/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-alt.wvr.bpl
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This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd
[2022-02-09 03:13:28,706 INFO L177 SettingsManager]: Resetting all preferences to default values...
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[2022-02-09 03:13:28,790 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
[2022-02-09 03:13:28,814 INFO L113 SettingsManager]: Loading preferences was successful
[2022-02-09 03:13:28,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-02-09 03:13:28,815 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-02-09 03:13:28,815 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-02-09 03:13:28,816 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-02-09 03:13:28,816 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-02-09 03:13:28,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-02-09 03:13:28,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-02-09 03:13:28,817 INFO L138 SettingsManager]: * Use SBE=true
[2022-02-09 03:13:28,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-02-09 03:13:28,817 INFO L138 SettingsManager]: * sizeof long=4
[2022-02-09 03:13:28,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-02-09 03:13:28,817 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-02-09 03:13:28,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-02-09 03:13:28,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-02-09 03:13:28,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-02-09 03:13:28,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-02-09 03:13:28,818 INFO L138 SettingsManager]: * sizeof long double=12
[2022-02-09 03:13:28,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-02-09 03:13:28,818 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-02-09 03:13:28,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-02-09 03:13:28,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-02-09 03:13:28,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-02-09 03:13:28,818 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-02-09 03:13:28,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-02-09 03:13:28,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-09 03:13:28,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-02-09 03:13:28,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-02-09 03:13:28,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-02-09 03:13:28,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-02-09 03:13:28,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-02-09 03:13:28,820 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2022-02-09 03:13:28,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-02-09 03:13:28,820 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2022-02-09 03:13:29,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-02-09 03:13:29,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-02-09 03:13:29,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-02-09 03:13:29,035 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser...
[2022-02-09 03:13:29,036 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized
[2022-02-09 03:13:29,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/nonblocking-cntr-alt.wvr.bpl
[2022-02-09 03:13:29,037 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/nonblocking-cntr-alt.wvr.bpl'
[2022-02-09 03:13:29,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-02-09 03:13:29,055 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2022-02-09 03:13:29,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-02-09 03:13:29,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-02-09 03:13:29,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-02-09 03:13:29,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:13:29" (1/1) ...
[2022-02-09 03:13:29,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:13:29" (1/1) ...
[2022-02-09 03:13:29,083 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0
[2022-02-09 03:13:29,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-02-09 03:13:29,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-02-09 03:13:29,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-02-09 03:13:29,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-02-09 03:13:29,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:13:29" (1/1) ...
[2022-02-09 03:13:29,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:13:29" (1/1) ...
[2022-02-09 03:13:29,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:13:29" (1/1) ...
[2022-02-09 03:13:29,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:13:29" (1/1) ...
[2022-02-09 03:13:29,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:13:29" (1/1) ...
[2022-02-09 03:13:29,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:13:29" (1/1) ...
[2022-02-09 03:13:29,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:13:29" (1/1) ...
[2022-02-09 03:13:29,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-02-09 03:13:29,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-02-09 03:13:29,104 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-02-09 03:13:29,104 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-02-09 03:13:29,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:13:29" (1/1) ...
[2022-02-09 03:13:29,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-09 03:13:29,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:13:29,135 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)
[2022-02-09 03:13:29,143 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
[2022-02-09 03:13:29,173 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration
[2022-02-09 03:13:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2022-02-09 03:13:29,173 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2022-02-09 03:13:29,173 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration
[2022-02-09 03:13:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2022-02-09 03:13:29,173 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2022-02-09 03:13:29,173 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2022-02-09 03:13:29,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-02-09 03:13:29,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-02-09 03:13:29,174 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2022-02-09 03:13:29,218 INFO L234 CfgBuilder]: Building ICFG
[2022-02-09 03:13:29,220 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-02-09 03:13:29,292 INFO L275 CfgBuilder]: Performing block encoding
[2022-02-09 03:13:29,302 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-02-09 03:13:29,302 INFO L299 CfgBuilder]: Removed 0 assume(true) statements.
[2022-02-09 03:13:29,304 INFO L202 PluginConnector]: Adding new model nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 03:13:29 BoogieIcfgContainer
[2022-02-09 03:13:29,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-02-09 03:13:29,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-02-09 03:13:29,306 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-02-09 03:13:29,309 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-02-09 03:13:29,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 03:13:29" (1/2) ...
[2022-02-09 03:13:29,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3842b24d and model type nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 03:13:29, skipping insertion in model container
[2022-02-09 03:13:29,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 03:13:29" (2/2) ...
[2022-02-09 03:13:29,312 INFO L111 eAbstractionObserver]: Analyzing ICFG nonblocking-cntr-alt.wvr.bpl
[2022-02-09 03:13:29,317 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2022-02-09 03:13:29,317 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-02-09 03:13:29,317 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-02-09 03:13:29,318 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2022-02-09 03:13:29,368 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2022-02-09 03:13:29,443 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-02-09 03:13:29,456 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, mLazyFiniteAutomaton=false, 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
[2022-02-09 03:13:29,457 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2022-02-09 03:13:29,472 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 23 transitions, 62 flow
[2022-02-09 03:13:29,490 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)
[2022-02-09 03:13:29,495 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)
[2022-02-09 03:13:29,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-02-09 03:13:29,504 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:13:29,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:13:29,506 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:13:29,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:13:29,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1631855703, now seen corresponding path program 1 times
[2022-02-09 03:13:29,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:13:29,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831466936]
[2022-02-09 03:13:29,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:13:29,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:13:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:29,658 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:13:29,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831466936]
[2022-02-09 03:13:29,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831466936] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-09 03:13:29,659 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-09 03:13:29,659 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-09 03:13:29,661 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477662144]
[2022-02-09 03:13:29,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-09 03:13:29,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-02-09 03:13:29,666 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:13:29,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-02-09 03:13:29,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-02-09 03:13:29,701 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), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:29,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:13:29,753 INFO L93 Difference]: Finished difference Result 43 states and 77 transitions.
[2022-02-09 03:13:29,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-02-09 03:13:29,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15
[2022-02-09 03:13:29,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:13:29,761 INFO L225 Difference]: With dead ends: 43
[2022-02-09 03:13:29,761 INFO L226 Difference]: Without dead ends: 43
[2022-02-09 03:13:29,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-02-09 03:13:29,765 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-09 03:13:29,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 28 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-09 03:13:29,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2022-02-09 03:13:29,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38.
[2022-02-09 03:13:29,795 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)
[2022-02-09 03:13:29,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 67 transitions.
[2022-02-09 03:13:29,796 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 67 transitions. Word has length 15
[2022-02-09 03:13:29,797 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:13:29,797 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 67 transitions.
[2022-02-09 03:13:29,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:29,797 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 67 transitions.
[2022-02-09 03:13:29,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-02-09 03:13:29,798 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:13:29,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:13:29,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-02-09 03:13:29,798 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:13:29,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:13:29,799 INFO L85 PathProgramCache]: Analyzing trace with hash 703590631, now seen corresponding path program 1 times
[2022-02-09 03:13:29,799 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:13:29,799 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636026611]
[2022-02-09 03:13:29,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:13:29,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:13:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-09 03:13:29,852 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:13:29,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636026611]
[2022-02-09 03:13:29,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636026611] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-09 03:13:29,853 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-09 03:13:29,853 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-02-09 03:13:29,853 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112939603]
[2022-02-09 03:13:29,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-09 03:13:29,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-02-09 03:13:29,854 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:13:29,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-02-09 03:13:29,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-02-09 03:13:29,855 INFO L87 Difference]: Start difference. First operand 38 states and 67 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:29,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:13:29,881 INFO L93 Difference]: Finished difference Result 50 states and 91 transitions.
[2022-02-09 03:13:29,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-02-09 03:13:29,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17
[2022-02-09 03:13:29,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:13:29,882 INFO L225 Difference]: With dead ends: 50
[2022-02-09 03:13:29,883 INFO L226 Difference]: Without dead ends: 50
[2022-02-09 03:13:29,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-02-09 03:13:29,884 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 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
[2022-02-09 03:13:29,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 30 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-09 03:13:29,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2022-02-09 03:13:29,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44.
[2022-02-09 03:13:29,891 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)
[2022-02-09 03:13:29,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 79 transitions.
[2022-02-09 03:13:29,893 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 79 transitions. Word has length 17
[2022-02-09 03:13:29,893 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:13:29,893 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 79 transitions.
[2022-02-09 03:13:29,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 79 transitions.
[2022-02-09 03:13:29,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-02-09 03:13:29,894 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:13:29,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:13:29,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-02-09 03:13:29,895 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:13:29,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:13:29,895 INFO L85 PathProgramCache]: Analyzing trace with hash 917506533, now seen corresponding path program 1 times
[2022-02-09 03:13:29,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:13:29,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609161107]
[2022-02-09 03:13:29,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:13:29,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:13:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:30,277 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:13:30,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609161107]
[2022-02-09 03:13:30,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609161107] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:13:30,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085846724]
[2022-02-09 03:13:30,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:13:30,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:13:30,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:13:30,280 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)
[2022-02-09 03:13:30,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-02-09 03:13:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:30,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 15 conjunts are in the unsatisfiable core
[2022-02-09 03:13:30,322 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:13:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:30,677 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:13:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:31,360 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085846724] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:13:31,361 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:13:31,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23
[2022-02-09 03:13:31,361 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223459832]
[2022-02-09 03:13:31,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:13:31,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2022-02-09 03:13:31,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:13:31,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2022-02-09 03:13:31,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552
[2022-02-09 03:13:31,363 INFO L87 Difference]: Start difference. First operand 44 states and 79 transitions. Second operand has 24 states, 24 states have (on average 2.0) internal successors, (48), 23 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)
[2022-02-09 03:13:31,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:13:31,754 INFO L93 Difference]: Finished difference Result 131 states and 244 transitions.
[2022-02-09 03:13:31,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2022-02-09 03:13:31,754 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 23 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 19
[2022-02-09 03:13:31,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:13:31,755 INFO L225 Difference]: With dead ends: 131
[2022-02-09 03:13:31,756 INFO L226 Difference]: Without dead ends: 100
[2022-02-09 03:13:31,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812
[2022-02-09 03:13:31,757 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 81 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-09 03:13:31,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 116 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-09 03:13:31,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2022-02-09 03:13:31,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 62.
[2022-02-09 03:13:31,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.9672131147540983) internal successors, (120), 61 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)
[2022-02-09 03:13:31,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 120 transitions.
[2022-02-09 03:13:31,765 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 120 transitions. Word has length 19
[2022-02-09 03:13:31,765 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:13:31,766 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 120 transitions.
[2022-02-09 03:13:31,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 23 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)
[2022-02-09 03:13:31,766 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 120 transitions.
[2022-02-09 03:13:31,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-02-09 03:13:31,767 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:13:31,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:13:31,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-02-09 03:13:31,991 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
[2022-02-09 03:13:31,992 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:13:31,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:13:31,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1966880365, now seen corresponding path program 2 times
[2022-02-09 03:13:31,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:13:31,993 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364495421]
[2022-02-09 03:13:31,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:13:31,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:13:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:32,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:32,175 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:13:32,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364495421]
[2022-02-09 03:13:32,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364495421] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:13:32,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945283039]
[2022-02-09 03:13:32,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-09 03:13:32,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:13:32,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:13:32,192 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)
[2022-02-09 03:13:32,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-02-09 03:13:32,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-09 03:13:32,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:13:32,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 15 conjunts are in the unsatisfiable core
[2022-02-09 03:13:32,254 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:13:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:32,597 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:13:33,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:33,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945283039] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:13:33,106 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:13:33,106 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22
[2022-02-09 03:13:33,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528384780]
[2022-02-09 03:13:33,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:13:33,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2022-02-09 03:13:33,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:13:33,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2022-02-09 03:13:33,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506
[2022-02-09 03:13:33,108 INFO L87 Difference]: Start difference. First operand 62 states and 120 transitions. Second operand has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:33,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:13:33,528 INFO L93 Difference]: Finished difference Result 142 states and 262 transitions.
