02-11 00:15:28,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:28,754 INFO L225 Difference]: With dead ends: 296 [2022-02-11 00:15:28,754 INFO L226 Difference]: Without dead ends: 277 [2022-02-11 00:15:28,754 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2022-02-11 00:15:28,755 INFO L934 BasicCegarLoop]: 13 mSDtfsCounter, 77 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:28,755 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 123 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:15:28,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-02-11 00:15:28,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 172. [2022-02-11 00:15:28,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.9766081871345027) internal successors, (509), 171 states have internal predecessors, (509), 0 states have call successors, (0), 0 states 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 00:15:28,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 509 transitions. [2022-02-11 00:15:28,759 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 509 transitions. Word has length 15 [2022-02-11 00:15:28,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:28,759 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 509 transitions. [2022-02-11 00:15:28,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 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 00:15:28,759 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 509 transitions. [2022-02-11 00:15:28,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:15:28,759 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:28,760 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:28,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-02-11 00:15:28,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-02-11 00:15:28,977 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:15:28,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:28,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2029159444, now seen corresponding path program 33 times [2022-02-11 00:15:28,978 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:28,978 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72887528] [2022-02-11 00:15:28,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:28,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:29,080 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:29,081 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:29,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72887528] [2022-02-11 00:15:29,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72887528] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:29,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785789810] [2022-02-11 00:15:29,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:15:29,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:29,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:29,082 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:29,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-11 00:15:29,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 00:15:29,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:29,105 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:15:29,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:29,256 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:15:29,256 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 112 [2022-02-11 00:15:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:29,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:29,819 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:15:29,820 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:15:34,288 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:15:34,288 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:15:34,867 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:15:34,868 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:15:38,370 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:38,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785789810] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:38,370 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:38,370 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-02-11 00:15:38,370 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324904898] [2022-02-11 00:15:38,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:38,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-11 00:15:38,370 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:38,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-11 00:15:38,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-02-11 00:15:38,371 INFO L87 Difference]: Start difference. First operand 172 states and 509 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:15:39,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:39,294 INFO L93 Difference]: Finished difference Result 291 states and 704 transitions. [2022-02-11 00:15:39,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-11 00:15:39,294 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-11 00:15:39,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:39,295 INFO L225 Difference]: With dead ends: 291 [2022-02-11 00:15:39,295 INFO L226 Difference]: Without dead ends: 281 [2022-02-11 00:15:39,296 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=242, Invalid=1240, Unknown=0, NotChecked=0, Total=1482 [2022-02-11 00:15:39,296 INFO L934 BasicCegarLoop]: 14 mSDtfsCounter, 76 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:39,296 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 119 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:15:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-02-11 00:15:39,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 172. [2022-02-11 00:15:39,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.9766081871345027) internal successors, (509), 171 states have internal predecessors, (509), 0 states have call successors, (0), 0 states 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 00:15:39,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 509 transitions. [2022-02-11 00:15:39,300 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 509 transitions. Word has length 15 [2022-02-11 00:15:39,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:39,300 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 509 transitions. [2022-02-11 00:15:39,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 00:15:39,300 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 509 transitions. [2022-02-11 00:15:39,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:15:39,300 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:39,300 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:39,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-02-11 00:15:39,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:39,512 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:15:39,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:39,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1402770800, now seen corresponding path program 34 times [2022-02-11 00:15:39,512 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:39,512 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644432503] [2022-02-11 00:15:39,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:39,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:39,593 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:39,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644432503] [2022-02-11 00:15:39,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644432503] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:39,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769184788] [2022-02-11 00:15:39,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:15:39,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:39,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:39,595 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:39,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-11 00:15:39,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:15:39,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:39,615 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:15:39,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:39,789 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:15:39,790 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 112 [2022-02-11 00:15:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:39,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:40,304 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:15:40,305 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:15:42,815 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:15:42,816 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:15:44,798 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:15:44,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:15:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:48,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769184788] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:15:48,703 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:15:48,703 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-02-11 00:15:48,703 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004561051] [2022-02-11 00:15:48,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:15:48,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-11 00:15:48,704 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:15:48,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-11 00:15:48,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2022-02-11 00:15:48,704 INFO L87 Difference]: Start difference. First operand 172 states and 509 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:15:49,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:15:49,521 INFO L93 Difference]: Finished difference Result 312 states and 757 transitions. [2022-02-11 00:15:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-11 00:15:49,521 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-11 00:15:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:15:49,522 INFO L225 Difference]: With dead ends: 312 [2022-02-11 00:15:49,522 INFO L226 Difference]: Without dead ends: 297 [2022-02-11 00:15:49,523 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=320, Invalid=1750, Unknown=0, NotChecked=0, Total=2070 [2022-02-11 00:15:49,523 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 80 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:15:49,523 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 150 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:15:49,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-02-11 00:15:49,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 178. [2022-02-11 00:15:49,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.994350282485876) internal successors, (530), 177 states have internal predecessors, (530), 0 states have call successors, (0), 0 states 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 00:15:49,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 530 transitions. [2022-02-11 00:15:49,527 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 530 transitions. Word has length 15 [2022-02-11 00:15:49,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:15:49,527 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 530 transitions. [2022-02-11 00:15:49,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:15:49,527 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 530 transitions. [2022-02-11 00:15:49,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:15:49,528 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:15:49,528 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:15:49,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-11 00:15:49,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:49,731 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:15:49,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:15:49,732 INFO L85 PathProgramCache]: Analyzing trace with hash 418425964, now seen corresponding path program 35 times [2022-02-11 00:15:49,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:15:49,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512875622] [2022-02-11 00:15:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:15:49,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:15:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:15:49,808 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:49,808 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:15:49,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512875622] [2022-02-11 00:15:49,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512875622] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:15:49,808 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057368090] [2022-02-11 00:15:49,809 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:15:49,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:15:49,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:15:49,810 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:15:49,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-11 00:15:49,832 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:15:49,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:15:49,833 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:15:49,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:15:50,027 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:15:50,027 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 112 [2022-02-11 00:15:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:15:50,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:15:50,826 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:15:50,827 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:16:01,810 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:16:01,810 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:16:03,410 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:16:03,410 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:16:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:06,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057368090] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:16:06,772 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:16:06,773 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-11 00:16:06,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322653625] [2022-02-11 00:16:06,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:16:06,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-11 00:16:06,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:16:06,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-11 00:16:06,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-02-11 00:16:06,773 INFO L87 Difference]: Start difference. First operand 178 states and 530 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 00:16:07,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:16:07,676 INFO L93 Difference]: Finished difference Result 303 states and 745 transitions. [2022-02-11 00:16:07,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-11 00:16:07,676 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-11 00:16:07,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:16:07,677 INFO L225 Difference]: With dead ends: 303 [2022-02-11 00:16:07,677 INFO L226 Difference]: Without dead ends: 278 [2022-02-11 00:16:07,678 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=435, Invalid=1917, Unknown=0, NotChecked=0, Total=2352 [2022-02-11 00:16:07,678 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 83 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:16:07,678 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 104 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:16:07,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-02-11 00:16:07,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 179. [2022-02-11 00:16:07,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 3.0) internal successors, (534), 178 states have internal predecessors, (534), 0 states have call successors, (0), 0 states 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 00:16:07,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 534 transitions. [2022-02-11 00:16:07,682 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 534 transitions. Word has length 15 [2022-02-11 00:16:07,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:16:07,682 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 534 transitions. [2022-02-11 00:16:07,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 00:16:07,682 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 534 transitions. [2022-02-11 00:16:07,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:16:07,683 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:16:07,683 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:16:07,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-02-11 00:16:07,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-02-11 00:16:07,899 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:16:07,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:16:07,899 INFO L85 PathProgramCache]: Analyzing trace with hash -31492880, now seen corresponding path program 36 times [2022-02-11 00:16:07,899 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:16:07,899 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410627942] [2022-02-11 00:16:07,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:16:07,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:16:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:16:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:07,974 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:16:07,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410627942] [2022-02-11 00:16:07,974 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410627942] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:16:07,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474859900] [2022-02-11 00:16:07,975 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:16:07,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:07,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:16:07,976 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:16:07,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-11 00:16:07,999 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 00:16:07,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:16:08,000 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:16:08,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:16:08,235 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:16:08,235 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 112 [2022-02-11 00:16:08,664 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:08,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:16:09,017 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:16:09,018 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:16:25,338 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:16:25,338 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:16:26,674 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:16:26,674 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:16:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:34,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474859900] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:16:34,112 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:16:34,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-02-11 00:16:34,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482833229] [2022-02-11 00:16:34,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:16:34,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-11 00:16:34,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:16:34,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-11 00:16:34,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:16:34,113 INFO L87 Difference]: Start difference. First operand 179 states and 534 transitions. Second operand has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:16:34,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:16:34,530 INFO L93 Difference]: Finished difference Result 243 states and 641 transitions. [2022-02-11 00:16:34,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-11 00:16:34,530 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-11 00:16:34,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:16:34,531 INFO L225 Difference]: With dead ends: 243 [2022-02-11 00:16:34,531 INFO L226 Difference]: Without dead ends: 233 [2022-02-11 00:16:34,532 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=206, Invalid=850, Unknown=0, NotChecked=0, Total=1056 [2022-02-11 00:16:34,532 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 54 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:16:34,532 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 84 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:16:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-02-11 00:16:34,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 179. [2022-02-11 00:16:34,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 3.0) internal successors, (534), 178 states have internal