/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/nonblocking-cntr.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-11 00:54:56,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-11 00:54:56,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-11 00:54:57,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-11 00:54:57,056 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 00:54:57,069 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-11 00:54:57,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-11 00:54:57,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-11 00:54:57,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-11 00:54:57,070 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-11 00:54:57,070 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-11 00:54:57,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-11 00:54:57,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-11 00:54:57,071 INFO L138 SettingsManager]: * Use SBE=true [2022-02-11 00:54:57,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-11 00:54:57,071 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-11 00:54:57,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-11 00:54:57,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-11 00:54:57,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-11 00:54:57,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-11 00:54:57,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-11 00:54:57,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-11 00:54:57,072 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-11 00:54:57,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-11 00:54:57,072 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-11 00:54:57,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-11 00:54:57,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-11 00:54:57,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-11 00:54:57,072 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-11 00:54:57,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-11 00:54:57,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-11 00:54:57,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-11 00:54:57,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-11 00:54:57,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-11 00:54:57,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-11 00:54:57,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-11 00:54:57,073 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-11 00:54:57,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-11 00:54:57,074 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-11 00:54:57,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-11 00:54:57,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-11 00:54:57,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-11 00:54:57,277 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-11 00:54:57,278 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-11 00:54:57,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/nonblocking-cntr.wvr.bpl [2022-02-11 00:54:57,279 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/nonblocking-cntr.wvr.bpl' [2022-02-11 00:54:57,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-11 00:54:57,294 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-11 00:54:57,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-11 00:54:57,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-11 00:54:57,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-11 00:54:57,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nonblocking-cntr.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:54:57" (1/1) ... [2022-02-11 00:54:57,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nonblocking-cntr.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:54:57" (1/1) ... [2022-02-11 00:54:57,311 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-11 00:54:57,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-11 00:54:57,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-11 00:54:57,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-11 00:54:57,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-11 00:54:57,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nonblocking-cntr.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:54:57" (1/1) ... [2022-02-11 00:54:57,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nonblocking-cntr.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:54:57" (1/1) ... [2022-02-11 00:54:57,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nonblocking-cntr.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:54:57" (1/1) ... [2022-02-11 00:54:57,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nonblocking-cntr.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:54:57" (1/1) ... [2022-02-11 00:54:57,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nonblocking-cntr.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:54:57" (1/1) ... [2022-02-11 00:54:57,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nonblocking-cntr.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:54:57" (1/1) ... [2022-02-11 00:54:57,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nonblocking-cntr.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:54:57" (1/1) ... [2022-02-11 00:54:57,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-11 00:54:57,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-11 00:54:57,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-11 00:54:57,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-11 00:54:57,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nonblocking-cntr.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:54:57" (1/1) ... [2022-02-11 00:54:57,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-11 00:54:57,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:54:57,350 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 00:54:57,373 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 00:54:57,406 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-11 00:54:57,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-11 00:54:57,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-11 00:54:57,407 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-11 00:54:57,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-11 00:54:57,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-11 00:54:57,408 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-11 00:54:57,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-11 00:54:57,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-11 00:54:57,409 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 00:54:57,442 INFO L234 CfgBuilder]: Building ICFG [2022-02-11 00:54:57,443 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-11 00:54:57,505 INFO L275 CfgBuilder]: Performing block encoding [2022-02-11 00:54:57,514 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-11 00:54:57,514 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-11 00:54:57,516 INFO L202 PluginConnector]: Adding new model nonblocking-cntr.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 12:54:57 BoogieIcfgContainer [2022-02-11 00:54:57,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-11 00:54:57,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-11 00:54:57,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-11 00:54:57,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-11 00:54:57,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nonblocking-cntr.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 12:54:57" (1/2) ... [2022-02-11 00:54:57,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1830f0fe and model type nonblocking-cntr.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.02 12:54:57, skipping insertion in model container [2022-02-11 00:54:57,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nonblocking-cntr.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 12:54:57" (2/2) ... [2022-02-11 00:54:57,521 INFO L112 eAbstractionObserver]: Analyzing ICFG nonblocking-cntr.wvr.bpl [2022-02-11 00:54:57,524 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-11 00:54:57,525 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-11 00:54:57,525 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-11 00:54:57,525 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-11 00:54:57,571 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-11 00:54:57,614 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-11 00:54:57,621 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 00:54:57,621 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-11 00:54:57,628 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 23 transitions, 62 flow [2022-02-11 00:54:57,644 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 33 states, 32 states have (on average 1.78125) internal successors, (57), 32 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 00:54:57,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 32 states have (on average 1.78125) internal successors, (57), 32 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 00:54:57,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-11 00:54:57,649 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:54:57,649 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:54:57,650 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:54:57,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:54:57,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1631855703, now seen corresponding path program 1 times [2022-02-11 00:54:57,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:54:57,664 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516303137] [2022-02-11 00:54:57,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:54:57,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:54:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:54:57,768 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 00:54:57,768 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:54:57,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516303137] [2022-02-11 00:54:57,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516303137] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:54:57,769 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:54:57,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-11 00:54:57,770 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132784889] [2022-02-11 00:54:57,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:54:57,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-11 00:54:57,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:54:57,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-11 00:54:57,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-11 00:54:57,800 INFO L87 Difference]: Start difference. First operand has 33 states, 32 states have (on average 1.78125) internal successors, (57), 32 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) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:54:57,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:54:57,867 INFO L93 Difference]: Finished difference Result 43 states and 77 transitions. [2022-02-11 00:54:57,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-11 00:54:57,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-02-11 00:54:57,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:54:57,887 INFO L225 Difference]: With dead ends: 43 [2022-02-11 00:54:57,887 INFO L226 Difference]: Without dead ends: 43 [2022-02-11 00:54:57,889 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:54:57,892 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:54:57,894 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 30 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:54:57,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-02-11 00:54:57,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2022-02-11 00:54:57,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 37 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:54:57,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 67 transitions. [2022-02-11 00:54:57,929 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 67 transitions. Word has length 15 [2022-02-11 00:54:57,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:54:57,929 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 67 transitions. [2022-02-11 00:54:57,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:54:57,930 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 67 transitions. [2022-02-11 00:54:57,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-11 00:54:57,937 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:54:57,937 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:54:57,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-11 00:54:57,939 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:54:57,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:54:57,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1473491929, now seen corresponding path program 1 times [2022-02-11 00:54:57,941 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:54:57,942 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951197090] [2022-02-11 00:54:57,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:54:57,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:54:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:54:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:54:58,023 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:54:58,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951197090] [2022-02-11 00:54:58,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951197090] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-11 00:54:58,023 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-11 00:54:58,023 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-11 00:54:58,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535874021] [2022-02-11 00:54:58,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-11 00:54:58,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-11 00:54:58,025 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:54:58,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-11 00:54:58,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-11 00:54:58,025 INFO L87 Difference]: Start difference. First operand 38 states and 67 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:54:58,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:54:58,076 INFO L93 Difference]: Finished difference Result 50 states and 91 transitions. [2022-02-11 00:54:58,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-11 00:54:58,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-11 00:54:58,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:54:58,079 INFO L225 Difference]: With dead ends: 50 [2022-02-11 00:54:58,079 INFO L226 Difference]: Without dead ends: 50 [2022-02-11 00:54:58,080 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-11 00:54:58,084 INFO L934 BasicCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:54:58,084 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 27 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:54:58,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-02-11 00:54:58,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2022-02-11 00:54:58,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.8372093023255813) internal successors, (79), 43 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:54:58,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 79 transitions. [2022-02-11 00:54:58,094 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 79 transitions. Word has length 17 [2022-02-11 00:54:58,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:54:58,094 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 79 transitions. [2022-02-11 00:54:58,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:54:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 79 transitions. [2022-02-11 00:54:58,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-11 00:54:58,096 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:54:58,096 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:54:58,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-11 00:54:58,096 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:54:58,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:54:58,097 INFO L85 PathProgramCache]: Analyzing trace with hash 917506533, now seen corresponding path program 1 times [2022-02-11 00:54:58,097 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:54:58,097 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547262191] [2022-02-11 00:54:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:54:58,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:54:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:54:58,201 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 00:54:58,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:54:58,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547262191] [2022-02-11 00:54:58,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547262191] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:54:58,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087376529] [2022-02-11 00:54:58,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:54:58,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:54:58,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:54:58,204 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 00:54:58,205 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 00:54:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:54:58,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-11 00:54:58,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:54:58,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:54:58,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:54:58,473 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 00:54:58,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087376529] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:54:58,473 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:54:58,473 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 6 [2022-02-11 00:54:58,473 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138646058] [2022-02-11 00:54:58,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:54:58,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-11 00:54:58,475 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:54:58,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-11 00:54:58,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-11 00:54:58,479 INFO L87 Difference]: Start difference. First operand 44 states and 79 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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 00:54:58,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:54:58,531 INFO L93 Difference]: Finished difference Result 99 states and 185 transitions. [2022-02-11 00:54:58,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-11 00:54:58,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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 19 [2022-02-11 00:54:58,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:54:58,535 INFO L225 Difference]: With dead ends: 99 [2022-02-11 00:54:58,535 INFO L226 Difference]: Without dead ends: 78 [2022-02-11 00:54:58,535 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-11 00:54:58,536 INFO L934 BasicCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:54:58,536 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 58 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:54:58,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-02-11 00:54:58,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 59. [2022-02-11 00:54:58,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.9310344827586208) internal successors, (112), 58 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:54:58,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 112 transitions. [2022-02-11 00:54:58,542 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 112 transitions. Word has length 19 [2022-02-11 00:54:58,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:54:58,542 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 112 transitions. [2022-02-11 00:54:58,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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 00:54:58,543 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 112 transitions. [2022-02-11 00:54:58,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-11 00:54:58,543 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:54:58,543 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:54:58,562 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 00:54:58,759 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 00:54:58,760 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:54:58,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:54:58,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1069238711, now seen corresponding path program 2 times [2022-02-11 00:54:58,761 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:54:58,761 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400893712] [2022-02-11 00:54:58,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:54:58,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:54:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:54:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:54:58,803 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:54:58,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400893712] [2022-02-11 00:54:58,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400893712] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:54:58,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266426925] [2022-02-11 00:54:58,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:54:58,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:54:58,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:54:58,812 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 00:54:58,813 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 00:54:58,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:54:58,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:54:58,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-11 00:54:58,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:54:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:54:58,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:54:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:54:59,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266426925] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:54:59,030 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:54:59,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-02-11 00:54:59,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399108608] [2022-02-11 00:54:59,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:54:59,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-11 00:54:59,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:54:59,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-11 00:54:59,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:54:59,031 INFO L87 Difference]: Start difference. First operand 59 states and 112 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:54:59,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:54:59,065 INFO L93 Difference]: Finished difference Result 80 states and 151 transitions. [2022-02-11 00:54:59,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:54:59,065 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-11 00:54:59,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:54:59,066 INFO L225 Difference]: With dead ends: 80 [2022-02-11 00:54:59,066 INFO L226 Difference]: Without dead ends: 77 [2022-02-11 00:54:59,066 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-02-11 00:54:59,067 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:54:59,067 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 59 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:54:59,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-02-11 00:54:59,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 61. [2022-02-11 00:54:59,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 60 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:54:59,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 116 transitions. [2022-02-11 00:54:59,072 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 116 transitions. Word has length 19 [2022-02-11 00:54:59,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:54:59,072 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 116 transitions. [2022-02-11 00:54:59,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:54:59,072 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 116 transitions. [2022-02-11 00:54:59,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:54:59,073 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:54:59,073 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:54:59,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-11 00:54:59,289 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 00:54:59,289 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:54:59,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:54:59,290 INFO L85 PathProgramCache]: Analyzing trace with hash 859525155, now seen corresponding path program 3 times [2022-02-11 00:54:59,290 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:54:59,290 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926801624] [2022-02-11 00:54:59,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:54:59,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:54:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:54:59,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:54:59,354 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:54:59,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926801624] [2022-02-11 00:54:59,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926801624] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:54:59,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955386041] [2022-02-11 00:54:59,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:54:59,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:54:59,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:54:59,361 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 00:54:59,362 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 00:54:59,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:54:59,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:54:59,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-11 00:54:59,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:54:59,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:54:59,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:54:59,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:54:59,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955386041] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:54:59,649 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:54:59,649 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-02-11 00:54:59,649 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220251808] [2022-02-11 00:54:59,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:54:59,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-11 00:54:59,650 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:54:59,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-11 00:54:59,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-02-11 00:54:59,651 INFO L87 Difference]: Start difference. First operand 61 states and 116 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:00,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:00,021 INFO L93 Difference]: Finished difference Result 208 states and 386 transitions. [2022-02-11 00:55:00,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-11 00:55:00,022 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-11 00:55:00,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:00,023 INFO L225 Difference]: With dead ends: 208 [2022-02-11 00:55:00,023 INFO L226 Difference]: Without dead ends: 202 [2022-02-11 00:55:00,023 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=367, Invalid=893, Unknown=0, NotChecked=0, Total=1260 [2022-02-11 00:55:00,024 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 213 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:00,024 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 93 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:55:00,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-02-11 00:55:00,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 90. [2022-02-11 00:55:00,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.033707865168539) internal successors, (181), 89 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:00,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 181 transitions. [2022-02-11 00:55:00,031 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 181 transitions. Word has length 21 [2022-02-11 00:55:00,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:00,031 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 181 transitions. [2022-02-11 00:55:00,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:00,032 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 181 transitions. [2022-02-11 00:55:00,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:55:00,032 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:00,032 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:00,063 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 00:55:00,249 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 00:55:00,249 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:00,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:00,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1109337493, now seen corresponding path program 4 times [2022-02-11 00:55:00,249 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:00,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824955560] [2022-02-11 00:55:00,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:00,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:00,320 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:00,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824955560] [2022-02-11 00:55:00,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824955560] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:00,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792783843] [2022-02-11 00:55:00,320 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:55:00,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:00,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:00,322 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 00:55:00,323 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 00:55:00,343 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:55:00,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:00,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-11 00:55:00,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:00,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:00,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:00,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:00,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792783843] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:00,676 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:00,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 15 [2022-02-11 00:55:00,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012683873] [2022-02-11 00:55:00,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:00,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-11 00:55:00,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:00,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-11 00:55:00,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2022-02-11 00:55:00,677 INFO L87 Difference]: Start difference. First operand 90 states and 181 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:00,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:00,951 INFO L93 Difference]: Finished difference Result 170 states and 325 transitions. [2022-02-11 00:55:00,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-11 00:55:00,952 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-11 00:55:00,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:00,953 INFO L225 Difference]: With dead ends: 170 [2022-02-11 00:55:00,953 INFO L226 Difference]: Without dead ends: 166 [2022-02-11 00:55:00,954 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=268, Invalid=602, Unknown=0, NotChecked=0, Total=870 [2022-02-11 00:55:00,956 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 136 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:00,957 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 44 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:55:00,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-02-11 00:55:00,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 92. [2022-02-11 00:55:00,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.010989010989011) internal successors, (183), 91 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:00,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 183 transitions. [2022-02-11 00:55:00,975 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 183 transitions. Word has length 21 [2022-02-11 00:55:00,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:00,977 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 183 transitions. [2022-02-11 00:55:00,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:00,977 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 183 transitions. [2022-02-11 00:55:00,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-11 00:55:00,978 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:00,978 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:01,007 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 00:55:01,178 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 00:55:01,179 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:01,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:01,179 INFO L85 PathProgramCache]: Analyzing trace with hash 446728737, now seen corresponding path program 5 times [2022-02-11 00:55:01,179 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:01,179 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284041701] [2022-02-11 00:55:01,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:01,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:01,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:01,231 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:01,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284041701] [2022-02-11 00:55:01,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284041701] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:01,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262289987] [2022-02-11 00:55:01,231 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:55:01,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:01,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:01,248 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 00:55:01,272 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 00:55:01,292 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:55:01,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:01,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-11 00:55:01,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:01,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:01,440 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:01,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262289987] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:01,441 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:01,441 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 9 [2022-02-11 00:55:01,441 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032796999] [2022-02-11 00:55:01,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:01,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-11 00:55:01,441 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:01,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-11 00:55:01,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:55:01,442 INFO L87 Difference]: Start difference. First operand 92 states and 183 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 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 00:55:01,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:01,474 INFO L93 Difference]: Finished difference Result 190 states and 376 transitions. [2022-02-11 00:55:01,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-11 00:55:01,474 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 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 23 [2022-02-11 00:55:01,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:01,475 INFO L225 Difference]: With dead ends: 190 [2022-02-11 00:55:01,475 INFO L226 Difference]: Without dead ends: 163 [2022-02-11 00:55:01,476 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-02-11 00:55:01,476 INFO L934 BasicCegarLoop]: 25 mSDtfsCounter, 50 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:01,476 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 103 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-11 00:55:01,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-02-11 00:55:01,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 120. [2022-02-11 00:55:01,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.0840336134453783) internal successors, (248), 119 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:01,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 248 transitions. [2022-02-11 00:55:01,480 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 248 transitions. Word has length 23 [2022-02-11 00:55:01,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:01,481 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 248 transitions. [2022-02-11 00:55:01,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 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 00:55:01,481 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 248 transitions. [2022-02-11 00:55:01,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-11 00:55:01,481 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:01,481 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:01,500 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 00:55:01,698 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 00:55:01,698 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:01,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:01,698 INFO L85 PathProgramCache]: Analyzing trace with hash -948358029, now seen corresponding path program 6 times [2022-02-11 00:55:01,699 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:01,699 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935188743] [2022-02-11 00:55:01,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:01,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:01,871 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:01,871 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:01,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935188743] [2022-02-11 00:55:01,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935188743] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:01,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3937903] [2022-02-11 00:55:01,872 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:55:01,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:01,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:01,888 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 00:55:01,941 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-11 00:55:01,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:01,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 00:55:01,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:01,944 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 00:55:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:02,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:02,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3937903] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:02,518 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:02,518 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2022-02-11 00:55:02,518 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648019341] [2022-02-11 00:55:02,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:02,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-11 00:55:02,518 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:02,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-11 00:55:02,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-02-11 00:55:02,519 INFO L87 Difference]: Start difference. First operand 120 states and 248 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 22 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:04,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:04,056 INFO L93 Difference]: Finished difference Result 529 states and 1017 transitions. [2022-02-11 00:55:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-11 00:55:04,057 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 22 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-11 00:55:04,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:04,058 INFO L225 Difference]: With dead ends: 529 [2022-02-11 00:55:04,059 INFO L226 Difference]: Without dead ends: 493 [2022-02-11 00:55:04,060 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=948, Invalid=2834, Unknown=0, NotChecked=0, Total=3782 [2022-02-11 00:55:04,060 INFO L934 BasicCegarLoop]: 12 mSDtfsCounter, 324 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:04,060 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 130 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:55:04,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-02-11 00:55:04,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 207. [2022-02-11 00:55:04,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 2.150485436893204) internal successors, (443), 206 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:04,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 443 transitions. [2022-02-11 00:55:04,069 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 443 transitions. Word has length 23 [2022-02-11 00:55:04,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:04,069 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 443 transitions. [2022-02-11 00:55:04,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 22 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 443 transitions. [2022-02-11 00:55:04,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-11 00:55:04,071 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:04,072 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:04,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-11 00:55:04,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:04,288 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:04,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:04,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1017367007, now seen corresponding path program 7 times [2022-02-11 00:55:04,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:04,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844983938] [2022-02-11 00:55:04,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:04,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:04,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:04,360 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:04,360 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844983938] [2022-02-11 00:55:04,360 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844983938] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:04,360 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111011974] [2022-02-11 00:55:04,360 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:55:04,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:04,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:04,361 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 00:55:04,362 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 00:55:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:04,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-11 00:55:04,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:04,535 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:04,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:04,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111011974] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:04,833 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:04,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-02-11 00:55:04,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782907988] [2022-02-11 00:55:04,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:04,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-11 00:55:04,834 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:04,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-11 00:55:04,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2022-02-11 00:55:04,835 INFO L87 Difference]: Start difference. First operand 207 states and 443 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:05,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:05,178 INFO L93 Difference]: Finished difference Result 415 states and 857 transitions. [2022-02-11 00:55:05,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-11 00:55:05,178 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-02-11 00:55:05,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:05,180 INFO L225 Difference]: With dead ends: 415 [2022-02-11 00:55:05,180 INFO L226 Difference]: Without dead ends: 411 [2022-02-11 00:55:05,181 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=326, Invalid=864, Unknown=0, NotChecked=0, Total=1190 [2022-02-11 00:55:05,181 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 229 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:05,181 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 67 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:55:05,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-02-11 00:55:05,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 259. [2022-02-11 00:55:05,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 2.197674418604651) internal successors, (567), 258 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 00:55:05,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 567 transitions. [2022-02-11 00:55:05,187 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 567 transitions. Word has length 23 [2022-02-11 00:55:05,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:05,188 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 567 transitions. [2022-02-11 00:55:05,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:05,188 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 567 transitions. [2022-02-11 00:55:05,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:55:05,188 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:05,188 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:05,211 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 00:55:05,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:05,389 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:05,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:05,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1216183969, now seen corresponding path program 8 times [2022-02-11 00:55:05,390 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:05,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784227713] [2022-02-11 00:55:05,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:05,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:05,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:05,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784227713] [2022-02-11 00:55:05,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784227713] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:05,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899254874] [2022-02-11 00:55:05,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:55:05,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:05,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:05,465 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 00:55:05,466 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 00:55:05,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:55:05,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:05,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-11 00:55:05,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:05,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:05,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899254874] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:05,899 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:05,899 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 24 [2022-02-11 00:55:05,899 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719170446] [2022-02-11 00:55:05,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:05,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-11 00:55:05,899 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:05,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-11 00:55:05,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2022-02-11 00:55:05,900 INFO L87 Difference]: Start difference. First operand 259 states and 567 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:06,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:06,540 INFO L93 Difference]: Finished difference Result 574 states and 1166 transitions. [2022-02-11 00:55:06,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-11 00:55:06,541 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-11 00:55:06,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:06,543 INFO L225 Difference]: With dead ends: 574 [2022-02-11 00:55:06,543 INFO L226 Difference]: Without dead ends: 553 [2022-02-11 00:55:06,544 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=769, Invalid=2201, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 00:55:06,544 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 199 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:06,544 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 132 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:55:06,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-02-11 00:55:06,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 235. [2022-02-11 00:55:06,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 2.1709401709401708) internal successors, (508), 234 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:06,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 508 transitions. [2022-02-11 00:55:06,552 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 508 transitions. Word has length 25 [2022-02-11 00:55:06,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:06,552 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 508 transitions. [2022-02-11 00:55:06,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:06,552 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 508 transitions. [2022-02-11 00:55:06,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-11 00:55:06,553 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:06,553 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:06,571 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 00:55:06,768 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,SelfDestructingSolverStorable9 [2022-02-11 00:55:06,769 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:06,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:06,769 INFO L85 PathProgramCache]: Analyzing trace with hash -580006123, now seen corresponding path program 9 times [2022-02-11 00:55:06,769 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:06,769 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264700945] [2022-02-11 00:55:06,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:06,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:06,849 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:06,849 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264700945] [2022-02-11 00:55:06,849 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264700945] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:06,849 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334694675] [2022-02-11 00:55:06,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:55:06,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:06,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:06,850 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 00:55:06,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-11 00:55:06,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:06,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-11 00:55:06,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:06,908 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 00:55:07,087 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:07,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:07,297 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:07,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334694675] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:07,297 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:07,297 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 20 [2022-02-11 00:55:07,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258577590] [2022-02-11 00:55:07,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:07,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-11 00:55:07,298 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:07,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-11 00:55:07,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2022-02-11 00:55:07,298 INFO L87 Difference]: Start difference. First operand 235 states and 508 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:07,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:07,716 INFO L93 Difference]: Finished difference Result 389 states and 796 transitions. [2022-02-11 00:55:07,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-11 00:55:07,716 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-11 00:55:07,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:07,717 INFO L225 Difference]: With dead ends: 389 [2022-02-11 00:55:07,717 INFO L226 Difference]: Without dead ends: 385 [2022-02-11 00:55:07,718 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=549, Invalid=1343, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 00:55:07,718 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 212 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:07,719 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 43 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:55:07,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-02-11 00:55:07,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 235. [2022-02-11 00:55:07,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 2.1666666666666665) internal successors, (507), 234 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 507 transitions. [2022-02-11 00:55:07,723 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 507 transitions. Word has length 25 [2022-02-11 00:55:07,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:07,723 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 