[2022-02-09 03:13:33,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2022-02-09 03:13:33,528 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have 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
[2022-02-09 03:13:33,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:13:33,529 INFO L225 Difference]: With dead ends: 142
[2022-02-09 03:13:33,530 INFO L226 Difference]: Without dead ends: 120
[2022-02-09 03:13:33,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930
[2022-02-09 03:13:33,531 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 92 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-09 03:13:33,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 161 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-09 03:13:33,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states.
[2022-02-09 03:13:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 57.
[2022-02-09 03:13:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.9285714285714286) internal successors, (108), 56 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)
[2022-02-09 03:13:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 108 transitions.
[2022-02-09 03:13:33,539 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 108 transitions. Word has length 19
[2022-02-09 03:13:33,539 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:13:33,539 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 108 transitions.
[2022-02-09 03:13:33,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:33,539 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 108 transitions.
[2022-02-09 03:13:33,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-02-09 03:13:33,540 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:13:33,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:13:33,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-02-09 03:13:33,765 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
[2022-02-09 03:13:33,765 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:13:33,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:13:33,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1678017961, now seen corresponding path program 3 times
[2022-02-09 03:13:33,766 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:13:33,766 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866963900]
[2022-02-09 03:13:33,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:13:33,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:13:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:33,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:33,917 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:13:33,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866963900]
[2022-02-09 03:13:33,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866963900] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:13:33,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922716112]
[2022-02-09 03:13:33,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-09 03:13:33,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:13:33,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:13:33,924 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)
[2022-02-09 03:13:33,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-02-09 03:13:33,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2022-02-09 03:13:33,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:13:33,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 15 conjunts are in the unsatisfiable core
[2022-02-09 03:13:33,950 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:13:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:34,327 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:13:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:34,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922716112] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:13:34,879 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:13:34,879 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22
[2022-02-09 03:13:34,879 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295938824]
[2022-02-09 03:13:34,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:13:34,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2022-02-09 03:13:34,880 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:13:34,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2022-02-09 03:13:34,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506
[2022-02-09 03:13:34,881 INFO L87 Difference]: Start difference. First operand 57 states and 108 transitions. Second operand has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:35,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:13:35,208 INFO L93 Difference]: Finished difference Result 93 states and 174 transitions.
[2022-02-09 03:13:35,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2022-02-09 03:13:35,208 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have 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
[2022-02-09 03:13:35,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:13:35,210 INFO L225 Difference]: With dead ends: 93
[2022-02-09 03:13:35,210 INFO L226 Difference]: Without dead ends: 86
[2022-02-09 03:13:35,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756
[2022-02-09 03:13:35,211 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 63 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-09 03:13:35,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 83 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-09 03:13:35,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2022-02-09 03:13:35,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 55.
[2022-02-09 03:13:35,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.9074074074074074) internal successors, (103), 54 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 103 transitions.
[2022-02-09 03:13:35,216 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 103 transitions. Word has length 19
[2022-02-09 03:13:35,216 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:13:35,216 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 103 transitions.
[2022-02-09 03:13:35,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:35,217 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 103 transitions.
[2022-02-09 03:13:35,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-02-09 03:13:35,217 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:13:35,217 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:13:35,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-02-09 03:13:35,418 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
[2022-02-09 03:13:35,418 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:13:35,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:13:35,419 INFO L85 PathProgramCache]: Analyzing trace with hash 859525155, now seen corresponding path program 4 times
[2022-02-09 03:13:35,419 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:13:35,419 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216543724]
[2022-02-09 03:13:35,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:13:35,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:13:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:35,766 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:13:35,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216543724]
[2022-02-09 03:13:35,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216543724] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:13:35,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373713418]
[2022-02-09 03:13:35,768 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-09 03:13:35,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:13:35,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:13:35,769 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)
[2022-02-09 03:13:35,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-02-09 03:13:35,798 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-09 03:13:35,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:13:35,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 20 conjunts are in the unsatisfiable core
[2022-02-09 03:13:35,803 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:13:36,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:36,225 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:13:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:36,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373713418] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:13:36,803 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:13:36,804 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27
[2022-02-09 03:13:36,804 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986440732]
[2022-02-09 03:13:36,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:13:36,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-02-09 03:13:36,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:13:36,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-02-09 03:13:36,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756
[2022-02-09 03:13:36,805 INFO L87 Difference]: Start difference. First operand 55 states and 103 transitions. Second operand has 28 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 27 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)
[2022-02-09 03:13:37,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:13:37,430 INFO L93 Difference]: Finished difference Result 120 states and 223 transitions.
[2022-02-09 03:13:37,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2022-02-09 03:13:37,432 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 27 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 21
[2022-02-09 03:13:37,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:13:37,433 INFO L225 Difference]: With dead ends: 120
[2022-02-09 03:13:37,433 INFO L226 Difference]: Without dead ends: 106
[2022-02-09 03:13:37,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=273, Invalid=1209, Unknown=0, NotChecked=0, Total=1482
[2022-02-09 03:13:37,435 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 127 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-09 03:13:37,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 110 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-09 03:13:37,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states.
[2022-02-09 03:13:37,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 59.
[2022-02-09 03:13:37,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.8620689655172413) internal successors, (108), 58 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)
[2022-02-09 03:13:37,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 108 transitions.
[2022-02-09 03:13:37,443 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 108 transitions. Word has length 21
[2022-02-09 03:13:37,443 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:13:37,443 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 108 transitions.
[2022-02-09 03:13:37,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 27 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)
[2022-02-09 03:13:37,444 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 108 transitions.
[2022-02-09 03:13:37,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-02-09 03:13:37,444 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:13:37,445 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:13:37,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2022-02-09 03:13:37,645 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
[2022-02-09 03:13:37,645 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:13:37,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:13:37,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1908898987, now seen corresponding path program 5 times
[2022-02-09 03:13:37,646 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:13:37,646 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193197526]
[2022-02-09 03:13:37,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:13:37,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:13:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:37,840 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:37,840 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:13:37,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193197526]
[2022-02-09 03:13:37,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193197526] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:13:37,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737662906]
[2022-02-09 03:13:37,841 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-09 03:13:37,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:13:37,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:13:37,842 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)
[2022-02-09 03:13:37,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-02-09 03:13:37,872 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2022-02-09 03:13:37,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:13:37,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 20 conjunts are in the unsatisfiable core
[2022-02-09 03:13:37,874 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:13:38,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:38,254 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:13:38,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:38,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737662906] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:13:38,838 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:13:38,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26
[2022-02-09 03:13:38,839 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247143832]
[2022-02-09 03:13:38,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:13:38,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2022-02-09 03:13:38,839 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:13:38,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2022-02-09 03:13:38,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702
[2022-02-09 03:13:38,840 INFO L87 Difference]: Start difference. First operand 59 states and 108 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:39,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:13:39,685 INFO L93 Difference]: Finished difference Result 157 states and 284 transitions.
[2022-02-09 03:13:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2022-02-09 03:13:39,686 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2022-02-09 03:13:39,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:13:39,687 INFO L225 Difference]: With dead ends: 157
[2022-02-09 03:13:39,687 INFO L226 Difference]: Without dead ends: 143
[2022-02-09 03:13:39,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=310, Invalid=1412, Unknown=0, NotChecked=0, Total=1722
[2022-02-09 03:13:39,689 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 155 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-09 03:13:39,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 145 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-09 03:13:39,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states.
[2022-02-09 03:13:39,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 60.
[2022-02-09 03:13:39,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.8983050847457628) internal successors, (112), 59 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)
[2022-02-09 03:13:39,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 112 transitions.
[2022-02-09 03:13:39,693 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 112 transitions. Word has length 21
[2022-02-09 03:13:39,695 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:13:39,695 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 112 transitions.
[2022-02-09 03:13:39,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:39,695 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 112 transitions.
[2022-02-09 03:13:39,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-02-09 03:13:39,696 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:13:39,696 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:13:39,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2022-02-09 03:13:39,907 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
[2022-02-09 03:13:39,908 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:13:39,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:13:39,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1735999339, now seen corresponding path program 6 times
[2022-02-09 03:13:39,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:13:39,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365469105]
[2022-02-09 03:13:39,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:13:39,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:13:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:40,141 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:13:40,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365469105]
[2022-02-09 03:13:40,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365469105] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:13:40,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483267578]
[2022-02-09 03:13:40,142 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-02-09 03:13:40,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:13:40,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:13:40,143 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)
[2022-02-09 03:13:40,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2022-02-09 03:13:40,168 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2022-02-09 03:13:40,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:13:40,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 20 conjunts are in the unsatisfiable core
[2022-02-09 03:13:40,170 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:13:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:40,481 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:13:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:40,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483267578] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:13:40,999 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:13:40,999 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26
[2022-02-09 03:13:40,999 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124424054]
[2022-02-09 03:13:40,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:13:41,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2022-02-09 03:13:41,000 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:13:41,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2022-02-09 03:13:41,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702
[2022-02-09 03:13:41,001 INFO L87 Difference]: Start difference. First operand 60 states and 112 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:41,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:13:41,606 INFO L93 Difference]: Finished difference Result 127 states and 238 transitions.
[2022-02-09 03:13:41,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2022-02-09 03:13:41,606 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2022-02-09 03:13:41,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:13:41,607 INFO L225 Difference]: With dead ends: 127
[2022-02-09 03:13:41,607 INFO L226 Difference]: Without dead ends: 113
[2022-02-09 03:13:41,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=279, Invalid=1281, Unknown=0, NotChecked=0, Total=1560
[2022-02-09 03:13:41,609 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 151 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-09 03:13:41,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 123 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-09 03:13:41,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2022-02-09 03:13:41,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 60.
[2022-02-09 03:13:41,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.8983050847457628) internal successors, (112), 59 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)
[2022-02-09 03:13:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 112 transitions.
[2022-02-09 03:13:41,613 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 112 transitions. Word has length 21
[2022-02-09 03:13:41,614 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:13:41,614 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 112 transitions.
[2022-02-09 03:13:41,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 112 transitions.
[2022-02-09 03:13:41,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-02-09 03:13:41,617 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:13:41,617 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:13:41,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2022-02-09 03:13:41,835 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
[2022-02-09 03:13:41,836 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:13:41,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:13:41,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1011257333, now seen corresponding path program 7 times
[2022-02-09 03:13:41,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:13:41,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115080065]
[2022-02-09 03:13:41,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:13:41,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:13:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:41,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:41,997 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:13:41,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115080065]
[2022-02-09 03:13:41,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115080065] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:13:41,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642568408]
[2022-02-09 03:13:41,998 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2022-02-09 03:13:41,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:13:41,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:13:42,002 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)
[2022-02-09 03:13:42,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2022-02-09 03:13:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:42,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 20 conjunts are in the unsatisfiable core
[2022-02-09 03:13:42,023 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:13:42,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:42,395 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:13:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:43,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642568408] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:13:43,058 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:13:43,058 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28
[2022-02-09 03:13:43,058 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675918251]
[2022-02-09 03:13:43,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:13:43,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2022-02-09 03:13:43,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:13:43,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2022-02-09 03:13:43,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812
[2022-02-09 03:13:43,059 INFO L87 Difference]: Start difference. First operand 60 states and 112 transitions. Second operand has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 28 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)
[2022-02-09 03:13:44,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:13:44,196 INFO L93 Difference]: Finished difference Result 204 states and 369 transitions.