predecessors, (534), 0 states have call successors, (0), 0 states 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 00:16:34,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 534 transitions. [2022-02-11 00:16:34,536 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 534 transitions. Word has length 15 [2022-02-11 00:16:34,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:16:34,536 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 534 transitions. [2022-02-11 00:16:34,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:16:34,536 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 534 transitions. [2022-02-11 00:16:34,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:16:34,537 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:16:34,537 INFO L515 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:16:34,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-11 00:16:34,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-02-11 00:16:34,754 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:16:34,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:16:34,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1094075156, now seen corresponding path program 37 times [2022-02-11 00:16:34,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:16:34,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047938441] [2022-02-11 00:16:34,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:16:34,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:16:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:16:34,835 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:34,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:16:34,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047938441] [2022-02-11 00:16:34,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047938441] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:16:34,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356410751] [2022-02-11 00:16:34,836 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:16:34,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:34,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:16:34,837 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:16:34,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-11 00:16:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:16:34,860 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:16:34,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:16:35,105 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:16:35,105 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 112 [2022-02-11 00:16:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:35,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:16:35,688 INFO L353 Elim1Store]: treesize reduction 20, result has 93.1 percent of original size [2022-02-11 00:16:35,689 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 21 treesize of output 300 [2022-02-11 00:16:44,182 INFO L353 Elim1Store]: treesize reduction 15, result has 91.1 percent of original size [2022-02-11 00:16:44,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 17 treesize of output 177 [2022-02-11 00:16:45,812 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-02-11 00:16:45,813 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-02-11 00:16:50,609 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:50,610 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356410751] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:16:50,610 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:16:50,610 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-02-11 00:16:50,610 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613670245] [2022-02-11 00:16:50,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:16:50,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-11 00:16:50,610 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:16:50,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-11 00:16:50,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-02-11 00:16:50,611 INFO L87 Difference]: Start difference. First operand 179 states and 534 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:16:51,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:16:51,091 INFO L93 Difference]: Finished difference Result 238 states and 629 transitions. [2022-02-11 00:16:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-11 00:16:51,101 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-11 00:16:51,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:16:51,102 INFO L225 Difference]: With dead ends: 238 [2022-02-11 00:16:51,102 INFO L226 Difference]: Without dead ends: 228 [2022-02-11 00:16:51,102 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2022-02-11 00:16:51,102 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 58 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:16:51,103 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 92 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:16:51,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-02-11 00:16:51,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 181. [2022-02-11 00:16:51,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.9833333333333334) internal successors, (537), 180 states have internal predecessors, (537), 0 states have call successors, (0), 0 states 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 00:16:51,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 537 transitions. [2022-02-11 00:16:51,106 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 537 transitions. Word has length 15 [2022-02-11 00:16:51,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:16:51,106 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 537 transitions. [2022-02-11 00:16:51,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:16:51,106 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 537 transitions. [2022-02-11 00:16:51,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-11 00:16:51,107 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:16:51,107 INFO L515 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:16:51,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-11 00:16:51,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-02-11 00:16:51,312 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:16:51,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:16:51,312 INFO L85 PathProgramCache]: Analyzing trace with hash 2040614383, now seen corresponding path program 38 times [2022-02-11 00:16:51,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:16:51,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187175669] [2022-02-11 00:16:51,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:16:51,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:16:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:16:51,399 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:51,399 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:16:51,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187175669] [2022-02-11 00:16:51,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187175669] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:16:51,400 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670003886] [2022-02-11 00:16:51,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:16:51,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:16:51,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:16:51,401 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:16:51,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-11 00:16:51,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:16:51,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:16:51,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 28 conjunts are in the unsatisfiable core [2022-02-11 00:16:51,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:16:51,649 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:16:51,650 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 9 new quantified variables, introduced 10 case distinctions, treesize of input 71 treesize of output 129 [2022-02-11 00:16:51,764 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:16:51,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:16:52,169 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:16:52,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 74 treesize of output 413 [2022-02-11 00:17:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:24,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670003886] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:24,596 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:24,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-02-11 00:17:24,607 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747055972] [2022-02-11 00:17:24,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:24,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 00:17:24,608 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:24,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 00:17:24,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2022-02-11 00:17:24,608 INFO L87 Difference]: Start difference. First operand 181 states and 537 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 00:17:24,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:24,931 INFO L93 Difference]: Finished difference Result 255 states and 672 transitions. [2022-02-11 00:17:24,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:17:24,931 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 16 [2022-02-11 00:17:24,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:24,932 INFO L225 Difference]: With dead ends: 255 [2022-02-11 00:17:24,932 INFO L226 Difference]: Without dead ends: 250 [2022-02-11 00:17:24,932 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2022-02-11 00:17:24,933 INFO L934 BasicCegarLoop]: 13 mSDtfsCounter, 66 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:24,933 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 146 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:17:24,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-02-11 00:17:24,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 186. [2022-02-11 00:17:24,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 3.0108108108108107) internal successors, (557), 185 states have internal predecessors, (557), 0 states have call successors, (0), 0 states 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 00:17:24,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 557 transitions. [2022-02-11 00:17:24,936 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 557 transitions. Word has length 16 [2022-02-11 00:17:24,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:24,937 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 557 transitions. [2022-02-11 00:17:24,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 00:17:24,937 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 557 transitions. [2022-02-11 00:17:24,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-11 00:17:24,937 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:24,937 INFO L515 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:24,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:25,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:25,154 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:25,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:25,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1453808369, now seen corresponding path program 39 times [2022-02-11 00:17:25,155 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:25,155 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7605654] [2022-02-11 00:17:25,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:25,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:25,187 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 00:17:25,187 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:25,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7605654] [2022-02-11 00:17:25,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7605654] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:25,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077766382] [2022-02-11 00:17:25,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:17:25,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:25,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:25,188 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:25,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-11 00:17:25,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 00:17:25,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:25,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-11 00:17:25,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:25,235 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:25,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:25,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077766382] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:25,269 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:25,269 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 10 [2022-02-11 00:17:25,269 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297880745] [2022-02-11 00:17:25,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:25,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:17:25,270 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:25,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:17:25,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:25,270 INFO L87 Difference]: Start difference. First operand 186 states and 557 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:25,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:25,327 INFO L93 Difference]: Finished difference Result 299 states and 749 transitions. [2022-02-11 00:17:25,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:17:25,327 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-02-11 00:17:25,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:25,328 INFO L225 Difference]: With dead ends: 299 [2022-02-11 00:17:25,328 INFO L226 Difference]: Without dead ends: 299 [2022-02-11 00:17:25,329 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-02-11 00:17:25,329 INFO L934 BasicCegarLoop]: 6 mSDtfsCounter, 49 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:25,329 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 39 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:17:25,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-02-11 00:17:25,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 185. [2022-02-11 00:17:25,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.9347826086956523) internal successors, (540), 184 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 00:17:25,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 540 transitions. [2022-02-11 00:17:25,333 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 540 transitions. Word has length 16 [2022-02-11 00:17:25,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:25,333 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 540 transitions. [2022-02-11 00:17:25,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:25,333 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 540 transitions. [2022-02-11 00:17:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-11 00:17:25,333 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:25,333 INFO L515 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:25,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:25,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:25,534 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:25,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:25,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1474814577, now seen corresponding path program 40 times [2022-02-11 00:17:25,534 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:25,534 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628716884] [2022-02-11 00:17:25,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:25,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:25,588 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 00:17:25,588 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:25,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628716884] [2022-02-11 00:17:25,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628716884] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:25,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836081351] [2022-02-11 00:17:25,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:17:25,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:25,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:25,615 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:25,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-11 00:17:25,637 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:17:25,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:25,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-11 00:17:25,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:25,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:25,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836081351] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:25,697 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:25,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-02-11 00:17:25,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116650459] [2022-02-11 00:17:25,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:25,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-11 00:17:25,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:25,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-11 00:17:25,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:17:25,699 INFO L87 Difference]: Start difference. First operand 185 states and 540 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:25,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:25,856 INFO L93 Difference]: Finished difference Result 326 states and 773 transitions. [2022-02-11 00:17:25,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-11 00:17:25,856 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-02-11 00:17:25,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:25,857 INFO L225 Difference]: With dead ends: 326 [2022-02-11 00:17:25,858 INFO L226 Difference]: Without dead ends: 326 [2022-02-11 00:17:25,858 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2022-02-11 00:17:25,858 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 76 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:25,858 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 63 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:25,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-02-11 00:17:25,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 193. [2022-02-11 00:17:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.953125) internal successors, (567), 192 states have internal predecessors, (567), 0 states have call successors, (0), 0 states 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 00:17:25,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 567 transitions. [2022-02-11 00:17:25,862 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 567 transitions. Word has length 16 [2022-02-11 00:17:25,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:25,862 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 567 transitions. [2022-02-11 00:17:25,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:17:25,862 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 567 transitions. [2022-02-11 00:17:25,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:25,863 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:25,863 INFO L515 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:25,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-02-11 00:17:26,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:26,071 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:26,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:26,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1462987570, now seen corresponding path program 41 times [2022-02-11 00:17:26,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:26,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941567285] [2022-02-11 00:17:26,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:26,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:26,106 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:26,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941567285] [2022-02-11 00:17:26,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941567285] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:26,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597156846] [2022-02-11 00:17:26,106 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:17:26,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:26,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:26,108 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:26,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-11 00:17:26,129 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 00:17:26,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:26,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:26,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:26,156 