507 transitions. [2022-02-11 00:55:07,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:07,724 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 507 transitions. [2022-02-11 00:55:07,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-11 00:55:07,724 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:07,724 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:07,748 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 00:55:07,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:07,940 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:07,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:07,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1444914083, now seen corresponding path program 10 times [2022-02-11 00:55:07,941 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:07,941 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921844294] [2022-02-11 00:55:07,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:07,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:08,016 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:08,017 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:08,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921844294] [2022-02-11 00:55:08,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921844294] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:08,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12487603] [2022-02-11 00:55:08,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:55:08,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:08,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:08,018 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 00:55:08,023 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 00:55:08,042 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:55:08,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:08,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-11 00:55:08,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:08,139 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:08,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:08,294 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:08,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12487603] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:08,294 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:08,294 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 9] total 12 [2022-02-11 00:55:08,294 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128981806] [2022-02-11 00:55:08,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:08,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-11 00:55:08,294 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:08,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-11 00:55:08,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:55:08,295 INFO L87 Difference]: Start difference. First operand 235 states and 507 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:08,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:08,363 INFO L93 Difference]: Finished difference Result 428 states and 902 transitions. [2022-02-11 00:55:08,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-11 00:55:08,363 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-11 00:55:08,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:08,367 INFO L225 Difference]: With dead ends: 428 [2022-02-11 00:55:08,367 INFO L226 Difference]: Without dead ends: 395 [2022-02-11 00:55:08,367 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-02-11 00:55:08,367 INFO L934 BasicCegarLoop]: 32 mSDtfsCounter, 101 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:08,368 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 151 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:55:08,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-02-11 00:55:08,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 313. [2022-02-11 00:55:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 2.217948717948718) internal successors, (692), 312 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 692 transitions. [2022-02-11 00:55:08,375 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 692 transitions. Word has length 27 [2022-02-11 00:55:08,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:08,375 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 692 transitions. [2022-02-11 00:55:08,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:08,375 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 692 transitions. [2022-02-11 00:55:08,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-11 00:55:08,376 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:08,376 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:08,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-11 00:55:08,591 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,SelfDestructingSolverStorable11 [2022-02-11 00:55:08,591 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:08,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:08,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1020645679, now seen corresponding path program 11 times [2022-02-11 00:55:08,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:08,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468665151] [2022-02-11 00:55:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:08,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:08,707 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:08,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468665151] [2022-02-11 00:55:08,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468665151] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:08,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830496823] [2022-02-11 00:55:08,707 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:55:08,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:08,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:08,708 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 00:55:08,709 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 00:55:08,729 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-11 00:55:08,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:08,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-11 00:55:08,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:08,945 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:08,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:09,460 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:09,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830496823] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:09,460 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:09,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2022-02-11 00:55:09,461 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097705118] [2022-02-11 00:55:09,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:09,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-11 00:55:09,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:09,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-11 00:55:09,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2022-02-11 00:55:09,463 INFO L87 Difference]: Start difference. First operand 313 states and 692 transitions. Second operand has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 28 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:12,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:12,364 INFO L93 Difference]: Finished difference Result 1070 states and 2162 transitions. [2022-02-11 00:55:12,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-11 00:55:12,364 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 28 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-11 00:55:12,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:12,367 INFO L225 Difference]: With dead ends: 1070 [2022-02-11 00:55:12,367 INFO L226 Difference]: Without dead ends: 989 [2022-02-11 00:55:12,368 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2262 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1613, Invalid=5193, Unknown=0, NotChecked=0, Total=6806 [2022-02-11 00:55:12,369 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 474 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:12,369 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 209 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:55:12,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2022-02-11 00:55:12,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 448. [2022-02-11 00:55:12,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 2.1834451901565997) internal successors, (976), 447 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:12,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 976 transitions. [2022-02-11 00:55:12,380 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 976 transitions. Word has length 27 [2022-02-11 00:55:12,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:12,380 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 976 transitions. [2022-02-11 00:55:12,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 28 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 976 transitions. [2022-02-11 00:55:12,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-11 00:55:12,381 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:12,381 INFO L515 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:12,398 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 00:55:12,596 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,SelfDestructingSolverStorable12 [2022-02-11 00:55:12,597 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:12,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:12,597 INFO L85 PathProgramCache]: Analyzing trace with hash 275669725, now seen corresponding path program 12 times [2022-02-11 00:55:12,597 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:12,597 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061701252] [2022-02-11 00:55:12,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:12,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:12,712 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:12,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:12,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061701252] [2022-02-11 00:55:12,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061701252] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:12,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477596964] [2022-02-11 00:55:12,713 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:55:12,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:12,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:12,724 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 00:55:12,724 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 00:55:12,746 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-11 00:55:12,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:12,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-11 00:55:12,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:12,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:13,305 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:13,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477596964] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:13,305 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:13,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 26 [2022-02-11 00:55:13,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639745233] [2022-02-11 00:55:13,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:13,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 00:55:13,306 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:13,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 00:55:13,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2022-02-11 00:55:13,306 INFO L87 Difference]: Start difference. First operand 448 states and 976 transitions. Second operand has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:14,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:14,195 INFO L93 Difference]: Finished difference Result 1546 states and 3357 transitions. [2022-02-11 00:55:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-11 00:55:14,195 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-02-11 00:55:14,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:14,200 INFO L225 Difference]: With dead ends: 1546 [2022-02-11 00:55:14,200 INFO L226 Difference]: Without dead ends: 1536 [2022-02-11 00:55:14,201 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1059, Invalid=2973, Unknown=0, NotChecked=0, Total=4032 [2022-02-11 00:55:14,201 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 248 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:14,201 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 123 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:55:14,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2022-02-11 00:55:14,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 546. [2022-02-11 00:55:14,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 2.2605504587155965) internal successors, (1232), 545 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:14,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1232 transitions. [2022-02-11 00:55:14,218 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 1232 transitions. Word has length 27 [2022-02-11 00:55:14,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:14,218 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 1232 transitions. [2022-02-11 00:55:14,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:14,218 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 1232 transitions. [2022-02-11 00:55:14,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:55:14,219 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:14,219 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:14,236 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 00:55:14,434 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,SelfDestructingSolverStorable13 [2022-02-11 00:55:14,435 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:14,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:14,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1973910373, now seen corresponding path program 13 times [2022-02-11 00:55:14,435 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:14,435 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460643643] [2022-02-11 00:55:14,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:14,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:14,523 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:14,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460643643] [2022-02-11 00:55:14,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460643643] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:14,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417578845] [2022-02-11 00:55:14,523 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:55:14,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:14,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:14,524 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 00:55:14,531 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 00:55:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:14,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-11 00:55:14,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:14,791 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:14,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:14,997 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:14,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417578845] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:14,997 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:14,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 30 [2022-02-11 00:55:14,998 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078182088] [2022-02-11 00:55:14,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:14,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-11 00:55:14,999 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:15,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-11 00:55:15,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2022-02-11 00:55:15,005 INFO L87 Difference]: Start difference. First operand 546 states and 1232 transitions. Second operand has 31 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 30 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:15,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:15,808 INFO L93 Difference]: Finished difference Result 1098 states and 2300 transitions. [2022-02-11 00:55:15,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-11 00:55:15,808 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 30 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-02-11 00:55:15,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:15,812 INFO L225 Difference]: With dead ends: 1098 [2022-02-11 00:55:15,812 INFO L226 Difference]: Without dead ends: 1035 [2022-02-11 00:55:15,814 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1432, Invalid=4268, Unknown=0, NotChecked=0, Total=5700 [2022-02-11 00:55:15,814 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 273 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:15,815 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 174 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:55:15,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2022-02-11 00:55:15,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 503. [2022-02-11 00:55:15,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 2.256972111553785) internal successors, (1133), 502 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:15,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 1133 transitions. [2022-02-11 00:55:15,828 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 1133 transitions. Word has length 29 [2022-02-11 00:55:15,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:15,829 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 1133 transitions. [2022-02-11 00:55:15,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 30 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:15,829 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 1133 transitions. [2022-02-11 00:55:15,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:55:15,829 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:15,830 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:15,845 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 00:55:16,045 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,SelfDestructingSolverStorable14 [2022-02-11 00:55:16,045 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:16,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:16,046 INFO L85 PathProgramCache]: Analyzing trace with hash 592333205, now seen corresponding path program 14 times [2022-02-11 00:55:16,046 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:16,046 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896614830] [2022-02-11 00:55:16,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:16,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:16,114 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:16,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896614830] [2022-02-11 00:55:16,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896614830] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:16,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19012349] [2022-02-11 00:55:16,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:55:16,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:16,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:16,115 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 00:55:16,116 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 00:55:16,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:55:16,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:16,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-11 00:55:16,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:16,395 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:16,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:16,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19012349] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:16,693 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:16,693 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 11] total 25 [2022-02-11 00:55:16,693 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183817275] [2022-02-11 00:55:16,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:16,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-11 00:55:16,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:16,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-11 00:55:16,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2022-02-11 00:55:16,694 INFO L87 Difference]: Start difference. First operand 503 states and 1133 transitions. Second operand has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 25 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:17,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:17,377 INFO L93 Difference]: Finished difference Result 753 states and 1609 transitions. [2022-02-11 00:55:17,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 00:55:17,378 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 25 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-02-11 00:55:17,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:17,380 INFO L225 Difference]: With dead ends: 753 [2022-02-11 00:55:17,380 INFO L226 Difference]: Without dead ends: 749 [2022-02-11 00:55:17,381 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=992, Invalid=2548, Unknown=0, NotChecked=0, Total=3540 [2022-02-11 00:55:17,381 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 175 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:17,381 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 84 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:55:17,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-02-11 00:55:17,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 503. [2022-02-11 00:55:17,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 2.254980079681275) internal successors, (1132), 502 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:17,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 1132 transitions. [2022-02-11 00:55:17,389 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 1132 transitions. Word has length 29 [2022-02-11 00:55:17,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:17,390 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 1132 transitions. [2022-02-11 00:55:17,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 25 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:17,390 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 1132 transitions. [2022-02-11 00:55:17,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-11 00:55:17,390 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:17,390 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:17,423 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 00:55:17,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:17,591 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:17,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:17,592 INFO L85 PathProgramCache]: Analyzing trace with hash -224049671, now seen corresponding path program 15 times [2022-02-11 00:55:17,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:17,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402962412] [2022-02-11 00:55:17,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:17,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:17,703 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:17,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402962412] [2022-02-11 00:55:17,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402962412] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:17,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874855388] [2022-02-11 00:55:17,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:55:17,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:17,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:17,708 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 00:55:17,710 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 00:55:17,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-11 00:55:17,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:17,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-11 00:55:17,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:18,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:18,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874855388] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:18,374 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:18,374 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 15] total 36 [2022-02-11 00:55:18,374 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151202637] [2022-02-11 00:55:18,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:18,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-11 00:55:18,375 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:18,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-11 00:55:18,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1055, Unknown=0, NotChecked=0, Total=1332 [2022-02-11 00:55:18,375 INFO L87 Difference]: Start difference. First operand 503 states and 1132 transitions. Second operand has 37 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 36 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:20,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:20,702 INFO L93 Difference]: Finished difference Result 2242 states and 4712 transitions. [2022-02-11 00:55:20,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-11 00:55:20,702 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 36 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-02-11 00:55:20,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:20,708 INFO L225 Difference]: With dead ends: 2242 [2022-02-11 00:55:20,708 INFO L226 Difference]: Without dead ends: 2141 [2022-02-11 00:55:20,711 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6873 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3989, Invalid=13041, Unknown=0, NotChecked=0, Total=17030 [2022-02-11 00:55:20,711 INFO L934 BasicCegarLoop]: 25 mSDtfsCounter, 779 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:20,712 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 354 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:55:20,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2022-02-11 00:55:20,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 828. [2022-02-11 00:55:20,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 827 states have (on average 2.2781136638452235) internal successors, (1884), 827 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:20,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1884 transitions. [2022-02-11 00:55:20,732 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1884 transitions. Word has length 29 [2022-02-11 00:55:20,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:20,732 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 1884 transitions. [2022-02-11 00:55:20,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 36 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:20,732 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1884 transitions. [2022-02-11 00:55:20,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:55:20,733 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:20,734 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:20,754 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 00:55:20,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-02-11 00:55:20,947 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:20,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:20,948 INFO L85 PathProgramCache]: Analyzing trace with hash 524451993, now seen corresponding path program 16 times [2022-02-11 00:55:20,948 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:20,948 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027926757] [2022-02-11 00:55:20,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:20,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:21,008 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:21,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027926757] [2022-02-11 00:55:21,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027926757] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:21,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584239357] [2022-02-11 00:55:21,008 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:55:21,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:21,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:21,023 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 00:55:21,024 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 00:55:21,043 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:55:21,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:21,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-11 00:55:21,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:21,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:21,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584239357] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:21,337 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:21,337 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 11] total 15 [2022-02-11 00:55:21,338 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515468879] [2022-02-11 00:55:21,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:21,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-11 00:55:21,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:21,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-11 00:55:21,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:55:21,340 INFO L87 Difference]: Start difference. First operand 828 states and 1884 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:21,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:21,429 INFO L93 Difference]: Finished difference Result 1335 states and 3045 transitions. [2022-02-11 00:55:21,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-11 00:55:21,429 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-02-11 00:55:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:21,432 INFO L225 Difference]: With dead ends: 1335 [2022-02-11 00:55:21,432 INFO L226 Difference]: Without dead ends: 1296 [2022-02-11 00:55:21,433 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-02-11 00:55:21,433 INFO L934 BasicCegarLoop]: 39 mSDtfsCounter, 160 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:21,433 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 228 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:55:21,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2022-02-11 00:55:21,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1137. [2022-02-11 00:55:21,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1136 states have (on average 2.3107394366197185) internal successors, (2625), 1136 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:21,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 2625 transitions. [2022-02-11 00:55:21,454 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 2625 transitions. Word has length 31 [2022-02-11 00:55:21,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:21,454 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 2625 transitions. [2022-02-11 00:55:21,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:21,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 2625 transitions. [2022-02-11 00:55:21,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:55:21,463 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:21,463 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:21,481 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 00:55:21,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-11 00:55:21,681 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:21,681 INFO L85 PathProgramCache]: Analyzing trace with hash -2075385877, now seen corresponding path program 17 times [2022-02-11 00:55:21,681 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:21,681 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926973735] [2022-02-11 00:55:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:21,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:21,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:21,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926973735] [2022-02-11 00:55:21,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926973735] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:21,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307248160] [2022-02-11 00:55:21,836 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:55:21,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:21,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:21,837 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 00:55:21,838 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 00:55:21,859 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-11 00:55:21,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:21,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 00:55:21,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:22,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:22,679 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:22,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307248160] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:22,679 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:22,679 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 34 [2022-02-11 00:55:22,679 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837151978] [2022-02-11 00:55:22,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:22,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-11 00:55:22,680 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:22,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-11 00:55:22,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=986, Unknown=0, NotChecked=0, Total=1190 [2022-02-11 00:55:22,681 INFO L87 Difference]: Start difference. First operand 1137 states and 2625 transitions. Second operand has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:27,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:27,065 INFO L93 Difference]: Finished difference Result 2543 states and 5521 transitions. [2022-02-11 00:55:27,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-11 00:55:27,066 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-02-11 00:55:27,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:27,072 INFO L225 Difference]: With dead ends: 2543 [2022-02-11 00:55:27,072 INFO L226 Difference]: Without dead ends: 2402 [2022-02-11 00:55:27,074 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3588 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2373, Invalid=8133, Unknown=0, NotChecked=0, Total=10506 [2022-02-11 00:55:27,074 INFO L934 BasicCegarLoop]: 21 mSDtfsCounter, 560 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:27,074 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [560 Valid, 339 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:55:27,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2022-02-11 00:55:27,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 1423. [2022-02-11 00:55:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1422 states have (on average 2.2623066104078764) internal successors, (3217), 1422 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:27,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 3217 transitions. [2022-02-11 00:55:27,100 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 3217 transitions. Word has length 31 [2022-02-11 00:55:27,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:27,100 INFO L470 AbstractCegarLoop]: Abstraction has 1423 states and 3217 transitions. [2022-02-11 00:55:27,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:27,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 3217 transitions. [2022-02-11 00:55:27,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:55:27,101 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:27,102 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:27,123 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 00:55:27,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:27,319 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:27,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:27,319 INFO L85 PathProgramCache]: Analyzing trace with hash 410403225, now seen corresponding path program 18 times [2022-02-11 00:55:27,319 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:27,319 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477137975] [2022-02-11 00:55:27,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:27,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:27,439 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:27,440 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:27,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477137975] [2022-02-11 00:55:27,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477137975] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:27,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453669029] [2022-02-11 00:55:27,440 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:55:27,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:27,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:27,446 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 00:55:27,470 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 00:55:27,474 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-11 00:55:27,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:27,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-11 00:55:27,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:27,761 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:27,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:28,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453669029] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:28,160 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:28,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 31 [2022-02-11 00:55:28,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727622695] [2022-02-11 00:55:28,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:28,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-11 00:55:28,161 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:28,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-11 00:55:28,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=756, Unknown=0, NotChecked=0, Total=992 [2022-02-11 00:55:28,162 INFO L87 Difference]: Start difference. First operand 1423 states and 3217 transitions. Second operand has 32 states, 32 states have (on average 2.28125) internal successors, (73), 31 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:29,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:29,965 INFO L93 Difference]: Finished difference Result 3227 states and 7200 transitions. [2022-02-11 00:55:29,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-11 00:55:29,966 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 31 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-02-11 00:55:29,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:29,974 INFO L225 Difference]: With dead ends: 3227 [2022-02-11 00:55:29,974 INFO L226 Difference]: Without dead ends: 3219 [2022-02-11 00:55:29,978 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1631, Invalid=4689, Unknown=0, NotChecked=0, Total=6320 [2022-02-11 00:55:29,981 INFO L934 BasicCegarLoop]: 20 mSDtfsCounter, 447 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:29,987 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 165 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:55:29,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2022-02-11 00:55:30,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 1442. [2022-02-11 00:55:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1441 states have (on average 2.2873004857737684) internal successors, (3296), 1441 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:30,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 3296 transitions. [2022-02-11 00:55:30,044 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 3296 transitions. Word has length 31 [2022-02-11 00:55:30,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:30,044 INFO L470 AbstractCegarLoop]: Abstraction has 1442 states and 3296 transitions. [2022-02-11 00:55:30,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 31 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:30,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 3296 transitions. [2022-02-11 00:55:30,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-11 00:55:30,049 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:30,049 INFO L515 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:30,144 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 00:55:30,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:30,303 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:30,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:30,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1802444585, now seen corresponding path program 19 times [2022-02-11 00:55:30,304 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:30,304 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310488719] [2022-02-11 00:55:30,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:30,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:30,491 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:30,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:30,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310488719] [2022-02-11 00:55:30,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310488719] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:30,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397520849] [2022-02-11 00:55:30,492 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:55:30,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:30,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:30,493 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 00:55:30,537 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 00:55:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:30,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-11 00:55:30,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:30,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:31,191 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:31,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397520849] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:31,192 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:31,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 32 [2022-02-11 00:55:31,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777771636] [2022-02-11 00:55:31,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:31,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-11 00:55:31,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:31,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-11 00:55:31,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=805, Unknown=0, NotChecked=0, Total=1056 [2022-02-11 00:55:31,193 INFO L87 Difference]: Start difference. First operand 1442 states and 3296 transitions. Second operand has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:32,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:32,347 INFO L93 Difference]: Finished difference Result 2321 states and 5141 transitions. [2022-02-11 00:55:32,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-11 00:55:32,347 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-02-11 00:55:32,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:32,353 INFO L225 Difference]: With dead ends: 2321 [2022-02-11 00:55:32,353 INFO L226 Difference]: Without dead ends: 2313 [2022-02-11 00:55:32,354 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1957 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1719, Invalid=4761, Unknown=0, NotChecked=0, Total=6480 [2022-02-11 00:55:32,355 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 388 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:32,355 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 126 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:55:32,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2022-02-11 00:55:32,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 1166. [2022-02-11 00:55:32,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1165 states have (on average 2.2643776824034334) internal successors, (2638), 1165 states have internal predecessors, (2638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:32,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2638 transitions. [2022-02-11 00:55:32,400 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2638 transitions. Word has length 31 [2022-02-11 00:55:32,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:32,400 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 2638 transitions. [2022-02-11 00:55:32,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:32,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2638 transitions. [2022-02-11 00:55:32,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 00:55:32,403 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:32,403 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:32,441 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 00:55:32,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:32,615 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:32,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:32,616 INFO L85 PathProgramCache]: Analyzing trace with hash 986733015, now seen corresponding path program 20 times [2022-02-11 00:55:32,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:32,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971019709] [2022-02-11 00:55:32,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:32,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:32,749 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:32,749 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971019709] [2022-02-11 00:55:32,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971019709] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:32,749 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323200076] [2022-02-11 00:55:32,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:55:32,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:32,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:32,750 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 00:55:32,751 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 00:55:32,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:55:32,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:32,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-11 00:55:32,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:33,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:33,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323200076] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:33,356 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:33,356 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 36 [2022-02-11 00:55:33,357 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86038093] [2022-02-11 00:55:33,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:33,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-11 00:55:33,357 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:33,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-11 00:55:33,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1057, Unknown=0, NotChecked=0, Total=1332 [2022-02-11 00:55:33,358 INFO L87 Difference]: Start difference. First operand 1166 states and 2638 transitions. Second operand has 37 states, 37 states have (on average 2.324324324324324) internal successors, (86), 36 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:34,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:34,458 INFO L93 Difference]: Finished difference Result 2121 states and 4524 transitions. [2022-02-11 00:55:34,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-11 00:55:34,458 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.324324324324324) internal successors, (86), 36 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 00:55:34,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:34,473 INFO L225 Difference]: With dead ends: 2121 [2022-02-11 00:55:34,473 INFO L226 Difference]: Without dead ends: 1995 [2022-02-11 00:55:34,474 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2991 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2447, Invalid=7453, Unknown=0, NotChecked=0, Total=9900 [2022-02-11 00:55:34,476 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 359 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:34,476 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 174 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:55:34,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2022-02-11 00:55:34,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1115. [2022-02-11 00:55:34,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.2594254937163374) internal successors, (2517), 1114 states have internal predecessors, (2517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:34,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2517 transitions. [2022-02-11 00:55:34,514 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2517 transitions. Word has length 33 [2022-02-11 00:55:34,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:34,514 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2517 transitions. [2022-02-11 00:55:34,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.324324324324324) internal successors, (86), 36 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:34,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2517 transitions. [2022-02-11 00:55:34,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-11 00:55:34,516 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:34,516 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:34,541 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 00:55:34,732 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,SelfDestructingSolverStorable21 [2022-02-11 00:55:34,732 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:34,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1374694123, now seen corresponding path program 21 times [2022-02-11 00:55:34,733 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:34,733 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541458780] [2022-02-11 00:55:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:34,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:34,820 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:34,823 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541458780] [2022-02-11 00:55:34,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541458780] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:34,823 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141748024] [2022-02-11 00:55:34,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:55:34,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:34,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:34,825 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 00:55:34,826 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 00:55:34,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-11 00:55:34,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:34,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-11 00:55:34,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:35,099 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:35,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:35,351 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:35,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141748024] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:35,352 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:35,352 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 14] total 32 [2022-02-11 00:55:35,353 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141867481] [2022-02-11 00:55:35,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:35,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-11 00:55:35,354 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:35,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-11 00:55:35,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=789, Unknown=0, NotChecked=0, Total=1056 [2022-02-11 00:55:35,354 INFO L87 Difference]: Start difference. First operand 1115 states and 2517 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:36,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:36,471 INFO L93 Difference]: Finished difference Result 1545 states and 3349 transitions. [2022-02-11 00:55:36,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-11 00:55:36,475 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-02-11 00:55:36,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:36,483 INFO L225 Difference]: With dead ends: 1545 [2022-02-11 00:55:36,483 INFO L226 Difference]: Without dead ends: 1541 [2022-02-11 00:55:36,485 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3225 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2764, Invalid=7538, Unknown=0, NotChecked=0, Total=10302 [2022-02-11 00:55:36,486 INFO L934 BasicCegarLoop]: 7 mSDtfsCounter, 264 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:36,486 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 89 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:55:36,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2022-02-11 00:55:36,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1115. [2022-02-11 00:55:36,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.258527827648115) internal successors, (2516), 1114 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:36,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2516 transitions. [2022-02-11 00:55:36,503 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2516 transitions. Word has length 33 [2022-02-11 00:55:36,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:36,504 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2516 transitions. [2022-02-11 00:55:36,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:36,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2516 transitions. [2022-02-11 00:55:36,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-11 00:55:36,506 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:36,506 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:36,524 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 00:55:36,719 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,SelfDestructingSolverStorable22 [2022-02-11 00:55:36,719 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:36,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:36,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1860569387, now seen corresponding path program 22 times [2022-02-11 00:55:36,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:36,720 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482475733] [2022-02-11 00:55:36,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:36,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 1 