[2022-02-09 03:13:44,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2022-02-09 03:13:44,196 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 28 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 21
[2022-02-09 03:13:44,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:13:44,197 INFO L225 Difference]: With dead ends: 204
[2022-02-09 03:13:44,198 INFO L226 Difference]: Without dead ends: 176
[2022-02-09 03:13:44,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=475, Invalid=2075, Unknown=0, NotChecked=0, Total=2550
[2022-02-09 03:13:44,199 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 171 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-09 03:13:44,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 235 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-09 03:13:44,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states.
[2022-02-09 03:13:44,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 73.
[2022-02-09 03:13:44,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 2.0277777777777777) internal successors, (146), 72 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)
[2022-02-09 03:13:44,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 146 transitions.
[2022-02-09 03:13:44,204 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 146 transitions. Word has length 21
[2022-02-09 03:13:44,204 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:13:44,205 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 146 transitions.
[2022-02-09 03:13:44,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 28 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)
[2022-02-09 03:13:44,205 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 146 transitions.
[2022-02-09 03:13:44,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-02-09 03:13:44,206 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:13:44,206 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:13:44,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2022-02-09 03:13:44,418 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
[2022-02-09 03:13:44,418 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:13:44,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:13:44,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1661326303, now seen corresponding path program 8 times
[2022-02-09 03:13:44,419 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:13:44,419 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169831956]
[2022-02-09 03:13:44,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:13:44,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:13:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:44,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:44,567 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:13:44,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169831956]
[2022-02-09 03:13:44,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169831956] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:13:44,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596732099]
[2022-02-09 03:13:44,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-09 03:13:44,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:13:44,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:13:44,568 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)
[2022-02-09 03:13:44,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2022-02-09 03:13:44,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-09 03:13:44,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:13:44,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 20 conjunts are in the unsatisfiable core
[2022-02-09 03:13:44,608 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:13:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:44,926 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:13:45,473 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:45,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596732099] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:13:45,474 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:13:45,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28
[2022-02-09 03:13:45,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403546266]
[2022-02-09 03:13:45,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:13:45,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2022-02-09 03:13:45,474 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:13:45,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2022-02-09 03:13:45,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=665, Unknown=0, NotChecked=0, Total=812
[2022-02-09 03:13:45,475 INFO L87 Difference]: Start difference. First operand 73 states and 146 transitions. Second operand has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 28 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)
[2022-02-09 03:13:46,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:13:46,677 INFO L93 Difference]: Finished difference Result 201 states and 368 transitions.
[2022-02-09 03:13:46,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2022-02-09 03:13:46,678 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 28 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 21
[2022-02-09 03:13:46,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:13:46,678 INFO L225 Difference]: With dead ends: 201
[2022-02-09 03:13:46,678 INFO L226 Difference]: Without dead ends: 187
[2022-02-09 03:13:46,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=478, Invalid=2278, Unknown=0, NotChecked=0, Total=2756
[2022-02-09 03:13:46,680 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 198 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-09 03:13:46,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 172 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-09 03:13:46,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states.
[2022-02-09 03:13:46,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 74.
[2022-02-09 03:13:46,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.041095890410959) internal successors, (149), 73 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:46,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 149 transitions.
[2022-02-09 03:13:46,683 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 149 transitions. Word has length 21
[2022-02-09 03:13:46,683 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:13:46,683 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 149 transitions.
[2022-02-09 03:13:46,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 28 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)
[2022-02-09 03:13:46,683 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 149 transitions.
[2022-02-09 03:13:46,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-02-09 03:13:46,684 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:13:46,684 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:13:46,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2022-02-09 03:13:46,907 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
[2022-02-09 03:13:46,908 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:13:46,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:13:46,908 INFO L85 PathProgramCache]: Analyzing trace with hash -399533499, now seen corresponding path program 9 times
[2022-02-09 03:13:46,909 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:13:46,909 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191940216]
[2022-02-09 03:13:46,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:13:46,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:13:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:47,100 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:47,101 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:13:47,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191940216]
[2022-02-09 03:13:47,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191940216] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:13:47,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488323005]
[2022-02-09 03:13:47,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-09 03:13:47,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:13:47,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:13:47,102 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)
[2022-02-09 03:13:47,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2022-02-09 03:13:47,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2022-02-09 03:13:47,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:13:47,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 20 conjunts are in the unsatisfiable core
[2022-02-09 03:13:47,134 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:13:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:47,481 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:13:48,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:48,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488323005] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:13:48,025 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:13:48,026 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28
[2022-02-09 03:13:48,026 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604094250]
[2022-02-09 03:13:48,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:13:48,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2022-02-09 03:13:48,027 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:13:48,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2022-02-09 03:13:48,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812
[2022-02-09 03:13:48,029 INFO L87 Difference]: Start difference. First operand 74 states and 149 transitions. Second operand has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 28 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)
[2022-02-09 03:13:48,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:13:48,670 INFO L93 Difference]: Finished difference Result 121 states and 227 transitions.
[2022-02-09 03:13:48,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2022-02-09 03:13:48,671 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 28 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 21
[2022-02-09 03:13:48,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:13:48,672 INFO L225 Difference]: With dead ends: 121
[2022-02-09 03:13:48,672 INFO L226 Difference]: Without dead ends: 107
[2022-02-09 03:13:48,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=291, Invalid=1431, Unknown=0, NotChecked=0, Total=1722
[2022-02-09 03:13:48,674 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 133 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-09 03:13:48,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 135 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-09 03:13:48,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2022-02-09 03:13:48,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 76.
[2022-02-09 03:13:48,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.026666666666667) internal successors, (152), 75 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:48,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 152 transitions.
[2022-02-09 03:13:48,692 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 152 transitions. Word has length 21
[2022-02-09 03:13:48,692 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:13:48,692 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 152 transitions.
[2022-02-09 03:13:48,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 28 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)
[2022-02-09 03:13:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 152 transitions.
[2022-02-09 03:13:48,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-02-09 03:13:48,693 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:13:48,693 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:13:48,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2022-02-09 03:13:48,901 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
[2022-02-09 03:13:48,915 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:13:48,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:13:48,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1239609169, now seen corresponding path program 10 times
[2022-02-09 03:13:48,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:13:48,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120212125]
[2022-02-09 03:13:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:13:48,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:13:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:49,092 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:49,093 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:13:49,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120212125]
[2022-02-09 03:13:49,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120212125] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:13:49,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813240557]
[2022-02-09 03:13:49,093 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-09 03:13:49,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:13:49,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:13:49,094 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)
[2022-02-09 03:13:49,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2022-02-09 03:13:49,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-09 03:13:49,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:13:49,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 20 conjunts are in the unsatisfiable core
[2022-02-09 03:13:49,138 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:13:49,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:49,439 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:13:49,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:49,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813240557] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:13:49,911 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:13:49,911 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28
[2022-02-09 03:13:49,911 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806690039]
[2022-02-09 03:13:49,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:13:49,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2022-02-09 03:13:49,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:13:49,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2022-02-09 03:13:49,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812
[2022-02-09 03:13:49,912 INFO L87 Difference]: Start difference. First operand 76 states and 152 transitions. Second operand has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 28 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)
[2022-02-09 03:13:50,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:13:50,875 INFO L93 Difference]: Finished difference Result 177 states and 326 transitions.
[2022-02-09 03:13:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2022-02-09 03:13:50,875 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 28 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 21
[2022-02-09 03:13:50,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:13:50,881 INFO L225 Difference]: With dead ends: 177
[2022-02-09 03:13:50,882 INFO L226 Difference]: Without dead ends: 163
[2022-02-09 03:13:50,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=536, Invalid=2434, Unknown=0, NotChecked=0, Total=2970
[2022-02-09 03:13:50,883 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 225 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-09 03:13:50,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 163 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-09 03:13:50,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states.
[2022-02-09 03:13:50,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 75.
[2022-02-09 03:13:50,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 2.0) internal successors, (148), 74 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 148 transitions.
[2022-02-09 03:13:50,899 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 148 transitions. Word has length 21
[2022-02-09 03:13:50,899 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:13:50,899 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 148 transitions.
[2022-02-09 03:13:50,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 28 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)
[2022-02-09 03:13:50,900 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 148 transitions.
[2022-02-09 03:13:50,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-02-09 03:13:50,900 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:13:50,900 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:13:50,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2022-02-09 03:13:51,101 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
[2022-02-09 03:13:51,101 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:13:51,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:13:51,102 INFO L85 PathProgramCache]: Analyzing trace with hash -589540199, now seen corresponding path program 11 times
[2022-02-09 03:13:51,102 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:13:51,102 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985183057]
[2022-02-09 03:13:51,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:13:51,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:13:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:51,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:51,285 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:13:51,285 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985183057]
[2022-02-09 03:13:51,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985183057] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:13:51,285 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807446630]
[2022-02-09 03:13:51,285 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-09 03:13:51,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:13:51,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:13:51,286 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)
[2022-02-09 03:13:51,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2022-02-09 03:13:51,316 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2022-02-09 03:13:51,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:13:51,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 20 conjunts are in the unsatisfiable core
[2022-02-09 03:13:51,319 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:13:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:51,644 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:13:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:52,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807446630] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:13:52,187 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:13:52,187 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28
[2022-02-09 03:13:52,187 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713531954]
[2022-02-09 03:13:52,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:13:52,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2022-02-09 03:13:52,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:13:52,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2022-02-09 03:13:52,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812
[2022-02-09 03:13:52,188 INFO L87 Difference]: Start difference. First operand 75 states and 148 transitions. Second operand has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 28 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)
[2022-02-09 03:13:53,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:13:53,258 INFO L93 Difference]: Finished difference Result 169 states and 307 transitions.
[2022-02-09 03:13:53,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2022-02-09 03:13:53,259 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 28 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 21
[2022-02-09 03:13:53,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:13:53,260 INFO L225 Difference]: With dead ends: 169
[2022-02-09 03:13:53,260 INFO L226 Difference]: Without dead ends: 155
[2022-02-09 03:13:53,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=526, Invalid=2336, Unknown=0, NotChecked=0, Total=2862
[2022-02-09 03:13:53,261 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 242 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-09 03:13:53,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 160 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-09 03:13:53,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states.
[2022-02-09 03:13:53,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 74.
[2022-02-09 03:13:53,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.9726027397260273) internal successors, (144), 73 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 144 transitions.
[2022-02-09 03:13:53,265 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 144 transitions. Word has length 21
[2022-02-09 03:13:53,265 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:13:53,265 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 144 transitions.
[2022-02-09 03:13:53,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 28 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)
[2022-02-09 03:13:53,265 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 144 transitions.
[2022-02-09 03:13:53,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-02-09 03:13:53,266 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:13:53,266 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:13:53,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2022-02-09 03:13:53,466 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
[2022-02-09 03:13:53,467 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:13:53,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:13:53,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1644567295, now seen corresponding path program 12 times
[2022-02-09 03:13:53,467 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:13:53,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464836534]
[2022-02-09 03:13:53,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:13:53,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:13:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:53,625 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:53,627 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:13:53,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464836534]
[2022-02-09 03:13:53,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464836534] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:13:53,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418963043]
[2022-02-09 03:13:53,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-02-09 03:13:53,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:13:53,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:13:53,628 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)
[2022-02-09 03:13:53,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2022-02-09 03:13:53,652 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2022-02-09 03:13:53,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:13:53,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 20 conjunts are in the unsatisfiable core
[2022-02-09 03:13:53,654 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:13:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:53,966 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:13:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:54,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418963043] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:13:54,413 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:13:54,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28
[2022-02-09 03:13:54,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524298790]
[2022-02-09 03:13:54,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:13:54,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2022-02-09 03:13:54,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:13:54,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2022-02-09 03:13:54,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812
[2022-02-09 03:13:54,415 INFO L87 Difference]: Start difference. First operand 74 states and 144 transitions. Second operand has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 28 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)
[2022-02-09 03:13:55,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:13:55,155 INFO L93 Difference]: Finished difference Result 140 states and 249 transitions.
