/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/product-lines/elevator_spec2_product20.cil.c


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


This is Ultimate 0.1.24-6598664
[2019-11-24 04:41:11,350 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-11-24 04:41:11,353 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2019-11-24 04:41:11,367 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2019-11-24 04:41:11,380 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2019-11-24 04:41:11,399 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2019-11-24 04:41:11,401 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-11-24 04:41:11,402 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 04:41:11,419 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-24 04:41:11,419 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-24 04:41:11,420 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2019-11-24 04:41:11,421 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2019-11-24 04:41:11,423 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2019-11-24 04:41:11,423 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2019-11-24 04:41:11,423 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2019-11-24 04:41:11,424 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2019-11-24 04:41:11,424 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2019-11-24 04:41:11,424 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2019-11-24 04:41:11,424 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2019-11-24 04:41:11,424 INFO  L138        SettingsManager]:  * Interval Domain=false
[2019-11-24 04:41:11,425 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2019-11-24 04:41:11,427 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2019-11-24 04:41:11,427 INFO  L138        SettingsManager]:  * Simplification Technique=SIMPLIFY_QUICK
[2019-11-24 04:41:11,428 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-24 04:41:11,428 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-24 04:41:11,428 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-24 04:41:11,428 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-24 04:41:11,429 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-24 04:41:11,429 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-24 04:41:11,429 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-24 04:41:11,429 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-24 04:41:11,429 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-24 04:41:11,431 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-24 04:41:11,431 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-24 04:41:11,431 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-24 04:41:11,431 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-24 04:41:11,432 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-24 04:41:11,433 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-24 04:41:11,433 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-24 04:41:11,433 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-24 04:41:11,434 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-24 04:41:11,434 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2019-11-24 04:41:11,434 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-24 04:41:11,434 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-24 04:41:11,434 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-24 04:41:11,434 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2019-11-24 04:41:11,713 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-24 04:41:11,726 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-24 04:41:11,729 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-24 04:41:11,731 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-24 04:41:11,732 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-24 04:41:11,732 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product20.cil.c
[2019-11-24 04:41:11,802 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/667e4e3c7/21caf9dda98a4c5da81be96a05bcbb10/FLAGc1ec579d4
[2019-11-24 04:41:12,497 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-24 04:41:12,497 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product20.cil.c
[2019-11-24 04:41:12,522 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/667e4e3c7/21caf9dda98a4c5da81be96a05bcbb10/FLAGc1ec579d4
[2019-11-24 04:41:12,654 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/667e4e3c7/21caf9dda98a4c5da81be96a05bcbb10
[2019-11-24 04:41:12,663 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-24 04:41:12,664 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2019-11-24 04:41:12,665 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-24 04:41:12,665 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-24 04:41:12,669 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-24 04:41:12,670 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:41:12" (1/1) ...
[2019-11-24 04:41:12,673 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f8554ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:41:12, skipping insertion in model container
[2019-11-24 04:41:12,674 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:41:12" (1/1) ...
[2019-11-24 04:41:12,682 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-24 04:41:12,748 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2019-11-24 04:41:13,489 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-24 04:41:13,511 INFO  L203         MainTranslator]: Completed pre-run
[2019-11-24 04:41:13,631 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-24 04:41:13,710 INFO  L208         MainTranslator]: Completed translation
[2019-11-24 04:41:13,711 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:41:13 WrapperNode
[2019-11-24 04:41:13,711 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-24 04:41:13,712 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2019-11-24 04:41:13,712 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2019-11-24 04:41:13,712 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2019-11-24 04:41:13,721 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:41:13" (1/1) ...
[2019-11-24 04:41:13,755 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:41:13" (1/1) ...
[2019-11-24 04:41:14,019 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2019-11-24 04:41:14,019 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-24 04:41:14,019 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-24 04:41:14,020 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-24 04:41:14,030 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:41:13" (1/1) ...
[2019-11-24 04:41:14,031 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:41:13" (1/1) ...
[2019-11-24 04:41:14,065 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:41:13" (1/1) ...