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:36,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:36,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482475733] [2022-02-11 00:55:36,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482475733] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:36,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259400050] [2022-02-11 00:55:36,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:55:36,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:36,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:36,817 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 00:55:36,839 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 00:55:36,860 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:55:36,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:36,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-11 00:55:36,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:36,973 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:36,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:37,199 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:37,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259400050] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:37,199 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:37,199 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 13] total 18 [2022-02-11 00:55:37,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666971228] [2022-02-11 00:55:37,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:37,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-11 00:55:37,200 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:37,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-11 00:55:37,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-02-11 00:55:37,200 INFO L87 Difference]: Start difference. First operand 1115 states and 2516 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:37,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:37,306 INFO L93 Difference]: Finished difference Result 1715 states and 3869 transitions. [2022-02-11 00:55:37,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-11 00:55:37,306 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-02-11 00:55:37,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:37,309 INFO L225 Difference]: With dead ends: 1715 [2022-02-11 00:55:37,309 INFO L226 Difference]: Without dead ends: 1670 [2022-02-11 00:55:37,310 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-02-11 00:55:37,310 INFO L934 BasicCegarLoop]: 46 mSDtfsCounter, 129 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:37,310 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 349 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-11 00:55:37,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2022-02-11 00:55:37,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1471. [2022-02-11 00:55:37,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1470 states have (on average 2.314965986394558) internal successors, (3403), 1470 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:37,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 3403 transitions. [2022-02-11 00:55:37,330 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 3403 transitions. Word has length 35 [2022-02-11 00:55:37,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:37,330 INFO L470 AbstractCegarLoop]: Abstraction has 1471 states and 3403 transitions. [2022-02-11 00:55:37,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:37,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 3403 transitions. [2022-02-11 00:55:37,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-11 00:55:37,332 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:37,332 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:37,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-02-11 00:55:37,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:37,542 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:37,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:37,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1814617945, now seen corresponding path program 23 times [2022-02-11 00:55:37,542 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:37,542 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289010723] [2022-02-11 00:55:37,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:37,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:37,745 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:37,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289010723] [2022-02-11 00:55:37,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289010723] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:37,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195992165] [2022-02-11 00:55:37,745 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:55:37,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:37,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:37,746 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 00:55:37,747 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 00:55:37,774 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-11 00:55:37,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:37,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:55:37,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:38,109 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:38,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:39,133 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:39,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195992165] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:39,133 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:39,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 40 [2022-02-11 00:55:39,134 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140597194] [2022-02-11 00:55:39,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:39,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-11 00:55:39,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:39,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-11 00:55:39,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1371, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 00:55:39,134 INFO L87 Difference]: Start difference. First operand 1471 states and 3403 transitions. Second operand has 41 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:45,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:45,850 INFO L93 Difference]: Finished difference Result 3304 states and 7063 transitions. [2022-02-11 00:55:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-11 00:55:45,850 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-02-11 00:55:45,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:45,855 INFO L225 Difference]: With dead ends: 3304 [2022-02-11 00:55:45,855 INFO L226 Difference]: Without dead ends: 3031 [2022-02-11 00:55:45,856 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5150 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=3270, Invalid=11736, Unknown=0, NotChecked=0, Total=15006 [2022-02-11 00:55:45,856 INFO L934 BasicCegarLoop]: 26 mSDtfsCounter, 669 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 1671 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 1671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:45,856 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [669 Valid, 435 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 1671 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:55:45,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2022-02-11 00:55:45,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 1747. [2022-02-11 00:55:45,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1746 states have (on average 2.2262313860252005) internal successors, (3887), 1746 states have internal predecessors, (3887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:45,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 3887 transitions. [2022-02-11 00:55:45,884 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 3887 transitions. Word has length 35 [2022-02-11 00:55:45,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:45,884 INFO L470 AbstractCegarLoop]: Abstraction has 1747 states and 3887 transitions. [2022-02-11 00:55:45,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:45,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 3887 transitions. [2022-02-11 00:55:45,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-11 00:55:45,886 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:45,886 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:45,902 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 00:55:46,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:46,102 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:46,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:46,102 INFO L85 PathProgramCache]: Analyzing trace with hash 175034965, now seen corresponding path program 24 times [2022-02-11 00:55:46,102 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:46,102 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816010737] [2022-02-11 00:55:46,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:46,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:46,291 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:46,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816010737] [2022-02-11 00:55:46,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816010737] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:46,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733001964] [2022-02-11 00:55:46,291 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:55:46,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:46,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:46,292 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 00:55:46,293 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 00:55:46,316 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-02-11 00:55:46,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:46,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 28 conjunts are in the unsatisfiable core [2022-02-11 00:55:46,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:46,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:47,642 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 13 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:47,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733001964] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:47,643 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:47,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 38 [2022-02-11 00:55:47,643 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958323924] [2022-02-11 00:55:47,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:47,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-11 00:55:47,643 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:47,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-11 00:55:47,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=1143, Unknown=0, NotChecked=0, Total=1482 [2022-02-11 00:55:47,644 INFO L87 Difference]: Start difference. First operand 1747 states and 3887 transitions. Second operand has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 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 00:55:50,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:50,545 INFO L93 Difference]: Finished difference Result 4310 states and 9592 transitions. [2022-02-11 00:55:50,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-11 00:55:50,545 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 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) Word has length 35 [2022-02-11 00:55:50,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:50,552 INFO L225 Difference]: With dead ends: 4310 [2022-02-11 00:55:50,552 INFO L226 Difference]: Without dead ends: 4302 [2022-02-11 00:55:50,552 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3782 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2695, Invalid=8225, Unknown=0, NotChecked=0, Total=10920 [2022-02-11 00:55:50,552 INFO L934 BasicCegarLoop]: 20 mSDtfsCounter, 593 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:50,554 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [593 Valid, 173 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1471 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:55:50,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4302 states. [2022-02-11 00:55:50,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4302 to 2269. [2022-02-11 00:55:50,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 2268 states have (on average 2.2755731922398588) internal successors, (5161), 2268 states have internal predecessors, (5161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 5161 transitions. [2022-02-11 00:55:50,597 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 5161 transitions. Word has length 35 [2022-02-11 00:55:50,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:50,597 INFO L470 AbstractCegarLoop]: Abstraction has 2269 states and 5161 transitions. [2022-02-11 00:55:50,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 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 00:55:50,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 5161 transitions. [2022-02-11 00:55:50,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-11 00:55:50,599 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:50,599 INFO L515 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:50,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-02-11 00:55:50,812 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,SelfDestructingSolverStorable25 [2022-02-11 00:55:50,812 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:50,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:50,813 INFO L85 PathProgramCache]: Analyzing trace with hash 674574509, now seen corresponding path program 25 times [2022-02-11 00:55:50,813 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:50,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593277127] [2022-02-11 00:55:50,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:50,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:50,919 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:50,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593277127] [2022-02-11 00:55:50,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593277127] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:50,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544903861] [2022-02-11 00:55:50,919 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:55:50,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:50,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:50,936 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 00:55:50,937 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 00:55:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:50,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-11 00:55:50,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:51,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:51,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544903861] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:51,564 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:51,564 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 16] total 37 [2022-02-11 00:55:51,564 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959731948] [2022-02-11 00:55:51,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:51,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-11 00:55:51,577 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:51,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-11 00:55:51,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=1078, Unknown=0, NotChecked=0, Total=1406 [2022-02-11 00:55:51,577 INFO L87 Difference]: Start difference. First operand 2269 states and 5161 transitions. Second operand has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 37 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 00:55:52,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:52,824 INFO L93 Difference]: Finished difference Result 4342 states and 9549 transitions. [2022-02-11 00:55:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-11 00:55:52,825 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 37 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) Word has length 35 [2022-02-11 00:55:52,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:52,851 INFO L225 Difference]: With dead ends: 4342 [2022-02-11 00:55:52,851 INFO L226 Difference]: Without dead ends: 4334 [2022-02-11 00:55:52,852 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3769 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3075, Invalid=8697, Unknown=0, NotChecked=0, Total=11772 [2022-02-11 00:55:52,852 INFO L934 BasicCegarLoop]: 22 mSDtfsCounter, 471 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:52,852 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 209 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:55:52,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4334 states. [2022-02-11 00:55:52,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4334 to 2100. [2022-02-11 00:55:52,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 2099 states have (on average 2.2725107193901857) internal successors, (4770), 2099 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:52,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 4770 transitions. [2022-02-11 00:55:52,883 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 4770 transitions. Word has length 35 [2022-02-11 00:55:52,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:52,883 INFO L470 AbstractCegarLoop]: Abstraction has 2100 states and 4770 transitions. [2022-02-11 00:55:52,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 37 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 00:55:52,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 4770 transitions. [2022-02-11 00:55:52,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 00:55:52,886 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:52,886 INFO L515 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:52,916 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 00:55:53,116 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,SelfDestructingSolverStorable26 [2022-02-11 00:55:53,116 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:53,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:53,117 INFO L85 PathProgramCache]: Analyzing trace with hash 326959379, now seen corresponding path program 26 times [2022-02-11 00:55:53,117 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:53,117 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958163474] [2022-02-11 00:55:53,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:53,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:53,220 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:53,220 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:53,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958163474] [2022-02-11 00:55:53,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958163474] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:53,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548449194] [2022-02-11 00:55:53,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:55:53,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:53,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:53,221 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 00:55:53,222 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 00:55:53,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:55:53,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:53,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-11 00:55:53,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:53,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:53,814 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 30 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:53,815 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548449194] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:53,815 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:53,815 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 42 [2022-02-11 00:55:53,815 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34377071] [2022-02-11 00:55:53,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:53,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-11 00:55:53,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:53,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-11 00:55:53,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1443, Unknown=0, NotChecked=0, Total=1806 [2022-02-11 00:55:53,816 INFO L87 Difference]: Start difference. First operand 2100 states and 4770 transitions. Second operand has 43 states, 43 states have (on average 2.2790697674418605) internal successors, (98), 42 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:55,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:55,545 INFO L93 Difference]: Finished difference Result 3300 states and 7116 transitions. [2022-02-11 00:55:55,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-11 00:55:55,545 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.2790697674418605) internal successors, (98), 42 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-02-11 00:55:55,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:55,550 INFO L225 Difference]: With dead ends: 3300 [2022-02-11 00:55:55,550 INFO L226 Difference]: Without dead ends: 3111 [2022-02-11 00:55:55,551 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5089 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3920, Invalid=12082, Unknown=0, NotChecked=0, Total=16002 [2022-02-11 00:55:55,551 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 478 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:55,551 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 225 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:55:55,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2022-02-11 00:55:55,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 2017. [2022-02-11 00:55:55,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 2016 states have (on average 2.275297619047619) internal successors, (4587), 2016 states have internal predecessors, (4587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 4587 transitions. [2022-02-11 00:55:55,585 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 4587 transitions. Word has length 37 [2022-02-11 00:55:55,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:55,585 INFO L470 AbstractCegarLoop]: Abstraction has 2017 states and 4587 transitions. [2022-02-11 00:55:55,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.2790697674418605) internal successors, (98), 42 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:55,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 4587 transitions. [2022-02-11 00:55:55,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 00:55:55,588 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:55,588 INFO L515 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:55,625 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 00:55:55,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-11 00:55:55,803 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:55,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:55,804 INFO L85 PathProgramCache]: Analyzing trace with hash -177098347, now seen corresponding path program 27 times [2022-02-11 00:55:55,804 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:55,804 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359544723] [2022-02-11 00:55:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:55,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:55,903 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 31 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:55,903 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:55,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359544723] [2022-02-11 00:55:55,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359544723] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:55,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312540890] [2022-02-11 00:55:55,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:55:55,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:55,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:55,916 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 00:55:55,938 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 00:55:55,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-02-11 00:55:55,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:55,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-11 00:55:55,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:56,353 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 31 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:56,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:56,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312540890] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:56,787 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:56,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17, 16] total 37 [2022-02-11 00:55:56,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661321901] [2022-02-11 00:55:56,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:56,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-11 00:55:56,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:56,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-11 00:55:56,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1057, Unknown=0, NotChecked=0, Total=1406 [2022-02-11 00:55:56,788 INFO L87 Difference]: Start difference. First operand 2017 states and 4587 transitions. Second operand has 38 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 37 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 00:55:58,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:55:58,458 INFO L93 Difference]: Finished difference Result 2617 states and 5755 transitions. [2022-02-11 00:55:58,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-11 00:55:58,459 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 37 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-02-11 00:55:58,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:55:58,462 INFO L225 Difference]: With dead ends: 2617 [2022-02-11 00:55:58,462 INFO L226 Difference]: Without dead ends: 2613 [2022-02-11 00:55:58,464 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5796 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4528, Invalid=12764, Unknown=0, NotChecked=0, Total=17292 [2022-02-11 00:55:58,468 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 394 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:55:58,468 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 128 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:55:58,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2613 states. [2022-02-11 00:55:58,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2613 to 2017. [2022-02-11 00:55:58,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 2016 states have (on average 2.2748015873015874) internal successors, (4586), 2016 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:55:58,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 4586 transitions. [2022-02-11 00:55:58,495 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 4586 transitions. Word has length 37 [2022-02-11 00:55:58,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:55:58,496 INFO L470 AbstractCegarLoop]: Abstraction has 2017 states and 4586 transitions. [2022-02-11 00:55:58,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 37 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 00:55:58,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 4586 transitions. [2022-02-11 00:55:58,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 00:55:58,498 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:55:58,498 INFO L515 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:55:58,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-11 00:55:58,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-11 00:55:58,724 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:55:58,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:55:58,724 INFO L85 PathProgramCache]: Analyzing trace with hash -35070279, now seen corresponding path program 28 times [2022-02-11 00:55:58,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:55:58,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551769991] [2022-02-11 00:55:58,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:55:58,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:55:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:55:58,855 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 28 proven. 34 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-11 00:55:58,855 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:55:58,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551769991] [2022-02-11 00:55:58,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551769991] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:55:58,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580611113] [2022-02-11 00:55:58,855 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:55:58,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:55:58,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:55:58,860 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 00:55:58,862 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 00:55:58,883 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:55:58,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:55:58,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-11 00:55:58,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:55:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 20 proven. 43 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 00:55:59,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:55:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 30 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:55:59,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580611113] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:55:59,969 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:55:59,970 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 17] total 41 [2022-02-11 00:55:59,970 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621532291] [2022-02-11 00:55:59,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:55:59,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-11 00:55:59,970 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:55:59,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-11 00:55:59,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=1290, Unknown=0, NotChecked=0, Total=1722 [2022-02-11 00:55:59,970 INFO L87 Difference]: Start difference. First operand 2017 states and 4586 transitions. Second operand has 42 states, 42 states have (on average 2.3333333333333335) internal successors, (98), 41 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:02,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:02,551 INFO L93 Difference]: Finished difference Result 6297 states and 13794 transitions. [2022-02-11 00:56:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-11 00:56:02,551 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.3333333333333335) internal successors, (98), 41 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-02-11 00:56:02,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:02,559 INFO L225 Difference]: With dead ends: 6297 [2022-02-11 00:56:02,559 INFO L226 Difference]: Without dead ends: 6192 [2022-02-11 00:56:02,560 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8663 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5776, Invalid=13964, Unknown=0, NotChecked=0, Total=19740 [2022-02-11 00:56:02,560 INFO L934 BasicCegarLoop]: 26 mSDtfsCounter, 755 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:02,560 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 321 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:56:02,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6192 states. [2022-02-11 00:56:02,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6192 to 3061. [2022-02-11 00:56:02,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3061 states, 3060 states have (on average 2.2669934640522875) internal successors, (6937), 3060 states have internal predecessors, (6937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:02,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 6937 transitions. [2022-02-11 00:56:02,642 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 6937 transitions. Word has length 37 [2022-02-11 00:56:02,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:02,643 INFO L470 AbstractCegarLoop]: Abstraction has 3061 states and 6937 transitions. [2022-02-11 00:56:02,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.3333333333333335) internal successors, (98), 41 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:02,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 6937 transitions. [2022-02-11 00:56:02,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-11 00:56:02,646 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:02,647 INFO L515 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:02,672 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 00:56:02,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:02,855 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:56:02,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:02,856 INFO L85 PathProgramCache]: Analyzing trace with hash -148555911, now seen corresponding path program 29 times [2022-02-11 00:56:02,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:02,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433402876] [2022-02-11 00:56:02,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:02,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:03,008 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:03,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433402876] [2022-02-11 00:56:03,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433402876] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:03,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616564632] [2022-02-11 00:56:03,008 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:56:03,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:03,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:03,010 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 00:56:03,010 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 00:56:03,032 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-02-11 00:56:03,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:56:03,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-11 00:56:03,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:03,284 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:03,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:03,615 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:03,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616564632] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:03,615 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:03,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:56:03,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768803377] [2022-02-11 00:56:03,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:03,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:56:03,616 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:03,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:56:03,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=1814, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:56:03,616 INFO L87 Difference]: Start difference. First operand 3061 states and 6937 transitions. Second operand has 48 states, 48 states have (on average 2.125) internal successors, (102), 47 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 00:56:06,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:06,347 INFO L93 Difference]: Finished difference Result 7660 states and 16591 transitions. [2022-02-11 00:56:06,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-02-11 00:56:06,347 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.125) internal successors, (102), 47 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-02-11 00:56:06,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:06,356 INFO L225 Difference]: With dead ends: 7660 [2022-02-11 00:56:06,356 INFO L226 Difference]: Without dead ends: 7474 [2022-02-11 00:56:06,357 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10600 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=6820, Invalid=18940, Unknown=0, NotChecked=0, Total=25760 [2022-02-11 00:56:06,357 INFO L934 BasicCegarLoop]: 24 mSDtfsCounter, 798 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:06,357 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [798 Valid, 300 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:56:06,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7474 states. [2022-02-11 00:56:06,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7474 to 3144. [2022-02-11 00:56:06,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3144 states, 3143 states have (on average 2.2742602608972318) internal successors, (7148), 3143 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:06,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 7148 transitions. [2022-02-11 00:56:06,412 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 7148 transitions. Word has length 37 [2022-02-11 00:56:06,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:06,412 INFO L470 AbstractCegarLoop]: Abstraction has 3144 states and 7148 transitions. [2022-02-11 00:56:06,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.125) internal successors, (102), 47 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 00:56:06,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 7148 transitions. [2022-02-11 00:56:06,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-11 00:56:06,415 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:06,415 INFO L515 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:06,433 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 00:56:06,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:06,634 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:56:06,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:06,634 INFO L85 PathProgramCache]: Analyzing trace with hash -247873775, now seen corresponding path program 30 times [2022-02-11 00:56:06,635 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:06,635 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213252482] [2022-02-11 00:56:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:06,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 1 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:06,726 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:06,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213252482] [2022-02-11 00:56:06,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213252482] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:06,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511984326] [2022-02-11 00:56:06,726 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:56:06,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:06,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:06,727 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 00:56:06,729 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 00:56:06,752 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-11 00:56:06,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:56:06,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-11 00:56:06,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 1 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:06,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:07,115 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 25 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:07,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511984326] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:07,115 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:07,115 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 21 [2022-02-11 00:56:07,116 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313014218] [2022-02-11 00:56:07,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:07,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-11 00:56:07,116 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:07,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-11 00:56:07,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-02-11 00:56:07,116 INFO L87 Difference]: Start difference. First operand 3144 states and 7148 transitions. Second operand has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:07,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:07,439 INFO L93 Difference]: Finished difference Result 5118 states and 11762 transitions. [2022-02-11 00:56:07,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-11 00:56:07,439 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-11 00:56:07,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:07,461 INFO L225 Difference]: With dead ends: 5118 [2022-02-11 00:56:07,461 INFO L226 Difference]: Without dead ends: 5048 [2022-02-11 00:56:07,461 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 68 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2022-02-11 00:56:07,462 INFO L934 BasicCegarLoop]: 73 mSDtfsCounter, 198 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:07,462 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 644 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:56:07,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5048 states. [2022-02-11 00:56:07,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 3958. [2022-02-11 00:56:07,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3958 states, 3957 states have (on average 2.3040181956027292) internal successors, (9117), 3957 states have internal predecessors, (9117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3958 states to 3958 states and 9117 transitions. [2022-02-11 00:56:07,511 INFO L78 Accepts]: Start accepts. Automaton has 3958 states and 9117 transitions. Word has length 39 [2022-02-11 00:56:07,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:07,511 INFO L470 AbstractCegarLoop]: Abstraction has 3958 states and 9117 transitions. [2022-02-11 00:56:07,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:07,511 INFO L276 IsEmpty]: Start isEmpty. Operand 3958 states and 9117 transitions. [2022-02-11 00:56:07,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-11 00:56:07,514 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:07,514 INFO L515 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:07,533 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 00:56:07,730 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,SelfDestructingSolverStorable31 [2022-02-11 00:56:07,731 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:56:07,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:07,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1725109521, now seen corresponding path program 31 times [2022-02-11 00:56:07,731 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:07,731 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265394235] [2022-02-11 00:56:07,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:07,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 11 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:07,882 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:07,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265394235] [2022-02-11 00:56:07,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265394235] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:07,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925440761] [2022-02-11 00:56:07,882 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:56:07,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:07,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:07,884 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 00:56:07,885 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 00:56:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:07,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-11 00:56:07,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 11 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:08,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:09,217 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 16 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:09,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925440761] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:09,217 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:09,218 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 18] total 43 [2022-02-11 00:56:09,218 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457588644] [2022-02-11 00:56:09,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:09,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-11 00:56:09,218 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:09,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-11 00:56:09,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=1459, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 00:56:09,219 INFO L87 Difference]: Start difference. First operand 3958 states and 9117 transitions. Second operand has 44 states, 44 states have (on average 2.2045454545454546) internal successors, (97), 43 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:12,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:12,670 INFO L93 Difference]: Finished difference Result 7185 states and 16496 transitions. [2022-02-11 00:56:12,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-11 00:56:12,671 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.2045454545454546) internal successors, (97), 43 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-11 00:56:12,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:12,679 INFO L225 Difference]: With dead ends: 7185 [2022-02-11 00:56:12,679 INFO L226 Difference]: Without dead ends: 7179 [2022-02-11 00:56:12,680 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5139 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3544, Invalid=10976, Unknown=0, NotChecked=0, Total=14520 [2022-02-11 00:56:12,680 INFO L934 BasicCegarLoop]: 20 mSDtfsCounter, 773 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 2423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:12,680 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 230 Invalid, 2423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 00:56:12,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7179 states. [2022-02-11 00:56:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7179 to 4213. [2022-02-11 00:56:12,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4213 states, 4212 states have (on average 2.3409306742640075) internal successors, (9860), 4212 states have internal predecessors, (9860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:12,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4213 states to 4213 states and 9860 transitions. [2022-02-11 00:56:12,739 INFO L78 Accepts]: Start accepts. Automaton has 4213 states and 9860 transitions. Word has length 39 [2022-02-11 00:56:12,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:12,740 INFO L470 AbstractCegarLoop]: Abstraction has 4213 states and 9860 transitions. [2022-02-11 00:56:12,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.2045454545454546) internal successors, (97), 43 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:12,741 INFO L276 IsEmpty]: Start isEmpty. Operand 4213 states and 9860 transitions. [2022-02-11 00:56:12,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-11 00:56:12,745 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:12,745 INFO L515 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:12,765 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 00:56:12,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:12,959 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:56:12,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:12,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1853554639, now seen corresponding path program 32 times [2022-02-11 00:56:12,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:12,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948207721] [2022-02-11 00:56:12,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:12,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:13,052 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 27 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:13,052 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:13,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948207721] [2022-02-11 00:56:13,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948207721] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:13,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274464993] [2022-02-11 00:56:13,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:56:13,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:13,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:13,054 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 00:56:13,055 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 00:56:13,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:56:13,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:56:13,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 28 conjunts are in the unsatisfiable core [2022-02-11 00:56:13,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 27 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:13,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 32 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:13,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274464993] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:13,831 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:13,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 18] total 42 [2022-02-11 00:56:13,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649669843] [2022-02-11 00:56:13,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:13,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-02-11 00:56:13,831 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:13,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-02-11 00:56:13,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=1391, Unknown=0, NotChecked=0, Total=1806 [2022-02-11 00:56:13,832 INFO L87 Difference]: Start difference. First operand 4213 states and 9860 transitions. Second operand has 43 states, 43 states have (on average 2.255813953488372) internal successors, (97), 42 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:16,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:16,330 INFO L93 Difference]: Finished difference Result 5916 states and 13505 transitions. [2022-02-11 00:56:16,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-11 00:56:16,330 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.255813953488372) internal successors, (97), 42 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-02-11 00:56:16,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:16,337 INFO L225 Difference]: With dead ends: 5916 [2022-02-11 00:56:16,337 INFO L226 Difference]: Without dead ends: 5912 [2022-02-11 00:56:16,338 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6354 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4949, Invalid=13957, Unknown=0, NotChecked=0, Total=18906 [2022-02-11 00:56:16,338 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 416 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:16,339 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 123 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:56:16,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5912 states. [2022-02-11 00:56:16,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5912 to 3527. [2022-02-11 00:56:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3527 states, 3526 states have (on average 2.356211003970505) internal successors, (8308), 3526 states have internal predecessors, (8308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:16,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 8308 transitions. [2022-02-11 00:56:16,393 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 8308 transitions. Word has length 39 [2022-02-11 00:56:16,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:16,393 INFO L470 AbstractCegarLoop]: Abstraction has 3527 states and 8308 transitions. [2022-02-11 00:56:16,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.255813953488372) internal successors, (97), 42 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:16,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 8308 transitions. [2022-02-11 00:56:16,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-02-11 00:56:16,397 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:16,397 INFO L515 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:16,416 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 00:56:16,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:16,612 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:56:16,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:16,612 INFO L85 PathProgramCache]: Analyzing trace with hash 725410591, now seen corresponding path program 33 times [2022-02-11 00:56:16,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:16,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339238762] [2022-02-11 00:56:16,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:16,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:16,952 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 34 proven. 