[2022-02-09 03:13:55,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2022-02-09 03:13:55,156 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 28 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 21
[2022-02-09 03:13:55,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:13:55,156 INFO L225 Difference]: With dead ends: 140
[2022-02-09 03:13:55,156 INFO L226 Difference]: Without dead ends: 126
[2022-02-09 03:13:55,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=367, Invalid=1795, Unknown=0, NotChecked=0, Total=2162
[2022-02-09 03:13:55,157 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 137 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-09 03:13:55,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 161 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-09 03:13:55,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states.
[2022-02-09 03:13:55,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 72.
[2022-02-09 03:13:55,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.943661971830986) internal successors, (138), 71 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)
[2022-02-09 03:13:55,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 138 transitions.
[2022-02-09 03:13:55,160 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 138 transitions. Word has length 21
[2022-02-09 03:13:55,160 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:13:55,160 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 138 transitions.
[2022-02-09 03:13:55,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 28 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)
[2022-02-09 03:13:55,160 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 138 transitions.
[2022-02-09 03:13:55,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-02-09 03:13:55,160 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:13:55,160 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:13:55,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2022-02-09 03:13:55,361 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
[2022-02-09 03:13:55,361 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:13:55,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:13:55,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1109337493, now seen corresponding path program 13 times
[2022-02-09 03:13:55,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:13:55,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459419411]
[2022-02-09 03:13:55,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:13:55,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:13:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:55,502 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:13:55,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459419411]
[2022-02-09 03:13:55,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459419411] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:13:55,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393664135]
[2022-02-09 03:13:55,502 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2022-02-09 03:13:55,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:13:55,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:13:55,504 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)
[2022-02-09 03:13:55,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2022-02-09 03:13:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:55,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 20 conjunts are in the unsatisfiable core
[2022-02-09 03:13:55,524 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:13:55,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:55,813 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:13:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:56,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393664135] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:13:56,175 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:13:56,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27
[2022-02-09 03:13:56,176 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369246176]
[2022-02-09 03:13:56,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:13:56,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-02-09 03:13:56,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:13:56,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-02-09 03:13:56,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756
[2022-02-09 03:13:56,181 INFO L87 Difference]: Start difference. First operand 72 states and 138 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 27 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)
[2022-02-09 03:13:56,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:13:56,633 INFO L93 Difference]: Finished difference Result 109 states and 197 transitions.
[2022-02-09 03:13:56,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2022-02-09 03:13:56,633 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 27 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 21
[2022-02-09 03:13:56,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:13:56,634 INFO L225 Difference]: With dead ends: 109
[2022-02-09 03:13:56,634 INFO L226 Difference]: Without dead ends: 77
[2022-02-09 03:13:56,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=340, Invalid=1730, Unknown=0, NotChecked=0, Total=2070
[2022-02-09 03:13:56,638 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 160 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-09 03:13:56,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 131 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-09 03:13:56,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2022-02-09 03:13:56,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64.
[2022-02-09 03:13:56,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.8888888888888888) internal successors, (119), 63 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)
[2022-02-09 03:13:56,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 119 transitions.
[2022-02-09 03:13:56,646 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 119 transitions. Word has length 21
[2022-02-09 03:13:56,646 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:13:56,646 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 119 transitions.
[2022-02-09 03:13:56,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 27 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)
[2022-02-09 03:13:56,646 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 119 transitions.
[2022-02-09 03:13:56,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-02-09 03:13:56,648 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:13:56,648 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:13:56,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2022-02-09 03:13:56,863 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
[2022-02-09 03:13:56,864 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:13:56,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:13:56,864 INFO L85 PathProgramCache]: Analyzing trace with hash 446728737, now seen corresponding path program 14 times
[2022-02-09 03:13:56,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:13:56,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532188582]
[2022-02-09 03:13:56,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:13:56,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:13:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:13:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:57,118 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:13:57,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532188582]
[2022-02-09 03:13:57,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532188582] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:13:57,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343199900]
[2022-02-09 03:13:57,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-09 03:13:57,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:13:57,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:13:57,125 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)
[2022-02-09 03:13:57,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2022-02-09 03:13:57,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-09 03:13:57,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:13:57,150 WARN L261 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-02-09 03:13:57,152 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:13:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:57,520 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:13:57,852 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:13:57,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343199900] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:13:57,852 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:13:57,852 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29
[2022-02-09 03:13:57,852 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409438913]
[2022-02-09 03:13:57,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:13:57,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2022-02-09 03:13:57,853 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:13:57,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2022-02-09 03:13:57,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870
[2022-02-09 03:13:57,853 INFO L87 Difference]: Start difference. First operand 64 states and 119 transitions. Second operand has 30 states, 30 states have (on average 2.0) internal successors, (60), 29 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:59,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:13:59,805 INFO L93 Difference]: Finished difference Result 292 states and 531 transitions.
[2022-02-09 03:13:59,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states.
[2022-02-09 03:13:59,806 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 29 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23
[2022-02-09 03:13:59,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:13:59,806 INFO L225 Difference]: With dead ends: 292
[2022-02-09 03:13:59,806 INFO L226 Difference]: Without dead ends: 204
[2022-02-09 03:13:59,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1137, Invalid=5343, Unknown=0, NotChecked=0, Total=6480
[2022-02-09 03:13:59,808 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 400 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-02-09 03:13:59,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 380 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-02-09 03:13:59,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states.
[2022-02-09 03:13:59,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 88.
[2022-02-09 03:13:59,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.0919540229885056) internal successors, (182), 87 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 182 transitions.
[2022-02-09 03:13:59,811 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 182 transitions. Word has length 23
[2022-02-09 03:13:59,811 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:13:59,811 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 182 transitions.
[2022-02-09 03:13:59,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 29 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:13:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 182 transitions.
[2022-02-09 03:13:59,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-02-09 03:13:59,812 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:13:59,812 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:13:59,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2022-02-09 03:14:00,028 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
[2022-02-09 03:14:00,029 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:00,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:00,029 INFO L85 PathProgramCache]: Analyzing trace with hash -422333271, now seen corresponding path program 15 times
[2022-02-09 03:14:00,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:00,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105246272]
[2022-02-09 03:14:00,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:00,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:00,208 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:00,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105246272]
[2022-02-09 03:14:00,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105246272] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:00,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020038414]
[2022-02-09 03:14:00,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-09 03:14:00,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:00,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:00,210 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)
[2022-02-09 03:14:00,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2022-02-09 03:14:00,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2022-02-09 03:14:00,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:14:00,235 WARN L261 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-02-09 03:14:00,236 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:00,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:00,588 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:00,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020038414] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:00,894 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:00,895 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29
[2022-02-09 03:14:00,896 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685529805]
[2022-02-09 03:14:00,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:00,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2022-02-09 03:14:00,896 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:00,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2022-02-09 03:14:00,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870
[2022-02-09 03:14:00,897 INFO L87 Difference]: Start difference. First operand 88 states and 182 transitions. Second operand has 30 states, 30 states have (on average 2.0) internal successors, (60), 29 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:02,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:02,693 INFO L93 Difference]: Finished difference Result 274 states and 485 transitions.
[2022-02-09 03:14:02,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states.
[2022-02-09 03:14:02,694 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 29 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23
[2022-02-09 03:14:02,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:02,695 INFO L225 Difference]: With dead ends: 274
[2022-02-09 03:14:02,695 INFO L226 Difference]: Without dead ends: 239
[2022-02-09 03:14:02,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1687 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1029, Invalid=4823, Unknown=0, NotChecked=0, Total=5852
[2022-02-09 03:14:02,697 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 306 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:02,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 334 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-09 03:14:02,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states.
[2022-02-09 03:14:02,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 90.
[2022-02-09 03:14:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.101123595505618) internal successors, (187), 89 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:02,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 187 transitions.
[2022-02-09 03:14:02,701 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 187 transitions. Word has length 23
[2022-02-09 03:14:02,701 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:02,701 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 187 transitions.
[2022-02-09 03:14:02,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 29 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:02,701 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 187 transitions.
[2022-02-09 03:14:02,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-02-09 03:14:02,702 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:02,702 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:02,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2022-02-09 03:14:02,902 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
[2022-02-09 03:14:02,903 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:02,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:02,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1687261131, now seen corresponding path program 16 times
[2022-02-09 03:14:02,903 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:02,903 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231899407]
[2022-02-09 03:14:02,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:02,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:03,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:03,150 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:03,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231899407]
[2022-02-09 03:14:03,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231899407] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:03,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543216605]
[2022-02-09 03:14:03,150 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-09 03:14:03,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:03,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:03,151 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)
[2022-02-09 03:14:03,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2022-02-09 03:14:03,175 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-09 03:14:03,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:14:03,176 WARN L261 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-02-09 03:14:03,177 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:03,488 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:03,489 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:03,757 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:03,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543216605] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:03,758 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:03,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29
[2022-02-09 03:14:03,758 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595132556]
[2022-02-09 03:14:03,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:03,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states
[2022-02-09 03:14:03,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:03,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2022-02-09 03:14:03,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=727, Unknown=0, NotChecked=0, Total=870
[2022-02-09 03:14:03,759 INFO L87 Difference]: Start difference. First operand 90 states and 187 transitions. Second operand has 30 states, 30 states have (on average 2.0) internal successors, (60), 29 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:05,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:05,656 INFO L93 Difference]: Finished difference Result 258 states and 448 transitions.
[2022-02-09 03:14:05,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2022-02-09 03:14:05,656 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 29 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23
[2022-02-09 03:14:05,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:05,657 INFO L225 Difference]: With dead ends: 258
[2022-02-09 03:14:05,657 INFO L226 Difference]: Without dead ends: 206
[2022-02-09 03:14:05,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1506 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=974, Invalid=4282, Unknown=0, NotChecked=0, Total=5256
[2022-02-09 03:14:05,659 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 368 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:05,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 295 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-02-09 03:14:05,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states.
[2022-02-09 03:14:05,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 99.
[2022-02-09 03:14:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 2.1122448979591835) internal successors, (207), 98 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:05,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 207 transitions.
[2022-02-09 03:14:05,664 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 207 transitions. Word has length 23
[2022-02-09 03:14:05,664 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:05,664 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 207 transitions.
[2022-02-09 03:14:05,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 29 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:05,664 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 207 transitions.
[2022-02-09 03:14:05,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-02-09 03:14:05,665 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:05,665 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:05,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0
[2022-02-09 03:14:05,877 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
[2022-02-09 03:14:05,878 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:05,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:05,878 INFO L85 PathProgramCache]: Analyzing trace with hash 98993111, now seen corresponding path program 17 times
[2022-02-09 03:14:05,878 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:05,878 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219059029]
[2022-02-09 03:14:05,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:05,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:06,045 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:06,046 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:06,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219059029]
[2022-02-09 03:14:06,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219059029] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:06,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508974787]
[2022-02-09 03:14:06,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-09 03:14:06,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:06,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:06,048 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)
[2022-02-09 03:14:06,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2022-02-09 03:14:06,073 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2022-02-09 03:14:06,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:14:06,074 WARN L261 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-02-09 03:14:06,075 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:06,335 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:06,336 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:06,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:06,626 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508974787] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:06,626 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:06,626 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 28
[2022-02-09 03:14:06,626 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117793955]
[2022-02-09 03:14:06,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:06,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2022-02-09 03:14:06,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:06,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2022-02-09 03:14:06,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812
[2022-02-09 03:14:06,627 INFO L87 Difference]: Start difference. First operand 99 states and 207 transitions. Second operand has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 28 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)
[2022-02-09 03:14:07,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:07,971 INFO L93 Difference]: Finished difference Result 221 states and 397 transitions.
