/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-2.i


--------------------------------------------------------------------------------


This is Ultimate 0.1.24-6598664
[2019-11-24 00:33:41,052 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-11-24 00:33:41,082 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2019-11-24 00:33:41,099 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf
[2019-11-24 00:33:41,114 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-24 00:33:41,114 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-24 00:33:41,115 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2019-11-24 00:33:41,115 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2019-11-24 00:33:41,115 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2019-11-24 00:33:41,116 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2019-11-24 00:33:41,116 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2019-11-24 00:33:41,116 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2019-11-24 00:33:41,116 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2019-11-24 00:33:41,116 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2019-11-24 00:33:41,117 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2019-11-24 00:33:41,117 INFO  L138        SettingsManager]:  * Interval Domain=false
[2019-11-24 00:33:41,117 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2019-11-24 00:33:41,117 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2019-11-24 00:33:41,117 INFO  L138        SettingsManager]:  * Simplification Technique=SIMPLIFY_QUICK
[2019-11-24 00:33:41,118 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-24 00:33:41,118 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-24 00:33:41,118 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-24 00:33:41,118 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-24 00:33:41,119 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-24 00:33:41,119 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-24 00:33:41,119 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-24 00:33:41,119 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-24 00:33:41,119 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-24 00:33:41,120 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-24 00:33:41,120 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-24 00:33:41,120 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-24 00:33:41,120 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-24 00:33:41,120 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-24 00:33:41,121 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-24 00:33:41,121 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-24 00:33:41,121 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-24 00:33:41,121 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-24 00:33:41,121 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2019-11-24 00:33:41,122 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-24 00:33:41,122 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-24 00:33:41,122 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-24 00:33:41,122 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2019-11-24 00:33:41,393 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-24 00:33:41,406 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-24 00:33:41,410 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-24 00:33:41,411 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-24 00:33:41,411 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-24 00:33:41,412 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-2.i
[2019-11-24 00:33:41,498 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f116e853/fa9952cdd9cd4ea981a5eb1420a98ed7/FLAGc5ffb2f83
[2019-11-24 00:33:42,043 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-24 00:33:42,043 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-2.i
[2019-11-24 00:33:42,065 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f116e853/fa9952cdd9cd4ea981a5eb1420a98ed7/FLAGc5ffb2f83
[2019-11-24 00:33:42,324 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f116e853/fa9952cdd9cd4ea981a5eb1420a98ed7
[2019-11-24 00:33:42,334 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-24 00:33:42,336 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2019-11-24 00:33:42,338 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-24 00:33:42,338 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-24 00:33:42,341 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-24 00:33:42,342 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:33:42" (1/1) ...
[2019-11-24 00:33:42,345 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1e4757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:42, skipping insertion in model container
[2019-11-24 00:33:42,346 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:33:42" (1/1) ...
[2019-11-24 00:33:42,353 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-24 00:33:42,424 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2019-11-24 00:33:42,886 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-24 00:33:42,896 INFO  L203         MainTranslator]: Completed pre-run
[2019-11-24 00:33:42,955 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-24 00:33:43,022 INFO  L208         MainTranslator]: Completed translation
[2019-11-24 00:33:43,022 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:43 WrapperNode
[2019-11-24 00:33:43,023 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-24 00:33:43,023 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2019-11-24 00:33:43,024 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2019-11-24 00:33:43,024 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2019-11-24 00:33:43,033 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:43" (1/1) ...
[2019-11-24 00:33:43,073 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:43" (1/1) ...
[2019-11-24 00:33:43,118 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2019-11-24 00:33:43,119 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-24 00:33:43,119 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-24 00:33:43,119 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-24 00:33:43,129 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:43" (1/1) ...
[2019-11-24 00:33:43,130 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:43" (1/1) ...
[2019-11-24 00:33:43,133 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:43" (1/1) ...
[2019-11-24 00:33:43,134 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:43" (1/1) ...
[2019-11-24 00:33:43,152 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:43" (1/1) ...
[2019-11-24 00:33:43,162 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:43" (1/1) ...
[2019-11-24 00:33:43,167 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:43" (1/1) ...