50 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:56:16,952 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:16,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339238762] [2022-02-11 00:56:16,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339238762] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:16,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927941391] [2022-02-11 00:56:16,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:56:16,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:16,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:16,954 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 00:56:16,955 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 00:56:16,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-02-11 00:56:16,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:56:16,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-11 00:56:16,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:17,487 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:17,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:18,044 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:18,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927941391] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:18,045 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:18,045 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 20] total 49 [2022-02-11 00:56:18,045 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310609159] [2022-02-11 00:56:18,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:18,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-11 00:56:18,045 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:18,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-11 00:56:18,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=2064, Unknown=0, NotChecked=0, Total=2450 [2022-02-11 00:56:18,046 INFO L87 Difference]: Start difference. First operand 3527 states and 8308 transitions. Second operand has 50 states, 50 states have (on average 2.28) internal successors, (114), 49 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:24,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:24,953 INFO L93 Difference]: Finished difference Result 8303 states and 17604 transitions. [2022-02-11 00:56:24,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2022-02-11 00:56:24,954 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.28) internal successors, (114), 49 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-02-11 00:56:24,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:24,965 INFO L225 Difference]: With dead ends: 8303 [2022-02-11 00:56:24,965 INFO L226 Difference]: Without dead ends: 7946 [2022-02-11 00:56:24,970 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30616 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=18238, Invalid=56564, Unknown=0, NotChecked=0, Total=74802 [2022-02-11 00:56:24,970 INFO L934 BasicCegarLoop]: 13 mSDtfsCounter, 1008 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 2087 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:24,971 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 424 Invalid, 2363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 2087 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 00:56:24,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7946 states. [2022-02-11 00:56:25,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7946 to 3824. [2022-02-11 00:56:25,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3824 states, 3823 states have (on average 2.3481558985090243) internal successors, (8977), 3823 states have internal predecessors, (8977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 8977 transitions. [2022-02-11 00:56:25,059 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 8977 transitions. Word has length 41 [2022-02-11 00:56:25,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:25,059 INFO L470 AbstractCegarLoop]: Abstraction has 3824 states and 8977 transitions. [2022-02-11 00:56:25,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.28) internal successors, (114), 49 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:25,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 8977 transitions. [2022-02-11 00:56:25,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-02-11 00:56:25,063 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:25,063 INFO L515 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:25,082 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 00:56:25,264 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,SelfDestructingSolverStorable34 [2022-02-11 00:56:25,264 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:56:25,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:25,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1834803435, now seen corresponding path program 34 times [2022-02-11 00:56:25,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:25,264 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544152611] [2022-02-11 00:56:25,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:25,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 43 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:25,371 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:25,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544152611] [2022-02-11 00:56:25,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544152611] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:25,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528827036] [2022-02-11 00:56:25,371 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:56:25,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:25,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:25,372 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 00:56:25,373 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 00:56:25,414 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:56:25,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:56:25,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-11 00:56:25,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 43 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:25,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:26,036 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:26,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528827036] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:26,037 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:26,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18, 17] total 40 [2022-02-11 00:56:26,037 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797369366] [2022-02-11 00:56:26,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:26,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-11 00:56:26,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:26,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-11 00:56:26,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 00:56:26,038 INFO L87 Difference]: Start difference. First operand 3824 states and 8977 transitions. Second operand has 41 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 40 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 00:56:27,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:27,509 INFO L93 Difference]: Finished difference Result 5731 states and 13056 transitions. [2022-02-11 00:56:27,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-11 00:56:27,509 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 40 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-02-11 00:56:27,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:27,534 INFO L225 Difference]: With dead ends: 5731 [2022-02-11 00:56:27,534 INFO L226 Difference]: Without dead ends: 5727 [2022-02-11 00:56:27,535 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4451 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3813, Invalid=10467, Unknown=0, NotChecked=0, Total=14280 [2022-02-11 00:56:27,536 INFO L934 BasicCegarLoop]: 14 mSDtfsCounter, 377 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:27,536 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 166 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:56:27,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5727 states. [2022-02-11 00:56:27,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5727 to 4625. [2022-02-11 00:56:27,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4625 states, 4624 states have (on average 2.343425605536332) internal successors, (10836), 4624 states have internal predecessors, (10836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4625 states to 4625 states and 10836 transitions. [2022-02-11 00:56:27,595 INFO L78 Accepts]: Start accepts. Automaton has 4625 states and 10836 transitions. Word has length 41 [2022-02-11 00:56:27,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:27,595 INFO L470 AbstractCegarLoop]: Abstraction has 4625 states and 10836 transitions. [2022-02-11 00:56:27,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 40 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 00:56:27,595 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states and 10836 transitions. [2022-02-11 00:56:27,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-11 00:56:27,600 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:27,600 INFO L515 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:27,616 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 00:56:27,819 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,SelfDestructingSolverStorable35 [2022-02-11 00:56:27,819 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:56:27,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:27,820 INFO L85 PathProgramCache]: Analyzing trace with hash 217373005, now seen corresponding path program 35 times [2022-02-11 00:56:27,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:27,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511293039] [2022-02-11 00:56:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:27,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:27,927 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 1 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:27,927 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:27,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511293039] [2022-02-11 00:56:27,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511293039] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:27,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76179505] [2022-02-11 00:56:27,927 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:56:27,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:27,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:27,928 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 00:56:27,934 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 00:56:27,961 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-02-11 00:56:27,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:56:27,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:56:27,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:28,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 49 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:28,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76179505] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:28,653 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:28,653 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 17] total 24 [2022-02-11 00:56:28,653 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569826069] [2022-02-11 00:56:28,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:28,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-11 00:56:28,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:28,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-11 00:56:28,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2022-02-11 00:56:28,657 INFO L87 Difference]: Start difference. First operand 4625 states and 10836 transitions. Second operand has 24 states, 24 states have (on average 3.3333333333333335) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:28,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:28,875 INFO L93 Difference]: Finished difference Result 6487 states and 15374 transitions. [2022-02-11 00:56:28,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-11 00:56:28,875 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.3333333333333335) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-02-11 00:56:28,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:28,883 INFO L225 Difference]: With dead ends: 6487 [2022-02-11 00:56:28,883 INFO L226 Difference]: Without dead ends: 6430 [2022-02-11 00:56:28,884 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 75 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2022-02-11 00:56:28,884 INFO L934 BasicCegarLoop]: 60 mSDtfsCounter, 182 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:28,884 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 616 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:56:28,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6430 states. [2022-02-11 00:56:28,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6430 to 6189. [2022-02-11 00:56:28,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6189 states, 6188 states have (on average 2.397382029734971) internal successors, (14835), 6188 states have internal predecessors, (14835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6189 states to 6189 states and 14835 transitions. [2022-02-11 00:56:28,970 INFO L78 Accepts]: Start accepts. Automaton has 6189 states and 14835 transitions. Word has length 43 [2022-02-11 00:56:28,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:28,970 INFO L470 AbstractCegarLoop]: Abstraction has 6189 states and 14835 transitions. [2022-02-11 00:56:28,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.3333333333333335) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:28,970 INFO L276 IsEmpty]: Start isEmpty. Operand 6189 states and 14835 transitions. [2022-02-11 00:56:28,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-11 00:56:28,976 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:28,976 INFO L515 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:28,992 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 00:56:29,185 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,SelfDestructingSolverStorable36 [2022-02-11 00:56:29,186 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:56:29,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:29,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1423537757, now seen corresponding path program 36 times [2022-02-11 00:56:29,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:29,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65004716] [2022-02-11 00:56:29,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:29,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:29,425 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:29,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65004716] [2022-02-11 00:56:29,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65004716] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:29,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779481788] [2022-02-11 00:56:29,425 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:56:29,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:29,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:29,426 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 00:56:29,433 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 00:56:29,460 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-02-11 00:56:29,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:56:29,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 40 conjunts are in the unsatisfiable core [2022-02-11 00:56:29,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:29,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 2 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:31,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779481788] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:31,282 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:31,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 20] total 48 [2022-02-11 00:56:31,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642900843] [2022-02-11 00:56:31,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:31,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-11 00:56:31,283 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:31,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-11 00:56:31,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=1883, Unknown=0, NotChecked=0, Total=2352 [2022-02-11 00:56:31,284 INFO L87 Difference]: Start difference. First operand 6189 states and 14835 transitions. Second operand has 49 states, 49 states have (on average 2.36734693877551) internal successors, (116), 48 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:40,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:40,441 INFO L93 Difference]: Finished difference Result 14113 states and 32350 transitions. [2022-02-11 00:56:40,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-02-11 00:56:40,441 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.36734693877551) internal successors, (116), 48 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-02-11 00:56:40,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:40,461 INFO L225 Difference]: With dead ends: 14113 [2022-02-11 00:56:40,461 INFO L226 Difference]: Without dead ends: 14074 [2022-02-11 00:56:40,462 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12397 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=6675, Invalid=25905, Unknown=0, NotChecked=0, Total=32580 [2022-02-11 00:56:40,465 INFO L934 BasicCegarLoop]: 31 mSDtfsCounter, 1375 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 3756 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 4374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 3756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:40,466 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1375 Valid, 505 Invalid, 4374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 3756 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-11 00:56:40,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14074 states. [2022-02-11 00:56:40,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14074 to 7107. [2022-02-11 00:56:40,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7107 states, 7106 states have (on average 2.41345341964537) internal successors, (17150), 7106 states have internal predecessors, (17150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:40,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7107 states to 7107 states and 17150 transitions. [2022-02-11 00:56:40,611 INFO L78 Accepts]: Start accepts. Automaton has 7107 states and 17150 transitions. Word has length 43 [2022-02-11 00:56:40,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:40,611 INFO L470 AbstractCegarLoop]: Abstraction has 7107 states and 17150 transitions. [2022-02-11 00:56:40,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.36734693877551) internal successors, (116), 48 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:40,612 INFO L276 IsEmpty]: Start isEmpty. Operand 7107 states and 17150 transitions. [2022-02-11 00:56:40,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-11 00:56:40,618 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:40,618 INFO L515 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:40,635 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 00:56:40,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:40,834 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:56:40,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:40,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2141063629, now seen corresponding path program 37 times [2022-02-11 00:56:40,835 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:40,835 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505114412] [2022-02-11 00:56:40,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:40,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:41,026 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 13 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:41,027 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:41,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505114412] [2022-02-11 00:56:41,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505114412] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:41,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082084019] [2022-02-11 00:56:41,027 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:56:41,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:41,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:41,028 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 00:56:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:41,075 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 00:56:41,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 40 conjunts are in the unsatisfiable core [2022-02-11 00:56:41,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 13 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:41,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 19 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:43,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082084019] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:43,308 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:43,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20, 20] total 48 [2022-02-11 00:56:43,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075304640] [2022-02-11 00:56:43,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:43,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-11 00:56:43,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:43,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-11 00:56:43,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=1812, Unknown=0, NotChecked=0, Total=2352 [2022-02-11 00:56:43,309 INFO L87 Difference]: Start difference. First operand 7107 states and 17150 transitions. Second operand has 49 states, 49 states have (on average 2.2244897959183674) internal successors, (109), 48 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:49,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:49,154 INFO L93 Difference]: Finished difference Result 11263 states and 26738 transitions. [2022-02-11 00:56:49,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-11 00:56:49,154 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2244897959183674) internal successors, (109), 48 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-02-11 00:56:49,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:49,178 INFO L225 Difference]: With dead ends: 11263 [2022-02-11 00:56:49,178 INFO L226 Difference]: Without dead ends: 11257 [2022-02-11 00:56:49,179 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7749 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=5198, Invalid=16264, Unknown=0, NotChecked=0, Total=21462 [2022-02-11 00:56:49,179 INFO L934 BasicCegarLoop]: 23 mSDtfsCounter, 695 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 3735 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 4158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 3735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:49,180 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 418 Invalid, 4158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 3735 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-11 00:56:49,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11257 states. [2022-02-11 00:56:49,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11257 to 7121. [2022-02-11 00:56:49,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7121 states, 7120 states have (on average 2.3985955056179775) internal successors, (17078), 7120 states have internal predecessors, (17078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:49,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7121 states to 7121 states and 17078 transitions. [2022-02-11 00:56:49,385 INFO L78 Accepts]: Start accepts. Automaton has 7121 states and 17078 transitions. Word has length 43 [2022-02-11 00:56:49,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:49,386 INFO L470 AbstractCegarLoop]: Abstraction has 7121 states and 17078 transitions. [2022-02-11 00:56:49,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2244897959183674) internal successors, (109), 48 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:49,386 INFO L276 IsEmpty]: Start isEmpty. Operand 7121 states and 17078 transitions. [2022-02-11 00:56:49,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-11 00:56:49,392 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:49,393 INFO L515 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:49,411 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 00:56:49,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-11 00:56:49,608 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:56:49,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:49,608 INFO L85 PathProgramCache]: Analyzing trace with hash -2112358153, now seen corresponding path program 38 times [2022-02-11 00:56:49,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:49,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399758343] [2022-02-11 00:56:49,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:49,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:49,822 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 19 proven. 78 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-11 00:56:49,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:49,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399758343] [2022-02-11 00:56:49,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399758343] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:49,823 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539243344] [2022-02-11 00:56:49,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:56:49,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:49,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:49,824 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 00:56:49,835 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 00:56:49,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:56:49,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:56:49,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-11 00:56:49,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:50,225 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 16 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:50,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 17 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:50,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539243344] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:50,664 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:50,664 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 20] total 51 [2022-02-11 00:56:50,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951307116] [2022-02-11 00:56:50,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:50,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-11 00:56:50,665 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:50,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-11 00:56:50,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=2232, Unknown=0, NotChecked=0, Total=2652 [2022-02-11 00:56:50,665 INFO L87 Difference]: Start difference. First operand 7121 states and 17078 transitions. Second operand has 52 states, 52 states have (on average 2.1923076923076925) internal successors, (114), 51 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:55,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:55,144 INFO L93 Difference]: Finished difference Result 23199 states and 51780 transitions. [2022-02-11 00:56:55,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2022-02-11 00:56:55,144 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.1923076923076925) internal successors, (114), 51 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-02-11 00:56:55,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:55,179 INFO L225 Difference]: With dead ends: 23199 [2022-02-11 00:56:55,179 INFO L226 Difference]: Without dead ends: 22782 [2022-02-11 00:56:55,181 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17718 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=10278, Invalid=36594, Unknown=0, NotChecked=0, Total=46872 [2022-02-11 00:56:55,181 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 870 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 2092 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 2092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:55,181 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 337 Invalid, 2373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 2092 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 00:56:55,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22782 states. [2022-02-11 00:56:55,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22782 to 8676. [2022-02-11 00:56:55,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8676 states, 8675 states have (on average 2.400806916426513) internal successors, (20827), 8675 states have internal predecessors, (20827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:55,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8676 states to 8676 states and 20827 transitions. [2022-02-11 00:56:55,387 INFO L78 Accepts]: Start accepts. Automaton has 8676 states and 20827 transitions. Word has length 43 [2022-02-11 00:56:55,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:55,387 INFO L470 AbstractCegarLoop]: Abstraction has 8676 states and 20827 transitions. [2022-02-11 00:56:55,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.1923076923076925) internal successors, (114), 51 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:55,388 INFO L276 IsEmpty]: Start isEmpty. Operand 8676 states and 20827 transitions. [2022-02-11 00:56:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-11 00:56:55,395 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:55,395 INFO L515 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:55,412 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 00:56:55,597 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,SelfDestructingSolverStorable39 [2022-02-11 00:56:55,597 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:56:55,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:55,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1531415989, now seen corresponding path program 39 times [2022-02-11 00:56:55,597 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:55,597 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19401742] [2022-02-11 00:56:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:55,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:55,710 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 38 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:55,710 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:55,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19401742] [2022-02-11 00:56:55,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19401742] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:55,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161120172] [2022-02-11 00:56:55,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:56:55,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:55,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:55,711 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 00:56:55,712 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 00:56:55,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-02-11 00:56:55,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:56:55,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-11 00:56:55,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:56:56,104 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 38 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:56,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:56:56,592 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 44 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:56,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161120172] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:56:56,593 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:56:56,593 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 20] total 47 [2022-02-11 00:56:56,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035122911] [2022-02-11 00:56:56,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:56:56,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:56:56,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:56:56,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:56:56,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=1743, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:56:56,595 INFO L87 Difference]: Start difference. First operand 8676 states and 20827 transitions. Second operand has 48 states, 48 states have (on average 2.2708333333333335) internal successors, (109), 47 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:59,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:56:59,416 INFO L93 Difference]: Finished difference Result 12074 states and 28318 transitions. [2022-02-11 00:56:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-02-11 00:56:59,416 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.2708333333333335) internal successors, (109), 47 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-02-11 00:56:59,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:56:59,433 INFO L225 Difference]: With dead ends: 12074 [2022-02-11 00:56:59,433 INFO L226 Difference]: Without dead ends: 12070 [2022-02-11 00:56:59,434 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10473 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=7559, Invalid=21853, Unknown=0, NotChecked=0, Total=29412 [2022-02-11 00:56:59,435 INFO L934 BasicCegarLoop]: 14 mSDtfsCounter, 692 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:56:59,435 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 190 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:56:59,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12070 states. [2022-02-11 00:56:59,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12070 to 7183. [2022-02-11 00:56:59,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7183 states, 7182 states have (on average 2.404204956836536) internal successors, (17267), 7182 states have internal predecessors, (17267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:59,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7183 states to 7183 states and 17267 transitions. [2022-02-11 00:56:59,550 INFO L78 Accepts]: Start accepts. Automaton has 7183 states and 17267 transitions. Word has length 43 [2022-02-11 00:56:59,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:56:59,550 INFO L470 AbstractCegarLoop]: Abstraction has 7183 states and 17267 transitions. [2022-02-11 00:56:59,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.2708333333333335) internal successors, (109), 47 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:56:59,551 INFO L276 IsEmpty]: Start isEmpty. Operand 7183 states and 17267 transitions. [2022-02-11 00:56:59,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-11 00:56:59,557 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:56:59,558 INFO L515 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:56:59,574 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 00:56:59,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:59,774 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:56:59,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:56:59,774 INFO L85 PathProgramCache]: Analyzing trace with hash 289457547, now seen corresponding path program 40 times [2022-02-11 00:56:59,774 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:56:59,774 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083170929] [2022-02-11 00:56:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:56:59,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:56:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:56:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:56:59,953 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:56:59,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083170929] [2022-02-11 00:56:59,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083170929] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:56:59,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998438956] [2022-02-11 00:56:59,953 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:56:59,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:56:59,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:56:59,954 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 00:56:59,986 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:56:59,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:56:59,987 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 00:56:59,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-11 00:56:59,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:57:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:00,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:57:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 56 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:01,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998438956] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:57:01,016 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:57:01,016 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 20] total 54 [2022-02-11 00:57:01,016 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768807208] [2022-02-11 00:57:01,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:57:01,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-11 00:57:01,017 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:57:01,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-11 00:57:01,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=2395, Unknown=0, NotChecked=0, Total=2970 [2022-02-11 00:57:01,018 INFO L87 Difference]: Start difference. First operand 7183 states and 17267 transitions. Second operand has 55 states, 55 states have (on average 2.2181818181818183) internal successors, (122), 54 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:04,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:57:04,482 INFO L93 Difference]: Finished difference Result 11408 states and 26181 transitions. [2022-02-11 00:57:04,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-02-11 00:57:04,482 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.2181818181818183) internal successors, (122), 54 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-11 00:57:04,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:57:04,494 INFO L225 Difference]: With dead ends: 11408 [2022-02-11 00:57:04,494 INFO L226 Difference]: Without dead ends: 10835 [2022-02-11 00:57:04,496 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12470 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=8734, Invalid=27176, Unknown=0, NotChecked=0, Total=35910 [2022-02-11 00:57:04,496 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 729 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:57:04,496 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 270 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:57:04,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10835 states. [2022-02-11 00:57:04,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10835 to 7730. [2022-02-11 00:57:04,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7730 states, 7729 states have (on average 2.387631000129383) internal successors, (18454), 7729 states have internal predecessors, (18454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:04,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7730 states to 7730 states and 18454 transitions. [2022-02-11 00:57:04,604 INFO L78 Accepts]: Start accepts. Automaton has 7730 states and 18454 transitions. Word has length 45 [2022-02-11 00:57:04,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:57:04,604 INFO L470 AbstractCegarLoop]: Abstraction has 7730 states and 18454 transitions. [2022-02-11 00:57:04,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.2181818181818183) internal successors, (122), 54 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:04,605 INFO L276 IsEmpty]: Start isEmpty. Operand 7730 states and 18454 transitions. [2022-02-11 00:57:04,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-11 00:57:04,611 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:57:04,611 INFO L515 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:57:04,629 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 00:57:04,827 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,SelfDestructingSolverStorable41 [2022-02-11 00:57:04,827 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:57:04,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:57:04,829 INFO L85 PathProgramCache]: Analyzing trace with hash -2075959915, now seen corresponding path program 41 times [2022-02-11 00:57:04,829 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:57:04,829 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560909420] [2022-02-11 00:57:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:57:04,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:57:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:57:04,958 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 57 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:04,958 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:57:04,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560909420] [2022-02-11 00:57:04,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560909420] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:57:04,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58424344] [2022-02-11 00:57:04,958 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:57:04,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:57:04,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:57:04,959 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 00:57:04,960 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 00:57:04,990 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-02-11 00:57:04,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:57:04,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-11 00:57:04,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:57:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 57 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:05,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:57:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:06,140 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58424344] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:57:06,140 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:57:06,141 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 20] total 47 [2022-02-11 00:57:06,141 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047000808] [2022-02-11 00:57:06,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:57:06,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:57:06,141 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:57:06,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:57:06,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=1713, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:57:06,142 INFO L87 Difference]: Start difference. First operand 7730 states and 18454 transitions. Second operand has 48 states, 48 states have (on average 2.375) internal successors, (114), 47 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:09,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:57:09,748 INFO L93 Difference]: Finished difference Result 8996 states and 21001 transitions. [2022-02-11 00:57:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-02-11 00:57:09,748 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.375) internal successors, (114), 47 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-11 00:57:09,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:57:09,759 INFO L225 Difference]: With dead ends: 8996 [2022-02-11 00:57:09,760 INFO L226 Difference]: Without dead ends: 8992 [2022-02-11 00:57:09,762 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15551 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=10580, Invalid=31240, Unknown=0, NotChecked=0, Total=41820 [2022-02-11 00:57:09,766 INFO L934 BasicCegarLoop]: 10 mSDtfsCounter, 390 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:57:09,766 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 182 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-11 00:57:09,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8992 states. [2022-02-11 00:57:09,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8992 to 7730. [2022-02-11 00:57:09,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7730 states, 7729 states have (on average 2.387242851597878) internal successors, (18451), 7729 states have internal predecessors, (18451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7730 states to 7730 states and 18451 transitions. [2022-02-11 00:57:09,873 INFO L78 Accepts]: Start accepts. Automaton has 7730 states and 18451 transitions. Word has length 45 [2022-02-11 00:57:09,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:57:09,873 INFO L470 AbstractCegarLoop]: Abstraction has 7730 states and 18451 transitions. [2022-02-11 00:57:09,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.375) internal successors, (114), 47 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:09,873 INFO L276 IsEmpty]: Start isEmpty. Operand 7730 states and 18451 transitions. [2022-02-11 00:57:09,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-02-11 00:57:09,879 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:57:09,880 INFO L515 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:57:09,901 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 00:57:10,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:57:10,084 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:57:10,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:57:10,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1464272399, now seen corresponding path program 42 times [2022-02-11 00:57:10,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:57:10,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520447557] [2022-02-11 00:57:10,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:57:10,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:57:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:57:10,190 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 38 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-11 00:57:10,190 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:57:10,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520447557] [2022-02-11 00:57:10,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520447557] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:57:10,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530917446] [2022-02-11 00:57:10,190 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:57:10,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:57:10,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:57:10,204 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 00:57:10,228 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 00:57:10,253 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-02-11 00:57:10,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:57:10,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 39 conjunts are in the unsatisfiable core [2022-02-11 00:57:10,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:57:10,626 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 20 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:10,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:57:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 25 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:11,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530917446] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:57:11,431 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:57:11,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21, 22] total 52 [2022-02-11 00:57:11,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283285031] [2022-02-11 00:57:11,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:57:11,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-11 00:57:11,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:57:11,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-11 00:57:11,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=516, Invalid=2240, Unknown=0, NotChecked=0, Total=2756 [2022-02-11 00:57:11,432 INFO L87 Difference]: Start difference. First operand 7730 states and 18451 transitions. Second operand has 53 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 52 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:16,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:57:16,984 INFO L93 Difference]: Finished difference Result 27688 states and 62379 transitions. [2022-02-11 00:57:16,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-02-11 00:57:16,986 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 52 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-02-11 00:57:16,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:57:17,039 INFO L225 Difference]: With dead ends: 27688 [2022-02-11 00:57:17,039 INFO L226 Difference]: Without dead ends: 27340 [2022-02-11 00:57:17,041 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15186 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=9660, Invalid=28170, Unknown=0, NotChecked=0, Total=37830 [2022-02-11 00:57:17,041 INFO L934 BasicCegarLoop]: 17 mSDtfsCounter, 995 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 1993 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 2325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 00:57:17,041 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 254 Invalid, 2325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1993 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 00:57:17,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27340 states. [2022-02-11 00:57:17,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27340 to 10468. [2022-02-11 00:57:17,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10468 states, 10467 states have (on average 2.3889366580682143) internal successors, (25005), 10467 states have internal predecessors, (25005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:17,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10468 states to 10468 states and 25005 transitions. [2022-02-11 00:57:17,373 INFO L78 Accepts]: Start accepts. Automaton has 10468 states and 25005 transitions. Word has length 45 [2022-02-11 00:57:17,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:57:17,373 INFO L470 AbstractCegarLoop]: Abstraction has 10468 states and 25005 transitions. [2022-02-11 00:57:17,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 52 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:17,374 INFO L276 IsEmpty]: Start isEmpty. Operand 10468 states and 25005 transitions. [2022-02-11 00:57:17,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-11 00:57:17,382 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:57:17,382 INFO L515 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:57:17,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-02-11 00:57:17,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:57:17,586 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:57:17,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:57:17,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1927395959, now seen corresponding path program 43 times [2022-02-11 00:57:17,586 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:57:17,586 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007352117] [2022-02-11 00:57:17,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:57:17,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:57:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:57:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 1 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:17,895 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:57:17,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007352117] [2022-02-11 00:57:17,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007352117] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:57:17,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054664194] [2022-02-11 00:57:17,896 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:57:17,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:57:17,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:57:17,897 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 00:57:17,901 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 00:57:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:57:17,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-11 00:57:17,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:57:18,087 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:18,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:57:18,823 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 64 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:18,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054664194] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:57:18,823 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:57:18,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 19] total 27 [2022-02-11 00:57:18,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280236058] [2022-02-11 00:57:18,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:57:18,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-11 00:57:18,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:57:18,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-11 00:57:18,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2022-02-11 00:57:18,824 INFO L87 Difference]: Start difference. First operand 10468 states and 25005 transitions. Second operand has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:19,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:57:19,103 INFO L93 Difference]: Finished difference Result 13463 states and 32382 transitions. [2022-02-11 00:57:19,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-11 00:57:19,104 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-02-11 00:57:19,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:57:19,125 INFO L225 Difference]: With dead ends: 13463 [2022-02-11 00:57:19,125 INFO L226 Difference]: Without dead ends: 13400 [2022-02-11 00:57:19,127 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 82 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2022-02-11 00:57:19,128 INFO L934 BasicCegarLoop]: 67 mSDtfsCounter, 290 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:57:19,128 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 700 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-11 00:57:19,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13400 states. [2022-02-11 00:57:19,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13400 to 12840. [2022-02-11 00:57:19,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12840 states, 12839 states have (on average 2.4131941740010903) internal successors, (30983), 12839 states have internal predecessors, (30983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:19,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12840 states to 12840 states and 30983 transitions. [2022-02-11 00:57:19,366 INFO L78 Accepts]: Start accepts. Automaton has 12840 states and 30983 transitions. Word has length 47 [2022-02-11 00:57:19,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:57:19,366 INFO L470 AbstractCegarLoop]: Abstraction has 12840 states and 30983 transitions. [2022-02-11 00:57:19,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:19,366 INFO L276 IsEmpty]: Start isEmpty. Operand 12840 states and 30983 transitions. [2022-02-11 00:57:19,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-11 00:57:19,377 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:57:19,377 INFO L515 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:57:19,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-02-11 00:57:19,584 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,SelfDestructingSolverStorable44 [2022-02-11 00:57:19,584 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:57:19,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:57:19,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1790816549, now seen corresponding path program 44 times [2022-02-11 00:57:19,585 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:57:19,585 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970525560] [2022-02-11 