[2022-02-09 03:14:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2022-02-09 03:14:07,972 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 28 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) Word has length 23
[2022-02-09 03:14:07,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:07,973 INFO L225 Difference]: With dead ends: 221
[2022-02-09 03:14:07,973 INFO L226 Difference]: Without dead ends: 200
[2022-02-09 03:14:07,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=884, Invalid=3538, Unknown=0, NotChecked=0, Total=4422
[2022-02-09 03:14:07,975 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 300 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:07,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 222 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-09 03:14:07,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states.
[2022-02-09 03:14:07,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 101.
[2022-02-09 03:14:07,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 2.16) internal successors, (216), 100 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:07,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 216 transitions.
[2022-02-09 03:14:07,979 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 216 transitions. Word has length 23
[2022-02-09 03:14:07,980 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:07,980 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 216 transitions.
[2022-02-09 03:14:07,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 28 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)
[2022-02-09 03:14:07,980 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 216 transitions.
[2022-02-09 03:14:07,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-02-09 03:14:07,980 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:07,980 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:08,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0
[2022-02-09 03:14:08,202 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
[2022-02-09 03:14:08,203 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:08,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:08,204 INFO L85 PathProgramCache]: Analyzing trace with hash 232463731, now seen corresponding path program 18 times
[2022-02-09 03:14:08,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:08,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068134759]
[2022-02-09 03:14:08,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:08,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:08,415 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:08,415 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:08,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068134759]
[2022-02-09 03:14:08,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068134759] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:08,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445306529]
[2022-02-09 03:14:08,416 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-02-09 03:14:08,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:08,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:08,432 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)
[2022-02-09 03:14:08,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2022-02-09 03:14:08,463 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2022-02-09 03:14:08,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:14:08,464 WARN L261 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-02-09 03:14:08,465 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:08,717 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:09,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:09,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445306529] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:09,006 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:09,006 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 28
[2022-02-09 03:14:09,006 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453658420]
[2022-02-09 03:14:09,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:09,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2022-02-09 03:14:09,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:09,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2022-02-09 03:14:09,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812
[2022-02-09 03:14:09,007 INFO L87 Difference]: Start difference. First operand 101 states and 216 transitions. Second operand has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:10,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:10,724 INFO L93 Difference]: Finished difference Result 272 states and 497 transitions.
[2022-02-09 03:14:10,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states.
[2022-02-09 03:14:10,725 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23
[2022-02-09 03:14:10,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:10,725 INFO L225 Difference]: With dead ends: 272
[2022-02-09 03:14:10,725 INFO L226 Difference]: Without dead ends: 219
[2022-02-09 03:14:10,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=909, Invalid=4493, Unknown=0, NotChecked=0, Total=5402
[2022-02-09 03:14:10,728 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 364 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:10,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 367 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-09 03:14:10,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states.
[2022-02-09 03:14:10,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 108.
[2022-02-09 03:14:10,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.205607476635514) internal successors, (236), 107 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:10,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 236 transitions.
[2022-02-09 03:14:10,735 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 236 transitions. Word has length 23
[2022-02-09 03:14:10,735 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:10,735 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 236 transitions.
[2022-02-09 03:14:10,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:10,735 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 236 transitions.
[2022-02-09 03:14:10,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-02-09 03:14:10,735 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:10,736 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:10,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0
[2022-02-09 03:14:10,951 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
[2022-02-09 03:14:10,951 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:10,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:10,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1032464129, now seen corresponding path program 19 times
[2022-02-09 03:14:10,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:10,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640079169]
[2022-02-09 03:14:10,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:10,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:11,143 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:11,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640079169]
[2022-02-09 03:14:11,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640079169] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:11,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17744904]
[2022-02-09 03:14:11,144 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2022-02-09 03:14:11,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:11,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:11,145 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)
[2022-02-09 03:14:11,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2022-02-09 03:14:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:11,174 WARN L261 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-02-09 03:14:11,175 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:11,472 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:11,472 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:11,854 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:11,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17744904] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:11,854 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:11,854 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 28
[2022-02-09 03:14:11,854 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418006490]
[2022-02-09 03:14:11,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:11,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2022-02-09 03:14:11,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:11,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2022-02-09 03:14:11,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812
[2022-02-09 03:14:11,866 INFO L87 Difference]: Start difference. First operand 108 states and 236 transitions. Second operand has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:13,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:13,398 INFO L93 Difference]: Finished difference Result 224 states and 405 transitions.
[2022-02-09 03:14:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2022-02-09 03:14:13,398 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23
[2022-02-09 03:14:13,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:13,399 INFO L225 Difference]: With dead ends: 224
[2022-02-09 03:14:13,400 INFO L226 Difference]: Without dead ends: 188
[2022-02-09 03:14:13,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=747, Invalid=3285, Unknown=0, NotChecked=0, Total=4032
[2022-02-09 03:14:13,401 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 380 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:13,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 230 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-09 03:14:13,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states.
[2022-02-09 03:14:13,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 103.
[2022-02-09 03:14:13,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 2.1176470588235294) internal successors, (216), 102 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:13,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 216 transitions.
[2022-02-09 03:14:13,406 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 216 transitions. Word has length 23
[2022-02-09 03:14:13,406 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:13,406 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 216 transitions.
[2022-02-09 03:14:13,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:13,406 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 216 transitions.
[2022-02-09 03:14:13,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-02-09 03:14:13,408 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:13,408 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:13,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2022-02-09 03:14:13,627 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
[2022-02-09 03:14:13,627 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:13,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:13,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1847881701, now seen corresponding path program 20 times
[2022-02-09 03:14:13,628 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:13,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139574031]
[2022-02-09 03:14:13,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:13,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:13,820 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:13,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139574031]
[2022-02-09 03:14:13,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139574031] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:13,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649626601]
[2022-02-09 03:14:13,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-09 03:14:13,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:13,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:13,822 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)
[2022-02-09 03:14:13,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2022-02-09 03:14:13,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-09 03:14:13,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:14:13,854 WARN L261 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-02-09 03:14:13,855 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:14,183 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-09 03:14:14,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649626601] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:14,502 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:14,502 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 27
[2022-02-09 03:14:14,502 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819312247]
[2022-02-09 03:14:14,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:14,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-02-09 03:14:14,502 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:14,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-02-09 03:14:14,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756
[2022-02-09 03:14:14,503 INFO L87 Difference]: Start difference. First operand 103 states and 216 transitions. Second operand has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 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)
[2022-02-09 03:14:15,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:15,700 INFO L93 Difference]: Finished difference Result 244 states and 464 transitions.
[2022-02-09 03:14:15,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2022-02-09 03:14:15,700 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 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) Word has length 23
[2022-02-09 03:14:15,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:15,701 INFO L225 Difference]: With dead ends: 244
[2022-02-09 03:14:15,701 INFO L226 Difference]: Without dead ends: 223
[2022-02-09 03:14:15,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=626, Invalid=2566, Unknown=0, NotChecked=0, Total=3192
[2022-02-09 03:14:15,702 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 236 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:15,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 249 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-09 03:14:15,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states.
[2022-02-09 03:14:15,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 116.
[2022-02-09 03:14:15,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.130434782608696) internal successors, (245), 115 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:15,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 245 transitions.
[2022-02-09 03:14:15,705 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 245 transitions. Word has length 23
[2022-02-09 03:14:15,705 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:15,705 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 245 transitions.
[2022-02-09 03:14:15,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 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)
[2022-02-09 03:14:15,706 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 245 transitions.
[2022-02-09 03:14:15,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-02-09 03:14:15,706 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:15,706 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:15,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0
[2022-02-09 03:14:15,915 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
[2022-02-09 03:14:15,915 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:15,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:15,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1684529905, now seen corresponding path program 21 times
[2022-02-09 03:14:15,916 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:15,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601816587]
[2022-02-09 03:14:15,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:15,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:16,102 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:16,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601816587]
[2022-02-09 03:14:16,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601816587] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:16,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010161598]
[2022-02-09 03:14:16,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-09 03:14:16,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:16,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:16,103 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)
[2022-02-09 03:14:16,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2022-02-09 03:14:16,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2022-02-09 03:14:16,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:14:16,126 WARN L261 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-02-09 03:14:16,126 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:16,473 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:16,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010161598] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:16,869 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:16,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 27
[2022-02-09 03:14:16,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607500660]
[2022-02-09 03:14:16,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:16,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-02-09 03:14:16,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:16,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-02-09 03:14:16,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756
[2022-02-09 03:14:16,870 INFO L87 Difference]: Start difference. First operand 116 states and 245 transitions. Second operand has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 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)
[2022-02-09 03:14:18,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:18,913 INFO L93 Difference]: Finished difference Result 262 states and 479 transitions.
[2022-02-09 03:14:18,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2022-02-09 03:14:18,914 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 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) Word has length 23
[2022-02-09 03:14:18,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:18,915 INFO L225 Difference]: With dead ends: 262
[2022-02-09 03:14:18,915 INFO L226 Difference]: Without dead ends: 229
[2022-02-09 03:14:18,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=889, Invalid=3667, Unknown=0, NotChecked=0, Total=4556
[2022-02-09 03:14:18,917 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 399 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:18,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 234 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-09 03:14:18,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states.
[2022-02-09 03:14:18,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 99.
[2022-02-09 03:14:18,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 2.0306122448979593) internal successors, (199), 98 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:18,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 199 transitions.
[2022-02-09 03:14:18,929 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 199 transitions. Word has length 23
[2022-02-09 03:14:18,929 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:18,929 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 199 transitions.
[2022-02-09 03:14:18,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 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)
[2022-02-09 03:14:18,930 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 199 transitions.
[2022-02-09 03:14:18,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-02-09 03:14:18,930 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:18,930 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:18,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2022-02-09 03:14:19,151 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
[2022-02-09 03:14:19,152 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:19,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:19,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1752075113, now seen corresponding path program 22 times
[2022-02-09 03:14:19,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:19,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002374471]
[2022-02-09 03:14:19,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:19,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:19,349 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:19,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002374471]
[2022-02-09 03:14:19,349 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002374471] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:19,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021033859]
[2022-02-09 03:14:19,349 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-09 03:14:19,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:19,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:19,350 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)
[2022-02-09 03:14:19,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2022-02-09 03:14:19,375 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-09 03:14:19,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:14:19,376 WARN L261 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-02-09 03:14:19,377 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:19,703 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:20,109 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-09 03:14:20,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021033859] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:20,109 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:20,109 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 27
[2022-02-09 03:14:20,109 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854062002]
[2022-02-09 03:14:20,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:20,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-02-09 03:14:20,110 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:20,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-02-09 03:14:20,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756
[2022-02-09 03:14:20,110 INFO L87 Difference]: Start difference. First operand 99 states and 199 transitions. Second operand has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 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)
[2022-02-09 03:14:21,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:21,160 INFO L93 Difference]: Finished difference Result 155 states and 303 transitions.