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:26,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:26,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597156846] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:26,182 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:26,182 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2022-02-11 00:17:26,182 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364815993] [2022-02-11 00:17:26,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:26,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:17:26,182 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:26,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:17:26,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:26,183 INFO L87 Difference]: Start difference. First operand 193 states and 567 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:26,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:26,320 INFO L93 Difference]: Finished difference Result 317 states and 771 transitions. [2022-02-11 00:17:26,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-11 00:17:26,321 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:26,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:26,322 INFO L225 Difference]: With dead ends: 317 [2022-02-11 00:17:26,322 INFO L226 Difference]: Without dead ends: 310 [2022-02-11 00:17:26,322 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2022-02-11 00:17:26,322 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 71 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:26,323 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 45 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:26,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-02-11 00:17:26,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 184. [2022-02-11 00:17:26,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.939890710382514) internal successors, (538), 183 states have internal predecessors, (538), 0 states have call successors, (0), 0 states 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 00:17:26,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 538 transitions. [2022-02-11 00:17:26,326 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 538 transitions. Word has length 17 [2022-02-11 00:17:26,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:26,326 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 538 transitions. [2022-02-11 00:17:26,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:26,326 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 538 transitions. [2022-02-11 00:17:26,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:26,327 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:26,327 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:26,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:26,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-02-11 00:17:26,540 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:26,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:26,541 INFO L85 PathProgramCache]: Analyzing trace with hash -745811074, now seen corresponding path program 42 times [2022-02-11 00:17:26,541 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:26,541 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39432465] [2022-02-11 00:17:26,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:26,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:26,593 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:26,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39432465] [2022-02-11 00:17:26,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39432465] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:26,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792062631] [2022-02-11 00:17:26,593 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:17:26,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:26,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:26,594 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:26,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-11 00:17:26,632 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:17:26,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:26,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:26,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:26,664 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:26,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:26,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792062631] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:26,690 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:26,690 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2022-02-11 00:17:26,690 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156241900] [2022-02-11 00:17:26,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:26,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:17:26,690 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:26,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:17:26,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:26,691 INFO L87 Difference]: Start difference. First operand 184 states and 538 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:26,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:26,787 INFO L93 Difference]: Finished difference Result 299 states and 722 transitions. [2022-02-11 00:17:26,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:17:26,787 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:26,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:26,788 INFO L225 Difference]: With dead ends: 299 [2022-02-11 00:17:26,788 INFO L226 Difference]: Without dead ends: 295 [2022-02-11 00:17:26,788 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:17:26,789 INFO L934 BasicCegarLoop]: 21 mSDtfsCounter, 60 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:26,789 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 89 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:26,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-02-11 00:17:26,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 197. [2022-02-11 00:17:26,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.9183673469387754) internal successors, (572), 196 states have internal predecessors, (572), 0 states have call successors, (0), 0 states 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 00:17:26,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 572 transitions. [2022-02-11 00:17:26,792 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 572 transitions. Word has length 17 [2022-02-11 00:17:26,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:26,792 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 572 transitions. [2022-02-11 00:17:26,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:26,792 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 572 transitions. [2022-02-11 00:17:26,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:26,793 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:26,793 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:26,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:27,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-02-11 00:17:27,011 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:27,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:27,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1076606828, now seen corresponding path program 43 times [2022-02-11 00:17:27,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:27,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264834312] [2022-02-11 00:17:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:27,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:27,056 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:27,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264834312] [2022-02-11 00:17:27,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264834312] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:27,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883078082] [2022-02-11 00:17:27,057 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:17:27,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:27,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:27,058 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:27,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-11 00:17:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:27,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:27,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:27,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:27,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883078082] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:27,140 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:27,140 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2022-02-11 00:17:27,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292006008] [2022-02-11 00:17:27,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:27,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:17:27,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:27,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:17:27,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:17:27,141 INFO L87 Difference]: Start difference. First operand 197 states and 572 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:27,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:27,251 INFO L93 Difference]: Finished difference Result 234 states and 626 transitions. [2022-02-11 00:17:27,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-11 00:17:27,251 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:27,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:27,252 INFO L225 Difference]: With dead ends: 234 [2022-02-11 00:17:27,252 INFO L226 Difference]: Without dead ends: 230 [2022-02-11 00:17:27,253 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:17:27,253 INFO L934 BasicCegarLoop]: 7 mSDtfsCounter, 31 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:27,253 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 33 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:27,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-02-11 00:17:27,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 199. [2022-02-11 00:17:27,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.878787878787879) internal successors, (570), 198 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 00:17:27,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 570 transitions. [2022-02-11 00:17:27,256 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 570 transitions. Word has length 17 [2022-02-11 00:17:27,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:27,256 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 570 transitions. [2022-02-11 00:17:27,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:27,257 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 570 transitions. [2022-02-11 00:17:27,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:27,257 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:27,257 INFO L515 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:27,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:27,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:27,475 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:27,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:27,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1641887374, now seen corresponding path program 44 times [2022-02-11 00:17:27,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:27,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986421856] [2022-02-11 00:17:27,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:27,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:27,507 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:27,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986421856] [2022-02-11 00:17:27,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986421856] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:27,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073521233] [2022-02-11 00:17:27,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:17:27,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:27,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:27,509 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:27,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-11 00:17:27,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:17:27,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:27,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:27,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:27,556 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:27,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:27,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073521233] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:27,578 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:27,578 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2022-02-11 00:17:27,578 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319880053] [2022-02-11 00:17:27,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:27,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:17:27,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:27,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:17:27,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:17:27,579 INFO L87 Difference]: Start difference. First operand 199 states and 570 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:27,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:27,636 INFO L93 Difference]: Finished difference Result 316 states and 753 transitions. [2022-02-11 00:17:27,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-11 00:17:27,636 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:27,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:27,637 INFO L225 Difference]: With dead ends: 316 [2022-02-11 00:17:27,637 INFO L226 Difference]: Without dead ends: 316 [2022-02-11 00:17:27,637 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:27,638 INFO L934 BasicCegarLoop]: 6 mSDtfsCounter, 57 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:27,638 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 37 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:27,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-02-11 00:17:27,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 200. [2022-02-11 00:17:27,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.879396984924623) internal successors, (573), 199 states have internal predecessors, (573), 0 states have call successors, (0), 0 states 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 00:17:27,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 573 transitions. [2022-02-11 00:17:27,646 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 573 transitions. Word has length 17 [2022-02-11 00:17:27,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:27,646 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 573 transitions. [2022-02-11 00:17:27,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:27,646 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 573 transitions. [2022-02-11 00:17:27,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:27,646 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:27,646 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:27,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:27,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-02-11 00:17:27,859 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:27,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:27,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1160930252, now seen corresponding path program 45 times [2022-02-11 00:17:27,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:27,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047157841] [2022-02-11 00:17:27,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:27,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:27,899 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:27,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047157841] [2022-02-11 00:17:27,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047157841] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:27,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307094538] [2022-02-11 00:17:27,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:17:27,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:27,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:27,901 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:27,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-11 00:17:27,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-11 00:17:27,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:27,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:27,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:27,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:27,974 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307094538] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:27,974 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:27,974 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2022-02-11 00:17:27,974 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914898593] [2022-02-11 00:17:27,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:27,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:17:27,975 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:27,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:17:27,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:17:27,975 INFO L87 Difference]: Start difference. First operand 200 states and 573 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:28,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:28,060 INFO L93 Difference]: Finished difference Result 257 states and 683 transitions. [2022-02-11 00:17:28,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:17:28,060 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:28,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:28,061 INFO L225 Difference]: With dead ends: 257 [2022-02-11 00:17:28,061 INFO L226 Difference]: Without dead ends: 253 [2022-02-11 00:17:28,061 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:17:28,062 INFO L934 BasicCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:28,062 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 41 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:28,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-02-11 00:17:28,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 202. [2022-02-11 00:17:28,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.8656716417910446) internal successors, (576), 201 states have internal predecessors, (576), 0 states have call successors, (0), 0 states 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 00:17:28,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 576 transitions. [2022-02-11 00:17:28,065 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 576 transitions. Word has length 17 [2022-02-11 00:17:28,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:28,065 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 576 transitions. [2022-02-11 00:17:28,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:28,065 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 576 transitions. [2022-02-11 00:17:28,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:28,066 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:28,066 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:28,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-02-11 00:17:28,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-02-11 00:17:28,275 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:28,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:28,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1805102996, now seen corresponding path program 46 times [2022-02-11 00:17:28,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:28,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536399119] [2022-02-11 00:17:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:28,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:28,317 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:28,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536399119] [2022-02-11 00:17:28,317 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536399119] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:28,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735194511] [2022-02-11 00:17:28,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:17:28,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:28,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:28,320 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:28,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-11 00:17:28,342 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:17:28,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:28,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:28,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:28,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:28,393 