00:57:19,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:57:19,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:57:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:57:19,927 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:19,927 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:57:19,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970525560] [2022-02-11 00:57:19,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970525560] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:57:19,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361895602] [2022-02-11 00:57:19,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:57:19,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:57:19,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:57:19,929 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 00:57:19,929 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 00:57:19,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:57:19,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:57:19,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-11 00:57:19,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:57:20,618 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:20,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:57:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:23,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361895602] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:57:23,731 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:57:23,731 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 58 [2022-02-11 00:57:23,731 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491276134] [2022-02-11 00:57:23,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:57:23,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-11 00:57:23,731 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:57:23,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-11 00:57:23,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=518, Invalid=2904, Unknown=0, NotChecked=0, Total=3422 [2022-02-11 00:57:23,732 INFO L87 Difference]: Start difference. First operand 12840 states and 30983 transitions. Second operand has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 58 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 00:57:43,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:57:43,232 INFO L93 Difference]: Finished difference Result 20720 states and 47882 transitions. [2022-02-11 00:57:43,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-02-11 00:57:43,232 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 58 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-02-11 00:57:43,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:57:43,263 INFO L225 Difference]: With dead ends: 20720 [2022-02-11 00:57:43,263 INFO L226 Difference]: Without dead ends: 19952 [2022-02-11 00:57:43,265 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11526 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=6771, Invalid=26535, Unknown=0, NotChecked=0, Total=33306 [2022-02-11 00:57:43,265 INFO L934 BasicCegarLoop]: 42 mSDtfsCounter, 972 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 3529 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 3950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 3529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-11 00:57:43,265 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 776 Invalid, 3950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 3529 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-11 00:57:43,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19952 states. [2022-02-11 00:57:43,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19952 to 14485. [2022-02-11 00:57:43,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14485 states, 14484 states have (on average 2.24081745374206) internal successors, (32456), 14484 states have internal predecessors, (32456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14485 states to 14485 states and 32456 transitions. [2022-02-11 00:57:43,541 INFO L78 Accepts]: Start accepts. Automaton has 14485 states and 32456 transitions. Word has length 47 [2022-02-11 00:57:43,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:57:43,542 INFO L470 AbstractCegarLoop]: Abstraction has 14485 states and 32456 transitions. [2022-02-11 00:57:43,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 58 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 00:57:43,542 INFO L276 IsEmpty]: Start isEmpty. Operand 14485 states and 32456 transitions. [2022-02-11 00:57:43,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-11 00:57:43,553 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:57:43,553 INFO L515 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:57:43,576 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 00:57:43,773 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,SelfDestructingSolverStorable45 [2022-02-11 00:57:43,773 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:57:43,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:57:43,774 INFO L85 PathProgramCache]: Analyzing trace with hash -129322871, now seen corresponding path program 45 times [2022-02-11 00:57:43,774 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:57:43,774 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091972556] [2022-02-11 00:57:43,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:57:43,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:57:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:57:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 15 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:43,982 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:57:43,983 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091972556] [2022-02-11 00:57:43,983 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091972556] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:57:43,983 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006046246] [2022-02-11 00:57:43,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:57:43,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:57:43,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:57:43,984 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 00:57:43,985 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 00:57:44,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-02-11 00:57:44,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:57:44,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 00:57:44,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:57:44,668 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 15 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:44,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:57:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 22 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:47,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006046246] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:57:47,044 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:57:47,045 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 22, 22] total 53 [2022-02-11 00:57:47,045 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455212723] [2022-02-11 00:57:47,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:57:47,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-11 00:57:47,045 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:57:47,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-11 00:57:47,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=660, Invalid=2202, Unknown=0, NotChecked=0, Total=2862 [2022-02-11 00:57:47,046 INFO L87 Difference]: Start difference. First operand 14485 states and 32456 transitions. Second operand has 54 states, 54 states have (on average 2.240740740740741) internal successors, (121), 53 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:55,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:57:55,996 INFO L93 Difference]: Finished difference Result 24787 states and 56061 transitions. [2022-02-11 00:57:55,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-11 00:57:55,996 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.240740740740741) internal successors, (121), 53 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-02-11 00:57:55,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:57:56,039 INFO L225 Difference]: With dead ends: 24787 [2022-02-11 00:57:56,039 INFO L226 Difference]: Without dead ends: 24781 [2022-02-11 00:57:56,040 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8411 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=5603, Invalid=17653, Unknown=0, NotChecked=0, Total=23256 [2022-02-11 00:57:56,041 INFO L934 BasicCegarLoop]: 20 mSDtfsCounter, 986 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 3687 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 4295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 3687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:57:56,042 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 283 Invalid, 4295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 3687 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-11 00:57:56,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24781 states. [2022-02-11 00:57:56,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24781 to 18743. [2022-02-11 00:57:56,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18743 states, 18742 states have (on average 2.2557891366983247) internal successors, (42278), 18742 states have internal predecessors, (42278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:56,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18743 states to 18743 states and 42278 transitions. [2022-02-11 00:57:56,347 INFO L78 Accepts]: Start accepts. Automaton has 18743 states and 42278 transitions. Word has length 47 [2022-02-11 00:57:56,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:57:56,347 INFO L470 AbstractCegarLoop]: Abstraction has 18743 states and 42278 transitions. [2022-02-11 00:57:56,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.240740740740741) internal successors, (121), 53 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:57:56,348 INFO L276 IsEmpty]: Start isEmpty. Operand 18743 states and 42278 transitions. [2022-02-11 00:57:56,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-11 00:57:56,375 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:57:56,375 INFO L515 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:57:56,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-02-11 00:57:56,575 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,SelfDestructingSolverStorable46 [2022-02-11 00:57:56,575 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:57:56,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:57:56,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1055250745, now seen corresponding path program 46 times [2022-02-11 00:57:56,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:57:56,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825429633] [2022-02-11 00:57:56,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:57:56,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:57:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:57:56,719 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 51 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:56,719 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:57:56,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825429633] [2022-02-11 00:57:56,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825429633] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:57:56,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772020394] [2022-02-11 00:57:56,719 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:57:56,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:57:56,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:57:56,727 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 00:57:56,732 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 00:57:56,756 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:57:56,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:57:56,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 36 conjunts are in the unsatisfiable core [2022-02-11 00:57:56,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:57:57,457 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 51 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:57,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:57:58,147 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 58 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:57:58,147 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772020394] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:57:58,147 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:57:58,147 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 22, 22] total 52 [2022-02-11 00:57:58,147 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036416846] [2022-02-11 00:57:58,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:57:58,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-11 00:57:58,147 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:57:58,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-11 00:57:58,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=619, Invalid=2137, Unknown=0, NotChecked=0, Total=2756 [2022-02-11 00:57:58,148 INFO L87 Difference]: Start difference. First operand 18743 states and 42278 transitions. Second operand has 53 states, 53 states have (on average 2.2830188679245285) internal successors, (121), 52 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:03,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:58:03,276 INFO L93 Difference]: Finished difference Result 26020 states and 58276 transitions. [2022-02-11 00:58:03,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-02-11 00:58:03,277 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.2830188679245285) internal successors, (121), 52 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-02-11 00:58:03,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:58:03,327 INFO L225 Difference]: With dead ends: 26020 [2022-02-11 00:58:03,327 INFO L226 Difference]: Without dead ends: 26016 [2022-02-11 00:58:03,330 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16812 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=11497, Invalid=34085, Unknown=0, NotChecked=0, Total=45582 [2022-02-11 00:58:03,331 INFO L934 BasicCegarLoop]: 31 mSDtfsCounter, 728 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 1760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:58:03,331 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 345 Invalid, 1760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:58:03,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26016 states. [2022-02-11 00:58:03,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26016 to 18578. [2022-02-11 00:58:03,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18578 states, 18577 states have (on average 2.264143833772945) internal successors, (42061), 18577 states have internal predecessors, (42061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:03,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18578 states to 18578 states and 42061 transitions. [2022-02-11 00:58:03,650 INFO L78 Accepts]: Start accepts. Automaton has 18578 states and 42061 transitions. Word has length 47 [2022-02-11 00:58:03,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:58:03,650 INFO L470 AbstractCegarLoop]: Abstraction has 18578 states and 42061 transitions. [2022-02-11 00:58:03,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.2830188679245285) internal successors, (121), 52 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:03,651 INFO L276 IsEmpty]: Start isEmpty. Operand 18578 states and 42061 transitions. [2022-02-11 00:58:03,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-11 00:58:03,663 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:58:03,663 INFO L515 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:58:03,681 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 00:58:03,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:58:03,879 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:58:03,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:58:03,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1962795719, now seen corresponding path program 47 times [2022-02-11 00:58:03,879 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:58:03,879 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376944897] [2022-02-11 00:58:03,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:58:03,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:58:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:58:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:04,161 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:58:04,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376944897] [2022-02-11 00:58:04,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376944897] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:58:04,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514566782] [2022-02-11 00:58:04,162 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:58:04,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:58:04,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:58:04,164 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 00:58:04,192 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 00:58:04,199 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-02-11 00:58:04,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:58:04,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-11 00:58:04,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:58:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:04,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:58:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 72 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:05,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514566782] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:58:05,711 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:58:05,711 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 22] total 60 [2022-02-11 00:58:05,711 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663220074] [2022-02-11 00:58:05,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:58:05,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-11 00:58:05,711 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:58:05,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-11 00:58:05,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2961, Unknown=0, NotChecked=0, Total=3660 [2022-02-11 00:58:05,712 INFO L87 Difference]: Start difference. First operand 18578 states and 42061 transitions. Second operand has 61 states, 61 states have (on average 2.19672131147541) internal successors, (134), 60 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:11,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:58:11,276 INFO L93 Difference]: Finished difference Result 21738 states and 48486 transitions. [2022-02-11 00:58:11,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2022-02-11 00:58:11,287 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.19672131147541) internal successors, (134), 60 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-02-11 00:58:11,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:58:11,322 INFO L225 Difference]: With dead ends: 21738 [2022-02-11 00:58:11,322 INFO L226 Difference]: Without dead ends: 21222 [2022-02-11 00:58:11,326 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18341 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=12357, Invalid=38493, Unknown=0, NotChecked=0, Total=50850 [2022-02-11 00:58:11,327 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 906 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 2002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:58:11,327 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [906 Valid, 294 Invalid, 2002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1845 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-11 00:58:11,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21222 states. [2022-02-11 00:58:11,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21222 to 18290. [2022-02-11 00:58:11,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18290 states, 18289 states have (on average 2.263601071682432) internal successors, (41399), 18289 states have internal predecessors, (41399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:11,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18290 states to 18290 states and 41399 transitions. [2022-02-11 00:58:11,659 INFO L78 Accepts]: Start accepts. Automaton has 18290 states and 41399 transitions. Word has length 49 [2022-02-11 00:58:11,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:58:11,661 INFO L470 AbstractCegarLoop]: Abstraction has 18290 states and 41399 transitions. [2022-02-11 00:58:11,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.19672131147541) internal successors, (134), 60 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:11,661 INFO L276 IsEmpty]: Start isEmpty. Operand 18290 states and 41399 transitions. [2022-02-11 00:58:11,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-11 00:58:11,673 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:58:11,673 INFO L515 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:58:11,693 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 00:58:11,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-02-11 00:58:11,889 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:58:11,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:58:11,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1919003925, now seen corresponding path program 48 times [2022-02-11 00:58:11,890 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:58:11,890 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626922546] [2022-02-11 00:58:11,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:58:11,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:58:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:58:12,092 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 73 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:12,092 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:58:12,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626922546] [2022-02-11 00:58:12,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626922546] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:58:12,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140079158] [2022-02-11 00:58:12,092 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:58:12,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:58:12,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:58:12,093 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 00:58:12,094 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 00:58:12,125 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-02-11 00:58:12,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:58:12,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 37 conjunts are in the unsatisfiable core [2022-02-11 00:58:12,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:58:12,741 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 73 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:12,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:58:13,471 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:13,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140079158] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:58:13,471 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:58:13,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 23, 22] total 52 [2022-02-11 00:58:13,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180954966] [2022-02-11 00:58:13,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:58:13,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-11 00:58:13,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:58:13,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-11 00:58:13,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=661, Invalid=2095, Unknown=0, NotChecked=0, Total=2756 [2022-02-11 00:58:13,473 INFO L87 Difference]: Start difference. First operand 18290 states and 41399 transitions. Second operand has 53 states, 53 states have (on average 2.3773584905660377) internal successors, (126), 52 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 00:58:19,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:58:19,002 INFO L93 Difference]: Finished difference Result 19699 states and 44208 transitions. [2022-02-11 00:58:19,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2022-02-11 00:58:19,002 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.3773584905660377) internal successors, (126), 52 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) Word has length 49 [2022-02-11 00:58:19,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:58:19,031 INFO L225 Difference]: With dead ends: 19699 [2022-02-11 00:58:19,031 INFO L226 Difference]: Without dead ends: 19695 [2022-02-11 00:58:19,033 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23346 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=14862, Invalid=44918, Unknown=0, NotChecked=0, Total=59780 [2022-02-11 00:58:19,047 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 482 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:58:19,047 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 167 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:58:19,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19695 states. [2022-02-11 00:58:19,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19695 to 18290. [2022-02-11 00:58:19,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18290 states, 18289 states have (on average 2.2634917163322217) internal successors, (41397), 18289 states have internal predecessors, (41397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18290 states to 18290 states and 41397 transitions. [2022-02-11 00:58:19,297 INFO L78 Accepts]: Start accepts. Automaton has 18290 states and 41397 transitions. Word has length 49 [2022-02-11 00:58:19,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:58:19,298 INFO L470 AbstractCegarLoop]: Abstraction has 18290 states and 41397 transitions. [2022-02-11 00:58:19,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.3773584905660377) internal successors, (126), 52 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 00:58:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 18290 states and 41397 transitions. [2022-02-11 00:58:19,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-11 00:58:19,310 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:58:19,310 INFO L515 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:58:19,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-02-11 00:58:19,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-02-11 00:58:19,526 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:58:19,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:58:19,526 INFO L85 PathProgramCache]: Analyzing trace with hash 736975417, now seen corresponding path program 49 times [2022-02-11 00:58:19,526 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:58:19,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818608999] [2022-02-11 00:58:19,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:58:19,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:58:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:58:19,754 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 56 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:19,754 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:58:19,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818608999] [2022-02-11 00:58:19,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818608999] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:58:19,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899193272] [2022-02-11 00:58:19,755 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:58:19,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:58:19,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:58:19,756 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 00:58:19,759 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 00:58:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:58:19,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-11 00:58:19,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:58:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 56 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:20,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:58:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 49 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:21,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899193272] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:58:21,085 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:58:21,085 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 24] total 65 [2022-02-11 00:58:21,085 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399125363] [2022-02-11 00:58:21,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:58:21,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-11 00:58:21,086 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:58:21,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-11 00:58:21,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=772, Invalid=3518, Unknown=0, NotChecked=0, Total=4290 [2022-02-11 00:58:21,086 INFO L87 Difference]: Start difference. First operand 18290 states and 41397 transitions. Second operand has 66 states, 66 states have (on average 2.121212121212121) internal successors, (140), 65 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:30,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:58:30,212 INFO L93 Difference]: Finished difference Result 43892 states and 98386 transitions. [2022-02-11 00:58:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2022-02-11 00:58:30,212 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.121212121212121) internal successors, (140), 65 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-02-11 00:58:30,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:58:30,288 INFO L225 Difference]: With dead ends: 43892 [2022-02-11 00:58:30,288 INFO L226 Difference]: Without dead ends: 43177 [2022-02-11 00:58:30,292 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42237 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=24395, Invalid=74515, Unknown=0, NotChecked=0, Total=98910 [2022-02-11 00:58:30,292 INFO L934 BasicCegarLoop]: 38 mSDtfsCounter, 1531 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 3044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:58:30,292 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1531 Valid, 665 Invalid, 3044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-11 00:58:30,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43177 states. [2022-02-11 00:58:30,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43177 to 21332. [2022-02-11 00:58:30,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21332 states, 21331 states have (on average 2.2915475130092355) internal successors, (48881), 21331 states have internal predecessors, (48881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:30,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21332 states to 21332 states and 48881 transitions. [2022-02-11 00:58:30,870 INFO L78 Accepts]: Start accepts. Automaton has 21332 states and 48881 transitions. Word has length 49 [2022-02-11 00:58:30,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:58:30,870 INFO L470 AbstractCegarLoop]: Abstraction has 21332 states and 48881 transitions. [2022-02-11 00:58:30,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.121212121212121) internal successors, (140), 65 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:30,871 INFO L276 IsEmpty]: Start isEmpty. Operand 21332 states and 48881 transitions. [2022-02-11 00:58:30,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-11 00:58:30,887 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:58:30,887 INFO L515 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:58:30,905 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 00:58:31,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:58:31,103 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:58:31,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:58:31,103 INFO L85 PathProgramCache]: Analyzing trace with hash -167181371, now seen corresponding path program 50 times [2022-02-11 00:58:31,103 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:58:31,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101494808] [2022-02-11 00:58:31,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:58:31,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:58:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:58:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 1 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:31,321 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:58:31,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101494808] [2022-02-11 00:58:31,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101494808] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:58:31,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061568197] [2022-02-11 00:58:31,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:58:31,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:58:31,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:58:31,326 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 00:58:31,337 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 00:58:31,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:58:31,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:58:31,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 39 conjunts are in the unsatisfiable core [2022-02-11 00:58:31,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:58:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:31,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:58:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:32,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061568197] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:58:32,060 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:58:32,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 21] total 30 [2022-02-11 00:58:32,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120351865] [2022-02-11 00:58:32,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:58:32,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-11 00:58:32,061 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:58:32,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-11 00:58:32,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=642, Unknown=0, NotChecked=0, Total=870 [2022-02-11 00:58:32,061 INFO L87 Difference]: Start difference. First operand 21332 states and 48881 transitions. Second operand has 30 states, 30 states have (on average 3.2) internal successors, (96), 30 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:32,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:58:32,417 INFO L93 Difference]: Finished difference Result 26854 states and 62395 transitions. [2022-02-11 00:58:32,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-11 00:58:32,417 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.2) internal successors, (96), 30 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-11 00:58:32,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:58:32,466 INFO L225 Difference]: With dead ends: 26854 [2022-02-11 00:58:32,467 INFO L226 Difference]: Without dead ends: 26785 [2022-02-11 00:58:32,467 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 89 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=228, Invalid=642, Unknown=0, NotChecked=0, Total=870 [2022-02-11 00:58:32,468 INFO L934 BasicCegarLoop]: 74 mSDtfsCounter, 309 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:58:32,468 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 896 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:58:32,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26785 states. [2022-02-11 00:58:32,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26785 to 25947. [2022-02-11 00:58:33,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25947 states, 25946 states have (on average 2.3242503661450704) internal successors, (60305), 25946 states have internal predecessors, (60305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:33,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25947 states to 25947 states and 60305 transitions. [2022-02-11 00:58:33,082 INFO L78 Accepts]: Start accepts. Automaton has 25947 states and 60305 transitions. Word has length 51 [2022-02-11 00:58:33,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:58:33,083 INFO L470 AbstractCegarLoop]: Abstraction has 25947 states and 60305 transitions. [2022-02-11 00:58:33,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.2) internal successors, (96), 30 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:33,083 INFO L276 IsEmpty]: Start isEmpty. Operand 25947 states and 60305 transitions. [2022-02-11 00:58:33,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-11 00:58:33,101 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:58:33,101 INFO L515 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:58:33,119 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 00:58:33,317 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,SelfDestructingSolverStorable51 [2022-02-11 00:58:33,317 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:58:33,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:58:33,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1055790999, now seen corresponding path program 51 times [2022-02-11 00:58:33,317 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:58:33,318 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973535221] [2022-02-11 00:58:33,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:58:33,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:58:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:58:33,737 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:33,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:58:33,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973535221] [2022-02-11 00:58:33,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973535221] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:58:33,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969309921] [2022-02-11 00:58:33,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:58:33,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:58:33,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:58:33,748 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 00:58:33,749 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 00:58:33,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-02-11 00:58:33,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:58:33,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 36 conjunts are in the unsatisfiable core [2022-02-11 00:58:33,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:58:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 20 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:34,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:58:34,422 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 64 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:34,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969309921] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:58:34,422 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:58:34,422 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 13] total 45 [2022-02-11 00:58:34,422 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349145802] [2022-02-11 00:58:34,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:58:34,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-11 00:58:34,422 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:58:34,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-11 00:58:34,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=1643, Unknown=0, NotChecked=0, Total=1980 [2022-02-11 00:58:34,423 INFO L87 Difference]: Start difference. First operand 25947 states and 60305 transitions. Second operand has 45 states, 45 states have (on average 2.8444444444444446) internal successors, (128), 45 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:36,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:58:36,150 INFO L93 Difference]: Finished difference Result 36532 states and 85714 transitions. [2022-02-11 00:58:36,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-11 00:58:36,150 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.8444444444444446) internal successors, (128), 45 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-11 00:58:36,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:58:36,216 INFO L225 Difference]: With dead ends: 36532 [2022-02-11 00:58:36,216 INFO L226 Difference]: Without dead ends: 36520 [2022-02-11 00:58:36,216 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 77 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1438 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=946, Invalid=5534, Unknown=0, NotChecked=0, Total=6480 [2022-02-11 00:58:36,216 INFO L934 BasicCegarLoop]: 54 mSDtfsCounter, 641 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 00:58:36,216 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [641 Valid, 838 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 00:58:36,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36520 states. [2022-02-11 00:58:36,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36520 to 25202. [2022-02-11 00:58:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25202 states, 25201 states have (on average 2.336097773897861) internal successors, (58872), 25201 states have internal predecessors, (58872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:36,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25202 states to 25202 states and 58872 transitions. [2022-02-11 00:58:36,657 INFO L78 Accepts]: Start accepts. Automaton has 25202 states and 58872 transitions. Word has length 51 [2022-02-11 00:58:36,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:58:36,657 INFO L470 AbstractCegarLoop]: Abstraction has 25202 states and 58872 transitions. [2022-02-11 00:58:36,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.8444444444444446) internal successors, (128), 45 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:36,657 INFO L276 IsEmpty]: Start isEmpty. Operand 25202 states and 58872 transitions. [2022-02-11 00:58:36,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-11 00:58:36,674 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:58:36,674 INFO L515 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:58:36,691 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 00:58:36,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:58:36,887 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:58:36,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:58:36,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1171523909, now seen corresponding path program 52 times [2022-02-11 00:58:36,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:58:36,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016696554] [2022-02-11 00:58:36,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:58:36,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:58:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:58:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 17 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:37,190 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:58:37,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016696554] [2022-02-11 00:58:37,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016696554] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:58:37,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881334613] [2022-02-11 00:58:37,191 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:58:37,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:58:37,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:58:37,192 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 00:58:37,192 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 00:58:37,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:58:37,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:58:37,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 52 conjunts are in the unsatisfiable core [2022-02-11 00:58:37,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:58:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 17 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:38,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:58:41,621 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 25 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:41,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881334613] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:58:41,621 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:58:41,622 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 24, 24] total 58 [2022-02-11 00:58:41,622 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233389534] [2022-02-11 00:58:41,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:58:41,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-11 00:58:41,622 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:58:41,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-11 00:58:41,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=793, Invalid=2629, Unknown=0, NotChecked=0, Total=3422 [2022-02-11 00:58:41,622 INFO L87 Difference]: Start difference. First operand 25202 states and 58872 transitions. Second operand has 59 states, 59 states have (on average 2.2542372881355934) internal successors, (133), 58 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:53,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:58:53,074 INFO L93 Difference]: Finished difference Result 34543 states and 81614 transitions. [2022-02-11 00:58:53,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-11 00:58:53,075 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.2542372881355934) internal successors, (133), 58 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-11 00:58:53,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:58:53,138 INFO L225 Difference]: With dead ends: 34543 [2022-02-11 00:58:53,138 INFO L226 Difference]: Without dead ends: 34535 [2022-02-11 00:58:53,139 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10326 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=6811, Invalid=21581, Unknown=0, NotChecked=0, Total=28392 [2022-02-11 00:58:53,139 INFO L934 BasicCegarLoop]: 18 mSDtfsCounter, 1051 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 4721 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 5412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 4721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:58:53,139 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 292 Invalid, 5412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 4721 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-11 00:58:53,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34535 states. [2022-02-11 00:58:53,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34535 to 25675. [2022-02-11 00:58:53,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25675 states, 25674 states have (on average 2.361221469190621) internal successors, (60622), 25674 states have internal predecessors, (60622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:53,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25675 states to 25675 states and 60622 transitions. [2022-02-11 00:58:53,627 INFO L78 Accepts]: Start accepts. Automaton has 25675 states and 60622 transitions. Word has length 51 [2022-02-11 00:58:53,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:58:53,627 INFO L470 AbstractCegarLoop]: Abstraction has 25675 states and 60622 transitions. [2022-02-11 00:58:53,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.2542372881355934) internal successors, (133), 58 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:58:53,627 INFO L276 IsEmpty]: Start isEmpty. Operand 25675 states and 60622 transitions. [2022-02-11 00:58:53,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-11 00:58:53,646 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:58:53,646 INFO L515 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:58:53,662 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 00:58:53,862 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,SelfDestructingSolverStorable53 [2022-02-11 00:58:53,862 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:58:53,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:58:53,862 INFO L85 PathProgramCache]: Analyzing trace with hash -697184709, now seen corresponding path program 53 times [2022-02-11 00:58:53,862 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:58:53,862 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480154361] [2022-02-11 00:58:53,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:58:53,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:58:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:58:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 79 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-11 00:58:54,050 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:58:54,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480154361] [2022-02-11 00:58:54,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480154361] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:58:54,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366319144] [2022-02-11 00:58:54,051 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:58:54,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:58:54,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:58:54,052 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 00:58:54,053 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 00:58:54,084 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2022-02-11 00:58:54,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:58:54,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-11 00:58:54,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:58:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 49 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:54,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:58:55,213 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 49 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:58:55,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366319144] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:58:55,213 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:58:55,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24, 24] total 62 [2022-02-11 00:58:55,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838859552] [2022-02-11 00:58:55,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:58:55,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-02-11 00:58:55,214 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:58:55,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-02-11 00:58:55,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=745, Invalid=3161, Unknown=0, NotChecked=0, Total=3906 [2022-02-11 00:58:55,215 INFO L87 Difference]: Start difference. First operand 25675 states and 60622 transitions. Second operand has 63 states, 63 states have (on average 2.238095238095238) internal successors, (141), 62 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:03,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:59:03,675 INFO L93 Difference]: Finished difference Result 79019 states and 180082 transitions. [2022-02-11 00:59:03,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2022-02-11 00:59:03,676 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.238095238095238) internal successors, (141), 62 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-11 00:59:03,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:59:03,834 INFO L225 Difference]: With dead ends: 79019 [2022-02-11 00:59:03,834 INFO L226 Difference]: Without dead ends: 78230 [2022-02-11 00:59:03,839 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52482 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=27833, Invalid=80737, Unknown=0, NotChecked=0, Total=108570 [2022-02-11 00:59:03,840 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 1246 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 2901 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 3225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 2901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:59:03,840 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1246 Valid, 441 Invalid, 3225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 2901 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-11 00:59:03,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78230 states. [2022-02-11 00:59:04,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78230 to 26716. [2022-02-11 00:59:04,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26716 states, 26715 states have (on average 2.348493355792626) internal successors, (62740), 26715 states have internal predecessors, (62740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:04,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26716 states to 26716 states and 62740 transitions. [2022-02-11 00:59:04,650 INFO L78 Accepts]: Start accepts. Automaton has 26716 states and 62740 transitions. Word has length 51 [2022-02-11 00:59:04,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:59:04,650 INFO L470 AbstractCegarLoop]: Abstraction has 26716 states and 62740 transitions. [2022-02-11 00:59:04,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.238095238095238) internal successors, (141), 62 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:04,650 INFO L276 IsEmpty]: Start isEmpty. Operand 26716 states and 62740 transitions. [2022-02-11 00:59:04,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-11 00:59:04,667 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:59:04,667 INFO L515 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:59:04,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-02-11 00:59:04,879 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,SelfDestructingSolverStorable54 [2022-02-11 00:59:04,879 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:59:04,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:59:04,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1152851267, now seen corresponding path program 54 times [2022-02-11 00:59:04,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:59:04,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024444828] [2022-02-11 00:59:04,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:59:04,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:59:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:59:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 66 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:05,050 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:59:05,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024444828] [2022-02-11 