[2022-02-09 03:14:21,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2022-02-09 03:14:21,160 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 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) Word has length 23
[2022-02-09 03:14:21,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:21,161 INFO L225 Difference]: With dead ends: 155
[2022-02-09 03:14:21,161 INFO L226 Difference]: Without dead ends: 141
[2022-02-09 03:14:21,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=542, Invalid=2214, Unknown=0, NotChecked=0, Total=2756
[2022-02-09 03:14:21,162 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 247 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:21,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 100 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-09 03:14:21,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states.
[2022-02-09 03:14:21,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 80.
[2022-02-09 03:14:21,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.9620253164556962) internal successors, (155), 79 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:21,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 155 transitions.
[2022-02-09 03:14:21,165 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 155 transitions. Word has length 23
[2022-02-09 03:14:21,165 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:21,165 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 155 transitions.
[2022-02-09 03:14:21,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 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)
[2022-02-09 03:14:21,165 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 155 transitions.
[2022-02-09 03:14:21,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2022-02-09 03:14:21,165 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:21,165 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:21,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2022-02-09 03:14:21,365 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
[2022-02-09 03:14:21,366 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:21,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:21,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1683696561, now seen corresponding path program 23 times
[2022-02-09 03:14:21,366 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:21,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719669485]
[2022-02-09 03:14:21,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:21,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:21,574 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:21,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719669485]
[2022-02-09 03:14:21,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719669485] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:21,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872889482]
[2022-02-09 03:14:21,574 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-09 03:14:21,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:21,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:21,575 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)
[2022-02-09 03:14:21,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2022-02-09 03:14:21,601 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2022-02-09 03:14:21,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:14:21,602 WARN L261 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-02-09 03:14:21,602 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:22,017 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:22,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872889482] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:22,443 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:22,443 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33
[2022-02-09 03:14:22,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225004883]
[2022-02-09 03:14:22,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:22,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2022-02-09 03:14:22,444 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:22,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2022-02-09 03:14:22,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=929, Unknown=0, NotChecked=0, Total=1122
[2022-02-09 03:14:22,445 INFO L87 Difference]: Start difference. First operand 80 states and 155 transitions. Second operand has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 33 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)
[2022-02-09 03:14:24,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:24,384 INFO L93 Difference]: Finished difference Result 223 states and 390 transitions.
[2022-02-09 03:14:24,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2022-02-09 03:14:24,385 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 33 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 25
[2022-02-09 03:14:24,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:24,385 INFO L225 Difference]: With dead ends: 223
[2022-02-09 03:14:24,386 INFO L226 Difference]: Without dead ends: 174
[2022-02-09 03:14:24,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1867 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1141, Invalid=5339, Unknown=0, NotChecked=0, Total=6480
[2022-02-09 03:14:24,387 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 280 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:24,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 314 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-02-09 03:14:24,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states.
[2022-02-09 03:14:24,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 87.
[2022-02-09 03:14:24,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.9883720930232558) internal successors, (171), 86 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:24,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 171 transitions.
[2022-02-09 03:14:24,406 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 171 transitions. Word has length 25
[2022-02-09 03:14:24,406 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:24,406 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 171 transitions.
[2022-02-09 03:14:24,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 33 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)
[2022-02-09 03:14:24,406 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 171 transitions.
[2022-02-09 03:14:24,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2022-02-09 03:14:24,407 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:24,407 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:24,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0
[2022-02-09 03:14:24,623 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
[2022-02-09 03:14:24,623 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:24,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:24,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1961201765, now seen corresponding path program 24 times
[2022-02-09 03:14:24,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:24,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229122991]
[2022-02-09 03:14:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:24,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:24,783 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:24,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229122991]
[2022-02-09 03:14:24,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229122991] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:24,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326219045]
[2022-02-09 03:14:24,783 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-02-09 03:14:24,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:24,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:24,792 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)
[2022-02-09 03:14:24,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2022-02-09 03:14:24,815 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2022-02-09 03:14:24,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:14:24,815 WARN L261 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-02-09 03:14:24,816 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:25,216 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:25,217 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:25,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326219045] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:25,628 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:25,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33
[2022-02-09 03:14:25,629 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617821933]
[2022-02-09 03:14:25,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:25,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2022-02-09 03:14:25,629 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:25,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2022-02-09 03:14:25,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=924, Unknown=0, NotChecked=0, Total=1122
[2022-02-09 03:14:25,630 INFO L87 Difference]: Start difference. First operand 87 states and 171 transitions. Second operand has 34 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:28,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:28,126 INFO L93 Difference]: Finished difference Result 345 states and 625 transitions.
[2022-02-09 03:14:28,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states.
[2022-02-09 03:14:28,127 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25
[2022-02-09 03:14:28,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:28,128 INFO L225 Difference]: With dead ends: 345
[2022-02-09 03:14:28,128 INFO L226 Difference]: Without dead ends: 317
[2022-02-09 03:14:28,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3616 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1974, Invalid=8738, Unknown=0, NotChecked=0, Total=10712
[2022-02-09 03:14:28,129 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 408 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:28,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 233 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-09 03:14:28,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states.
[2022-02-09 03:14:28,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 128.
[2022-02-09 03:14:28,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.1338582677165356) internal successors, (271), 127 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 271 transitions.
[2022-02-09 03:14:28,134 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 271 transitions. Word has length 25
[2022-02-09 03:14:28,134 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:28,134 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 271 transitions.
[2022-02-09 03:14:28,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:28,139 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 271 transitions.
[2022-02-09 03:14:28,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2022-02-09 03:14:28,139 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:28,139 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:28,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0
[2022-02-09 03:14:28,356 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
[2022-02-09 03:14:28,356 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:28,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:28,356 INFO L85 PathProgramCache]: Analyzing trace with hash 272905729, now seen corresponding path program 25 times
[2022-02-09 03:14:28,356 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:28,356 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11204681]
[2022-02-09 03:14:28,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:28,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:28,529 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:28,529 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:28,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11204681]
[2022-02-09 03:14:28,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11204681] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:28,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687904007]
[2022-02-09 03:14:28,530 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2022-02-09 03:14:28,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:28,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:28,531 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)
[2022-02-09 03:14:28,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2022-02-09 03:14:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:28,555 WARN L261 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-02-09 03:14:28,556 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:28,915 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:28,915 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:29,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687904007] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:29,356 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:29,356 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33
[2022-02-09 03:14:29,356 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018750898]
[2022-02-09 03:14:29,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:29,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2022-02-09 03:14:29,356 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:29,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2022-02-09 03:14:29,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122
[2022-02-09 03:14:29,357 INFO L87 Difference]: Start difference. First operand 128 states and 271 transitions. Second operand has 34 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:31,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:31,213 INFO L93 Difference]: Finished difference Result 232 states and 448 transitions.
[2022-02-09 03:14:31,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states.
[2022-02-09 03:14:31,213 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25
[2022-02-09 03:14:31,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:31,214 INFO L225 Difference]: With dead ends: 232
[2022-02-09 03:14:31,215 INFO L226 Difference]: Without dead ends: 211
[2022-02-09 03:14:31,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2174 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1226, Invalid=5914, Unknown=0, NotChecked=0, Total=7140
[2022-02-09 03:14:31,217 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 248 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:31,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 303 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-09 03:14:31,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states.
[2022-02-09 03:14:31,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 140.
[2022-02-09 03:14:31,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.1366906474820144) internal successors, (297), 139 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:31,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 297 transitions.
[2022-02-09 03:14:31,221 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 297 transitions. Word has length 25
[2022-02-09 03:14:31,222 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:31,222 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 297 transitions.
[2022-02-09 03:14:31,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.911764705882353) internal successors, (65), 33 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:31,222 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 297 transitions.
[2022-02-09 03:14:31,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2022-02-09 03:14:31,222 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:31,222 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:31,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0
[2022-02-09 03:14:31,435 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
[2022-02-09 03:14:31,436 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:31,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:31,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1266191283, now seen corresponding path program 26 times
[2022-02-09 03:14:31,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:31,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070812186]
[2022-02-09 03:14:31,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:31,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:31,613 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:31,614 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:31,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070812186]
[2022-02-09 03:14:31,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070812186] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:31,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311272425]
[2022-02-09 03:14:31,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-09 03:14:31,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:31,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:31,636 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)
[2022-02-09 03:14:31,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2022-02-09 03:14:31,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-09 03:14:31,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:14:31,659 WARN L261 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-02-09 03:14:31,660 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:32,134 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:32,134 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:32,523 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:32,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311272425] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:32,523 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:32,523 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 31
[2022-02-09 03:14:32,523 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177085082]
[2022-02-09 03:14:32,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:32,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2022-02-09 03:14:32,524 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:32,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2022-02-09 03:14:32,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992
[2022-02-09 03:14:32,525 INFO L87 Difference]: Start difference. First operand 140 states and 297 transitions. Second operand has 32 states, 32 states have (on average 2.03125) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:34,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:34,899 INFO L93 Difference]: Finished difference Result 368 states and 716 transitions.
[2022-02-09 03:14:34,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states.
[2022-02-09 03:14:34,900 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.03125) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25
[2022-02-09 03:14:34,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:34,901 INFO L225 Difference]: With dead ends: 368
[2022-02-09 03:14:34,901 INFO L226 Difference]: Without dead ends: 347
[2022-02-09 03:14:34,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2685 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1367, Invalid=7189, Unknown=0, NotChecked=0, Total=8556
[2022-02-09 03:14:34,902 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 314 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:34,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 263 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-02-09 03:14:34,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states.
[2022-02-09 03:14:34,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 186.
[2022-02-09 03:14:34,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.151351351351351) internal successors, (398), 185 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:34,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 398 transitions.
[2022-02-09 03:14:34,905 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 398 transitions. Word has length 25
[2022-02-09 03:14:34,905 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:34,905 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 398 transitions.
[2022-02-09 03:14:34,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.03125) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:34,906 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 398 transitions.
[2022-02-09 03:14:34,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2022-02-09 03:14:34,906 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:34,906 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:34,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0
[2022-02-09 03:14:35,114 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
[2022-02-09 03:14:35,115 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:35,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:35,115 INFO L85 PathProgramCache]: Analyzing trace with hash 967916211, now seen corresponding path program 27 times
[2022-02-09 03:14:35,115 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:35,115 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722056011]
[2022-02-09 03:14:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:35,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:35,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:35,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722056011]
[2022-02-09 03:14:35,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722056011] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:35,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438154008]
[2022-02-09 03:14:35,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-09 03:14:35,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:35,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:35,247 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)
[2022-02-09 03:14:35,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2022-02-09 03:14:35,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2022-02-09 03:14:35,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:14:35,268 WARN L261 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 28 conjunts are in the unsatisfiable core
[2022-02-09 03:14:35,270 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:35,750 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:35,750 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:36,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438154008] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:36,166 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:36,166 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32
[2022-02-09 03:14:36,166 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155644665]
[2022-02-09 03:14:36,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:36,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states
[2022-02-09 03:14:36,166 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:36,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2022-02-09 03:14:36,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056
[2022-02-09 03:14:36,167 INFO L87 Difference]: Start difference. First operand 186 states and 398 transitions. Second operand has 33 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 32 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:38,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:38,023 INFO L93 Difference]: Finished difference Result 414 states and 805 transitions.
[2022-02-09 03:14:38,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2022-02-09 03:14:38,023 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 32 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25
[2022-02-09 03:14:38,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:38,024 INFO L225 Difference]: With dead ends: 414
[2022-02-09 03:14:38,024 INFO L226 Difference]: Without dead ends: 379
[2022-02-09 03:14:38,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2492 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1118, Invalid=7254, Unknown=0, NotChecked=0, Total=8372
[2022-02-09 03:14:38,025 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 314 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:38,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 280 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-09 03:14:38,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states.
[2022-02-09 03:14:38,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 215.