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:28,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735194511] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:28,394 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:28,394 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2022-02-11 00:17:28,394 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689138724] [2022-02-11 00:17:28,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:28,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:17:28,394 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:28,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:17:28,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:17:28,395 INFO L87 Difference]: Start difference. First operand 202 states and 576 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:28,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:28,465 INFO L93 Difference]: Finished difference Result 253 states and 666 transitions. [2022-02-11 00:17:28,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-11 00:17:28,465 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:28,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:28,466 INFO L225 Difference]: With dead ends: 253 [2022-02-11 00:17:28,466 INFO L226 Difference]: Without dead ends: 247 [2022-02-11 00:17:28,467 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-02-11 00:17:28,467 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 39 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:28,467 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 31 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:28,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-02-11 00:17:28,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 206. [2022-02-11 00:17:28,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.8341463414634145) internal successors, (581), 205 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 00:17:28,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 581 transitions. [2022-02-11 00:17:28,471 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 581 transitions. Word has length 17 [2022-02-11 00:17:28,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:28,471 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 581 transitions. [2022-02-11 00:17:28,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:28,471 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 581 transitions. [2022-02-11 00:17:28,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:28,471 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:28,471 INFO L515 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:28,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:28,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:28,688 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:28,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:28,688 INFO L85 PathProgramCache]: Analyzing trace with hash -487645636, now seen corresponding path program 47 times [2022-02-11 00:17:28,688 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:28,688 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865104670] [2022-02-11 00:17:28,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:28,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:28,718 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:28,719 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:28,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865104670] [2022-02-11 00:17:28,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865104670] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:28,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303308393] [2022-02-11 00:17:28,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:17:28,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:28,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:28,720 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:28,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-11 00:17:28,742 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 00:17:28,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:28,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:28,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:17:28,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:17:28,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303308393] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:28,791 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:28,791 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-02-11 00:17:28,791 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730106249] [2022-02-11 00:17:28,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:28,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:17:28,791 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:28,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:17:28,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:17:28,792 INFO L87 Difference]: Start difference. First operand 206 states and 581 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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 00:17:28,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:28,863 INFO L93 Difference]: Finished difference Result 308 states and 773 transitions. [2022-02-11 00:17:28,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-11 00:17:28,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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 17 [2022-02-11 00:17:28,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:28,864 INFO L225 Difference]: With dead ends: 308 [2022-02-11 00:17:28,864 INFO L226 Difference]: Without dead ends: 306 [2022-02-11 00:17:28,864 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:17:28,865 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 46 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:28,865 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 23 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:28,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-02-11 00:17:28,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 231. [2022-02-11 00:17:28,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 2.860869565217391) internal successors, (658), 230 states have internal predecessors, (658), 0 states have call successors, (0), 0 states 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 00:17:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 658 transitions. [2022-02-11 00:17:28,869 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 658 transitions. Word has length 17 [2022-02-11 00:17:28,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:28,869 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 658 transitions. [2022-02-11 00:17:28,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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 00:17:28,869 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 658 transitions. [2022-02-11 00:17:28,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:28,870 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:28,870 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:28,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:29,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:29,075 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:29,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:29,076 INFO L85 PathProgramCache]: Analyzing trace with hash 2029341068, now seen corresponding path program 48 times [2022-02-11 00:17:29,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:29,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583576064] [2022-02-11 00:17:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:29,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:29,118 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:29,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583576064] [2022-02-11 00:17:29,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583576064] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:29,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419786500] [2022-02-11 00:17:29,118 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:17:29,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:29,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:29,119 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:29,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-11 00:17:29,141 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:17:29,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:29,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:29,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:17:29,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:29,193 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:17:29,193 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419786500] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:29,193 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:29,193 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-02-11 00:17:29,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701333536] [2022-02-11 00:17:29,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:29,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-11 00:17:29,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:29,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-11 00:17:29,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-02-11 00:17:29,194 INFO L87 Difference]: Start difference. First operand 231 states and 658 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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 00:17:29,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:29,245 INFO L93 Difference]: Finished difference Result 351 states and 885 transitions. [2022-02-11 00:17:29,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:17:29,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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 17 [2022-02-11 00:17:29,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:29,247 INFO L225 Difference]: With dead ends: 351 [2022-02-11 00:17:29,247 INFO L226 Difference]: Without dead ends: 351 [2022-02-11 00:17:29,247 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:17:29,247 INFO L934 BasicCegarLoop]: 13 mSDtfsCounter, 36 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:29,247 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 54 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:17:29,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-02-11 00:17:29,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 241. [2022-02-11 00:17:29,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.8958333333333335) internal successors, (695), 240 states have internal predecessors, (695), 0 states have call successors, (0), 0 states 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 00:17:29,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 695 transitions. [2022-02-11 00:17:29,251 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 695 transitions. Word has length 17 [2022-02-11 00:17:29,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:29,251 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 695 transitions. [2022-02-11 00:17:29,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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 00:17:29,251 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 695 transitions. [2022-02-11 00:17:29,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:29,252 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:29,252 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:29,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:29,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-02-11 00:17:29,469 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:29,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:29,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1362203856, now seen corresponding path program 49 times [2022-02-11 00:17:29,470 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:29,470 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851848496] [2022-02-11 00:17:29,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:29,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:29,506 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:29,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851848496] [2022-02-11 00:17:29,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851848496] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:29,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33469959] [2022-02-11 00:17:29,506 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:17:29,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:29,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:29,508 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:29,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-11 00:17:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:29,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:29,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:29,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:29,581 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:29,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33469959] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:29,581 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:29,581 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2022-02-11 00:17:29,581 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812634223] [2022-02-11 00:17:29,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:29,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:17:29,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:29,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:17:29,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:17:29,582 INFO L87 Difference]: Start difference. First operand 241 states and 695 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:29,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:29,665 INFO L93 Difference]: Finished difference Result 327 states and 850 transitions. [2022-02-11 00:17:29,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:17:29,665 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:29,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:29,666 INFO L225 Difference]: With dead ends: 327 [2022-02-11 00:17:29,666 INFO L226 Difference]: Without dead ends: 315 [2022-02-11 00:17:29,667 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:17:29,667 INFO L934 BasicCegarLoop]: 9 mSDtfsCounter, 43 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:29,667 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 37 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:29,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-02-11 00:17:29,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 245. [2022-02-11 00:17:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 2.877049180327869) internal successors, (702), 244 states have internal predecessors, (702), 0 states have call successors, (0), 0 states 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 00:17:29,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 702 transitions. [2022-02-11 00:17:29,671 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 702 transitions. Word has length 17 [2022-02-11 00:17:29,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:29,671 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 702 transitions. [2022-02-11 00:17:29,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:29,672 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 702 transitions. [2022-02-11 00:17:29,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:29,672 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:29,672 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:29,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:29,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:29,889 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:29,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:29,890 INFO L85 PathProgramCache]: Analyzing trace with hash 299621580, now seen corresponding path program 50 times [2022-02-11 00:17:29,890 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:29,890 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693398374] [2022-02-11 00:17:29,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:29,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:29,933 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:29,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:29,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693398374] [2022-02-11 00:17:29,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693398374] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:29,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82351465] [2022-02-11 00:17:29,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:17:29,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:29,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:29,935 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:29,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-11 00:17:29,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:17:29,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:29,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:29,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:29,985 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:29,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:30,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82351465] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:30,015 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:30,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2022-02-11 00:17:30,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005374088] [2022-02-11 00:17:30,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:30,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:17:30,015 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:30,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:17:30,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:30,015 INFO L87 Difference]: Start difference. First operand 245 states and 702 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:30,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:30,118 INFO L93 Difference]: Finished difference Result 345 states and 888 transitions. [2022-02-11 00:17:30,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-11 00:17:30,118 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:30,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:30,119 INFO L225 Difference]: With dead ends: 345 [2022-02-11 00:17:30,119 INFO L226 Difference]: Without dead ends: 337 [2022-02-11 00:17:30,119 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:17:30,120 INFO L934 BasicCegarLoop]: 9 mSDtfsCounter, 46 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:30,120 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 47 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:30,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-02-11 00:17:30,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 251. [2022-02-11 00:17:30,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 2.856) internal successors, (714), 250 states have internal predecessors, (714), 0 states have call successors, (0), 0 states 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 00:17:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 714 transitions. [2022-02-11 00:17:30,124 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 714 transitions. Word has length 17 [2022-02-11 00:17:30,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:30,124 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 714 transitions. [2022-02-11 00:17:30,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:30,125 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 714 transitions. [2022-02-11 00:17:30,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:30,125 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:30,125 INFO L515 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:30,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:30,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-02-11 00:17:30,339 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:30,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:30,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1332617088, now seen corresponding path program 51 times [2022-02-11 00:17:30,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:30,340 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174628939] [2022-02-11 00:17:30,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:30,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:30,374 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:30,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174628939] [2022-02-11 00:17:30,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174628939] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:30,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276398645] [2022-02-11 00:17:30,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:17:30,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:30,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:30,375 