00:59:05,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024444828] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:59:05,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655725577] [2022-02-11 00:59:05,051 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:59:05,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:59:05,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:59:05,052 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 00:59:05,053 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 00:59:05,088 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-02-11 00:59:05,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:59:05,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 40 conjunts are in the unsatisfiable core [2022-02-11 00:59:05,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:59:05,892 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 66 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:05,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:59:06,416 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 74 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:06,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655725577] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:59:06,416 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:59:06,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 24, 24] total 57 [2022-02-11 00:59:06,417 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662184063] [2022-02-11 00:59:06,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:59:06,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-02-11 00:59:06,417 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:59:06,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-02-11 00:59:06,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=736, Invalid=2570, Unknown=0, NotChecked=0, Total=3306 [2022-02-11 00:59:06,418 INFO L87 Difference]: Start difference. First operand 26716 states and 62740 transitions. Second operand has 58 states, 58 states have (on average 2.293103448275862) internal successors, (133), 57 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:11,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:59:11,095 INFO L93 Difference]: Finished difference Result 32210 states and 74811 transitions. [2022-02-11 00:59:11,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-02-11 00:59:11,095 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.293103448275862) internal successors, (133), 57 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-02-11 00:59:11,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:59:11,149 INFO L225 Difference]: With dead ends: 32210 [2022-02-11 00:59:11,149 INFO L226 Difference]: Without dead ends: 32204 [2022-02-11 00:59:11,152 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24859 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=16298, Invalid=48472, Unknown=0, NotChecked=0, Total=64770 [2022-02-11 00:59:11,159 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 646 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:59:11,159 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 199 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:59:11,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32204 states. [2022-02-11 00:59:11,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32204 to 25976. [2022-02-11 00:59:11,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25976 states, 25975 states have (on average 2.3487584215591917) internal successors, (61009), 25975 states have internal predecessors, (61009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:11,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25976 states to 25976 states and 61009 transitions. [2022-02-11 00:59:11,608 INFO L78 Accepts]: Start accepts. Automaton has 25976 states and 61009 transitions. Word has length 51 [2022-02-11 00:59:11,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:59:11,608 INFO L470 AbstractCegarLoop]: Abstraction has 25976 states and 61009 transitions. [2022-02-11 00:59:11,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.293103448275862) internal successors, (133), 57 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:11,608 INFO L276 IsEmpty]: Start isEmpty. Operand 25976 states and 61009 transitions. [2022-02-11 00:59:11,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-11 00:59:11,628 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:59:11,628 INFO L515 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:59:11,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-02-11 00:59:11,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:59:11,843 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:59:11,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:59:11,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2117849603, now seen corresponding path program 55 times [2022-02-11 00:59:11,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:59:11,844 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420895978] [2022-02-11 00:59:11,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:59:11,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:59:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:59:12,094 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:12,094 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:59:12,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420895978] [2022-02-11 00:59:12,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420895978] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:59:12,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507979910] [2022-02-11 00:59:12,095 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:59:12,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:59:12,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:59:12,112 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 00:59:12,113 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 00:59:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:59:12,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-11 00:59:12,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:59:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:12,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:59:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 90 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:13,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507979910] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:59:13,216 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:59:13,216 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 24] total 66 [2022-02-11 00:59:13,216 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174454639] [2022-02-11 00:59:13,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:59:13,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-11 00:59:13,216 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:59:13,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-11 00:59:13,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=835, Invalid=3587, Unknown=0, NotChecked=0, Total=4422 [2022-02-11 00:59:13,217 INFO L87 Difference]: Start difference. First operand 25976 states and 61009 transitions. Second operand has 67 states, 67 states have (on average 2.1791044776119404) internal successors, (146), 66 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:19,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:59:19,106 INFO L93 Difference]: Finished difference Result 31601 states and 72593 transitions. [2022-02-11 00:59:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-02-11 00:59:19,110 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.1791044776119404) internal successors, (146), 66 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-02-11 00:59:19,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:59:19,161 INFO L225 Difference]: With dead ends: 31601 [2022-02-11 00:59:19,161 INFO L226 Difference]: Without dead ends: 30794 [2022-02-11 00:59:19,166 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26120 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=17002, Invalid=52958, Unknown=0, NotChecked=0, Total=69960 [2022-02-11 00:59:19,167 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 765 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 2431 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 2583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 2431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:59:19,167 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 338 Invalid, 2583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 2431 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-11 00:59:19,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30794 states. [2022-02-11 00:59:19,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30794 to 25945. [2022-02-11 00:59:19,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25945 states, 25944 states have (on average 2.3479031760715388) internal successors, (60914), 25944 states have internal predecessors, (60914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:19,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25945 states to 25945 states and 60914 transitions. [2022-02-11 00:59:19,583 INFO L78 Accepts]: Start accepts. Automaton has 25945 states and 60914 transitions. Word has length 53 [2022-02-11 00:59:19,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:59:19,583 INFO L470 AbstractCegarLoop]: Abstraction has 25945 states and 60914 transitions. [2022-02-11 00:59:19,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.1791044776119404) internal successors, (146), 66 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:19,583 INFO L276 IsEmpty]: Start isEmpty. Operand 25945 states and 60914 transitions. [2022-02-11 00:59:19,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-02-11 00:59:19,602 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:59:19,602 INFO L515 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:59:19,620 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 00:59:19,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:59:19,820 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:59:19,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:59:19,821 INFO L85 PathProgramCache]: Analyzing trace with hash -226669163, now seen corresponding path program 56 times [2022-02-11 00:59:19,821 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:59:19,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797294736] [2022-02-11 00:59:19,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:59:19,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:59:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:59:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 91 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:19,986 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:59:19,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797294736] [2022-02-11 00:59:19,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797294736] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:59:19,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066861920] [2022-02-11 00:59:19,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:59:19,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:59:19,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:59:19,988 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 00:59:19,989 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 00:59:20,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:59:20,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:59:20,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-11 00:59:20,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:59:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 91 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:20,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:59:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:21,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066861920] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:59:21,474 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:59:21,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 24, 23] total 55 [2022-02-11 00:59:21,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025374713] [2022-02-11 00:59:21,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:59:21,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-11 00:59:21,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:59:21,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-11 00:59:21,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=746, Invalid=2334, Unknown=0, NotChecked=0, Total=3080 [2022-02-11 00:59:21,475 INFO L87 Difference]: Start difference. First operand 25945 states and 60914 transitions. Second operand has 56 states, 56 states have (on average 2.4642857142857144) internal successors, (138), 55 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:25,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:59:25,634 INFO L93 Difference]: Finished difference Result 27616 states and 64299 transitions. [2022-02-11 00:59:25,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-02-11 00:59:25,634 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.4642857142857144) internal successors, (138), 55 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-02-11 00:59:25,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:59:25,692 INFO L225 Difference]: With dead ends: 27616 [2022-02-11 00:59:25,692 INFO L226 Difference]: Without dead ends: 27612 [2022-02-11 00:59:25,694 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13769 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=10216, Invalid=28790, Unknown=0, NotChecked=0, Total=39006 [2022-02-11 00:59:25,694 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 470 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 00:59:25,694 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 123 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 00:59:25,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27612 states. [2022-02-11 00:59:26,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27612 to 25945. [2022-02-11 00:59:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25945 states, 25944 states have (on average 2.347787542399013) internal successors, (60911), 25944 states have internal predecessors, (60911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:26,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25945 states to 25945 states and 60911 transitions. [2022-02-11 00:59:26,146 INFO L78 Accepts]: Start accepts. Automaton has 25945 states and 60911 transitions. Word has length 53 [2022-02-11 00:59:26,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:59:26,147 INFO L470 AbstractCegarLoop]: Abstraction has 25945 states and 60911 transitions. [2022-02-11 00:59:26,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.4642857142857144) internal successors, (138), 55 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:26,147 INFO L276 IsEmpty]: Start isEmpty. Operand 25945 states and 60911 transitions. [2022-02-11 00:59:26,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-11 00:59:26,168 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:59:26,168 INFO L515 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:59:26,186 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 00:59:26,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:59:26,384 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:59:26,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:59:26,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1484254207, now seen corresponding path program 57 times [2022-02-11 00:59:26,384 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:59:26,384 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010385626] [2022-02-11 00:59:26,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:59:26,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:59:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:59:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 1 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:26,596 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:59:26,596 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010385626] [2022-02-11 00:59:26,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010385626] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:59:26,596 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40194730] [2022-02-11 00:59:26,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:59:26,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:59:26,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:59:26,600 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 00:59:26,601 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 00:59:26,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-02-11 00:59:26,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:59:26,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-11 00:59:26,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:59:26,920 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 25 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:26,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:59:27,213 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 81 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:27,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40194730] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:59:27,214 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:59:27,214 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20, 16] total 29 [2022-02-11 00:59:27,214 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907531619] [2022-02-11 00:59:27,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:59:27,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-11 00:59:27,214 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:59:27,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-11 00:59:27,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2022-02-11 00:59:27,214 INFO L87 Difference]: Start difference. First operand 25945 states and 60911 transitions. Second operand has 29 states, 29 states have (on average 3.7241379310344827) internal successors, (108), 29 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:28,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:59:28,059 INFO L93 Difference]: Finished difference Result 36620 states and 86993 transitions. [2022-02-11 00:59:28,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-11 00:59:28,060 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.7241379310344827) internal successors, (108), 29 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-02-11 00:59:28,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:59:28,225 INFO L225 Difference]: With dead ends: 36620 [2022-02-11 00:59:28,225 INFO L226 Difference]: Without dead ends: 36529 [2022-02-11 00:59:28,225 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 100 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=1287, Unknown=0, NotChecked=0, Total=1640 [2022-02-11 00:59:28,226 INFO L934 BasicCegarLoop]: 113 mSDtfsCounter, 307 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 00:59:28,226 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 1263 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 00:59:28,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36529 states. [2022-02-11 00:59:28,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36529 to 31629. [2022-02-11 00:59:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31629 states, 31628 states have (on average 2.3720753762488935) internal successors, (75024), 31628 states have internal predecessors, (75024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31629 states to 31629 states and 75024 transitions. [2022-02-11 00:59:28,837 INFO L78 Accepts]: Start accepts. Automaton has 31629 states and 75024 transitions. Word has length 55 [2022-02-11 00:59:28,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:59:28,837 INFO L470 AbstractCegarLoop]: Abstraction has 31629 states and 75024 transitions. [2022-02-11 00:59:28,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.7241379310344827) internal successors, (108), 29 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:28,837 INFO L276 IsEmpty]: Start isEmpty. Operand 31629 states and 75024 transitions. [2022-02-11 00:59:28,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-11 00:59:28,862 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:59:28,862 INFO L515 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:59:28,886 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 00:59:29,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-02-11 00:59:29,079 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:59:29,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:59:29,079 INFO L85 PathProgramCache]: Analyzing trace with hash 783619073, now seen corresponding path program 58 times [2022-02-11 00:59:29,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:59:29,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704017441] [2022-02-11 00:59:29,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:59:29,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:59:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:59:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 19 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:29,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:59:29,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704017441] [2022-02-11 00:59:29,391 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704017441] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:59:29,391 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861867975] [2022-02-11 00:59:29,391 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:59:29,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:59:29,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:59:29,393 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 00:59:29,393 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 00:59:29,422 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:59:29,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:59:29,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 58 conjunts are in the unsatisfiable core [2022-02-11 00:59:29,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:59:30,363 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 19 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:30,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:59:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 28 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:34,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861867975] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:59:34,316 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:59:34,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 26, 26] total 63 [2022-02-11 00:59:34,317 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777015121] [2022-02-11 00:59:34,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:59:34,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-02-11 00:59:34,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:59:34,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-02-11 00:59:34,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=939, Invalid=3093, Unknown=0, NotChecked=0, Total=4032 [2022-02-11 00:59:34,317 INFO L87 Difference]: Start difference. First operand 31629 states and 75024 transitions. Second operand has 64 states, 64 states have (on average 2.265625) internal successors, (145), 63 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:49,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:59:49,765 INFO L93 Difference]: Finished difference Result 50046 states and 119428 transitions. [2022-02-11 00:59:49,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-02-11 00:59:49,765 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.265625) internal successors, (145), 63 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-02-11 00:59:49,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:59:49,859 INFO L225 Difference]: With dead ends: 50046 [2022-02-11 00:59:49,859 INFO L226 Difference]: Without dead ends: 50028 [2022-02-11 00:59:49,861 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15409 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=9978, Invalid=32252, Unknown=0, NotChecked=0, Total=42230 [2022-02-11 00:59:49,861 INFO L934 BasicCegarLoop]: 40 mSDtfsCounter, 1173 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 7514 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 8245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 7514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-11 00:59:49,861 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 874 Invalid, 8245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 7514 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-02-11 00:59:49,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50028 states. [2022-02-11 00:59:50,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50028 to 38544. [2022-02-11 00:59:50,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38544 states, 38543 states have (on average 2.3866850011675274) internal successors, (91990), 38543 states have internal predecessors, (91990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:50,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38544 states to 38544 states and 91990 transitions. [2022-02-11 00:59:50,643 INFO L78 Accepts]: Start accepts. Automaton has 38544 states and 91990 transitions. Word has length 55 [2022-02-11 00:59:50,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:59:50,643 INFO L470 AbstractCegarLoop]: Abstraction has 38544 states and 91990 transitions. [2022-02-11 00:59:50,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.265625) internal successors, (145), 63 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:59:50,644 INFO L276 IsEmpty]: Start isEmpty. Operand 38544 states and 91990 transitions. [2022-02-11 00:59:50,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-11 00:59:50,669 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:59:50,669 INFO L515 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:59:50,689 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 00:59:50,880 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,SelfDestructingSolverStorable59 [2022-02-11 00:59:50,880 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:59:50,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:59:50,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1260759283, now seen corresponding path program 59 times [2022-02-11 00:59:50,881 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:59:50,881 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250577231] [2022-02-11 00:59:50,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:59:50,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:59:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:59:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 88 proven. 113 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-02-11 00:59:51,018 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:59:51,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250577231] [2022-02-11 00:59:51,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250577231] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:59:51,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524312765] [2022-02-11 00:59:51,018 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:59:51,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:59:51,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:59:51,020 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 00:59:51,020 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 00:59:51,055 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2022-02-11 00:59:51,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:59:51,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-11 00:59:51,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:59:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 56 proven. 146 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-02-11 00:59:51,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:59:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 64 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:59:52,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524312765] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:59:52,962 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:59:52,962 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 24, 26] total 63 [2022-02-11 00:59:52,962 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915372467] [2022-02-11 00:59:52,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:59:52,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-02-11 00:59:52,962 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:59:52,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-02-11 00:59:52,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=977, Invalid=3055, Unknown=0, NotChecked=0, Total=4032 [2022-02-11 00:59:52,963 INFO L87 Difference]: Start difference. First operand 38544 states and 91990 transitions. Second operand has 64 states, 64 states have (on average 2.28125) internal successors, (146), 63 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:07,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:00:07,007 INFO L93 Difference]: Finished difference Result 100699 states and 233716 transitions. [2022-02-11 01:00:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2022-02-11 01:00:07,008 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.28125) internal successors, (146), 63 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-02-11 01:00:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:00:07,287 INFO L225 Difference]: With dead ends: 100699 [2022-02-11 01:00:07,287 INFO L226 Difference]: Without dead ends: 100360 [2022-02-11 01:00:07,290 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48588 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=28862, Invalid=64468, Unknown=0, NotChecked=0, Total=93330 [2022-02-11 01:00:07,290 INFO L934 BasicCegarLoop]: 33 mSDtfsCounter, 1349 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 2823 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 3221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 2823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:00:07,290 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1349 Valid, 559 Invalid, 3221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 2823 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-11 01:00:07,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100360 states. [2022-02-11 01:00:08,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100360 to 50472. [2022-02-11 01:00:08,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50472 states, 50471 states have (on average 2.3793267420895168) internal successors, (120087), 50471 states have internal predecessors, (120087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:08,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50472 states to 50472 states and 120087 transitions. [2022-02-11 01:00:08,886 INFO L78 Accepts]: Start accepts. Automaton has 50472 states and 120087 transitions. Word has length 55 [2022-02-11 01:00:08,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:00:08,886 INFO L470 AbstractCegarLoop]: Abstraction has 50472 states and 120087 transitions. [2022-02-11 01:00:08,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.28125) internal successors, (146), 63 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:08,887 INFO L276 IsEmpty]: Start isEmpty. Operand 50472 states and 120087 transitions. [2022-02-11 01:00:08,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-11 01:00:08,928 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:00:08,928 INFO L515 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:00:08,944 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 01:00:09,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:00:09,144 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:00:09,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:00:09,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1501623287, now seen corresponding path program 60 times [2022-02-11 01:00:09,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:00:09,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892245177] [2022-02-11 01:00:09,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:00:09,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:00:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:00:09,692 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 72 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:09,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:00:09,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892245177] [2022-02-11 01:00:09,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892245177] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:00:09,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503478352] [2022-02-11 01:00:09,693 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:00:09,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:00:09,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:00:09,694 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 01:00:09,695 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 01:00:09,735 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-02-11 01:00:09,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:00:09,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-11 01:00:09,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:00:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 72 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:10,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:00:11,137 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 81 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:11,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503478352] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:00:11,138 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:00:11,138 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 71 [2022-02-11 01:00:11,138 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777936298] [2022-02-11 01:00:11,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:00:11,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-02-11 01:00:11,138 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:00:11,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-02-11 01:00:11,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=892, Invalid=4220, Unknown=0, NotChecked=0, Total=5112 [2022-02-11 01:00:11,139 INFO L87 Difference]: Start difference. First operand 50472 states and 120087 transitions. Second operand has 72 states, 72 states have (on average 2.125) internal successors, (153), 71 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 01:00:17,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:00:17,550 INFO L93 Difference]: Finished difference Result 64660 states and 150312 transitions. [2022-02-11 01:00:17,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2022-02-11 01:00:17,551 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.125) internal successors, (153), 71 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) Word has length 55 [2022-02-11 01:00:17,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:00:17,678 INFO L225 Difference]: With dead ends: 64660 [2022-02-11 01:00:17,678 INFO L226 Difference]: Without dead ends: 63229 [2022-02-11 01:00:17,681 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28205 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=18014, Invalid=56242, Unknown=0, NotChecked=0, Total=74256 [2022-02-11 01:00:17,681 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 1048 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 2588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:00:17,681 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1048 Valid, 346 Invalid, 2588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-11 01:00:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63229 states. [2022-02-11 01:00:18,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63229 to 49344. [2022-02-11 01:00:18,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49344 states, 49343 states have (on average 2.3726364428591693) internal successors, (117073), 49343 states have internal predecessors, (117073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:18,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49344 states to 49344 states and 117073 transitions. [2022-02-11 01:00:18,750 INFO L78 Accepts]: Start accepts. Automaton has 49344 states and 117073 transitions. Word has length 55 [2022-02-11 01:00:18,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:00:18,750 INFO L470 AbstractCegarLoop]: Abstraction has 49344 states and 117073 transitions. [2022-02-11 01:00:18,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.125) internal successors, (153), 71 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 01:00:18,750 INFO L276 IsEmpty]: Start isEmpty. Operand 49344 states and 117073 transitions. [2022-02-11 01:00:18,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-11 01:00:18,788 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:00:18,788 INFO L515 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:00:18,806 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 01:00:18,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:00:18,997 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:00:18,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:00:18,998 INFO L85 PathProgramCache]: Analyzing trace with hash -723932607, now seen corresponding path program 61 times [2022-02-11 01:00:18,998 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:00:18,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931382448] [2022-02-11 01:00:18,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:00:18,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:00:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:00:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 83 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:19,179 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:00:19,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931382448] [2022-02-11 01:00:19,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931382448] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:00:19,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674715702] [2022-02-11 01:00:19,179 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:00:19,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:00:19,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:00:19,180 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 01:00:19,181 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 01:00:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:00:19,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-11 01:00:19,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:00:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 83 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:20,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:00:20,868 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 92 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:20,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674715702] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:00:20,869 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:00:20,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 26, 26] total 62 [2022-02-11 01:00:20,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87855890] [2022-02-11 01:00:20,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:00:20,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-02-11 01:00:20,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:00:20,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-02-11 01:00:20,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=3043, Unknown=0, NotChecked=0, Total=3906 [2022-02-11 01:00:20,870 INFO L87 Difference]: Start difference. First operand 49344 states and 117073 transitions. Second operand has 63 states, 63 states have (on average 2.3015873015873014) internal successors, (145), 62 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:27,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:00:27,456 INFO L93 Difference]: Finished difference Result 55285 states and 130122 transitions. [2022-02-11 01:00:27,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2022-02-11 01:00:27,456 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.3015873015873014) internal successors, (145), 62 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-02-11 01:00:27,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:00:27,561 INFO L225 Difference]: With dead ends: 55285 [2022-02-11 01:00:27,562 INFO L226 Difference]: Without dead ends: 55281 [2022-02-11 01:00:27,566 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36086 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=22587, Invalid=68315, Unknown=0, NotChecked=0, Total=90902 [2022-02-11 01:00:27,567 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 610 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 1780 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:00:27,567 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [610 Valid, 198 Invalid, 1976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1780 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 01:00:27,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55281 states. [2022-02-11 01:00:28,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55281 to 47161. [2022-02-11 01:00:28,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47161 states, 47160 states have (on average 2.378668363019508) internal successors, (112178), 47160 states have internal predecessors, (112178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47161 states to 47161 states and 112178 transitions. [2022-02-11 01:00:28,529 INFO L78 Accepts]: Start accepts. Automaton has 47161 states and 112178 transitions. Word has length 55 [2022-02-11 01:00:28,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:00:28,529 INFO L470 AbstractCegarLoop]: Abstraction has 47161 states and 112178 transitions. [2022-02-11 01:00:28,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.3015873015873014) internal successors, (145), 62 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:28,529 INFO L276 IsEmpty]: Start isEmpty. Operand 47161 states and 112178 transitions. [2022-02-11 01:00:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-11 01:00:28,570 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:00:28,570 INFO L515 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:00:28,590 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 01:00:28,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:00:28,789 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:00:28,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:00:28,789 INFO L85 PathProgramCache]: Analyzing trace with hash 554537791, now seen corresponding path program 62 times [2022-02-11 01:00:28,789 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:00:28,789 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400091920] [2022-02-11 01:00:28,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:00:28,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:00:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:00:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:29,009 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:00:29,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400091920] [2022-02-11 01:00:29,009 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400091920] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:00:29,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726174192] [2022-02-11 01:00:29,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:00:29,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:00:29,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:00:29,011 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 01:00:29,012 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 01:00:29,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:00:29,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:00:29,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-11 01:00:29,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:00:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:29,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:00:30,530 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 110 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:30,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726174192] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:00:30,530 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:00:30,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 26] total 72 [2022-02-11 01:00:30,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525628000] [2022-02-11 01:00:30,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:00:30,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-02-11 01:00:30,540 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:00:30,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-02-11 01:00:30,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=983, Invalid=4273, Unknown=0, NotChecked=0, Total=5256 [2022-02-11 01:00:30,543 INFO L87 Difference]: Start difference. First operand 47161 states and 112178 transitions. Second operand has 73 states, 73 states have (on average 2.164383561643836) internal successors, (158), 72 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:37,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:00:37,997 INFO L93 Difference]: Finished difference Result 54370 states and 127195 transitions. [2022-02-11 01:00:37,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2022-02-11 01:00:37,997 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.164383561643836) internal successors, (158), 72 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-11 01:00:37,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:00:38,103 INFO L225 Difference]: With dead ends: 54370 [2022-02-11 01:00:38,103 INFO L226 Difference]: Without dead ends: 53353 [2022-02-11 01:00:38,107 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36195 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=22845, Invalid=71097, Unknown=0, NotChecked=0, Total=93942 [2022-02-11 01:00:38,107 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 1076 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 2637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-11 01:00:38,107 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1076 Valid, 357 Invalid, 2637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-11 01:00:38,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53353 states. [2022-02-11 01:00:38,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53353 to 48435. [2022-02-11 01:00:39,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48435 states, 48434 states have (on average 2.3723004500970393) internal successors, (114900), 48434 states have internal predecessors, (114900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:39,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48435 states to 48435 states and 114900 transitions. [2022-02-11 01:00:39,119 INFO L78 Accepts]: Start accepts. Automaton has 48435 states and 114900 transitions. Word has length 57 [2022-02-11 01:00:39,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:00:39,119 INFO L470 AbstractCegarLoop]: Abstraction has 48435 states and 114900 transitions. [2022-02-11 01:00:39,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.164383561643836) internal successors, (158), 72 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:39,119 INFO L276 IsEmpty]: Start isEmpty. Operand 48435 states and 114900 transitions. [2022-02-11 01:00:39,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-11 01:00:39,159 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:00:39,159 INFO L515 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:00:39,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-02-11 01:00:39,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:00:39,373 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:00:39,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:00:39,374 INFO L85 PathProgramCache]: Analyzing trace with hash -880443627, now seen corresponding path program 63 times [2022-02-11 01:00:39,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:00:39,374 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957271715] [2022-02-11 01:00:39,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:00:39,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:00:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:00:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 111 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:39,679 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:00:39,679 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957271715] [2022-02-11 01:00:39,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957271715] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:00:39,679 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539981609] [2022-02-11 01:00:39,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:00:39,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:00:39,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:00:39,681 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 01:00:39,682 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 01:00:39,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2022-02-11 01:00:39,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:00:39,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 62 conjunts are in the unsatisfiable core [2022-02-11 01:00:39,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:00:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 21 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:40,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:00:41,645 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 31 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:41,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539981609] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:00:41,646 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:00:41,646 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 27, 27] total 63 [2022-02-11 01:00:41,646 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255003649] [2022-02-11 01:00:41,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:00:41,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-02-11 01:00:41,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:00:41,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-02-11 01:00:41,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=852, Invalid=3180, Unknown=0, NotChecked=0, Total=4032 [2022-02-11 01:00:41,647 INFO L87 Difference]: Start difference. First operand 48435 states and 114900 transitions. Second operand has 64 states, 64 states have (on average 2.359375) internal successors, (151), 63 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 01:00:50,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:00:50,298 INFO L93 Difference]: Finished difference Result 53965 states and 126890 transitions. [2022-02-11 01:00:50,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 267 states. [2022-02-11 01:00:50,298 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.359375) internal successors, (151), 63 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) Word has length 57 [2022-02-11 01:00:50,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:00:50,424 INFO L225 Difference]: With dead ends: 53965 [2022-02-11 01:00:50,424 INFO L226 Difference]: Without dead ends: 53961 [2022-02-11 01:00:50,429 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43971 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=26436, Invalid=79514, Unknown=0, NotChecked=0, Total=105950 [2022-02-11 01:00:50,429 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 987 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 2832 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 2832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:00:50,429 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 524 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 2832 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-11 01:00:50,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53961 states. [2022-02-11 01:00:51,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53961 to 49427. [2022-02-11 01:00:51,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49427 states, 49426 states have (on average 2.379921498806296) internal successors, (117630), 49426 states have internal predecessors, (117630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:00:51,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49427 states to 49427 states and 117630 transitions. [2022-02-11 01:00:51,527 INFO L78 Accepts]: Start accepts. Automaton has 49427 states and 117630 transitions. Word has length 57 [2022-02-11 01:00:51,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:00:51,528 INFO L470 AbstractCegarLoop]: Abstraction has 49427 states and 117630 transitions. [2022-02-11 01:00:51,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.359375) internal successors, (151), 63 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 01:00:51,528 INFO L276 IsEmpty]: Start isEmpty. Operand 49427 states and 117630 transitions. [2022-02-11 01:00:51,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-11 01:00:51,570 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:00:51,570 INFO L515 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:00:51,585 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 01:00:51,784 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,SelfDestructingSolverStorable64 [2022-02-11 01:00:51,784 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:00:51,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:00:51,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1275848881, now seen corresponding path program 64 times [2022-02-11 01:00:51,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:00:51,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302515541] [2022-02-11 01:00:51,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:00:51,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:00:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:00:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 89 proven. 