[2022-02-09 03:14:38,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 2.2009345794392523) internal successors, (471), 214 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:38,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 471 transitions.
[2022-02-09 03:14:38,030 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 471 transitions. Word has length 25
[2022-02-09 03:14:38,030 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:38,030 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 471 transitions.
[2022-02-09 03:14:38,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 32 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:38,030 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 471 transitions.
[2022-02-09 03:14:38,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2022-02-09 03:14:38,030 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:38,030 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:38,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2022-02-09 03:14:38,247 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
[2022-02-09 03:14:38,247 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:38,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:38,247 INFO L85 PathProgramCache]: Analyzing trace with hash -580006123, now seen corresponding path program 28 times
[2022-02-09 03:14:38,247 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:38,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598803969]
[2022-02-09 03:14:38,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:38,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:38,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:38,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598803969]
[2022-02-09 03:14:38,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598803969] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:38,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72754143]
[2022-02-09 03:14:38,375 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-09 03:14:38,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:38,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:38,377 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)
[2022-02-09 03:14:38,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2022-02-09 03:14:38,412 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-09 03:14:38,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:14:38,413 WARN L261 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-02-09 03:14:38,414 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:38,690 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:38,691 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:38,914 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:38,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72754143] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:38,914 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:38,914 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 30
[2022-02-09 03:14:38,914 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846835795]
[2022-02-09 03:14:38,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:38,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states
[2022-02-09 03:14:38,915 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:38,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2022-02-09 03:14:38,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930
[2022-02-09 03:14:38,915 INFO L87 Difference]: Start difference. First operand 215 states and 471 transitions. Second operand has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:40,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:40,441 INFO L93 Difference]: Finished difference Result 372 states and 748 transitions.
[2022-02-09 03:14:40,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states.
[2022-02-09 03:14:40,442 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25
[2022-02-09 03:14:40,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:40,443 INFO L225 Difference]: With dead ends: 372
[2022-02-09 03:14:40,443 INFO L226 Difference]: Without dead ends: 305
[2022-02-09 03:14:40,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1102, Invalid=5704, Unknown=0, NotChecked=0, Total=6806
[2022-02-09 03:14:40,447 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 293 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:40,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 227 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-09 03:14:40,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states.
[2022-02-09 03:14:40,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 215.
[2022-02-09 03:14:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 2.107476635514019) internal successors, (451), 214 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:40,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 451 transitions.
[2022-02-09 03:14:40,452 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 451 transitions. Word has length 25
[2022-02-09 03:14:40,452 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:40,453 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 451 transitions.
[2022-02-09 03:14:40,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:40,453 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 451 transitions.
[2022-02-09 03:14:40,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2022-02-09 03:14:40,453 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:40,453 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:40,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0
[2022-02-09 03:14:40,670 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
[2022-02-09 03:14:40,670 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:40,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:40,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1977328831, now seen corresponding path program 29 times
[2022-02-09 03:14:40,671 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:40,671 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85337763]
[2022-02-09 03:14:40,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:40,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:40,825 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:40,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85337763]
[2022-02-09 03:14:40,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85337763] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:40,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544142973]
[2022-02-09 03:14:40,825 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-09 03:14:40,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:40,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:40,826 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)
[2022-02-09 03:14:40,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2022-02-09 03:14:40,851 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2022-02-09 03:14:40,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:14:40,852 WARN L261 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-02-09 03:14:40,853 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:41,164 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-09 03:14:41,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544142973] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:41,577 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:41,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 31
[2022-02-09 03:14:41,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30089357]
[2022-02-09 03:14:41,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:41,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2022-02-09 03:14:41,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:41,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2022-02-09 03:14:41,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992
[2022-02-09 03:14:41,578 INFO L87 Difference]: Start difference. First operand 215 states and 451 transitions. Second operand has 32 states, 32 states have (on average 2.03125) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:43,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:43,692 INFO L93 Difference]: Finished difference Result 571 states and 1134 transitions.
[2022-02-09 03:14:43,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2022-02-09 03:14:43,692 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.03125) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25
[2022-02-09 03:14:43,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:43,695 INFO L225 Difference]: With dead ends: 571
[2022-02-09 03:14:43,695 INFO L226 Difference]: Without dead ends: 526
[2022-02-09 03:14:43,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1626 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=850, Invalid=4700, Unknown=0, NotChecked=0, Total=5550
[2022-02-09 03:14:43,696 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 249 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:43,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 181 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-09 03:14:43,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states.
[2022-02-09 03:14:43,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 374.
[2022-02-09 03:14:43,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 2.1796246648793565) internal successors, (813), 373 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:43,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 813 transitions.
[2022-02-09 03:14:43,706 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 813 transitions. Word has length 25
[2022-02-09 03:14:43,706 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:43,706 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 813 transitions.
[2022-02-09 03:14:43,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.03125) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:43,707 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 813 transitions.
[2022-02-09 03:14:43,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2022-02-09 03:14:43,708 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:43,708 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:43,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0
[2022-02-09 03:14:43,931 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
[2022-02-09 03:14:43,932 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:43,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:43,932 INFO L85 PathProgramCache]: Analyzing trace with hash 769716131, now seen corresponding path program 30 times
[2022-02-09 03:14:43,932 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:43,932 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847106013]
[2022-02-09 03:14:43,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:43,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:44,073 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:44,073 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:44,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847106013]
[2022-02-09 03:14:44,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847106013] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:44,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486486572]
[2022-02-09 03:14:44,073 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-02-09 03:14:44,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:44,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:44,084 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)
[2022-02-09 03:14:44,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2022-02-09 03:14:44,113 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2022-02-09 03:14:44,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:14:44,114 WARN L261 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-02-09 03:14:44,115 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:44,436 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-09 03:14:44,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486486572] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:44,888 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:44,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 30
[2022-02-09 03:14:44,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063525220]
[2022-02-09 03:14:44,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:44,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states
[2022-02-09 03:14:44,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:44,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2022-02-09 03:14:44,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930
[2022-02-09 03:14:44,889 INFO L87 Difference]: Start difference. First operand 374 states and 813 transitions. Second operand has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:47,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:47,326 INFO L93 Difference]: Finished difference Result 655 states and 1318 transitions.
[2022-02-09 03:14:47,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states.
[2022-02-09 03:14:47,327 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25
[2022-02-09 03:14:47,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:47,328 INFO L225 Difference]: With dead ends: 655
[2022-02-09 03:14:47,328 INFO L226 Difference]: Without dead ends: 565
[2022-02-09 03:14:47,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2693 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1351, Invalid=7205, Unknown=0, NotChecked=0, Total=8556
[2022-02-09 03:14:47,329 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 277 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:47,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 230 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-02-09 03:14:47,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states.
[2022-02-09 03:14:47,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 356.
[2022-02-09 03:14:47,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.112676056338028) internal successors, (750), 355 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:47,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 750 transitions.
[2022-02-09 03:14:47,336 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 750 transitions. Word has length 25
[2022-02-09 03:14:47,336 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:47,336 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 750 transitions.
[2022-02-09 03:14:47,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 30 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:47,337 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 750 transitions.
[2022-02-09 03:14:47,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2022-02-09 03:14:47,337 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:47,337 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:47,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0
[2022-02-09 03:14:47,551 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
[2022-02-09 03:14:47,551 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:47,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:47,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1177671531, now seen corresponding path program 31 times
[2022-02-09 03:14:47,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:47,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377825119]
[2022-02-09 03:14:47,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:47,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-09 03:14:47,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:47,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377825119]
[2022-02-09 03:14:47,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377825119] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:47,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249857011]
[2022-02-09 03:14:47,733 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2022-02-09 03:14:47,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:47,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:47,734 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)
[2022-02-09 03:14:47,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2022-02-09 03:14:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:47,768 WARN L261 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-02-09 03:14:47,769 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:48,206 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:48,674 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-09 03:14:48,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249857011] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:48,674 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:48,675 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 31
[2022-02-09 03:14:48,675 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431867080]
[2022-02-09 03:14:48,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:48,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2022-02-09 03:14:48,675 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:48,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2022-02-09 03:14:48,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992
[2022-02-09 03:14:48,676 INFO L87 Difference]: Start difference. First operand 356 states and 750 transitions. Second operand has 32 states, 32 states have (on average 2.0) internal successors, (64), 31 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)
[2022-02-09 03:14:50,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:50,770 INFO L93 Difference]: Finished difference Result 537 states and 1059 transitions.
[2022-02-09 03:14:50,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states.
[2022-02-09 03:14:50,770 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0) internal successors, (64), 31 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 25
[2022-02-09 03:14:50,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:50,772 INFO L225 Difference]: With dead ends: 537
[2022-02-09 03:14:50,772 INFO L226 Difference]: Without dead ends: 483
[2022-02-09 03:14:50,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2112 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1177, Invalid=5629, Unknown=0, NotChecked=0, Total=6806
[2022-02-09 03:14:50,773 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 258 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:50,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 207 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-09 03:14:50,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states.
[2022-02-09 03:14:50,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 352.
[2022-02-09 03:14:50,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 2.1054131054131053) internal successors, (739), 351 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:50,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 739 transitions.
[2022-02-09 03:14:50,782 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 739 transitions. Word has length 25
[2022-02-09 03:14:50,782 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:50,782 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 739 transitions.
[2022-02-09 03:14:50,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.0) internal successors, (64), 31 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)
[2022-02-09 03:14:50,783 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 739 transitions.
[2022-02-09 03:14:50,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2022-02-09 03:14:50,784 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:50,784 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:50,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0
[2022-02-09 03:14:51,001 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
[2022-02-09 03:14:51,002 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:51,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:51,002 INFO L85 PathProgramCache]: Analyzing trace with hash -376052675, now seen corresponding path program 32 times
[2022-02-09 03:14:51,002 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:51,003 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861736400]
[2022-02-09 03:14:51,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:51,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:51,178 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:51,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861736400]
[2022-02-09 03:14:51,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861736400] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:51,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793821557]
[2022-02-09 03:14:51,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-09 03:14:51,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:51,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:51,191 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)
[2022-02-09 03:14:51,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2022-02-09 03:14:51,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-09 03:14:51,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:14:51,227 WARN L261 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 33 conjunts are in the unsatisfiable core
[2022-02-09 03:14:51,227 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:51,536 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:51,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793821557] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:51,868 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:51,868 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 34
[2022-02-09 03:14:51,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568877000]
[2022-02-09 03:14:51,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:51,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states
[2022-02-09 03:14:51,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:51,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2022-02-09 03:14:51,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1008, Unknown=0, NotChecked=0, Total=1190
[2022-02-09 03:14:51,870 INFO L87 Difference]: Start difference. First operand 352 states and 739 transitions. Second operand has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:54,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:54,068 INFO L93 Difference]: Finished difference Result 615 states and 1218 transitions.
[2022-02-09 03:14:54,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states.
[2022-02-09 03:14:54,068 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27
[2022-02-09 03:14:54,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:54,070 INFO L225 Difference]: With dead ends: 615
[2022-02-09 03:14:54,070 INFO L226 Difference]: Without dead ends: 567
[2022-02-09 03:14:54,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2894 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1517, Invalid=7989, Unknown=0, NotChecked=0, Total=9506
[2022-02-09 03:14:54,072 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 360 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:54,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 256 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-02-09 03:14:54,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states.
[2022-02-09 03:14:54,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 325.
[2022-02-09 03:14:54,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 2.0833333333333335) internal successors, (675), 324 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:54,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 675 transitions.
[2022-02-09 03:14:54,094 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 675 transitions. Word has length 27
[2022-02-09 03:14:54,094 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:54,094 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 675 transitions.
[2022-02-09 03:14:54,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:54,094 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 675 transitions.