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:30,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-11 00:17:30,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 00:17:30,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:30,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:30,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:30,421 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:30,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:30,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276398645] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:30,446 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:30,446 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2022-02-11 00:17:30,446 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726274579] [2022-02-11 00:17:30,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:30,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-11 00:17:30,447 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:30,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-11 00:17:30,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:17:30,447 INFO L87 Difference]: Start difference. First operand 251 states and 714 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 00:17:30,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:30,532 INFO L93 Difference]: Finished difference Result 371 states and 919 transitions. [2022-02-11 00:17:30,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-11 00:17:30,532 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:30,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:30,534 INFO L225 Difference]: With dead ends: 371 [2022-02-11 00:17:30,534 INFO L226 Difference]: Without dead ends: 367 [2022-02-11 00:17:30,534 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2022-02-11 00:17:30,534 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 40 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:30,534 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 43 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:30,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-02-11 00:17:30,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 239. [2022-02-11 00:17:30,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 2.831932773109244) internal successors, (674), 238 states have internal predecessors, (674), 0 states have call successors, (0), 0 states 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 00:17:30,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 674 transitions. [2022-02-11 00:17:30,539 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 674 transitions. Word has length 17 [2022-02-11 00:17:30,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:30,539 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 674 transitions. [2022-02-11 00:17:30,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 00:17:30,539 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 674 transitions. [2022-02-11 00:17:30,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:30,540 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:30,540 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:30,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:30,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-02-11 00:17:30,755 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:30,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:30,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1184369616, now seen corresponding path program 52 times [2022-02-11 00:17:30,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:30,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287764813] [2022-02-11 00:17:30,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:30,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:30,787 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:30,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287764813] [2022-02-11 00:17:30,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287764813] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:30,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344383383] [2022-02-11 00:17:30,787 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:17:30,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:30,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:30,789 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:30,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-11 00:17:30,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:17:30,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:30,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:30,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:30,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:30,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344383383] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:30,863 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:30,863 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2022-02-11 00:17:30,863 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202045048] [2022-02-11 00:17:30,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:30,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-11 00:17:30,864 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:30,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-11 00:17:30,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:17:30,864 INFO L87 Difference]: Start difference. First operand 239 states and 674 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 00:17:30,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:30,920 INFO L93 Difference]: Finished difference Result 404 states and 1011 transitions. [2022-02-11 00:17:30,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-11 00:17:30,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:30,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:30,922 INFO L225 Difference]: With dead ends: 404 [2022-02-11 00:17:30,922 INFO L226 Difference]: Without dead ends: 404 [2022-02-11 00:17:30,922 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:17:30,923 INFO L934 BasicCegarLoop]: 14 mSDtfsCounter, 47 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:30,923 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 59 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:17:30,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-02-11 00:17:30,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 261. [2022-02-11 00:17:30,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 2.9153846153846152) internal successors, (758), 260 states have internal predecessors, (758), 0 states have call successors, (0), 0 states 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 00:17:30,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 758 transitions. [2022-02-11 00:17:30,929 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 758 transitions. Word has length 17 [2022-02-11 00:17:30,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:30,929 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 758 transitions. [2022-02-11 00:17:30,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 00:17:30,929 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 758 transitions. [2022-02-11 00:17:30,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:30,930 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:30,930 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:30,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:31,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:31,146 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:31,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:31,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1951496084, now seen corresponding path program 53 times [2022-02-11 00:17:31,147 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:31,147 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171487561] [2022-02-11 00:17:31,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:31,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:31,184 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:31,185 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:31,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171487561] [2022-02-11 00:17:31,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171487561] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:31,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033209545] [2022-02-11 00:17:31,185 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:17:31,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:31,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:31,186 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:31,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-11 00:17:31,212 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 00:17:31,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:31,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:31,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:31,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:31,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033209545] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:31,277 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:31,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2022-02-11 00:17:31,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638438609] [2022-02-11 00:17:31,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:31,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-11 00:17:31,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:31,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-11 00:17:31,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:17:31,277 INFO L87 Difference]: Start difference. First operand 261 states and 758 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 00:17:31,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:31,366 INFO L93 Difference]: Finished difference Result 392 states and 991 transitions. [2022-02-11 00:17:31,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-11 00:17:31,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:31,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:31,368 INFO L225 Difference]: With dead ends: 392 [2022-02-11 00:17:31,368 INFO L226 Difference]: Without dead ends: 390 [2022-02-11 00:17:31,368 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2022-02-11 00:17:31,369 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 60 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:31,369 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 57 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:31,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-02-11 00:17:31,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 261. [2022-02-11 00:17:31,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 2.9076923076923076) internal successors, (756), 260 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 00:17:31,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 756 transitions. [2022-02-11 00:17:31,374 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 756 transitions. Word has length 17 [2022-02-11 00:17:31,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:31,374 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 756 transitions. [2022-02-11 00:17:31,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 00:17:31,374 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 756 transitions. [2022-02-11 00:17:31,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:31,375 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:31,375 INFO L515 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:31,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:31,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:31,592 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:31,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:31,592 INFO L85 PathProgramCache]: Analyzing trace with hash 375022990, now seen corresponding path program 54 times [2022-02-11 00:17:31,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:31,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211503660] [2022-02-11 00:17:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:31,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:31,633 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:31,633 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:31,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211503660] [2022-02-11 00:17:31,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211503660] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:31,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660519531] [2022-02-11 00:17:31,634 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:17:31,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:31,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:31,635 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:31,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-11 00:17:31,658 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-11 00:17:31,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:31,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:31,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:31,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:31,713 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:31,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660519531] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:31,713 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:31,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2022-02-11 00:17:31,714 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521180328] [2022-02-11 00:17:31,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:31,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-11 00:17:31,714 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:31,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-11 00:17:31,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:17:31,714 INFO L87 Difference]: Start difference. First operand 261 states and 756 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 00:17:31,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:31,771 INFO L93 Difference]: Finished difference Result 358 states and 902 transitions. [2022-02-11 00:17:31,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-11 00:17:31,771 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:31,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:31,772 INFO L225 Difference]: With dead ends: 358 [2022-02-11 00:17:31,772 INFO L226 Difference]: Without dead ends: 358 [2022-02-11 00:17:31,773 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:31,773 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 36 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:31,773 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 45 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:17:31,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-02-11 00:17:31,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 262. [2022-02-11 00:17:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 2.900383141762452) internal successors, (757), 261 states have internal predecessors, (757), 0 states have call successors, (0), 0 states 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 00:17:31,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 757 transitions. [2022-02-11 00:17:31,789 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 757 transitions. Word has length 17 [2022-02-11 00:17:31,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:31,789 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 757 transitions. [2022-02-11 00:17:31,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 00:17:31,789 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 757 transitions. [2022-02-11 00:17:31,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:31,790 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:31,790 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:31,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:32,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-02-11 00:17:32,008 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:32,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:32,008 INFO L85 PathProgramCache]: Analyzing trace with hash 517232404, now seen corresponding path program 55 times [2022-02-11 00:17:32,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:32,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601431600] [2022-02-11 00:17:32,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:32,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:32,046 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:32,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601431600] [2022-02-11 00:17:32,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601431600] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:32,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584838091] [2022-02-11 00:17:32,046 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:17:32,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:32,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:32,047 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:32,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-11 00:17:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:32,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:32,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:32,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:32,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584838091] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:32,117 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:32,117 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2022-02-11 00:17:32,117 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610432307] [2022-02-11 00:17:32,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:32,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:17:32,117 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:32,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:17:32,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:17:32,118 INFO L87 Difference]: Start difference. First operand 262 states and 757 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:32,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:32,198 INFO L93 Difference]: Finished difference Result 365 states and 959 transitions. [2022-02-11 00:17:32,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-11 00:17:32,198 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:32,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:32,199 INFO L225 Difference]: With dead ends: 365 [2022-02-11 00:17:32,199 INFO L226 Difference]: Without dead ends: 355 [2022-02-11 00:17:32,200 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:17:32,200 INFO L934 BasicCegarLoop]: 9 mSDtfsCounter, 47 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:32,200 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 39 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:17:32,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-02-11 00:17:32,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 272. [2022-02-11 00:17:32,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 2.92619926199262) internal successors, (793), 271 states have internal predecessors, (793), 0 states have call successors, (0), 0 states 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 00:17:32,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 793 transitions. [2022-02-11 00:17:32,205 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 793 transitions. Word has length 17 [2022-02-11 00:17:32,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:32,205 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 793 transitions. [2022-02-11 00:17:32,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:32,205 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 793 transitions. [2022-02-11 00:17:32,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:32,206 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:32,206 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:32,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:32,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-02-11 00:17:32,415 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:32,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:32,416 INFO L85 PathProgramCache]: Analyzing trace with hash -545349872, now seen corresponding path program 56 times [2022-02-11 00:17:32,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:32,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447833890] [2022-02-11 00:17:32,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:32,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:32,469 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:32,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:32,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447833890] [2022-02-11 00:17:32,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447833890] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:32,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505168134] [2022-02-11 