[2019-11-24 00:33:43,172 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-24 00:33:43,173 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-24 00:33:43,173 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-24 00:33:43,173 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-24 00:33:43,180 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:43" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-24 00:33:43,232 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2019-11-24 00:33:43,233 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2019-11-24 00:33:43,233 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2019-11-24 00:33:43,233 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2019-11-24 00:33:43,233 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2019-11-24 00:33:43,233 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-11-24 00:33:43,234 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-24 00:33:43,234 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-24 00:33:44,060 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-24 00:33:44,061 INFO  L284             CfgBuilder]: Removed 21 assume(true) statements.
[2019-11-24 00:33:44,062 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:33:44 BoogieIcfgContainer
[2019-11-24 00:33:44,062 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-24 00:33:44,063 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-24 00:33:44,063 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-24 00:33:44,067 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-24 00:33:44,067 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:33:42" (1/3) ...
[2019-11-24 00:33:44,068 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764ef0a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:33:44, skipping insertion in model container
[2019-11-24 00:33:44,068 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:43" (2/3) ...
[2019-11-24 00:33:44,068 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764ef0a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:33:44, skipping insertion in model container
[2019-11-24 00:33:44,068 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:33:44" (3/3) ...
[2019-11-24 00:33:44,070 INFO  L109   eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-2.i
[2019-11-24 00:33:44,080 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-24 00:33:44,087 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations.
[2019-11-24 00:33:44,099 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 7 error locations.
[2019-11-24 00:33:44,124 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-24 00:33:44,124 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-24 00:33:44,124 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-24 00:33:44,124 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-24 00:33:44,124 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-24 00:33:44,125 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-24 00:33:44,125 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-24 00:33:44,125 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-24 00:33:44,142 INFO  L276                IsEmpty]: Start isEmpty. Operand 41 states.
[2019-11-24 00:33:44,149 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2019-11-24 00:33:44,149 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 00:33:44,150 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2019-11-24 00:33:44,151 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 00:33:44,157 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 00:33:44,157 INFO  L82        PathProgramCache]: Analyzing trace with hash 203576989, now seen corresponding path program 1 times
[2019-11-24 00:33:44,167 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 00:33:44,167 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044498783]
[2019-11-24 00:33:44,168 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 00:33:44,269 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 00:33:44,318 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 00:33:44,319 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044498783]
[2019-11-24 00:33:44,320 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 00:33:44,320 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-11-24 00:33:44,321 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747182463]
[2019-11-24 00:33:44,325 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-11-24 00:33:44,325 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 00:33:44,335 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-11-24 00:33:44,336 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-11-24 00:33:44,337 INFO  L87              Difference]: Start difference. First operand 41 states. Second operand 2 states.
[2019-11-24 00:33:44,357 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 00:33:44,357 INFO  L93              Difference]: Finished difference Result 81 states and 131 transitions.
[2019-11-24 00:33:44,357 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2019-11-24 00:33:44,358 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 5
[2019-11-24 00:33:44,359 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 00:33:44,369 INFO  L225             Difference]: With dead ends: 81
[2019-11-24 00:33:44,369 INFO  L226             Difference]: Without dead ends: 39
[2019-11-24 00:33:44,373 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-11-24 00:33:44,392 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2019-11-24 00:33:44,409 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39.
[2019-11-24 00:33:44,410 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 39 states.
[2019-11-24 00:33:44,412 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions.
[2019-11-24 00:33:44,413 INFO  L78                 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 5
[2019-11-24 00:33:44,414 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 00:33:44,414 INFO  L462      AbstractCegarLoop]: Abstraction has 39 states and 41 transitions.
[2019-11-24 00:33:44,414 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-11-24 00:33:44,414 INFO  L276                IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions.
[2019-11-24 00:33:44,415 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2019-11-24 00:33:44,415 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 00:33:44,415 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2019-11-24 00:33:44,416 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 00:33:44,416 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 00:33:44,416 INFO  L82        PathProgramCache]: Analyzing trace with hash 1958422882, now seen corresponding path program 1 times
[2019-11-24 00:33:44,416 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 00:33:44,417 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892090569]
[2019-11-24 00:33:44,417 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 00:33:44,484 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 00:33:44,593 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 00:33:44,593 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892090569]
[2019-11-24 00:33:44,593 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 00:33:44,594 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-24 00:33:44,594 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977168102]
[2019-11-24 00:33:44,596 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-24 00:33:44,596 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 00:33:44,611 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-24 00:33:44,611 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-24 00:33:44,612 INFO  L87              Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states.