[2019-11-24 04:41:14,120 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:41:13" (1/1) ...
[2019-11-24 04:41:14,248 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:41:13" (1/1) ...
[2019-11-24 04:41:14,347 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:41:13" (1/1) ...
[2019-11-24 04:41:14,387 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:41:13" (1/1) ...
[2019-11-24 04:41:14,423 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-24 04:41:14,424 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-24 04:41:14,424 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-24 04:41:14,424 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-24 04:41:14,425 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:41:13" (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 04:41:14,485 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-11-24 04:41:14,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2019-11-24 04:41:14,486 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-24 04:41:14,486 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-24 04:42:04,325 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-24 04:42:04,325 INFO  L284             CfgBuilder]: Removed 1149 assume(true) statements.
[2019-11-24 04:42:04,327 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:42:04 BoogieIcfgContainer
[2019-11-24 04:42:04,328 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-24 04:42:04,329 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-24 04:42:04,329 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-24 04:42:04,332 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-24 04:42:04,332 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:41:12" (1/3) ...
[2019-11-24 04:42:04,333 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114c5ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:42:04, skipping insertion in model container
[2019-11-24 04:42:04,333 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:41:13" (2/3) ...
[2019-11-24 04:42:04,333 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114c5ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:42:04, skipping insertion in model container
[2019-11-24 04:42:04,334 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:42:04" (3/3) ...
[2019-11-24 04:42:04,335 INFO  L109   eAbstractionObserver]: Analyzing ICFG elevator_spec2_product20.cil.c
[2019-11-24 04:42:04,345 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-24 04:42:04,355 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations.
[2019-11-24 04:42:04,364 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2019-11-24 04:42:04,399 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-24 04:42:04,399 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-24 04:42:04,399 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-24 04:42:04,400 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-24 04:42:04,400 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-24 04:42:04,400 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-24 04:42:04,400 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-24 04:42:04,400 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-24 04:42:04,446 INFO  L276                IsEmpty]: Start isEmpty. Operand 1449 states.
[2019-11-24 04:42:04,460 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2019-11-24 04:42:04,461 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:42:04,462 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:42:04,463 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:42:04,469 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:42:04,469 INFO  L82        PathProgramCache]: Analyzing trace with hash 1317821261, now seen corresponding path program 1 times
[2019-11-24 04:42:04,479 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:42:04,480 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837616269]
[2019-11-24 04:42:04,480 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:42:04,739 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:42:04,871 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 04:42:04,872 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837616269]
[2019-11-24 04:42:04,874 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:42:04,874 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-11-24 04:42:04,875 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012015678]
[2019-11-24 04:42:04,881 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-11-24 04:42:04,881 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:42:04,895 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-11-24 04:42:04,896 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-11-24 04:42:04,898 INFO  L87              Difference]: Start difference. First operand 1449 states. Second operand 2 states.
[2019-11-24 04:42:05,001 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:42:05,002 INFO  L93              Difference]: Finished difference Result 1466 states and 2819 transitions.
[2019-11-24 04:42:05,002 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2019-11-24 04:42:05,003 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 12
[2019-11-24 04:42:05,004 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:42:05,045 INFO  L225             Difference]: With dead ends: 1466
[2019-11-24 04:42:05,045 INFO  L226             Difference]: Without dead ends: 1447
[2019-11-24 04:42:05,051 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 04:42:05,076 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1447 states.
[2019-11-24 04:42:05,185 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1447.
[2019-11-24 04:42:05,186 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1447 states.
[2019-11-24 04:42:05,194 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 2789 transitions.
[2019-11-24 04:42:05,196 INFO  L78                 Accepts]: Start accepts. Automaton has 1447 states and 2789 transitions. Word has length 12
[2019-11-24 04:42:05,196 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:42:05,197 INFO  L462      AbstractCegarLoop]: Abstraction has 1447 states and 2789 transitions.
[2019-11-24 04:42:05,197 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-11-24 04:42:05,197 INFO  L276                IsEmpty]: Start isEmpty. Operand 1447 states and 2789 transitions.