127 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-11 01:00:51,974 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:00:51,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302515541] [2022-02-11 01:00:51,974 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302515541] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:00:51,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669199284] [2022-02-11 01:00:51,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:00:51,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:00:51,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:00:51,976 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 01:00:51,977 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 01:00:52,014 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:00:52,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:00:52,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-11 01:00:52,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:00:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 56 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:52,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:00:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 72 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:00:53,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669199284] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:00:53,629 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:00:53,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 26, 28] total 71 [2022-02-11 01:00:53,629 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379002013] [2022-02-11 01:00:53,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:00:53,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-02-11 01:00:53,629 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:00:53,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-02-11 01:00:53,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=880, Invalid=4232, Unknown=0, NotChecked=0, Total=5112 [2022-02-11 01:00:53,630 INFO L87 Difference]: Start difference. First operand 49427 states and 117630 transitions. Second operand has 72 states, 72 states have (on average 2.1805555555555554) internal successors, (157), 71 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:03,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:01:03,510 INFO L93 Difference]: Finished difference Result 108881 states and 250108 transitions. [2022-02-11 01:01:03,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 259 states. [2022-02-11 01:01:03,511 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.1805555555555554) internal successors, (157), 71 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-02-11 01:01:03,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:01:03,864 INFO L225 Difference]: With dead ends: 108881 [2022-02-11 01:01:03,865 INFO L226 Difference]: Without dead ends: 107609 [2022-02-11 01:01:03,868 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44491 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=25610, Invalid=80340, Unknown=0, NotChecked=0, Total=105950 [2022-02-11 01:01:03,870 INFO L934 BasicCegarLoop]: 21 mSDtfsCounter, 1375 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 3254 mSolverCounterSat, 551 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 3805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 3254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:01:03,870 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1375 Valid, 453 Invalid, 3805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 3254 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-11 01:01:03,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107609 states. [2022-02-11 01:01:05,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107609 to 50931. [2022-02-11 01:01:05,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50931 states, 50930 states have (on average 2.381170233654035) internal successors, (121273), 50930 states have internal predecessors, (121273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:05,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50931 states to 50931 states and 121273 transitions. [2022-02-11 01:01:05,271 INFO L78 Accepts]: Start accepts. Automaton has 50931 states and 121273 transitions. Word has length 57 [2022-02-11 01:01:05,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:01:05,271 INFO L470 AbstractCegarLoop]: Abstraction has 50931 states and 121273 transitions. [2022-02-11 01:01:05,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.1805555555555554) internal successors, (157), 71 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:05,271 INFO L276 IsEmpty]: Start isEmpty. Operand 50931 states and 121273 transitions. [2022-02-11 01:01:05,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-11 01:01:05,314 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:01:05,314 INFO L515 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:01:05,331 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 01:01:05,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:01:05,537 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:01:05,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:01:05,538 INFO L85 PathProgramCache]: Analyzing trace with hash 38084029, now seen corresponding path program 65 times [2022-02-11 01:01:05,538 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:01:05,538 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731512479] [2022-02-11 01:01:05,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:01:05,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:01:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:01:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 98 proven. 113 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-02-11 01:01:05,729 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:01:05,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731512479] [2022-02-11 01:01:05,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731512479] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:01:05,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435365644] [2022-02-11 01:01:05,730 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:01:05,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:01:05,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:01:05,731 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 01:01:05,732 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 01:01:05,770 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2022-02-11 01:01:05,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:01:05,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 52 conjunts are in the unsatisfiable core [2022-02-11 01:01:05,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:01:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 49 proven. 170 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 01:01:06,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:01:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 49 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:01:07,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435365644] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:01:07,784 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:01:07,784 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26, 27] total 66 [2022-02-11 01:01:07,784 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707353689] [2022-02-11 01:01:07,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:01:07,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-11 01:01:07,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:01:07,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-11 01:01:07,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=794, Invalid=3628, Unknown=0, NotChecked=0, Total=4422 [2022-02-11 01:01:07,785 INFO L87 Difference]: Start difference. First operand 50931 states and 121273 transitions. Second operand has 67 states, 67 states have (on average 2.283582089552239) internal successors, (153), 66 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 01:01:16,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:01:16,294 INFO L93 Difference]: Finished difference Result 144989 states and 332330 transitions. [2022-02-11 01:01:16,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2022-02-11 01:01:16,295 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.283582089552239) internal successors, (153), 66 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) Word has length 57 [2022-02-11 01:01:16,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:01:17,001 INFO L225 Difference]: With dead ends: 144989 [2022-02-11 01:01:17,001 INFO L226 Difference]: Without dead ends: 144515 [2022-02-11 01:01:17,003 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31249 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=18217, Invalid=55495, Unknown=0, NotChecked=0, Total=73712 [2022-02-11 01:01:17,004 INFO L934 BasicCegarLoop]: 26 mSDtfsCounter, 900 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 3460 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 3771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 3460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:01:17,004 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [900 Valid, 697 Invalid, 3771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 3460 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-11 01:01:17,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144515 states. [2022-02-11 01:01:19,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144515 to 55928. [2022-02-11 01:01:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55928 states, 55927 states have (on average 2.371037244980063) internal successors, (132605), 55927 states have internal predecessors, (132605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:19,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55928 states to 55928 states and 132605 transitions. [2022-02-11 01:01:19,195 INFO L78 Accepts]: Start accepts. Automaton has 55928 states and 132605 transitions. Word has length 57 [2022-02-11 01:01:19,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:01:19,195 INFO L470 AbstractCegarLoop]: Abstraction has 55928 states and 132605 transitions. [2022-02-11 01:01:19,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.283582089552239) internal successors, (153), 66 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 01:01:19,195 INFO L276 IsEmpty]: Start isEmpty. Operand 55928 states and 132605 transitions. [2022-02-11 01:01:19,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-11 01:01:19,576 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:01:19,576 INFO L515 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:01:19,599 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 01:01:19,795 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,SelfDestructingSolverStorable66 [2022-02-11 01:01:19,796 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:01:19,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:01:19,796 INFO L85 PathProgramCache]: Analyzing trace with hash -588351939, now seen corresponding path program 66 times [2022-02-11 01:01:19,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:01:19,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786518091] [2022-02-11 01:01:19,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:01:19,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:01:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:01:19,953 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 1 proven. 241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:01:19,953 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:01:19,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786518091] [2022-02-11 01:01:19,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786518091] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:01:19,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567710668] [2022-02-11 01:01:19,954 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:01:19,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:01:19,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:01:19,955 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 01:01:19,955 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 01:01:19,991 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-02-11 01:01:19,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:01:19,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-11 01:01:19,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:01:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 64 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:01:20,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:01:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 100 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:01:20,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567710668] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:01:20,775 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:01:20,775 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 24, 17] total 31 [2022-02-11 01:01:20,775 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774721285] [2022-02-11 01:01:20,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:01:20,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-11 01:01:20,775 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:01:20,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-11 01:01:20,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2022-02-11 01:01:20,776 INFO L87 Difference]: Start difference. First operand 55928 states and 132605 transitions. Second operand has 31 states, 31 states have (on average 3.7419354838709675) internal successors, (116), 31 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:21,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:01:21,840 INFO L93 Difference]: Finished difference Result 75481 states and 180975 transitions. [2022-02-11 01:01:21,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-11 01:01:21,841 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.7419354838709675) internal successors, (116), 31 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-02-11 01:01:21,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:01:22,026 INFO L225 Difference]: With dead ends: 75481 [2022-02-11 01:01:22,026 INFO L226 Difference]: Without dead ends: 75387 [2022-02-11 01:01:22,026 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 108 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=400, Invalid=1492, Unknown=0, NotChecked=0, Total=1892 [2022-02-11 01:01:22,027 INFO L934 BasicCegarLoop]: 123 mSDtfsCounter, 325 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:01:22,027 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 1539 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 01:01:22,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75387 states. [2022-02-11 01:01:23,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75387 to 66341. [2022-02-11 01:01:23,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66341 states, 66340 states have (on average 2.39784443774495) internal successors, (159073), 66340 states have internal predecessors, (159073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:23,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66341 states to 66341 states and 159073 transitions. [2022-02-11 01:01:23,962 INFO L78 Accepts]: Start accepts. Automaton has 66341 states and 159073 transitions. Word has length 59 [2022-02-11 01:01:23,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:01:23,962 INFO L470 AbstractCegarLoop]: Abstraction has 66341 states and 159073 transitions. [2022-02-11 01:01:23,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.7419354838709675) internal successors, (116), 31 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:23,962 INFO L276 IsEmpty]: Start isEmpty. Operand 66341 states and 159073 transitions. [2022-02-11 01:01:24,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-11 01:01:24,039 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:01:24,039 INFO L515 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:01:24,057 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 01:01:24,255 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,SelfDestructingSolverStorable67 [2022-02-11 01:01:24,256 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:01:24,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:01:24,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1987137683, now seen corresponding path program 67 times [2022-02-11 01:01:24,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:01:24,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67354410] [2022-02-11 01:01:24,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:01:24,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:01:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:01:24,685 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:01:24,685 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:01:24,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67354410] [2022-02-11 01:01:24,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67354410] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:01:24,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87954855] [2022-02-11 01:01:24,685 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:01:24,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:01:24,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:01:24,686 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 01:01:24,716 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 01:01:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:01:24,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 64 conjunts are in the unsatisfiable core [2022-02-11 01:01:24,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:01:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:01:25,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:01:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 2 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:01:30,686 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87954855] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:01:30,686 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:01:30,686 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27, 28] total 68 [2022-02-11 01:01:30,686 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302390027] [2022-02-11 01:01:30,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:01:30,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-02-11 01:01:30,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:01:30,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-02-11 01:01:30,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=987, Invalid=3705, Unknown=0, NotChecked=0, Total=4692 [2022-02-11 01:01:30,687 INFO L87 Difference]: Start difference. First operand 66341 states and 159073 transitions. Second operand has 69 states, 69 states have (on average 2.3768115942028984) internal successors, (164), 68 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:01:57,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:01:57,607 INFO L93 Difference]: Finished difference Result 117063 states and 276942 transitions. [2022-02-11 01:01:57,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2022-02-11 01:01:57,610 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.3768115942028984) internal successors, (164), 68 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-02-11 01:01:57,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:01:57,906 INFO L225 Difference]: With dead ends: 117063 [2022-02-11 01:01:57,906 INFO L226 Difference]: Without dead ends: 117021 [2022-02-11 01:01:57,908 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29336 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=14373, Invalid=62079, Unknown=0, NotChecked=0, Total=76452 [2022-02-11 01:01:57,908 INFO L934 BasicCegarLoop]: 63 mSDtfsCounter, 1857 mSDsluCounter, 3915 mSDsCounter, 0 mSdLazyCounter, 12992 mSolverCounterSat, 953 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1857 SdHoareTripleChecker+Valid, 2108 SdHoareTripleChecker+Invalid, 13945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 953 IncrementalHoareTripleChecker+Valid, 12992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:01:57,908 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1857 Valid, 2108 Invalid, 13945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [953 Valid, 12992 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-02-11 01:01:58,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117021 states. [2022-02-11 01:01:59,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117021 to 81290. [2022-02-11 01:02:00,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81290 states, 81289 states have (on average 2.4182361697154597) internal successors, (196576), 81289 states have internal predecessors, (196576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:02:00,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81290 states to 81290 states and 196576 transitions. [2022-02-11 01:02:00,284 INFO L78 Accepts]: Start accepts. Automaton has 81290 states and 196576 transitions. Word has length 59 [2022-02-11 01:02:00,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:02:00,284 INFO L470 AbstractCegarLoop]: Abstraction has 81290 states and 196576 transitions. [2022-02-11 01:02:00,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.3768115942028984) internal successors, (164), 68 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:02:00,285 INFO L276 IsEmpty]: Start isEmpty. Operand 81290 states and 196576 transitions. [2022-02-11 01:02:00,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-11 01:02:00,347 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:02:00,347 INFO L515 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:02:00,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-02-11 01:02:00,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-02-11 01:02:00,564 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:02:00,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:02:00,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1256771773, now seen corresponding path program 68 times [2022-02-11 01:02:00,565 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:02:00,565 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925835351] [2022-02-11 01:02:00,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:02:00,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:02:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:02:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 21 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:02:00,871 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:02:00,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925835351] [2022-02-11 01:02:00,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925835351] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:02:00,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043033765] [2022-02-11 01:02:00,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:02:00,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:02:00,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:02:00,872 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 01:02:00,873 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 01:02:00,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:02:00,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:02:00,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 64 conjunts are in the unsatisfiable core [2022-02-11 01:02:00,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:02:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 21 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:02:02,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:02:07,332 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 31 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:02:07,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043033765] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:02:07,332 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:02:07,332 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 28, 28] total 68 [2022-02-11 01:02:07,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210282139] [2022-02-11 01:02:07,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:02:07,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-02-11 01:02:07,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:02:07,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-02-11 01:02:07,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1098, Invalid=3594, Unknown=0, NotChecked=0, Total=4692 [2022-02-11 01:02:07,334 INFO L87 Difference]: Start difference. First operand 81290 states and 196576 transitions. Second operand has 69 states, 69 states have (on average 2.2753623188405796) internal successors, (157), 68 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:02:27,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:02:27,290 INFO L93 Difference]: Finished difference Result 94724 states and 228861 transitions. [2022-02-11 01:02:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-02-11 01:02:27,290 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.2753623188405796) internal successors, (157), 68 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-02-11 01:02:27,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:02:27,868 INFO L225 Difference]: With dead ends: 94724 [2022-02-11 01:02:27,868 INFO L226 Difference]: Without dead ends: 94704 [2022-02-11 01:02:27,870 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18272 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=11684, Invalid=37822, Unknown=0, NotChecked=0, Total=49506 [2022-02-11 01:02:27,870 INFO L934 BasicCegarLoop]: 39 mSDtfsCounter, 1386 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 8907 mSolverCounterSat, 829 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 9736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 829 IncrementalHoareTripleChecker+Valid, 8907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:02:27,870 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1386 Valid, 1017 Invalid, 9736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [829 Valid, 8907 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-02-11 01:02:27,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94704 states. [2022-02-11 01:02:29,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94704 to 67532. [2022-02-11 01:02:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67532 states, 67531 states have (on average 2.406183826687003) internal successors, (162492), 67531 states have internal predecessors, (162492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:02:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67532 states to 67532 states and 162492 transitions. [2022-02-11 01:02:30,161 INFO L78 Accepts]: Start accepts. Automaton has 67532 states and 162492 transitions. Word has length 59 [2022-02-11 01:02:30,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:02:30,161 INFO L470 AbstractCegarLoop]: Abstraction has 67532 states and 162492 transitions. [2022-02-11 01:02:30,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.2753623188405796) internal successors, (157), 68 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:02:30,162 INFO L276 IsEmpty]: Start isEmpty. Operand 67532 states and 162492 transitions. [2022-02-11 01:02:30,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-11 01:02:30,221 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:02:30,222 INFO L515 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:02:30,239 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 01:02:30,439 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,SelfDestructingSolverStorable69 [2022-02-11 01:02:30,439 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:02:30,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:02:30,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1300336407, now seen corresponding path program 69 times [2022-02-11 01:02:30,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:02:30,440 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153650634] [2022-02-11 01:02:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:02:30,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:02:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:02:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 2 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:02:30,751 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:02:30,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153650634] [2022-02-11 01:02:30,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153650634] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:02:30,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414398091] [2022-02-11 01:02:30,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:02:30,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:02:30,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:02:30,752 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 01:02:30,755 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 01:02:30,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-02-11 01:02:30,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:02:30,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-11 01:02:30,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:02:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 2 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:02:32,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:02:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 6 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:02:36,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414398091] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:02:36,322 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:02:36,322 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27, 28] total 69 [2022-02-11 01:02:36,322 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901034086] [2022-02-11 01:02:36,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:02:36,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-02-11 01:02:36,323 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:02:36,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-02-11 01:02:36,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=926, Invalid=3904, Unknown=0, NotChecked=0, Total=4830 [2022-02-11 01:02:36,324 INFO L87 Difference]: Start difference. First operand 67532 states and 162492 transitions. Second operand has 70 states, 70 states have (on average 2.3142857142857145) internal successors, (162), 69 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:08,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:08,777 INFO L93 Difference]: Finished difference Result 132124 states and 311334 transitions. [2022-02-11 01:03:08,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 277 states. [2022-02-11 01:03:08,777 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.3142857142857145) internal successors, (162), 69 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-02-11 01:03:08,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:09,120 INFO L225 Difference]: With dead ends: 132124 [2022-02-11 01:03:09,120 INFO L226 Difference]: Without dead ends: 132043 [2022-02-11 01:03:09,123 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47946 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=22207, Invalid=94415, Unknown=0, NotChecked=0, Total=116622 [2022-02-11 01:03:09,124 INFO L934 BasicCegarLoop]: 51 mSDtfsCounter, 1981 mSDsluCounter, 2210 mSDsCounter, 0 mSdLazyCounter, 10770 mSolverCounterSat, 1053 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1981 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 11823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1053 IncrementalHoareTripleChecker+Valid, 10770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:09,124 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1981 Valid, 1101 Invalid, 11823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1053 Valid, 10770 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-02-11 01:03:09,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132043 states. [2022-02-11 01:03:11,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132043 to 82340. [2022-02-11 01:03:11,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82340 states, 82339 states have (on average 2.4267843913576796) internal successors, (199819), 82339 states have internal predecessors, (199819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:11,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82340 states to 82340 states and 199819 transitions. [2022-02-11 01:03:11,736 INFO L78 Accepts]: Start accepts. Automaton has 82340 states and 199819 transitions. Word has length 59 [2022-02-11 01:03:11,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:11,737 INFO L470 AbstractCegarLoop]: Abstraction has 82340 states and 199819 transitions. [2022-02-11 01:03:11,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.3142857142857145) internal successors, (162), 69 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:11,738 INFO L276 IsEmpty]: Start isEmpty. Operand 82340 states and 199819 transitions. [2022-02-11 01:03:11,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-11 01:03:11,799 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:11,799 INFO L515 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:11,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-02-11 01:03:12,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:12,015 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:03:12,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:12,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1468394253, now seen corresponding path program 70 times [2022-02-11 01:03:12,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:12,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164863074] [2022-02-11 01:03:12,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:12,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:12,212 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 81 proven. 152 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-02-11 01:03:12,212 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:12,212 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164863074] [2022-02-11 01:03:12,212 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164863074] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:12,212 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330264655] [2022-02-11 01:03:12,212 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:03:12,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:12,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:12,221 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 01:03:12,230 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 01:03:12,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:03:12,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:03:12,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 48 conjunts are in the unsatisfiable core [2022-02-11 01:03:12,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:13,101 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 56 proven. 176 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-11 01:03:13,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:15,304 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 72 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:15,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330264655] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:15,304 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:15,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24, 29] total 66 [2022-02-11 01:03:15,304 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551406965] [2022-02-11 01:03:15,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:15,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-02-11 01:03:15,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:15,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-02-11 01:03:15,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=950, Invalid=3472, Unknown=0, NotChecked=0, Total=4422 [2022-02-11 01:03:15,305 INFO L87 Difference]: Start difference. First operand 82340 states and 199819 transitions. Second operand has 67 states, 67 states have (on average 2.328358208955224) internal successors, (156), 66 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:36,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:36,515 INFO L93 Difference]: Finished difference Result 215111 states and 512154 transitions. [2022-02-11 01:03:36,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 279 states. [2022-02-11 01:03:36,516 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.328358208955224) internal successors, (156), 66 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-02-11 01:03:36,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:37,225 INFO L225 Difference]: With dead ends: 215111 [2022-02-11 01:03:37,225 INFO L226 Difference]: Without dead ends: 214588 [2022-02-11 01:03:37,229 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57235 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=31204, Invalid=84736, Unknown=0, NotChecked=0, Total=115940 [2022-02-11 01:03:37,229 INFO L934 BasicCegarLoop]: 34 mSDtfsCounter, 1888 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 3374 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 3900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 3374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:37,229 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1888 Valid, 746 Invalid, 3900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 3374 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-11 01:03:37,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214588 states. [2022-02-11 01:03:40,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214588 to 129224. [2022-02-11 01:03:41,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129224 states, 129223 states have (on average 2.422873637046037) internal successors, (313091), 129223 states have internal predecessors, (313091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:41,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129224 states to 129224 states and 313091 transitions. [2022-02-11 01:03:41,647 INFO L78 Accepts]: Start accepts. Automaton has 129224 states and 313091 transitions. Word has length 59 [2022-02-11 01:03:41,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:41,647 INFO L470 AbstractCegarLoop]: Abstraction has 129224 states and 313091 transitions. [2022-02-11 01:03:41,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.328358208955224) internal successors, (156), 66 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:41,647 INFO L276 IsEmpty]: Start isEmpty. Operand 129224 states and 313091 transitions. [2022-02-11 01:03:41,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-11 01:03:41,757 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:41,757 INFO L515 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:41,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-02-11 01:03:41,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:41,976 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:03:41,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:03:41,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1511239347, now seen corresponding path program 71 times [2022-02-11 01:03:41,977 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:03:41,977 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750208666] [2022-02-11 01:03:41,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:03:41,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:03:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:03:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 56 proven. 182 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-11 01:03:42,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:03:42,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750208666] [2022-02-11 01:03:42,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750208666] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:03:42,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509571322] [2022-02-11 01:03:42,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:03:42,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:03:42,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:03:42,389 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 01:03:42,390 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 01:03:42,424 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-02-11 01:03:42,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:03:42,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-11 01:03:42,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:03:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 56 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:43,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:03:44,873 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 64 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:03:44,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509571322] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:03:44,874 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:03:44,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28, 28] total 75 [2022-02-11 01:03:44,874 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108996689] [2022-02-11 01:03:44,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:03:44,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-02-11 01:03:44,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:03:44,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-02-11 01:03:44,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=897, Invalid=4803, Unknown=0, NotChecked=0, Total=5700 [2022-02-11 01:03:44,875 INFO L87 Difference]: Start difference. First operand 129224 states and 313091 transitions. Second operand has 76 states, 76 states have (on average 2.1315789473684212) internal successors, (162), 75 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:54,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:03:54,308 INFO L93 Difference]: Finished difference Result 233874 states and 555428 transitions. [2022-02-11 01:03:54,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2022-02-11 01:03:54,308 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.1315789473684212) internal successors, (162), 75 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-02-11 01:03:54,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:03:55,540 INFO L225 Difference]: With dead ends: 233874 [2022-02-11 01:03:55,540 INFO L226 Difference]: Without dead ends: 232080 [2022-02-11 01:03:55,544 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40179 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=21412, Invalid=79394, Unknown=0, NotChecked=0, Total=100806 [2022-02-11 01:03:55,544 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 1186 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 3513 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 3876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 3513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:03:55,544 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1186 Valid, 430 Invalid, 3876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 3513 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-11 01:03:55,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232080 states. [2022-02-11 01:03:58,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232080 to 119339. [2022-02-11 01:03:59,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119339 states, 119338 states have (on average 2.4176540582211867) internal successors, (288518), 119338 states have internal predecessors, (288518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:59,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119339 states to 119339 states and 288518 transitions. [2022-02-11 01:03:59,815 INFO L78 Accepts]: Start accepts. Automaton has 119339 states and 288518 transitions. Word has length 59 [2022-02-11 01:03:59,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:03:59,815 INFO L470 AbstractCegarLoop]: Abstraction has 119339 states and 288518 transitions. [2022-02-11 01:03:59,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.1315789473684212) internal successors, (162), 75 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:03:59,815 INFO L276 IsEmpty]: Start isEmpty. Operand 119339 states and 288518 transitions. [2022-02-11 01:03:59,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-11 01:03:59,904 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:03:59,904 INFO L515 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:03:59,921 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 01:04:00,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:04:00,120 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:04:00,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:04:00,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1565601971, now seen corresponding path program 72 times [2022-02-11 01:04:00,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:04:00,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005356523] [2022-02-11 01:04:00,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:04:00,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:04:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:04:00,452 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 72 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:00,452 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:04:00,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005356523] [2022-02-11 01:04:00,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005356523] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:04:00,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682305703] [2022-02-11 01:04:00,452 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:04:00,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:04:00,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:04:00,464 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 01:04:00,465 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 01:04:00,500 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-02-11 01:04:00,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:04:00,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 51 conjunts are in the unsatisfiable core [2022-02-11 01:04:00,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:04:01,655 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 72 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:01,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:04:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 81 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:02,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682305703] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:04:02,715 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:04:02,716 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 77 [2022-02-11 01:04:02,716 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576901014] [2022-02-11 01:04:02,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:04:02,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-02-11 01:04:02,716 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:04:02,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-02-11 01:04:02,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=968, Invalid=5038, Unknown=0, NotChecked=0, Total=6006 [2022-02-11 01:04:02,717 INFO L87 Difference]: Start difference. First operand 119339 states and 288518 transitions. Second operand has 78 states, 78 states have (on average 2.1153846153846154) internal successors, (165), 77 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:11,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:04:11,586 INFO L93 Difference]: Finished difference Result 158204 states and 376205 transitions. [2022-02-11 01:04:11,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2022-02-11 01:04:11,586 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.1153846153846154) internal successors, (165), 77 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-02-11 01:04:11,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:04:12,047 INFO L225 Difference]: With dead ends: 158204 [2022-02-11 01:04:12,047 INFO L226 Difference]: Without dead ends: 156650 [2022-02-11 01:04:12,050 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43255 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=23503, Invalid=85067, Unknown=0, NotChecked=0, Total=108570 [2022-02-11 01:04:12,052 INFO L934 BasicCegarLoop]: 16 mSDtfsCounter, 1118 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 3540 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 3853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 3540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-11 01:04:12,052 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1118 Valid, 462 Invalid, 3853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 3540 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-11 01:04:12,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156650 states. [2022-02-11 01:04:14,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156650 to 109578. [2022-02-11 01:04:14,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109578 states, 109577 states have (on average 2.4051306387289304) internal successors, (263547), 109577 states have internal predecessors, (263547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:15,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109578 states to 109578 states and 263547 transitions. [2022-02-11 01:04:15,320 INFO L78 Accepts]: Start accepts. Automaton has 109578 states and 263547 transitions. Word has length 59 [2022-02-11 01:04:15,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:04:15,320 INFO L470 AbstractCegarLoop]: Abstraction has 109578 states and 263547 transitions. [2022-02-11 01:04:15,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.1153846153846154) internal successors, (165), 77 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:15,321 INFO L276 IsEmpty]: Start isEmpty. Operand 109578 states and 263547 transitions. [2022-02-11 01:04:15,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-11 01:04:15,400 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:04:15,400 INFO L515 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:04:15,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-02-11 01:04:15,616 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,SelfDestructingSolverStorable73 [2022-02-11 01:04:15,616 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:04:15,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:04:15,618 INFO L85 PathProgramCache]: Analyzing trace with hash 218506875, now seen corresponding path program 73 times [2022-02-11 01:04:15,618 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:04:15,618 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653805019] [2022-02-11 01:04:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:04:15,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:04:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:04:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:15,973 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:04:15,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653805019] [2022-02-11 01:04:15,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653805019] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:04:15,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077671912] [2022-02-11 01:04:15,973 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:04:15,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:04:15,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:04:15,974 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 01:04:15,975 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 01:04:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:04:16,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 50 conjunts are in the unsatisfiable core [2022-02-11 01:04:16,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:04:16,840 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:16,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:04:18,017 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 132 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:18,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077671912] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:04:18,017 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:04:18,017 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29, 28] total 78 [2022-02-11 01:04:18,017 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109808985] [2022-02-11 01:04:18,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:04:18,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-02-11 01:04:18,017 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:04:18,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-02-11 01:04:18,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1143, Invalid=5019, Unknown=0, NotChecked=0, Total=6162 [2022-02-11 01:04:18,018 INFO L87 Difference]: Start difference. First operand 109578 states and 263547 transitions. Second operand has 79 states, 79 states have (on average 2.151898734177215) internal successors, (170), 78 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:27,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:04:27,574 INFO L93 Difference]: Finished difference Result 115472 states and 275268 transitions. [2022-02-11 01:04:27,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 278 states. [2022-02-11 01:04:27,575 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.151898734177215) internal successors, (170), 78 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-02-11 01:04:27,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:04:27,881 INFO L225 Difference]: With dead ends: 115472 [2022-02-11 01:04:27,881 INFO L226 Difference]: Without dead ends: 114281 [2022-02-11 01:04:27,885 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 350 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48991 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=30076, Invalid=93476, Unknown=0, NotChecked=0, Total=123552 [2022-02-11 01:04:27,886 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 1278 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 01:04:27,886 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1278 Valid, 376 Invalid, 2749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-11 01:04:28,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114281 states. [2022-02-11 01:04:30,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114281 to 109425. [2022-02-11 01:04:30,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109425 states, 109424 states have (on average 2.404646147097529) internal successors, (263126), 109424 states have internal predecessors, (263126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:30,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109425 states to 109425 states and 263126 transitions. [2022-02-11 01:04:30,578 INFO L78 Accepts]: Start accepts. Automaton has 109425 states and 263126 transitions. Word has length 61 [2022-02-11 01:04:30,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:04:30,578 INFO L470 AbstractCegarLoop]: Abstraction has 109425 states and 263126 transitions. [2022-02-11 01:04:30,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.151898734177215) internal successors, (170), 78 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:30,578 INFO L276 IsEmpty]: Start isEmpty. Operand 109425 states and 263126 transitions. [2022-02-11 01:04:30,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-11 01:04:30,680 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:04:30,680 INFO L515 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:04:30,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-02-11 01:04:30,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:04:30,891 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:04:30,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:04:30,891 INFO L85 PathProgramCache]: Analyzing trace with hash 970555797, now seen corresponding path program 74 times [2022-02-11 01:04:30,891 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:04:30,891 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878947382] [2022-02-11 01:04:30,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:04:30,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:04:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:04:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 133 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:31,047 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:04:31,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878947382] [2022-02-11 01:04:31,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878947382] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:04:31,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080002022] [2022-02-11 01:04:31,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:04:31,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:04:31,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:04:31,049 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 01:04:31,050 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 01:04:31,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:04:31,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:04:31,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-11 01:04:31,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:04:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 133 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:32,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:04:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:33,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080002022] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:04:33,250 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:04:33,250 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 28, 27] total 65 [2022-02-11 01:04:33,250 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830722875] [2022-02-11 01:04:33,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:04:33,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-11 01:04:33,250 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:04:33,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-11 01:04:33,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1025, Invalid=3265, Unknown=0, NotChecked=0, Total=4290 [2022-02-11 01:04:33,251 INFO L87 Difference]: Start difference. First operand 109425 states and 263126 transitions. Second operand has 66 states, 66 states have (on average 2.4545454545454546) internal successors, (162), 65 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:39,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:04:39,245 INFO L93 Difference]: Finished difference Result 111886 states and 268149 transitions. [2022-02-11 01:04:39,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2022-02-11 01:04:39,246 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.4545454545454546) internal successors, (162), 65 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-02-11 01:04:39,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:04:39,595 INFO L225 Difference]: With dead ends: 111886 [2022-02-11 01:04:39,595 INFO L226 Difference]: Without dead ends: 111882 [2022-02-11 01:04:39,598 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25401 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=17508, Invalid=49832, Unknown=0, NotChecked=0, Total=67340 [2022-02-11 01:04:39,598 INFO L934 BasicCegarLoop]: 11 mSDtfsCounter, 523 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 01:04:39,599 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 192 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 01:04:39,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111882 states. [2022-02-11 01:04:42,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111882 to 109293. [2022-02-11 01:04:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109293 states, 109292 states have (on average 2.405107418658273) internal successors, (262859), 109292 states have internal predecessors, (262859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:42,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109293 states to 109293 states and 262859 transitions. [2022-02-11 01:04:42,644 INFO L78 Accepts]: Start accepts. Automaton has 109293 states and 262859 transitions. Word has length 61 [2022-02-11 01:04:42,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:04:42,644 INFO L470 AbstractCegarLoop]: Abstraction has 109293 states and 262859 transitions. [2022-02-11 01:04:42,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.4545454545454546) internal successors, (162), 65 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:04:42,645 INFO L276 IsEmpty]: Start isEmpty. Operand 109293 states and 262859 transitions. [2022-02-11 01:04:43,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-11 01:04:43,122 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:04:43,122 INFO L515 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:04:43,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-02-11 01:04:43,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:04:43,338 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:04:43,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:04:43,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1163558027, now seen corresponding path program 75 times [2022-02-11 01:04:43,338 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:04:43,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729099667] [2022-02-11 01:04:43,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:04:43,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:04:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:04:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 99 proven. 