[2022-02-09 03:14:54,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2022-02-09 03:14:54,095 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:54,095 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:54,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0
[2022-02-09 03:14:54,326 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
[2022-02-09 03:14:54,327 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:54,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:54,327 INFO L85 PathProgramCache]: Analyzing trace with hash 927667109, now seen corresponding path program 33 times
[2022-02-09 03:14:54,327 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:54,327 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120429994]
[2022-02-09 03:14:54,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:54,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:54,525 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:54,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120429994]
[2022-02-09 03:14:54,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120429994] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:54,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817337789]
[2022-02-09 03:14:54,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-09 03:14:54,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:54,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:54,540 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)
[2022-02-09 03:14:54,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2022-02-09 03:14:54,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2022-02-09 03:14:54,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:14:54,582 WARN L261 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 33 conjunts are in the unsatisfiable core
[2022-02-09 03:14:54,583 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:54,944 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:54,945 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:55,314 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-09 03:14:55,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817337789] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:55,315 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:55,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 34
[2022-02-09 03:14:55,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109976853]
[2022-02-09 03:14:55,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:55,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states
[2022-02-09 03:14:55,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:55,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2022-02-09 03:14:55,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190
[2022-02-09 03:14:55,316 INFO L87 Difference]: Start difference. First operand 325 states and 675 transitions. Second operand has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:56,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:56,621 INFO L93 Difference]: Finished difference Result 497 states and 992 transitions.
[2022-02-09 03:14:56,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2022-02-09 03:14:56,632 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27
[2022-02-09 03:14:56,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:56,634 INFO L225 Difference]: With dead ends: 497
[2022-02-09 03:14:56,634 INFO L226 Difference]: Without dead ends: 479
[2022-02-09 03:14:56,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1862 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1122, Invalid=5198, Unknown=0, NotChecked=0, Total=6320
[2022-02-09 03:14:56,636 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 351 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:56,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 119 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-09 03:14:56,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states.
[2022-02-09 03:14:56,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 175.
[2022-02-09 03:14:56,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 2.0632183908045976) internal successors, (359), 174 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 359 transitions.
[2022-02-09 03:14:56,642 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 359 transitions. Word has length 27
[2022-02-09 03:14:56,642 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:56,642 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 359 transitions.
[2022-02-09 03:14:56,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:56,642 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 359 transitions.
[2022-02-09 03:14:56,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2022-02-09 03:14:56,643 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:56,643 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:56,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0
[2022-02-09 03:14:56,851 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
[2022-02-09 03:14:56,851 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:56,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:56,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1133192693, now seen corresponding path program 34 times
[2022-02-09 03:14:56,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:56,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425205875]
[2022-02-09 03:14:56,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:56,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:57,019 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:57,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425205875]
[2022-02-09 03:14:57,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425205875] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:57,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230454954]
[2022-02-09 03:14:57,019 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-09 03:14:57,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:57,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:57,022 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)
[2022-02-09 03:14:57,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process
[2022-02-09 03:14:57,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-09 03:14:57,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:14:57,049 WARN L261 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 33 conjunts are in the unsatisfiable core
[2022-02-09 03:14:57,049 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:14:57,458 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:57,458 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:14:57,886 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-02-09 03:14:57,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230454954] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:14:57,887 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:14:57,887 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 34
[2022-02-09 03:14:57,887 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895561062]
[2022-02-09 03:14:57,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:14:57,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states
[2022-02-09 03:14:57,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:14:57,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2022-02-09 03:14:57,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1014, Unknown=0, NotChecked=0, Total=1190
[2022-02-09 03:14:57,889 INFO L87 Difference]: Start difference. First operand 175 states and 359 transitions. Second operand has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:58,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:14:58,978 INFO L93 Difference]: Finished difference Result 296 states and 581 transitions.
[2022-02-09 03:14:58,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2022-02-09 03:14:58,979 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27
[2022-02-09 03:14:58,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:14:58,980 INFO L225 Difference]: With dead ends: 296
[2022-02-09 03:14:58,980 INFO L226 Difference]: Without dead ends: 272
[2022-02-09 03:14:58,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1367 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=817, Invalid=4013, Unknown=0, NotChecked=0, Total=4830
[2022-02-09 03:14:58,981 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 267 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-02-09 03:14:58,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 109 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-02-09 03:14:58,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states.
[2022-02-09 03:14:58,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 101.
[2022-02-09 03:14:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.92) internal successors, (192), 100 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 192 transitions.
[2022-02-09 03:14:58,990 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 192 transitions. Word has length 27
[2022-02-09 03:14:58,990 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:14:58,990 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 192 transitions.
[2022-02-09 03:14:58,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:14:58,990 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 192 transitions.
[2022-02-09 03:14:58,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2022-02-09 03:14:58,990 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 03:14:58,990 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 03:14:59,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0
[2022-02-09 03:14:59,206 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
[2022-02-09 03:14:59,206 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-09 03:14:59,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 03:14:59,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1533688995, now seen corresponding path program 35 times
[2022-02-09 03:14:59,207 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 03:14:59,207 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330733571]
[2022-02-09 03:14:59,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 03:14:59,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 03:14:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 03:14:59,405 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:14:59,406 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 03:14:59,406 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330733571]
[2022-02-09 03:14:59,406 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330733571] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-09 03:14:59,406 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847083613]
[2022-02-09 03:14:59,406 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-02-09 03:14:59,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-09 03:14:59,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 03:14:59,407 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)
[2022-02-09 03:14:59,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2022-02-09 03:14:59,441 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2022-02-09 03:14:59,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-09 03:14:59,442 WARN L261 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 41 conjunts are in the unsatisfiable core
[2022-02-09 03:14:59,442 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-09 03:15:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 03:15:00,002 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-09 03:15:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-02-09 03:15:00,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847083613] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-09 03:15:00,530 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-02-09 03:15:00,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 14] total 37
[2022-02-09 03:15:00,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710664359]
[2022-02-09 03:15:00,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-02-09 03:15:00,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states
[2022-02-09 03:15:00,531 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 03:15:00,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2022-02-09 03:15:00,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1208, Unknown=0, NotChecked=0, Total=1406
[2022-02-09 03:15:00,532 INFO L87 Difference]: Start difference. First operand 101 states and 192 transitions. Second operand has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:15:02,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 03:15:02,317 INFO L93 Difference]: Finished difference Result 201 states and 376 transitions.
[2022-02-09 03:15:02,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2022-02-09 03:15:02,317 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31
[2022-02-09 03:15:02,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 03:15:02,317 INFO L225 Difference]: With dead ends: 201
[2022-02-09 03:15:02,317 INFO L226 Difference]: Without dead ends: 0
[2022-02-09 03:15:02,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2424 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1231, Invalid=6779, Unknown=0, NotChecked=0, Total=8010
[2022-02-09 03:15:02,319 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 246 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-02-09 03:15:02,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 175 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-02-09 03:15:02,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2022-02-09 03:15:02,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2022-02-09 03:15:02,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:15:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2022-02-09 03:15:02,320 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31
[2022-02-09 03:15:02,320 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 03:15:02,320 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2022-02-09 03:15:02,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-09 03:15:02,320 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2022-02-09 03:15:02,320 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2022-02-09 03:15:02,322 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining)
[2022-02-09 03:15:02,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining)
[2022-02-09 03:15:02,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining)
[2022-02-09 03:15:02,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0
[2022-02-09 03:15:02,530 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
[2022-02-09 03:15:02,536 INFO L732 BasicCegarLoop]: Path program histogram: [35, 1, 1]
[2022-02-09 03:15:02,540 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2022-02-09 03:15:02,540 INFO L180 ceAbstractionStarter]: Computing trace abstraction results
[2022-02-09 03:15:02,543 INFO L202 PluginConnector]: Adding new model nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.02 03:15:02 BasicIcfg
[2022-02-09 03:15:02,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-02-09 03:15:02,547 INFO L158 Benchmark]: Toolchain (without parser) took 93487.96ms. Allocated memory was 167.8MB in the beginning and 291.5MB in the end (delta: 123.7MB). Free memory was 130.5MB in the beginning and 125.3MB in the end (delta: 5.2MB). Peak memory consumption was 129.8MB. Max. memory is 8.0GB.
[2022-02-09 03:15:02,551 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 167.8MB. Free memory is still 131.5MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-02-09 03:15:02,551 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.03ms. Allocated memory is still 167.8MB. Free memory was 130.5MB in the beginning and 128.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-02-09 03:15:02,551 INFO L158 Benchmark]: Boogie Preprocessor took 15.97ms. Allocated memory is still 167.8MB. Free memory was 128.9MB in the beginning and 128.0MB in the end (delta: 912.4kB). There was no memory consumed. Max. memory is 8.0GB.
[2022-02-09 03:15:02,553 INFO L158 Benchmark]: RCFGBuilder took 201.11ms. Allocated memory is still 167.8MB. Free memory was 127.9MB in the beginning and 119.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB.
[2022-02-09 03:15:02,553 INFO L158 Benchmark]: TraceAbstraction took 93237.06ms. Allocated memory was 167.8MB in the beginning and 291.5MB in the end (delta: 123.7MB). Free memory was 118.6MB in the beginning and 125.3MB in the end (delta: -6.6MB). Peak memory consumption was 118.3MB. Max. memory is 8.0GB.
[2022-02-09 03:15:02,556 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 0.13ms. Allocated memory is still 167.8MB. Free memory is still 131.5MB. There was no memory consumed. Max. memory is 8.0GB.
* Boogie Procedure Inliner took 24.03ms. Allocated memory is still 167.8MB. Free memory was 130.5MB in the beginning and 128.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 15.97ms. Allocated memory is still 167.8MB. Free memory was 128.9MB in the beginning and 128.0MB in the end (delta: 912.4kB). There was no memory consumed. Max. memory is 8.0GB.
* RCFGBuilder took 201.11ms. Allocated memory is still 167.8MB. Free memory was 127.9MB in the beginning and 119.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB.
* TraceAbstraction took 93237.06ms. Allocated memory was 167.8MB in the beginning and 291.5MB in the end (delta: 123.7MB). Free memory was 118.6MB in the beginning and 125.3MB in the end (delta: -6.6MB). Peak memory consumption was 118.3MB. 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
- PositiveResult [Line: 50]: assertion always holds
For all program executions holds that assertion always holds at this location
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 5 procedures, 32 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 93.1s, OverallIterations: 37, TraceHistogramMax: 5, PathProgramHistogramMax: 35, EmptinessCheckTime: 0.0s, AutomataDifference: 49.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8830 SdHoareTripleChecker+Valid, 12.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8830 mSDsluCounter, 7261 SdHoareTripleChecker+Invalid, 10.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11502 mSDsCounter, 3164 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27925 IncrementalHoareTripleChecker+Invalid, 31089 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3164 mSolverCounterUnsat, 642 mSDtfsCounter, 27925 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3231 GetRequests, 910 SyntacticMatches, 87 SemanticMatches, 2234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47866 ImplicationChecksByTransitivity, 49.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=374occurred in iteration=31, InterpolantAutomatonStates: 1597, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 37 MinimizatonAttempts, 3745 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 34.2s InterpolantComputationTime, 1654 NumberOfCodeBlocks, 1654 NumberOfCodeBlocksAsserted, 131 NumberOfCheckSat, 2358 ConstructedInterpolants, 0 QuantifiedInterpolants, 39236 SizeOfPredicates, 315 NumberOfNonLiveVariables, 1695 ConjunctsInSsa, 870 ConjunctsInUnsatCore, 107 InterpolantComputations, 2 PerfectInterpolantSequences, 66/1018 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
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2022-02-09 03:15:02,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...