[2019-11-24 04:42:05,200 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2019-11-24 04:42:05,200 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:42:05,200 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:42:05,201 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:42:05,201 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:42:05,201 INFO  L82        PathProgramCache]: Analyzing trace with hash -2127715054, now seen corresponding path program 1 times
[2019-11-24 04:42:05,202 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:42:05,203 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997894186]
[2019-11-24 04:42:05,203 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:42:05,266 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:42:05,400 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 04:42:05,400 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997894186]
[2019-11-24 04:42:05,401 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:42:05,401 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-24 04:42:05,401 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487987734]
[2019-11-24 04:42:05,402 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-24 04:42:05,403 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:42:05,403 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-24 04:42:05,403 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:42:05,404 INFO  L87              Difference]: Start difference. First operand 1447 states and 2789 transitions. Second operand 3 states.
[2019-11-24 04:42:05,842 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:42:05,842 INFO  L93              Difference]: Finished difference Result 2552 states and 4910 transitions.
[2019-11-24 04:42:05,843 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-24 04:42:05,843 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 13
[2019-11-24 04:42:05,843 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:42:05,854 INFO  L225             Difference]: With dead ends: 2552
[2019-11-24 04:42:05,854 INFO  L226             Difference]: Without dead ends: 1808
[2019-11-24 04:42:05,863 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:42:05,869 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1808 states.
[2019-11-24 04:42:05,913 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1734.
[2019-11-24 04:42:05,913 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1734 states.
[2019-11-24 04:42:05,923 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 3337 transitions.
[2019-11-24 04:42:05,923 INFO  L78                 Accepts]: Start accepts. Automaton has 1734 states and 3337 transitions. Word has length 13
[2019-11-24 04:42:05,923 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:42:05,923 INFO  L462      AbstractCegarLoop]: Abstraction has 1734 states and 3337 transitions.
[2019-11-24 04:42:05,924 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-24 04:42:05,924 INFO  L276                IsEmpty]: Start isEmpty. Operand 1734 states and 3337 transitions.
[2019-11-24 04:42:05,927 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2019-11-24 04:42:05,928 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:42:05,928 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:42:05,929 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:42:05,930 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:42:05,930 INFO  L82        PathProgramCache]: Analyzing trace with hash -1861973983, now seen corresponding path program 1 times
[2019-11-24 04:42:05,931 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:42:05,931 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246333267]
[2019-11-24 04:42:05,932 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:42:05,992 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:42:06,048 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 04:42:06,048 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246333267]
[2019-11-24 04:42:06,049 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:42:06,049 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-24 04:42:06,049 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356348014]
[2019-11-24 04:42:06,049 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-24 04:42:06,050 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:42:06,050 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-24 04:42:06,050 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-24 04:42:06,050 INFO  L87              Difference]: Start difference. First operand 1734 states and 3337 transitions. Second operand 4 states.
[2019-11-24 04:42:07,519 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:42:07,520 INFO  L93              Difference]: Finished difference Result 4740 states and 9068 transitions.
[2019-11-24 04:42:07,523 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-24 04:42:07,524 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 15
[2019-11-24 04:42:07,524 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:42:07,543 INFO  L225             Difference]: With dead ends: 4740
[2019-11-24 04:42:07,552 INFO  L226             Difference]: Without dead ends: 3470
[2019-11-24 04:42:07,556 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 04:42:07,562 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3470 states.
[2019-11-24 04:42:07,634 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 2318.
[2019-11-24 04:42:07,635 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2318 states.
[2019-11-24 04:42:07,643 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 4315 transitions.
[2019-11-24 04:42:07,643 INFO  L78                 Accepts]: Start accepts. Automaton has 2318 states and 4315 transitions. Word has length 15
[2019-11-24 04:42:07,643 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:42:07,644 INFO  L462      AbstractCegarLoop]: Abstraction has 2318 states and 4315 transitions.