[2019-11-24 00:33:45,020 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 00:33:45,020 INFO  L93              Difference]: Finished difference Result 39 states and 41 transitions.
[2019-11-24 00:33:45,021 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-24 00:33:45,022 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 6
[2019-11-24 00:33:45,022 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 00:33:45,022 INFO  L225             Difference]: With dead ends: 39
[2019-11-24 00:33:45,023 INFO  L226             Difference]: Without dead ends: 37
[2019-11-24 00:33:45,023 INFO  L630         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
[2019-11-24 00:33:45,024 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2019-11-24 00:33:45,028 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37.
[2019-11-24 00:33:45,028 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 37 states.
[2019-11-24 00:33:45,029 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions.
[2019-11-24 00:33:45,029 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 6
[2019-11-24 00:33:45,029 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 00:33:45,029 INFO  L462      AbstractCegarLoop]: Abstraction has 37 states and 39 transitions.
[2019-11-24 00:33:45,030 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-24 00:33:45,030 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions.
[2019-11-24 00:33:45,030 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2019-11-24 00:33:45,030 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 00:33:45,030 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2019-11-24 00:33:45,031 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 00:33:45,031 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 00:33:45,031 INFO  L82        PathProgramCache]: Analyzing trace with hash 1953024847, now seen corresponding path program 1 times
[2019-11-24 00:33:45,032 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 00:33:45,032 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174774254]
[2019-11-24 00:33:45,032 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 00:33:45,051 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 00:33:45,089 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 00:33:45,090 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174774254]
[2019-11-24 00:33:45,090 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 00:33:45,090 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-24 00:33:45,090 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420850138]
[2019-11-24 00:33:45,091 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-24 00:33:45,092 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 00:33:45,092 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-24 00:33:45,092 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-24 00:33:45,092 INFO  L87              Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states.
[2019-11-24 00:33:45,235 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 00:33:45,235 INFO  L93              Difference]: Finished difference Result 43 states and 47 transitions.
[2019-11-24 00:33:45,236 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-24 00:33:45,236 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 6
[2019-11-24 00:33:45,236 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 00:33:45,237 INFO  L225             Difference]: With dead ends: 43
[2019-11-24 00:33:45,237 INFO  L226             Difference]: Without dead ends: 41
[2019-11-24 00:33:45,237 INFO  L630         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
[2019-11-24 00:33:45,238 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2019-11-24 00:33:45,242 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35.
[2019-11-24 00:33:45,242 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2019-11-24 00:33:45,243 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions.
[2019-11-24 00:33:45,243 INFO  L78                 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 6
[2019-11-24 00:33:45,244 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 00:33:45,244 INFO  L462      AbstractCegarLoop]: Abstraction has 35 states and 37 transitions.
[2019-11-24 00:33:45,244 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-24 00:33:45,244 INFO  L276                IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions.
[2019-11-24 00:33:45,245 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2019-11-24 00:33:45,245 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 00:33:45,245 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 00:33:45,245 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 00:33:45,245 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 00:33:45,246 INFO  L82        PathProgramCache]: Analyzing trace with hash 544270243, now seen corresponding path program 1 times
[2019-11-24 00:33:45,246 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 00:33:45,246 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824089305]
[2019-11-24 00:33:45,246 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 00:33:45,271 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 00:33:45,350 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 00:33:45,351 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824089305]
[2019-11-24 00:33:45,351 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 00:33:45,351 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-24 00:33:45,352 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812213940]
[2019-11-24 00:33:45,352 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-24 00:33:45,352 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 00:33:45,352 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-24 00:33:45,353 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-24 00:33:45,353 INFO  L87              Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 4 states.
[2019-11-24 00:33:45,663 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 00:33:45,663 INFO  L93              Difference]: Finished difference Result 35 states and 37 transitions.