00:17:32,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:17:32,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:32,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:32,470 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:32,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-11 00:17:32,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:17:32,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:32,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:32,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:32,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:32,560 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:32,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505168134] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:32,560 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:32,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2022-02-11 00:17:32,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162951479] [2022-02-11 00:17:32,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:32,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:17:32,561 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:32,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:17:32,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:32,561 INFO L87 Difference]: Start difference. First operand 272 states and 793 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:32,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:32,655 INFO L93 Difference]: Finished difference Result 389 states and 1009 transitions. [2022-02-11 00:17:32,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-11 00:17:32,655 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:32,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:32,657 INFO L225 Difference]: With dead ends: 389 [2022-02-11 00:17:32,657 INFO L226 Difference]: Without dead ends: 381 [2022-02-11 00:17:32,658 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2022-02-11 00:17:32,658 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 59 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:32,658 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 38 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:32,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-02-11 00:17:32,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 270. [2022-02-11 00:17:32,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 2.925650557620818) internal successors, (787), 269 states have internal predecessors, (787), 0 states have call successors, (0), 0 states 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 00:17:32,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 787 transitions. [2022-02-11 00:17:32,663 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 787 transitions. Word has length 17 [2022-02-11 00:17:32,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:32,663 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 787 transitions. [2022-02-11 00:17:32,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:32,663 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 787 transitions. [2022-02-11 00:17:32,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:32,664 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:32,664 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:32,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-02-11 00:17:32,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:32,879 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:32,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:32,880 INFO L85 PathProgramCache]: Analyzing trace with hash 874337940, now seen corresponding path program 57 times [2022-02-11 00:17:32,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:32,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013900131] [2022-02-11 00:17:32,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:32,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:32,921 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:32,922 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:32,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013900131] [2022-02-11 00:17:32,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013900131] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:32,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416422342] [2022-02-11 00:17:32,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:17:32,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:32,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:32,923 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:32,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-11 00:17:32,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 00:17:32,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:32,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:32,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:32,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:33,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416422342] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:33,004 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:33,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2022-02-11 00:17:33,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509660526] [2022-02-11 00:17:33,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:33,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:17:33,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:33,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:17:33,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:33,005 INFO L87 Difference]: Start difference. First operand 270 states and 787 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:33,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:33,068 INFO L93 Difference]: Finished difference Result 333 states and 909 transitions. [2022-02-11 00:17:33,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-11 00:17:33,068 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:33,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:33,069 INFO L225 Difference]: With dead ends: 333 [2022-02-11 00:17:33,070 INFO L226 Difference]: Without dead ends: 323 [2022-02-11 00:17:33,070 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-02-11 00:17:33,070 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 40 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:33,070 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 41 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:17:33,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-02-11 00:17:33,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 270. [2022-02-11 00:17:33,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 2.9219330855018586) internal successors, (786), 269 states have internal predecessors, (786), 0 states have call successors, (0), 0 states 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 00:17:33,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 786 transitions. [2022-02-11 00:17:33,074 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 786 transitions. Word has length 17 [2022-02-11 00:17:33,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:33,074 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 786 transitions. [2022-02-11 00:17:33,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:33,075 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 786 transitions. [2022-02-11 00:17:33,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:33,075 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:33,075 INFO L515 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:33,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:33,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-02-11 00:17:33,284 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:33,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:33,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1756928324, now seen corresponding path program 58 times [2022-02-11 00:17:33,284 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:33,284 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822146232] [2022-02-11 00:17:33,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:33,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:33,324 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:33,325 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:33,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822146232] [2022-02-11 00:17:33,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822146232] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:33,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730539640] [2022-02-11 00:17:33,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:17:33,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:33,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:33,326 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:33,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-11 00:17:33,349 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:17:33,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:33,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:33,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:33,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:33,398 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:33,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730539640] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:33,399 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:33,399 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2022-02-11 00:17:33,399 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751990491] [2022-02-11 00:17:33,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:33,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:17:33,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:33,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:17:33,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:17:33,400 INFO L87 Difference]: Start difference. First operand 270 states and 786 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:33,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:33,499 INFO L93 Difference]: Finished difference Result 416 states and 1041 transitions. [2022-02-11 00:17:33,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-11 00:17:33,499 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:33,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:33,501 INFO L225 Difference]: With dead ends: 416 [2022-02-11 00:17:33,501 INFO L226 Difference]: Without dead ends: 414 [2022-02-11 00:17:33,501 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:17:33,501 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 52 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:33,502 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 45 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:33,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-02-11 00:17:33,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 285. [2022-02-11 00:17:33,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 2.9401408450704225) internal successors, (835), 284 states have internal predecessors, (835), 0 states have call successors, (0), 0 states 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 00:17:33,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 835 transitions. [2022-02-11 00:17:33,506 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 835 transitions. Word has length 17 [2022-02-11 00:17:33,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:33,507 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 835 transitions. [2022-02-11 00:17:33,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:33,507 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 835 transitions. [2022-02-11 00:17:33,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:33,507 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:33,507 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:33,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:33,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-02-11 00:17:33,723 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:33,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:33,724 INFO L85 PathProgramCache]: Analyzing trace with hash 760058380, now seen corresponding path program 59 times [2022-02-11 00:17:33,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:33,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437963109] [2022-02-11 00:17:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:33,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:33,760 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:33,760 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437963109] [2022-02-11 00:17:33,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437963109] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:33,760 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90466902] [2022-02-11 00:17:33,760 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:17:33,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:33,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:33,761 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:33,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-11 00:17:33,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 00:17:33,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:33,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:33,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:33,809 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:33,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:33,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90466902] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:33,834 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:33,834 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2022-02-11 00:17:33,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982295479] [2022-02-11 00:17:33,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:33,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:17:33,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:33,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:17:33,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:17:33,835 INFO L87 Difference]: Start difference. First operand 285 states and 835 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:33,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:33,889 INFO L93 Difference]: Finished difference Result 481 states and 1230 transitions. [2022-02-11 00:17:33,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-11 00:17:33,890 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:33,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:33,891 INFO L225 Difference]: With dead ends: 481 [2022-02-11 00:17:33,891 INFO L226 Difference]: Without dead ends: 481 [2022-02-11 00:17:33,892 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:33,892 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 60 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:33,892 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 58 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:17:33,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-02-11 00:17:33,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 321. [2022-02-11 00:17:33,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 3.015625) internal successors, (965), 320 states have internal predecessors, (965), 0 states have call successors, (0), 0 states 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 00:17:33,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 965 transitions. [2022-02-11 00:17:33,898 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 965 transitions. Word has length 17 [2022-02-11 00:17:33,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:33,898 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 965 transitions. [2022-02-11 00:17:33,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:33,898 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 965 transitions. [2022-02-11 00:17:33,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:33,899 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:33,899 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:33,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-02-11 00:17:34,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:34,104 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:34,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:34,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1527184848, now seen corresponding path program 60 times [2022-02-11 00:17:34,105 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:34,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558840463] [2022-02-11 00:17:34,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:34,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:34,160 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:34,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:34,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558840463] [2022-02-11 00:17:34,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558840463] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:34,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988645776] [2022-02-11 00:17:34,161 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:17:34,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:34,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:34,162 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:34,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-11 00:17:34,186 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:17:34,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:34,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:34,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:34,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:34,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988645776] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:34,237 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:34,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2022-02-11 00:17:34,237 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035302293] [2022-02-11 00:17:34,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:34,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:17:34,237 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:34,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:17:34,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:17:34,238 INFO L87 Difference]: Start difference. First operand 321 states and 965 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:34,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:34,334 INFO L93 Difference]: Finished difference Result 471 states and 1213 transitions. [2022-02-11 00:17:34,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-11 00:17:34,334 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:34,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:34,336 INFO L225 Difference]: With dead ends: 471 [2022-02-11 00:17:34,336 INFO L226 Difference]: Without dead ends: 469 [2022-02-11 00:17:34,336 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:17:34,336 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 66 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:34,337 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 62 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-02-11 00:17:34,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 310. [2022-02-11 00:17:34,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 2.9805825242718447) internal successors, (921), 309 states have internal predecessors, (921), 0 states have call successors, (0), 0 states 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 00:17:34,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 921 transitions. [2022-02-11 00:17:34,342 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 921 transitions. Word has length 17 [2022-02-11 00:17:34,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:34,342 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 921 transitions. [2022-02-11 00:17:34,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:34,342 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 921 transitions. [2022-02-11 00:17:34,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:34,343 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:34,343 INFO L515 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:34,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:34,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2022-02-11 00:17:34,560 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:34,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:34,560 INFO L85 PathProgramCache]: Analyzing trace with hash -49288246, now seen corresponding path program 61 times [2022-02-11 00:17:34,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:34,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155061079] [2022-02-11 00:17:34,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:34,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:34,600 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:34,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:34,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155061079] [2022-02-11 