155 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-02-11 01:04:43,569 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:04:43,569 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729099667] [2022-02-11 01:04:43,569 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729099667] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:04:43,569 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777622895] [2022-02-11 01:04:43,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:04:43,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:04:43,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:04:43,570 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 01:04:43,571 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 01:04:43,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-02-11 01:04:43,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:04:43,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 50 conjunts are in the unsatisfiable core [2022-02-11 01:04:43,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:04:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 56 proven. 207 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-11 01:04:44,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:04:46,304 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 72 proven. 193 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:04:46,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777622895] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:04:46,304 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:04:46,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27, 30] total 73 [2022-02-11 01:04:46,304 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893473474] [2022-02-11 01:04:46,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:04:46,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-02-11 01:04:46,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:04:46,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-02-11 01:04:46,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=971, Invalid=4431, Unknown=0, NotChecked=0, Total=5402 [2022-02-11 01:04:46,306 INFO L87 Difference]: Start difference. First operand 109293 states and 262859 transitions. Second operand has 74 states, 74 states have (on average 2.2162162162162162) internal successors, (164), 73 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:05:01,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:05:01,506 INFO L93 Difference]: Finished difference Result 249967 states and 589663 transitions. [2022-02-11 01:05:01,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2022-02-11 01:05:01,506 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.2162162162162162) internal successors, (164), 73 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-02-11 01:05:01,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:05:02,703 INFO L225 Difference]: With dead ends: 249967 [2022-02-11 01:05:02,704 INFO L226 Difference]: Without dead ends: 249514 [2022-02-11 01:05:02,707 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42883 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=23732, Invalid=75808, Unknown=0, NotChecked=0, Total=99540 [2022-02-11 01:05:02,707 INFO L934 BasicCegarLoop]: 20 mSDtfsCounter, 1137 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 3928 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 4393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 3928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:05:02,707 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 491 Invalid, 4393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 3928 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-11 01:05:02,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249514 states. [2022-02-11 01:05:06,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249514 to 110936. [2022-02-11 01:05:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110936 states, 110935 states have (on average 2.4123856312254923) internal successors, (267618), 110935 states have internal predecessors, (267618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:05:07,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110936 states to 110936 states and 267618 transitions. [2022-02-11 01:05:07,221 INFO L78 Accepts]: Start accepts. Automaton has 110936 states and 267618 transitions. Word has length 61 [2022-02-11 01:05:07,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:05:07,221 INFO L470 AbstractCegarLoop]: Abstraction has 110936 states and 267618 transitions. [2022-02-11 01:05:07,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.2162162162162162) internal successors, (164), 73 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:05:07,221 INFO L276 IsEmpty]: Start isEmpty. Operand 110936 states and 267618 transitions. [2022-02-11 01:05:07,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-11 01:05:07,335 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:05:07,335 INFO L515 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:05:07,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-02-11 01:05:07,552 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,SelfDestructingSolverStorable76 [2022-02-11 01:05:07,553 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:05:07,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:05:07,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1391515015, now seen corresponding path program 76 times [2022-02-11 01:05:07,553 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:05:07,553 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774587040] [2022-02-11 01:05:07,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:05:07,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:05:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:05:07,736 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 1 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:05:07,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:05:07,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774587040] [2022-02-11 01:05:07,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774587040] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:05:07,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553718660] [2022-02-11 01:05:07,737 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:05:07,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:05:07,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:05:07,738 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 01:05:07,738 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 01:05:08,084 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:05:08,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:05:08,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 51 conjunts are in the unsatisfiable core [2022-02-11 01:05:08,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:05:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:05:08,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:05:09,204 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 144 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:05:09,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553718660] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:05:09,205 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:05:09,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 27] total 39 [2022-02-11 01:05:09,205 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083315155] [2022-02-11 01:05:09,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:05:09,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-11 01:05:09,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:05:09,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-11 01:05:09,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=1107, Unknown=0, NotChecked=0, Total=1482 [2022-02-11 01:05:09,206 INFO L87 Difference]: Start difference. First operand 110936 states and 267618 transitions. Second operand has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 39 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:05:10,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:05:10,268 INFO L93 Difference]: Finished difference Result 130966 states and 318689 transitions. [2022-02-11 01:05:10,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-11 01:05:10,268 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 39 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-02-11 01:05:10,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:05:10,640 INFO L225 Difference]: With dead ends: 130966 [2022-02-11 01:05:10,640 INFO L226 Difference]: Without dead ends: 130879 [2022-02-11 01:05:10,640 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 110 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=375, Invalid=1107, Unknown=0, NotChecked=0, Total=1482 [2022-02-11 01:05:10,641 INFO L934 BasicCegarLoop]: 95 mSDtfsCounter, 667 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-11 01:05:10,641 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 1378 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-11 01:05:10,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130879 states. [2022-02-11 01:05:13,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130879 to 130255. [2022-02-11 01:05:13,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130255 states, 130254 states have (on average 2.4369232422804674) internal successors, (317419), 130254 states have internal predecessors, (317419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:05:14,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130255 states to 130255 states and 317419 transitions. [2022-02-11 01:05:14,491 INFO L78 Accepts]: Start accepts. Automaton has 130255 states and 317419 transitions. Word has length 63 [2022-02-11 01:05:14,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:05:14,491 INFO L470 AbstractCegarLoop]: Abstraction has 130255 states and 317419 transitions. [2022-02-11 01:05:14,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 39 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:05:14,491 INFO L276 IsEmpty]: Start isEmpty. Operand 130255 states and 317419 transitions. [2022-02-11 01:05:14,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-11 01:05:14,774 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:05:14,774 INFO L515 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:05:14,790 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 01:05:14,987 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,SelfDestructingSolverStorable77 [2022-02-11 01:05:14,987 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:05:14,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:05:14,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1351434417, now seen corresponding path program 77 times [2022-02-11 01:05:14,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:05:14,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025033727] [2022-02-11 01:05:14,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:05:14,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:05:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:05:15,479 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:05:15,479 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:05:15,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025033727] [2022-02-11 01:05:15,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025033727] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:05:15,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310933025] [2022-02-11 01:05:15,480 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 01:05:15,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:05:15,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:05:15,481 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 01:05:15,482 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 01:05:15,523 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-02-11 01:05:15,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:05:15,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 73 conjunts are in the unsatisfiable core [2022-02-11 01:05:15,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:05:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:05:16,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:05:22,979 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 1 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:05:22,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310933025] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:05:22,980 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:05:22,980 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 30, 30] total 74 [2022-02-11 01:05:22,980 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790080738] [2022-02-11 01:05:22,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:05:22,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-02-11 01:05:22,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:05:22,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-02-11 01:05:22,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1158, Invalid=4392, Unknown=0, NotChecked=0, Total=5550 [2022-02-11 01:05:22,981 INFO L87 Difference]: Start difference. First operand 130255 states and 317419 transitions. Second operand has 75 states, 75 states have (on average 2.36) internal successors, (177), 74 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:06:06,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:06:06,878 INFO L93 Difference]: Finished difference Result 225731 states and 540537 transitions. [2022-02-11 01:06:06,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2022-02-11 01:06:06,879 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.36) internal successors, (177), 74 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-02-11 01:06:06,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:06:07,756 INFO L225 Difference]: With dead ends: 225731 [2022-02-11 01:06:07,756 INFO L226 Difference]: Without dead ends: 225686 [2022-02-11 01:06:07,759 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34219 ImplicationChecksByTransitivity, 39.0s TimeCoverageRelationStatistics Valid=16938, Invalid=70974, Unknown=0, NotChecked=0, Total=87912 [2022-02-11 01:06:07,760 INFO L934 BasicCegarLoop]: 69 mSDtfsCounter, 2250 mSDsluCounter, 3693 mSDsCounter, 0 mSdLazyCounter, 13273 mSolverCounterSat, 1010 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2250 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 14283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1010 IncrementalHoareTripleChecker+Valid, 13273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:06:07,760 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2250 Valid, 1952 Invalid, 14283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1010 Valid, 13273 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-02-11 01:06:08,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225686 states. [2022-02-11 01:06:12,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225686 to 162327. [2022-02-11 01:06:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162327 states, 162326 states have (on average 2.4435087416680012) internal successors, (396645), 162326 states have internal predecessors, (396645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:06:14,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162327 states to 162327 states and 396645 transitions. [2022-02-11 01:06:14,411 INFO L78 Accepts]: Start accepts. Automaton has 162327 states and 396645 transitions. Word has length 63 [2022-02-11 01:06:14,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:06:14,411 INFO L470 AbstractCegarLoop]: Abstraction has 162327 states and 396645 transitions. [2022-02-11 01:06:14,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.36) internal successors, (177), 74 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:06:14,412 INFO L276 IsEmpty]: Start isEmpty. Operand 162327 states and 396645 transitions. [2022-02-11 01:06:14,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-11 01:06:14,534 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:06:14,534 INFO L515 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:06:14,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-02-11 01:06:14,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:06:14,747 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:06:14,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:06:14,748 INFO L85 PathProgramCache]: Analyzing trace with hash -2081800327, now seen corresponding path program 78 times [2022-02-11 01:06:14,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:06:14,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45429648] [2022-02-11 01:06:14,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:06:14,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:06:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:06:15,295 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 23 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:06:15,296 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:06:15,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45429648] [2022-02-11 01:06:15,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45429648] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:06:15,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281885927] [2022-02-11 01:06:15,296 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 01:06:15,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:06:15,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:06:15,297 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:06:15,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-11 01:06:15,345 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-02-11 01:06:15,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:06:15,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 70 conjunts are in the unsatisfiable core [2022-02-11 01:06:15,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:06:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 23 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:06:16,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:06:23,870 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 34 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:06:23,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281885927] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:06:23,870 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:06:23,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 30, 30] total 73 [2022-02-11 01:06:23,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929127066] [2022-02-11 01:06:23,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:06:23,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-02-11 01:06:23,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:06:23,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-02-11 01:06:23,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1270, Invalid=4132, Unknown=0, NotChecked=0, Total=5402 [2022-02-11 01:06:23,871 INFO L87 Difference]: Start difference. First operand 162327 states and 396645 transitions. Second operand has 74 states, 74 states have (on average 2.2837837837837838) internal successors, (169), 73 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:06:53,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:06:53,394 INFO L93 Difference]: Finished difference Result 184500 states and 451193 transitions. [2022-02-11 01:06:53,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2022-02-11 01:06:53,394 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.2837837837837838) internal successors, (169), 73 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-02-11 01:06:53,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:06:54,100 INFO L225 Difference]: With dead ends: 184500 [2022-02-11 01:06:54,100 INFO L226 Difference]: Without dead ends: 184476 [2022-02-11 01:06:54,102 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21664 ImplicationChecksByTransitivity, 26.4s TimeCoverageRelationStatistics Valid=13703, Invalid=44619, Unknown=0, NotChecked=0, Total=58322 [2022-02-11 01:06:54,102 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 1746 mSDsluCounter, 2518 mSDsCounter, 0 mSdLazyCounter, 11370 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1746 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 12228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 11370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-02-11 01:06:54,102 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1746 Valid, 1259 Invalid, 12228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 11370 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-02-11 01:06:54,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184476 states. [2022-02-11 01:06:57,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184476 to 140233. [2022-02-11 01:06:57,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140233 states, 140232 states have (on average 2.4315776712875805) internal successors, (340985), 140232 states have internal predecessors, (340985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:06:58,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140233 states to 140233 states and 340985 transitions. [2022-02-11 01:06:58,032 INFO L78 Accepts]: Start accepts. Automaton has 140233 states and 340985 transitions. Word has length 63 [2022-02-11 01:06:58,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:06:58,033 INFO L470 AbstractCegarLoop]: Abstraction has 140233 states and 340985 transitions. [2022-02-11 01:06:58,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.2837837837837838) internal successors, (169), 73 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:06:58,033 INFO L276 IsEmpty]: Start isEmpty. Operand 140233 states and 340985 transitions. [2022-02-11 01:06:58,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-11 01:06:58,131 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:06:58,131 INFO L515 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:06:58,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-02-11 01:06:58,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:06:58,347 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:06:58,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:06:58,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2077265363, now seen corresponding path program 79 times [2022-02-11 01:06:58,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:06:58,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523783896] [2022-02-11 01:06:58,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:06:58,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:06:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:06:58,710 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 2 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:06:58,710 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:06:58,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523783896] [2022-02-11 01:06:58,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523783896] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:06:58,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359277609] [2022-02-11 01:06:58,711 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 01:06:58,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:06:58,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:06:58,712 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:06:58,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-11 01:06:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:06:58,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 70 conjunts are in the unsatisfiable core [2022-02-11 01:06:58,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:06:59,560 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 2 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:06:59,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:07:04,530 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 6 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:07:04,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359277609] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:07:04,530 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:07:04,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 29, 31] total 76 [2022-02-11 01:07:04,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626712750] [2022-02-11 01:07:04,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:07:04,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-02-11 01:07:04,531 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:07:04,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-02-11 01:07:04,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1110, Invalid=4742, Unknown=0, NotChecked=0, Total=5852 [2022-02-11 01:07:04,531 INFO L87 Difference]: Start difference. First operand 140233 states and 340985 transitions. Second operand has 77 states, 77 states have (on average 2.311688311688312) internal successors, (178), 76 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:07:42,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:07:42,392 INFO L93 Difference]: Finished difference Result 248764 states and 592887 transitions. [2022-02-11 01:07:42,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 304 states. [2022-02-11 01:07:42,392 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.311688311688312) internal successors, (178), 76 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-02-11 01:07:42,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:07:43,404 INFO L225 Difference]: With dead ends: 248764 [2022-02-11 01:07:43,404 INFO L226 Difference]: Without dead ends: 248683 [2022-02-11 01:07:43,408 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 374 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57436 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=26282, Invalid=114718, Unknown=0, NotChecked=0, Total=141000 [2022-02-11 01:07:43,409 INFO L934 BasicCegarLoop]: 52 mSDtfsCounter, 2449 mSDsluCounter, 2509 mSDsCounter, 0 mSdLazyCounter, 12381 mSolverCounterSat, 1141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2449 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 13522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1141 IncrementalHoareTripleChecker+Valid, 12381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-02-11 01:07:43,409 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2449 Valid, 1233 Invalid, 13522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1141 Valid, 12381 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-02-11 01:07:43,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248683 states. [2022-02-11 01:07:47,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248683 to 149498. [2022-02-11 01:07:47,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149498 states, 149497 states have (on average 2.433353177655739) internal successors, (363779), 149497 states have internal predecessors, (363779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:07:48,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149498 states to 149498 states and 363779 transitions. [2022-02-11 01:07:48,421 INFO L78 Accepts]: Start accepts. Automaton has 149498 states and 363779 transitions. Word has length 63 [2022-02-11 01:07:48,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:07:48,421 INFO L470 AbstractCegarLoop]: Abstraction has 149498 states and 363779 transitions. [2022-02-11 01:07:48,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.311688311688312) internal successors, (178), 76 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:07:48,421 INFO L276 IsEmpty]: Start isEmpty. Operand 149498 states and 363779 transitions. [2022-02-11 01:07:48,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-11 01:07:48,542 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:07:48,542 INFO L515 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:07:48,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-11 01:07:48,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:07:48,748 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:07:48,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:07:48,749 INFO L85 PathProgramCache]: Analyzing trace with hash 196528471, now seen corresponding path program 80 times [2022-02-11 01:07:48,749 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:07:48,749 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179395328] [2022-02-11 01:07:48,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:07:48,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:07:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:07:49,541 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 6 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:07:49,541 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:07:49,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179395328] [2022-02-11 01:07:49,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179395328] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:07:49,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933111193] [2022-02-11 01:07:49,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 01:07:49,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:07:49,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:07:49,542 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:07:49,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-11 01:07:49,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 01:07:49,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:07:49,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 64 conjunts are in the unsatisfiable core [2022-02-11 01:07:49,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:07:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 6 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:07:50,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:07:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 12 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:07:55,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933111193] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:07:55,178 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:07:55,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 29, 30] total 75 [2022-02-11 01:07:55,178 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112571251] [2022-02-11 01:07:55,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:07:55,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-02-11 01:07:55,179 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:07:55,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-02-11 01:07:55,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1027, Invalid=4673, Unknown=0, NotChecked=0, Total=5700 [2022-02-11 01:07:55,179 INFO L87 Difference]: Start difference. First operand 149498 states and 363779 transitions. Second operand has 76 states, 76 states have (on average 2.289473684210526) internal successors, (174), 75 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:08:33,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:08:33,542 INFO L93 Difference]: Finished difference Result 303809 states and 724881 transitions. [2022-02-11 01:08:33,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 366 states. [2022-02-11 01:08:33,542 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.289473684210526) internal successors, (174), 75 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-02-11 01:08:33,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:08:34,525 INFO L225 Difference]: With dead ends: 303809 [2022-02-11 01:08:34,526 INFO L226 Difference]: Without dead ends: 303659 [2022-02-11 01:08:34,532 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 435 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81751 ImplicationChecksByTransitivity, 33.3s TimeCoverageRelationStatistics Valid=35722, Invalid=154810, Unknown=0, NotChecked=0, Total=190532 [2022-02-11 01:08:34,532 INFO L934 BasicCegarLoop]: 47 mSDtfsCounter, 2572 mSDsluCounter, 2989 mSDsCounter, 0 mSdLazyCounter, 15097 mSolverCounterSat, 1406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2572 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 16503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1406 IncrementalHoareTripleChecker+Valid, 15097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-02-11 01:08:34,532 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [2572 Valid, 1475 Invalid, 16503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1406 Valid, 15097 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-02-11 01:08:35,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303659 states. [2022-02-11 01:08:40,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303659 to 182977. [2022-02-11 01:08:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182977 states, 182976 states have (on average 2.451594744665967) internal successors, (448583), 182976 states have internal predecessors, (448583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:08:41,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182977 states to 182977 states and 448583 transitions. [2022-02-11 01:08:41,223 INFO L78 Accepts]: Start accepts. Automaton has 182977 states and 448583 transitions. Word has length 63 [2022-02-11 01:08:41,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:08:41,223 INFO L470 AbstractCegarLoop]: Abstraction has 182977 states and 448583 transitions. [2022-02-11 01:08:41,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.289473684210526) internal successors, (174), 75 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:08:41,223 INFO L276 IsEmpty]: Start isEmpty. Operand 182977 states and 448583 transitions. [2022-02-11 01:08:41,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-11 01:08:41,345 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:08:41,345 INFO L515 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:08:41,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-02-11 01:08:41,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:08:41,560 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:08:41,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:08:41,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1702662933, now seen corresponding path program 81 times [2022-02-11 01:08:41,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:08:41,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900605241] [2022-02-11 01:08:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:08:41,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:08:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:08:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 56 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:08:41,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:08:41,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900605241] [2022-02-11 01:08:41,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900605241] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:08:41,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588529225] [2022-02-11 01:08:41,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 01:08:41,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:08:41,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:08:41,907 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:08:41,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-11 01:08:41,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2022-02-11 01:08:41,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:08:41,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-11 01:08:41,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:08:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 56 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:08:43,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:08:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 56 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:08:44,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588529225] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:08:44,831 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:08:44,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29, 32] total 84 [2022-02-11 01:08:44,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146702228] [2022-02-11 01:08:44,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:08:44,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-02-11 01:08:44,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:08:44,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-02-11 01:08:44,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1109, Invalid=6031, Unknown=0, NotChecked=0, Total=7140 [2022-02-11 01:08:44,832 INFO L87 Difference]: Start difference. First operand 182977 states and 448583 transitions. Second operand has 85 states, 85 states have (on average 2.1294117647058823) internal successors, (181), 84 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:08:58,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:08:58,044 INFO L93 Difference]: Finished difference Result 357189 states and 859925 transitions. [2022-02-11 01:08:58,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 299 states. [2022-02-11 01:08:58,045 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.1294117647058823) internal successors, (181), 84 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-02-11 01:08:58,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:08:59,769 INFO L225 Difference]: With dead ends: 357189 [2022-02-11 01:08:59,769 INFO L226 Difference]: Without dead ends: 355188 [2022-02-11 01:08:59,773 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58997 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=31446, Invalid=111816, Unknown=0, NotChecked=0, Total=143262 [2022-02-11 01:08:59,774 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 1455 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 4371 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 5051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 4371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:08:59,774 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1455 Valid, 473 Invalid, 5051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 4371 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-11 01:09:00,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355188 states. [2022-02-11 01:09:05,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355188 to 170018. [2022-02-11 01:09:05,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170018 states, 170017 states have (on average 2.4511842933353725) internal successors, (416743), 170017 states have internal predecessors, (416743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:06,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170018 states to 170018 states and 416743 transitions. [2022-02-11 01:09:06,412 INFO L78 Accepts]: Start accepts. Automaton has 170018 states and 416743 transitions. Word has length 63 [2022-02-11 01:09:06,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 01:09:06,412 INFO L470 AbstractCegarLoop]: Abstraction has 170018 states and 416743 transitions. [2022-02-11 01:09:06,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.1294117647058823) internal successors, (181), 84 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:06,412 INFO L276 IsEmpty]: Start isEmpty. Operand 170018 states and 416743 transitions. [2022-02-11 01:09:06,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-11 01:09:06,505 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 01:09:06,505 INFO L515 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 01:09:06,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:06,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:06,722 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 01:09:06,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 01:09:06,723 INFO L85 PathProgramCache]: Analyzing trace with hash 147791727, now seen corresponding path program 82 times [2022-02-11 01:09:06,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 01:09:06,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574864761] [2022-02-11 01:09:06,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 01:09:06,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 01:09:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 01:09:07,058 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 72 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:07,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 01:09:07,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574864761] [2022-02-11 01:09:07,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574864761] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 01:09:07,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545290232] [2022-02-11 01:09:07,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 01:09:07,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 01:09:07,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 01:09:07,060 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 01:09:07,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-11 01:09:07,091 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 01:09:07,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 01:09:07,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 49 conjunts are in the unsatisfiable core [2022-02-11 01:09:07,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 01:09:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 72 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:08,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 01:09:09,233 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 90 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 01:09:09,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545290232] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 01:09:09,233 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 01:09:09,234 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 31] total 83 [2022-02-11 01:09:09,234 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903475386] [2022-02-11 01:09:09,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 01:09:09,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-11 01:09:09,234 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 01:09:09,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-11 01:09:09,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1089, Invalid=5883, Unknown=0, NotChecked=0, Total=6972 [2022-02-11 01:09:09,235 INFO L87 Difference]: Start difference. First operand 170018 states and 416743 transitions. Second operand has 84 states, 84 states have (on average 2.119047619047619) internal successors, (178), 83 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 01:09:21,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 01:09:21,491 INFO L93 Difference]: Finished difference Result 275184 states and 664152 transitions. [2022-02-11 01:09:21,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 296 states. [2022-02-11 01:09:21,492 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.119047619047619) internal successors, (178), 83 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-02-11 01:09:21,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 01:09:22,673 INFO L225 Difference]: With dead ends: 275184 [2022-02-11 01:09:22,673 INFO L226 Difference]: Without dead ends: 273672 [2022-02-11 01:09:22,677 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 373 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56237 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=31109, Invalid=109141, Unknown=0, NotChecked=0, Total=140250 [2022-02-11 01:09:22,678 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 1295 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 4131 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 4648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 4131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-11 01:09:22,678 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1295 Valid, 512 Invalid, 4648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 4131 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-11 01:09:23,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273672 states. Received shutdown request... [2022-02-11 01:09:25,006 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-11 01:09:25,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-02-11 01:09:25,024 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-11 01:09:25,024 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-11 01:09:25,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2022-02-11 01:09:25,216 WARN L594 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2022-02-11 01:09:25,217 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-11 01:09:25,217 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-11 01:09:25,219 INFO L733 BasicCegarLoop]: Path program histogram: [82, 1, 1] [2022-02-11 01:09:25,221 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-11 01:09:25,221 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-11 01:09:25,223 INFO L202 PluginConnector]: Adding new model nonblocking-cntr.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.02 01:09:25 BasicIcfg [2022-02-11 01:09:25,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-11 01:09:25,223 INFO L158 Benchmark]: Toolchain (without parser) took 867928.77ms. Allocated memory was 195.0MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 160.7MB in the beginning and 5.9GB in the end (delta: -5.7GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2022-02-11 01:09:25,223 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 195.0MB. Free memory was 161.8MB in the beginning and 161.7MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-11 01:09:25,223 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.95ms. Allocated memory is still 195.0MB. Free memory was 160.6MB in the beginning and 159.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-11 01:09:25,223 INFO L158 Benchmark]: Boogie Preprocessor took 9.32ms. Allocated memory is still 195.0MB. Free memory was 159.1MB in the beginning and 158.2MB in the end (delta: 934.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-11 01:09:25,223 INFO L158 Benchmark]: RCFGBuilder took 193.67ms. Allocated memory is still 195.0MB. Free memory was 158.1MB in the beginning and 149.2MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-11 01:09:25,223 INFO L158 Benchmark]: TraceAbstraction took 867705.61ms. Allocated memory was 195.0MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 148.6MB in the beginning and 5.9GB in the end (delta: -5.7GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2022-02-11 01:09:25,224 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12ms. Allocated memory is still 195.0MB. Free memory was 161.8MB in the beginning and 161.7MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 16.95ms. Allocated memory is still 195.0MB. Free memory was 160.6MB in the beginning and 159.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 9.32ms. Allocated memory is still 195.0MB. Free memory was 159.1MB in the beginning and 158.2MB in the end (delta: 934.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 193.67ms. Allocated memory is still 195.0MB. Free memory was 158.1MB in the beginning and 149.2MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 867705.61ms. Allocated memory was 195.0MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 148.6MB in the beginning and 5.9GB in the end (delta: -5.7GB). Peak memory consumption was 2.2GB. 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: 50]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 32 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 867.6s, OverallIterations: 84, TraceHistogramMax: 12, PathProgramHistogramMax: 82, EmptinessCheckTime: 3.1s, AutomataDifference: 602.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 63608 SdHoareTripleChecker+Valid, 86.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63608 mSDsluCounter, 37873 SdHoareTripleChecker+Invalid, 73.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 69169 mSDsCounter, 23549 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 215820 IncrementalHoareTripleChecker+Invalid, 239369 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23549 mSolverCounterUnsat, 2285 mSDtfsCounter, 215820 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18933 GetRequests, 4852 SyntacticMatches, 117 SemanticMatches, 13964 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1409651 ImplicationChecksByTransitivity, 518.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=182977occurred in iteration=82, InterpolantAutomatonStates: 10703, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 85.5s AutomataMinimizationTime, 84 MinimizatonAttempts, 1488463 StatesRemovedByMinimization, 83 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 154.2s InterpolantComputationTime, 7292 NumberOfCodeBlocks, 7292 NumberOfCodeBlocksAsserted, 521 NumberOfCheckSat, 10674 ConstructedInterpolants, 0 QuantifiedInterpolants, 158625 SizeOfPredicates, 612 NumberOfNonLiveVariables, 8378 ConjunctsInSsa, 2951 ConjunctsInUnsatCore, 248 InterpolantComputations, 2 PerfectInterpolantSequences, 8251/31759 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