[2019-11-24 00:33:45,666 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-24 00:33:45,666 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 9
[2019-11-24 00:33:45,667 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 00:33:45,667 INFO  L225             Difference]: With dead ends: 35
[2019-11-24 00:33:45,667 INFO  L226             Difference]: Without dead ends: 33
[2019-11-24 00:33:45,668 INFO  L630         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
[2019-11-24 00:33:45,669 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2019-11-24 00:33:45,674 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2019-11-24 00:33:45,674 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 33 states.
[2019-11-24 00:33:45,675 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions.
[2019-11-24 00:33:45,675 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 9
[2019-11-24 00:33:45,676 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 00:33:45,676 INFO  L462      AbstractCegarLoop]: Abstraction has 33 states and 35 transitions.
[2019-11-24 00:33:45,676 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-24 00:33:45,677 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions.
[2019-11-24 00:33:45,677 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2019-11-24 00:33:45,677 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 00:33:45,677 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 00:33:45,678 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 00:33:45,678 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 00:33:45,678 INFO  L82        PathProgramCache]: Analyzing trace with hash -1354743889, now seen corresponding path program 1 times
[2019-11-24 00:33:45,679 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 00:33:45,680 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14563664]
[2019-11-24 00:33:45,680 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 00:33:45,721 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 00:33:45,876 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 00:33:45,876 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14563664]
[2019-11-24 00:33:45,876 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 00:33:45,876 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-24 00:33:45,878 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095261586]
[2019-11-24 00:33:45,879 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-11-24 00:33:45,879 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 00:33:45,880 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-11-24 00:33:45,880 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2019-11-24 00:33:45,880 INFO  L87              Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 6 states.
[2019-11-24 00:33:46,418 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 00:33:46,418 INFO  L93              Difference]: Finished difference Result 58 states and 63 transitions.
[2019-11-24 00:33:46,419 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-11-24 00:33:46,419 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 9
[2019-11-24 00:33:46,419 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 00:33:46,420 INFO  L225             Difference]: With dead ends: 58
[2019-11-24 00:33:46,420 INFO  L226             Difference]: Without dead ends: 56
[2019-11-24 00:33:46,421 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2019-11-24 00:33:46,421 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2019-11-24 00:33:46,426 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 40.
[2019-11-24 00:33:46,427 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 40 states.
[2019-11-24 00:33:46,427 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions.
[2019-11-24 00:33:46,428 INFO  L78                 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 9
[2019-11-24 00:33:46,428 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 00:33:46,428 INFO  L462      AbstractCegarLoop]: Abstraction has 40 states and 43 transitions.
[2019-11-24 00:33:46,428 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-11-24 00:33:46,428 INFO  L276                IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions.
[2019-11-24 00:33:46,429 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2019-11-24 00:33:46,429 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 00:33:46,429 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 00:33:46,429 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 00:33:46,430 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 00:33:46,430 INFO  L82        PathProgramCache]: Analyzing trace with hash -942178809, now seen corresponding path program 1 times
[2019-11-24 00:33:46,430 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 00:33:46,430 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745096508]
[2019-11-24 00:33:46,431 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 00:33:46,477 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 00:33:46,599 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 00:33:46,600 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745096508]
[2019-11-24 00:33:46,600 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 00:33:46,600 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-24 00:33:46,601 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51186966]
[2019-11-24 00:33:46,601 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-24 00:33:46,601 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 00:33:46,602 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-24 00:33:46,602 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-24 00:33:46,603 INFO  L87              Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 4 states.
[2019-11-24 00:33:46,712 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 00:33:46,713 INFO  L93              Difference]: Finished difference Result 40 states and 43 transitions.
[2019-11-24 00:33:46,715 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-24 00:33:46,716 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 11
[2019-11-24 00:33:46,716 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 00:33:46,717 INFO  L225             Difference]: With dead ends: 40
[2019-11-24 00:33:46,717 INFO  L226             Difference]: Without dead ends: 38
[2019-11-24 00:33:46,720 INFO  L630         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
[2019-11-24 00:33:46,721 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2019-11-24 00:33:46,725 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38.
[2019-11-24 00:33:46,725 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 38 states.