00:17:34,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155061079] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:34,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23437947] [2022-02-11 00:17:34,601 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:17:34,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:34,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:34,602 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:34,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-11 00:17:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:34,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:34,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:34,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:34,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23437947] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:34,676 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:34,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2022-02-11 00:17:34,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235281779] [2022-02-11 00:17:34,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:34,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:17:34,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:34,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:17:34,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:17:34,677 INFO L87 Difference]: Start difference. First operand 310 states and 921 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:34,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:34,742 INFO L93 Difference]: Finished difference Result 447 states and 1145 transitions. [2022-02-11 00:17:34,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:17:34,742 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:34,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:34,744 INFO L225 Difference]: With dead ends: 447 [2022-02-11 00:17:34,744 INFO L226 Difference]: Without dead ends: 447 [2022-02-11 00:17:34,744 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:17:34,744 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 46 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:34,744 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 54 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:17:34,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-02-11 00:17:34,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 291. [2022-02-11 00:17:34,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 2.9517241379310346) internal successors, (856), 290 states have internal predecessors, (856), 0 states have call successors, (0), 0 states 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 00:17:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 856 transitions. [2022-02-11 00:17:34,749 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 856 transitions. Word has length 17 [2022-02-11 00:17:34,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:34,749 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 856 transitions. [2022-02-11 00:17:34,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:34,749 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 856 transitions. [2022-02-11 00:17:34,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:34,750 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:34,750 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:34,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-02-11 00:17:34,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:34,967 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:34,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:34,968 INFO L85 PathProgramCache]: Analyzing trace with hash 542840012, now seen corresponding path program 62 times [2022-02-11 00:17:34,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:34,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335462776] [2022-02-11 00:17:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:34,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:35,004 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:35,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:35,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335462776] [2022-02-11 00:17:35,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335462776] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:35,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402567245] [2022-02-11 00:17:35,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:17:35,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:35,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:35,006 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:35,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-11 00:17:35,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:17:35,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:35,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:35,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:35,051 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:35,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:35,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402567245] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:35,077 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:35,077 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2022-02-11 00:17:35,077 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946230567] [2022-02-11 00:17:35,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:35,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:17:35,077 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:35,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:17:35,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:17:35,077 INFO L87 Difference]: Start difference. First operand 291 states and 856 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:35,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:35,164 INFO L93 Difference]: Finished difference Result 467 states and 1208 transitions. [2022-02-11 00:17:35,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:17:35,164 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:35,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:35,166 INFO L225 Difference]: With dead ends: 467 [2022-02-11 00:17:35,166 INFO L226 Difference]: Without dead ends: 463 [2022-02-11 00:17:35,166 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:17:35,166 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 77 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:35,166 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 52 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:17:35,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-02-11 00:17:35,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 291. [2022-02-11 00:17:35,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 2.9448275862068964) internal successors, (854), 290 states have internal predecessors, (854), 0 states have call successors, (0), 0 states 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 00:17:35,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 854 transitions. [2022-02-11 00:17:35,172 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 854 transitions. Word has length 17 [2022-02-11 00:17:35,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:35,172 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 854 transitions. [2022-02-11 00:17:35,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:35,172 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 854 transitions. [2022-02-11 00:17:35,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:35,173 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:35,173 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:35,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-02-11 00:17:35,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:35,391 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:35,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:35,391 INFO L85 PathProgramCache]: Analyzing trace with hash 92921168, now seen corresponding path program 63 times [2022-02-11 00:17:35,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:35,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003229304] [2022-02-11 00:17:35,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:35,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:35,427 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:35,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003229304] [2022-02-11 00:17:35,427 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003229304] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:35,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945951446] [2022-02-11 00:17:35,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:17:35,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:35,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:35,428 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:35,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-11 00:17:35,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:17:35,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:35,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:35,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:35,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:35,501 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:17:35,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945951446] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:35,501 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:35,502 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2022-02-11 00:17:35,502 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938645050] [2022-02-11 00:17:35,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:35,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:17:35,502 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:35,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:17:35,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:17:35,502 INFO L87 Difference]: Start difference. First operand 291 states and 854 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:35,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:35,582 INFO L93 Difference]: Finished difference Result 424 states and 1105 transitions. [2022-02-11 00:17:35,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-11 00:17:35,582 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:35,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:35,583 INFO L225 Difference]: With dead ends: 424 [2022-02-11 00:17:35,583 INFO L226 Difference]: Without dead ends: 418 [2022-02-11 00:17:35,584 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:17:35,584 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 45 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:35,584 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 62 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:17:35,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-02-11 00:17:35,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 291. [2022-02-11 00:17:35,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 2.9379310344827587) internal successors, (852), 290 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 00:17:35,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 852 transitions. [2022-02-11 00:17:35,589 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 852 transitions. Word has length 17 [2022-02-11 00:17:35,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:35,589 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 852 transitions. [2022-02-11 00:17:35,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:35,589 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 852 transitions. [2022-02-11 00:17:35,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:35,590 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:35,590 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:35,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:35,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:35,795 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:35,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:35,796 INFO L85 PathProgramCache]: Analyzing trace with hash -969661108, now seen corresponding path program 64 times [2022-02-11 00:17:35,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:35,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549554753] [2022-02-11 00:17:35,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:35,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:35,841 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:35,842 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:35,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549554753] [2022-02-11 00:17:35,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549554753] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:35,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270402893] [2022-02-11 00:17:35,842 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:17:35,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:35,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:35,843 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:35,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-11 00:17:35,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:17:35,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:35,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:35,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:35,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:35,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270402893] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:35,923 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:35,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2022-02-11 00:17:35,923 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284020075] [2022-02-11 00:17:35,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:35,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:17:35,923 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:35,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:17:35,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:35,924 INFO L87 Difference]: Start difference. First operand 291 states and 852 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:36,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:36,009 INFO L93 Difference]: Finished difference Result 416 states and 1089 transitions. [2022-02-11 00:17:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 00:17:36,010 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:36,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:36,011 INFO L225 Difference]: With dead ends: 416 [2022-02-11 00:17:36,011 INFO L226 Difference]: Without dead ends: 408 [2022-02-11 00:17:36,011 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2022-02-11 00:17:36,011 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 56 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:36,012 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 47 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:17:36,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-02-11 00:17:36,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 302. [2022-02-11 00:17:36,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 2.9501661129568104) internal successors, (888), 301 states have internal predecessors, (888), 0 states have call successors, (0), 0 states 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 00:17:36,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 888 transitions. [2022-02-11 00:17:36,016 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 888 transitions. Word has length 17 [2022-02-11 00:17:36,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:36,017 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 888 transitions. [2022-02-11 00:17:36,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:36,017 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 888 transitions. [2022-02-11 00:17:36,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:36,017 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:36,017 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:36,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-02-11 00:17:36,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-02-11 00:17:36,220 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:36,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:36,221 INFO L85 PathProgramCache]: Analyzing trace with hash 450026704, now seen corresponding path program 65 times [2022-02-11 00:17:36,221 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:36,221 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625509744] [2022-02-11 00:17:36,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:36,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:36,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:36,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625509744] [2022-02-11 00:17:36,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625509744] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:36,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562594880] [2022-02-11 00:17:36,261 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:17:36,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:36,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:36,262 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:36,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-11 00:17:36,283 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-11 00:17:36,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:36,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:36,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:36,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:36,338 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562594880] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:36,338 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:36,338 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2022-02-11 00:17:36,338 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318184225] [2022-02-11 00:17:36,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:36,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:17:36,338 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:36,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:17:36,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:36,339 INFO L87 Difference]: Start difference. First operand 302 states and 888 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:36,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:36,390 INFO L93 Difference]: Finished difference Result 369 states and 1018 transitions. [2022-02-11 00:17:36,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-11 00:17:36,391 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:36,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:36,392 INFO L225 Difference]: With dead ends: 369 [2022-02-11 00:17:36,392 INFO L226 Difference]: Without dead ends: 359 [2022-02-11 00:17:36,392 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-02-11 00:17:36,392 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 50 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:36,393 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 38 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:17:36,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-02-11 00:17:36,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 302. [2022-02-11 00:17:36,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 2.946843853820598) internal successors, (887), 301 states have internal predecessors, (887), 0 states have call successors, (0), 0 states 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 00:17:36,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 887 transitions. [2022-02-11 00:17:36,397 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 887 transitions. Word has length 17 [2022-02-11 00:17:36,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:36,397 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 887 transitions. [2022-02-11 00:17:36,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:36,397 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 887 transitions. [2022-02-11 00:17:36,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:36,398 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:36,398 INFO L515 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:36,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-02-11 00:17:36,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:36,599 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:36,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:36,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1510675916, now seen corresponding path program 66 times [2022-02-11 00:17:36,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:36,599 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142115691] [2022-02-11 00:17:36,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:36,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:36,657 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:36,658 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:36,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142115691] [2022-02-11 