[2019-11-24 04:42:07,644 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-24 04:42:07,644 INFO  L276                IsEmpty]: Start isEmpty. Operand 2318 states and 4315 transitions.
[2019-11-24 04:42:07,645 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2019-11-24 04:42:07,646 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:42:07,646 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:42:07,646 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:42:07,646 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:42:07,647 INFO  L82        PathProgramCache]: Analyzing trace with hash -1276048064, now seen corresponding path program 1 times
[2019-11-24 04:42:07,647 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:42:07,647 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103458373]
[2019-11-24 04:42:07,647 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:42:07,700 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:42:07,752 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 04:42:07,753 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103458373]
[2019-11-24 04:42:07,753 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:42:07,753 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-24 04:42:07,753 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997101171]
[2019-11-24 04:42:07,753 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-24 04:42:07,754 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:42:07,754 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-24 04:42:07,755 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:42:07,755 INFO  L87              Difference]: Start difference. First operand 2318 states and 4315 transitions. Second operand 3 states.
[2019-11-24 04:42:08,394 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:42:08,394 INFO  L93              Difference]: Finished difference Result 4636 states and 8654 transitions.
[2019-11-24 04:42:08,395 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-24 04:42:08,395 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 17
[2019-11-24 04:42:08,395 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:42:08,417 INFO  L225             Difference]: With dead ends: 4636
[2019-11-24 04:42:08,417 INFO  L226             Difference]: Without dead ends: 3504
[2019-11-24 04:42:08,426 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:42:08,432 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3504 states.
[2019-11-24 04:42:08,514 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3504 to 3058.
[2019-11-24 04:42:08,514 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3058 states.
[2019-11-24 04:42:08,525 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3058 states to 3058 states and 5659 transitions.
[2019-11-24 04:42:08,525 INFO  L78                 Accepts]: Start accepts. Automaton has 3058 states and 5659 transitions. Word has length 17
[2019-11-24 04:42:08,525 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:42:08,526 INFO  L462      AbstractCegarLoop]: Abstraction has 3058 states and 5659 transitions.
[2019-11-24 04:42:08,526 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-24 04:42:08,526 INFO  L276                IsEmpty]: Start isEmpty. Operand 3058 states and 5659 transitions.
[2019-11-24 04:42:08,527 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2019-11-24 04:42:08,528 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:42:08,528 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:42:08,528 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:42:08,528 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:42:08,529 INFO  L82        PathProgramCache]: Analyzing trace with hash -902755199, now seen corresponding path program 1 times
[2019-11-24 04:42:08,529 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:42:08,529 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402073356]
[2019-11-24 04:42:08,529 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:42:08,572 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:42:08,619 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 04:42:08,620 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402073356]
[2019-11-24 04:42:08,620 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:42:08,620 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-24 04:42:08,620 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553129662]
[2019-11-24 04:42:08,621 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-24 04:42:08,621 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:42:08,621 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-24 04:42:08,621 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:42:08,624 INFO  L87              Difference]: Start difference. First operand 3058 states and 5659 transitions. Second operand 3 states.
[2019-11-24 04:42:09,160 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:42:09,160 INFO  L93              Difference]: Finished difference Result 4844 states and 8997 transitions.
[2019-11-24 04:42:09,161 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-24 04:42:09,162 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 18
[2019-11-24 04:42:09,162 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:42:09,184 INFO  L225             Difference]: With dead ends: 4844
[2019-11-24 04:42:09,184 INFO  L226             Difference]: Without dead ends: 3051
[2019-11-24 04:42:09,189 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:42:09,197 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3051 states.
[2019-11-24 04:42:11,512 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 3051.
[2019-11-24 04:42:11,512 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3051 states.
[2019-11-24 04:42:11,524 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 5642 transitions.
[2019-11-24 04:42:11,524 INFO  L78                 Accepts]: Start accepts. Automaton has 3051 states and 5642 transitions. Word has length 18
[2019-11-24 04:42:11,524 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:42:11,525 INFO  L462      AbstractCegarLoop]: Abstraction has 3051 states and 5642 transitions.