[2019-11-24 00:33:46,726 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions.
[2019-11-24 00:33:46,726 INFO  L78                 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 11
[2019-11-24 00:33:46,726 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 00:33:46,726 INFO  L462      AbstractCegarLoop]: Abstraction has 38 states and 41 transitions.
[2019-11-24 00:33:46,727 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-24 00:33:46,727 INFO  L276                IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions.
[2019-11-24 00:33:46,728 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2019-11-24 00:33:46,728 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 00:33:46,728 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 00:33:46,728 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 00:33:46,729 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 00:33:46,729 INFO  L82        PathProgramCache]: Analyzing trace with hash -1743206058, now seen corresponding path program 1 times
[2019-11-24 00:33:46,729 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 00:33:46,729 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753854702]
[2019-11-24 00:33:46,730 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 00:33:46,739 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 00:33:46,834 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 00:33:46,834 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753854702]
[2019-11-24 00:33:46,834 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 00:33:46,835 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-24 00:33:46,837 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813134760]
[2019-11-24 00:33:46,837 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-24 00:33:46,837 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 00:33:46,838 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-24 00:33:46,838 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-24 00:33:46,839 INFO  L87              Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 5 states.
[2019-11-24 00:33:47,320 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 00:33:47,321 INFO  L93              Difference]: Finished difference Result 53 states and 58 transitions.
[2019-11-24 00:33:47,321 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-24 00:33:47,321 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 13
[2019-11-24 00:33:47,322 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 00:33:47,322 INFO  L225             Difference]: With dead ends: 53
[2019-11-24 00:33:47,322 INFO  L226             Difference]: Without dead ends: 41
[2019-11-24 00:33:47,323 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-24 00:33:47,324 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2019-11-24 00:33:47,328 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40.
[2019-11-24 00:33:47,328 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 40 states.
[2019-11-24 00:33:47,329 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions.
[2019-11-24 00:33:47,329 INFO  L78                 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 13
[2019-11-24 00:33:47,329 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 00:33:47,329 INFO  L462      AbstractCegarLoop]: Abstraction has 40 states and 43 transitions.
[2019-11-24 00:33:47,329 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-24 00:33:47,330 INFO  L276                IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions.
[2019-11-24 00:33:47,330 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2019-11-24 00:33:47,331 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 00:33:47,331 INFO  L410         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 00:33:47,331 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 00:33:47,331 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 00:33:47,332 INFO  L82        PathProgramCache]: Analyzing trace with hash -282967061, now seen corresponding path program 1 times
[2019-11-24 00:33:47,332 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 00:33:47,332 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763224299]
[2019-11-24 00:33:47,333 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 00:33:47,353 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 00:33:47,412 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 00:33:47,412 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763224299]
[2019-11-24 00:33:47,412 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633672717]
[2019-11-24 00:33:47,413 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-24 00:33:47,499 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 00:33:47,501 INFO  L255         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core
[2019-11-24 00:33:47,510 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2019-11-24 00:33:47,570 INFO  L189   IndexEqualityManager]: detected not equals via solver
[2019-11-24 00:33:47,571 INFO  L189   IndexEqualityManager]: detected not equals via solver
[2019-11-24 00:33:47,573 INFO  L189   IndexEqualityManager]: detected not equals via solver
[2019-11-24 00:33:47,589 INFO  L377             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17
[2019-11-24 00:33:47,589 INFO  L496         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-11-24 00:33:47,601 INFO  L567         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2019-11-24 00:33:47,606 INFO  L189   IndexEqualityManager]: detected not equals via solver
[2019-11-24 00:33:47,607 INFO  L189   IndexEqualityManager]: detected not equals via solver
[2019-11-24 00:33:47,608 INFO  L189   IndexEqualityManager]: detected not equals via solver
[2019-11-24 00:33:47,611 INFO  L377             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17
[2019-11-24 00:33:47,611 INFO  L496         ElimStorePlain]: Start of recursive call 3:  End of recursive call:  and 1 xjuncts.