00:17:36,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142115691] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:36,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291970664] [2022-02-11 00:17:36,658 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:17:36,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:36,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:36,659 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:36,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-11 00:17:36,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:17:36,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:36,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:36,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:36,706 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:36,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:36,733 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:36,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291970664] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:36,734 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:36,734 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2022-02-11 00:17:36,734 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981301344] [2022-02-11 00:17:36,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:36,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:17:36,734 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:36,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:17:36,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:36,734 INFO L87 Difference]: Start difference. First operand 302 states and 887 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:36,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:36,778 INFO L93 Difference]: Finished difference Result 367 states and 1014 transitions. [2022-02-11 00:17:36,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-11 00:17:36,778 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:36,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:36,780 INFO L225 Difference]: With dead ends: 367 [2022-02-11 00:17:36,780 INFO L226 Difference]: Without dead ends: 355 [2022-02-11 00:17:36,780 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-02-11 00:17:36,781 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 52 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:36,781 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 40 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:17:36,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-02-11 00:17:36,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 300. [2022-02-11 00:17:36,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 2.9531772575250836) internal successors, (883), 299 states have internal predecessors, (883), 0 states have call successors, (0), 0 states 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 00:17:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 883 transitions. [2022-02-11 00:17:36,787 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 883 transitions. Word has length 17 [2022-02-11 00:17:36,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:36,787 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 883 transitions. [2022-02-11 00:17:36,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:36,787 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 883 transitions. [2022-02-11 00:17:36,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:17:36,788 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:36,788 INFO L515 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:36,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-02-11 00:17:37,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:37,005 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:37,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:37,005 INFO L85 PathProgramCache]: Analyzing trace with hash 173252366, now seen corresponding path program 67 times [2022-02-11 00:17:37,005 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:37,005 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377692116] [2022-02-11 00:17:37,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:37,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:37,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:37,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377692116] [2022-02-11 00:17:37,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377692116] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:37,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294307025] [2022-02-11 00:17:37,054 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:17:37,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:37,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:37,056 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:37,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-11 00:17:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:37,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:17:37,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:37,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:37,144 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:37,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294307025] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:17:37,144 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:17:37,144 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2022-02-11 00:17:37,144 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881551857] [2022-02-11 00:17:37,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:17:37,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-11 00:17:37,145 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:17:37,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-11 00:17:37,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-02-11 00:17:37,145 INFO L87 Difference]: Start difference. First operand 300 states and 883 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:37,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:17:37,241 INFO L93 Difference]: Finished difference Result 421 states and 1132 transitions. [2022-02-11 00:17:37,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-11 00:17:37,241 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:17:37,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:17:37,242 INFO L225 Difference]: With dead ends: 421 [2022-02-11 00:17:37,242 INFO L226 Difference]: Without dead ends: 421 [2022-02-11 00:17:37,243 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2022-02-11 00:17:37,243 INFO L934 BasicCegarLoop]: 4 mSDtfsCounter, 29 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:17:37,243 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 27 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:17:37,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-02-11 00:17:37,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 310. [2022-02-11 00:17:37,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 2.9449838187702264) internal successors, (910), 309 states have internal predecessors, (910), 0 states have call successors, (0), 0 states 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 00:17:37,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 910 transitions. [2022-02-11 00:17:37,248 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 910 transitions. Word has length 17 [2022-02-11 00:17:37,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:17:37,248 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 910 transitions. [2022-02-11 00:17:37,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:17:37,248 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 910 transitions. [2022-02-11 00:17:37,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:17:37,249 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:17:37,249 INFO L515 BasicCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:17:37,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-02-11 00:17:37,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-02-11 00:17:37,463 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:17:37,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:17:37,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1618681331, now seen corresponding path program 68 times [2022-02-11 00:17:37,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:17:37,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332971754] [2022-02-11 00:17:37,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:17:37,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:17:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:17:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:37,562 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:17:37,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332971754] [2022-02-11 00:17:37,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332971754] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:17:37,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163635899] [2022-02-11 00:17:37,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:17:37,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:17:37,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:17:37,564 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:17:37,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-11 00:17:37,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:17:37,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:17:37,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 00:17:37,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:17:37,925 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:17:37,925 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 15 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 282 [2022-02-11 00:17:39,733 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:17:39,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:17:40,412 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:17:40,412 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 24 new quantified variables, introduced 78 case distinctions, treesize of input 63 treesize of output 682 [2022-02-11 00:22:19,661 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:22:19,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163635899] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:22:19,661 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:22:19,661 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-02-11 00:22:19,661 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813076847] [2022-02-11 00:22:19,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:22:19,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-11 00:22:19,662 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:22:19,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-11 00:22:19,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=959, Unknown=0, NotChecked=0, Total=1056 [2022-02-11 00:22:19,662 INFO L87 Difference]: Start difference. First operand 310 states and 910 transitions. Second operand has 33 states, 33 states have (on average 1.393939393939394) internal successors, (46), 32 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 00:22:20,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:22:20,111 INFO L93 Difference]: Finished difference Result 382 states and 1061 transitions. [2022-02-11 00:22:20,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-11 00:22:20,111 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.393939393939394) internal successors, (46), 32 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-02-11 00:22:20,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:22:20,112 INFO L225 Difference]: With dead ends: 382 [2022-02-11 00:22:20,112 INFO L226 Difference]: Without dead ends: 355 [2022-02-11 00:22:20,113 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=1414, Unknown=0, NotChecked=0, Total=1560 [2022-02-11 00:22:20,113 INFO L934 BasicCegarLoop]: 5 mSDtfsCounter, 55 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:22:20,113 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 59 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:22:20,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-02-11 00:22:20,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 326. [2022-02-11 00:22:20,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 2.9507692307692306) internal successors, (959), 325 states have internal predecessors, (959), 0 states have call successors, (0), 0 states 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 00:22:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 959 transitions. [2022-02-11 00:22:20,118 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 959 transitions. Word has length 18 [2022-02-11 00:22:20,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:22:20,118 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 959 transitions. [2022-02-11 00:22:20,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.393939393939394) internal successors, (46), 32 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 00:22:20,118 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 959 transitions. [2022-02-11 00:22:20,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-11 00:22:20,118 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:22:20,118 INFO L515 BasicCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:22:20,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-02-11 00:22:20,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-02-11 00:22:20,319 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:22:20,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:22:20,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1178610163, now seen corresponding path program 69 times [2022-02-11 00:22:20,319 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:22:20,319 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354973334] [2022-02-11 00:22:20,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:22:20,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:22:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:22:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:22:20,412 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:22:20,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354973334] [2022-02-11 00:22:20,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354973334] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:22:20,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645612634] [2022-02-11 00:22:20,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:22:20,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:22:20,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:22:20,413 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:22:20,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-11 00:22:20,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-11 00:22:20,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:22:20,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 00:22:20,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:22:20,729 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:22:20,730 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 15 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 282 [2022-02-11 00:22:27,053 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:22:27,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:22:27,673 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-11 00:22:27,673 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 24 new quantified variables, introduced 78 case distinctions, treesize of input 63 treesize of output 682 Received shutdown request... [2022-02-11 00:24:00,841 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-02-11 00:24:00,842 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-11 00:24:00,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-02-11 00:24:00,869 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-11 00:24:00,878 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 00:24:01,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:24:01,054 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 6,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 15ms.. [2022-02-11 00:24:01,055 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-11 00:24:01,056 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-11 00:24:01,058 INFO L733 BasicCegarLoop]: Path program histogram: [69, 9, 2, 1] [2022-02-11 00:24:01,059 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-11 00:24:01,059 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-11 00:24:01,060 INFO L202 PluginConnector]: Adding new model unroll-cond-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.02 12:24:01 BasicIcfg [2022-02-11 00:24:01,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-11 00:24:01,060 INFO L158 Benchmark]: Toolchain (without parser) took 810085.72ms. Allocated memory was 179.3MB in the beginning and 766.5MB in the end (delta: 587.2MB). Free memory was 142.7MB in the beginning and 292.7MB in the end (delta: -150.0MB). Peak memory consumption was 467.3MB. Max. memory is 8.0GB. [2022-02-11 00:24:01,060 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 179.3MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-11 00:24:01,061 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.50ms. Allocated memory is still 179.3MB. Free memory was 142.7MB in the beginning and 141.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-11 00:24:01,061 INFO L158 Benchmark]: Boogie Preprocessor took 16.97ms. Allocated memory is still 179.3MB. Free memory was 141.1MB in the beginning and 140.2MB in the end (delta: 931.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-11 00:24:01,061 INFO L158 Benchmark]: RCFGBuilder took 253.63ms. Allocated memory is still 179.3MB. Free memory was 140.2MB in the beginning and 129.3MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-11 00:24:01,061 INFO L158 Benchmark]: TraceAbstraction took 809791.08ms. Allocated memory was 179.3MB in the beginning and 766.5MB in the end (delta: 587.2MB). Free memory was 128.8MB in the beginning and 292.7MB in the end (delta: -163.9MB). Peak memory consumption was 453.7MB. Max. memory is 8.0GB. [2022-02-11 00:24:01,061 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 0.09ms. Allocated memory is still 179.3MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.50ms. Allocated memory is still 179.3MB. Free memory was 142.7MB in the beginning and 141.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.97ms. Allocated memory is still 179.3MB. Free memory was 141.1MB in the beginning and 140.2MB in the end (delta: 931.0kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 253.63ms. Allocated memory is still 179.3MB. Free memory was 140.2MB in the beginning and 129.3MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 809791.08ms. Allocated memory was 179.3MB in the beginning and 766.5MB in the end (delta: 587.2MB). Free memory was 128.8MB in the beginning and 292.7MB in the end (delta: -163.9MB). Peak memory consumption was 453.7MB. 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: 61]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 19 with TraceHistMax 6,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 15ms.. - TimeoutResultAtElement [Line: 56]: 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 19 with TraceHistMax 6,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 15ms.. - TimeoutResultAtElement [Line: 56]: 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 19 with TraceHistMax 6,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 15ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 809.7s, OverallIterations: 81, TraceHistogramMax: 6, PathProgramHistogramMax: 69, EmptinessCheckTime: 0.1s, AutomataDifference: 22.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4001 SdHoareTripleChecker+Valid, 9.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4001 mSDsluCounter, 4921 SdHoareTripleChecker+Invalid, 7.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9405 mSDsCounter, 2204 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20684 IncrementalHoareTripleChecker+Invalid, 22888 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2204 mSolverCounterUnsat, 754 mSDtfsCounter, 20684 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3423 GetRequests, 1698 SyntacticMatches, 109 SemanticMatches, 1616 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10906 ImplicationChecksByTransitivity, 19.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=326occurred in iteration=80, InterpolantAutomatonStates: 1348, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 80 MinimizatonAttempts, 5490 StatesRemovedByMinimization, 78 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 667.6s InterpolantComputationTime, 2355 NumberOfCodeBlocks, 2355 NumberOfCodeBlocksAsserted, 261 NumberOfCheckSat, 3278 ConstructedInterpolants, 0 QuantifiedInterpolants, 30646 SizeOfPredicates, 238 NumberOfNonLiveVariables, 4331 ConjunctsInSsa, 1368 ConjunctsInUnsatCore, 232 InterpolantComputations, 4 PerfectInterpolantSequences, 925/2952 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