[2019-11-24 04:42:11,525 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-24 04:42:11,525 INFO  L276                IsEmpty]: Start isEmpty. Operand 3051 states and 5642 transitions.
[2019-11-24 04:42:11,527 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2019-11-24 04:42:11,527 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:42:11,527 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:42:11,527 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:42:11,528 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:42:11,528 INFO  L82        PathProgramCache]: Analyzing trace with hash 2079389033, now seen corresponding path program 1 times
[2019-11-24 04:42:11,528 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:42:11,528 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166262151]
[2019-11-24 04:42:11,529 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:42:11,561 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:42:11,602 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 04:42:11,602 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166262151]
[2019-11-24 04:42:11,602 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:42:11,603 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-24 04:42:11,603 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742092968]
[2019-11-24 04:42:11,603 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-24 04:42:11,603 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:42:11,604 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-24 04:42:11,604 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:42:11,604 INFO  L87              Difference]: Start difference. First operand 3051 states and 5642 transitions. Second operand 3 states.
[2019-11-24 04:42:12,166 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:42:12,166 INFO  L93              Difference]: Finished difference Result 6754 states and 12571 transitions.
[2019-11-24 04:42:12,168 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-24 04:42:12,168 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 19
[2019-11-24 04:42:12,168 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:42:12,195 INFO  L225             Difference]: With dead ends: 6754
[2019-11-24 04:42:12,196 INFO  L226             Difference]: Without dead ends: 4970
[2019-11-24 04:42:12,200 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:42:12,208 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4970 states.
[2019-11-24 04:42:12,354 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4970 to 4374.
[2019-11-24 04:42:12,354 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4374 states.
[2019-11-24 04:42:12,365 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 8082 transitions.
[2019-11-24 04:42:12,366 INFO  L78                 Accepts]: Start accepts. Automaton has 4374 states and 8082 transitions. Word has length 19
[2019-11-24 04:42:12,366 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:42:12,366 INFO  L462      AbstractCegarLoop]: Abstraction has 4374 states and 8082 transitions.
[2019-11-24 04:42:12,366 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-24 04:42:12,366 INFO  L276                IsEmpty]: Start isEmpty. Operand 4374 states and 8082 transitions.
[2019-11-24 04:42:12,368 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2019-11-24 04:42:12,368 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:42:12,368 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:42:12,369 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:42:12,369 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:42:12,369 INFO  L82        PathProgramCache]: Analyzing trace with hash 36579722, now seen corresponding path program 1 times
[2019-11-24 04:42:12,369 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:42:12,370 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622011517]
[2019-11-24 04:42:12,370 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:42:12,398 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:42:12,438 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 04:42:12,438 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622011517]
[2019-11-24 04:42:12,439 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:42:12,439 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-24 04:42:12,439 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531426943]
[2019-11-24 04:42:12,439 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-24 04:42:12,440 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:42:12,440 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-24 04:42:12,440 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:42:12,440 INFO  L87              Difference]: Start difference. First operand 4374 states and 8082 transitions. Second operand 3 states.
[2019-11-24 04:42:12,886 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:42:12,886 INFO  L93              Difference]: Finished difference Result 4374 states and 8082 transitions.
[2019-11-24 04:42:12,887 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-24 04:42:12,887 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 20
[2019-11-24 04:42:12,888 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:42:12,920 INFO  L225             Difference]: With dead ends: 4374
[2019-11-24 04:42:12,921 INFO  L226             Difference]: Without dead ends: 4367
[2019-11-24 04:42:12,923 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:42:12,931 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4367 states.
[2019-11-24 04:42:13,054 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4367 to 4367.
[2019-11-24 04:42:13,054 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4367 states.
[2019-11-24 04:42:13,065 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4367 states to 4367 states and 8067 transitions.
[2019-11-24 04:42:13,066 INFO  L78                 Accepts]: Start accepts. Automaton has 4367 states and 8067 transitions. Word has length 20
[2019-11-24 04:42:13,066 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:42:13,066 INFO  L462      AbstractCegarLoop]: Abstraction has 4367 states and 8067 transitions.