[2019-11-24 00:33:47,621 INFO  L567         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2019-11-24 00:33:47,622 INFO  L496         ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-11-24 00:33:47,622 INFO  L221         ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:55, output treesize:33
[2019-11-24 00:33:47,684 INFO  L189   IndexEqualityManager]: detected not equals via solver
[2019-11-24 00:33:47,686 INFO  L377             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10
[2019-11-24 00:33:47,686 INFO  L496         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-11-24 00:33:47,698 INFO  L567         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2019-11-24 00:33:47,704 INFO  L343             Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2019-11-24 00:33:47,705 INFO  L377             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10
[2019-11-24 00:33:47,705 INFO  L496         ElimStorePlain]: Start of recursive call 3:  End of recursive call:  and 1 xjuncts.
[2019-11-24 00:33:47,712 INFO  L567         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2019-11-24 00:33:47,713 INFO  L496         ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-11-24 00:33:47,713 INFO  L221         ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:7
[2019-11-24 00:33:47,716 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 00:33:47,716 INFO  L320         TraceCheckSpWp]: Computing backward predicates...
[2019-11-24 00:33:47,724 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 00:33:47,724 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1217440451]
[2019-11-24 00:33:47,752 INFO  L159        IcfgInterpreter]: Started Sifa with 15 locations of interest
[2019-11-24 00:33:47,752 INFO  L166        IcfgInterpreter]: Building call graph
[2019-11-24 00:33:47,758 INFO  L171        IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2019-11-24 00:33:47,766 INFO  L176        IcfgInterpreter]: Starting interpretation
[2019-11-24 00:33:47,766 INFO  L197        IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2019-11-24 00:33:48,629 INFO  L180        IcfgInterpreter]: Interpretation finished
[2019-11-24 00:33:48,941 WARN  L192               SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78
[2019-11-24 00:33:49,251 WARN  L192               SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84
[2019-11-24 00:33:49,623 WARN  L192               SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83
[2019-11-24 00:33:50,349 WARN  L192               SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 86
[2019-11-24 00:33:50,897 WARN  L192               SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 81
[2019-11-24 00:33:50,940 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences.
[2019-11-24 00:33:50,940 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 11
[2019-11-24 00:33:50,941 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131746577]
[2019-11-24 00:33:50,942 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-11-24 00:33:50,942 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 00:33:50,943 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-11-24 00:33:50,943 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132
[2019-11-24 00:33:50,943 INFO  L87              Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 7 states.
[2019-11-24 00:33:51,827 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 00:33:51,828 INFO  L93              Difference]: Finished difference Result 58 states and 63 transitions.
[2019-11-24 00:33:51,828 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-11-24 00:33:51,828 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 16
[2019-11-24 00:33:51,829 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 00:33:51,829 INFO  L225             Difference]: With dead ends: 58
[2019-11-24 00:33:51,830 INFO  L226             Difference]: Without dead ends: 35
[2019-11-24 00:33:51,831 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132
[2019-11-24 00:33:51,832 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2019-11-24 00:33:51,835 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35.
[2019-11-24 00:33:51,835 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2019-11-24 00:33:51,835 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions.
[2019-11-24 00:33:51,836 INFO  L78                 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 16
[2019-11-24 00:33:51,836 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 00:33:51,836 INFO  L462      AbstractCegarLoop]: Abstraction has 35 states and 37 transitions.
[2019-11-24 00:33:51,836 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2019-11-24 00:33:51,836 INFO  L276                IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions.
[2019-11-24 00:33:51,837 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2019-11-24 00:33:51,837 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 00:33:51,837 INFO  L410         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 00:33:52,042 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-24 00:33:52,047 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 00:33:52,048 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 00:33:52,048 INFO  L82        PathProgramCache]: Analyzing trace with hash 156699999, now seen corresponding path program 1 times
[2019-11-24 00:33:52,048 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 00:33:52,049 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503466476]
[2019-11-24 00:33:52,049 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 00:33:52,113 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 00:33:52,583 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 00:33:52,584 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503466476]
[2019-11-24 00:33:52,584 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165683804]
[2019-11-24 00:33:52,584 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-24 00:33:52,655 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 00:33:52,657 INFO  L255         TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core
[2019-11-24 00:33:52,663 INFO  L278         TraceCheckSpWp]: Computing forward predicates...