[2019-11-24 04:42:13,066 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-24 04:42:13,066 INFO  L276                IsEmpty]: Start isEmpty. Operand 4367 states and 8067 transitions.
[2019-11-24 04:42:13,070 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2019-11-24 04:42:13,070 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:42:13,070 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:42:13,070 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:42:13,071 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:42:13,071 INFO  L82        PathProgramCache]: Analyzing trace with hash -1850948592, now seen corresponding path program 1 times
[2019-11-24 04:42:13,071 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:42:13,072 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932788349]
[2019-11-24 04:42:13,072 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:42:13,134 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:42:13,203 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 04:42:13,203 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932788349]
[2019-11-24 04:42:13,204 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:42:13,204 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-24 04:42:13,204 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88734340]
[2019-11-24 04:42:13,204 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-24 04:42:13,205 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:42:13,205 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-24 04:42:13,205 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-24 04:42:13,205 INFO  L87              Difference]: Start difference. First operand 4367 states and 8067 transitions. Second operand 4 states.
[2019-11-24 04:42:13,531 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:42:13,532 INFO  L93              Difference]: Finished difference Result 8278 states and 15232 transitions.
[2019-11-24 04:42:13,532 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-24 04:42:13,532 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 32
[2019-11-24 04:42:13,533 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:42:13,555 INFO  L225             Difference]: With dead ends: 8278
[2019-11-24 04:42:13,555 INFO  L226             Difference]: Without dead ends: 4279
[2019-11-24 04:42:13,562 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 04:42:13,568 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4279 states.
[2019-11-24 04:42:13,703 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4279 to 4083.
[2019-11-24 04:42:13,704 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4083 states.
[2019-11-24 04:42:13,720 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4083 states to 4083 states and 7536 transitions.
[2019-11-24 04:42:13,720 INFO  L78                 Accepts]: Start accepts. Automaton has 4083 states and 7536 transitions. Word has length 32
[2019-11-24 04:42:13,721 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:42:13,721 INFO  L462      AbstractCegarLoop]: Abstraction has 4083 states and 7536 transitions.
[2019-11-24 04:42:13,721 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-24 04:42:13,721 INFO  L276                IsEmpty]: Start isEmpty. Operand 4083 states and 7536 transitions.
[2019-11-24 04:42:13,725 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2019-11-24 04:42:13,726 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:42:13,726 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:42:13,726 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:42:13,726 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:42:13,727 INFO  L82        PathProgramCache]: Analyzing trace with hash 930620494, now seen corresponding path program 1 times
[2019-11-24 04:42:13,727 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:42:13,727 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710500081]
[2019-11-24 04:42:13,728 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:42:13,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:42:13,933 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 04:42:13,934 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710500081]
[2019-11-24 04:42:13,934 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:42:13,934 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-24 04:42:13,934 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992718991]
[2019-11-24 04:42:13,935 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-24 04:42:13,935 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:42:13,935 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-24 04:42:13,935 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-24 04:42:13,936 INFO  L87              Difference]: Start difference. First operand 4083 states and 7536 transitions. Second operand 4 states.
[2019-11-24 04:42:15,637 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:42:15,637 INFO  L93              Difference]: Finished difference Result 8271 states and 15302 transitions.
[2019-11-24 04:42:15,638 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-11-24 04:42:15,638 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 33
[2019-11-24 04:42:15,638 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:42:15,648 INFO  L225             Difference]: With dead ends: 8271
[2019-11-24 04:42:15,648 INFO  L226             Difference]: Without dead ends: 4421
[2019-11-24 04:42:15,655 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 04:42:15,662 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4421 states.
[2019-11-24 04:42:15,791 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 4083.
[2019-11-24 04:42:15,792 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4083 states.
[2019-11-24 04:42:15,800 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4083 states to 4083 states and 7411 transitions.
[2019-11-24 04:42:15,801 INFO  L78                 Accepts]: Start accepts. Automaton has 4083 states and 7411 transitions. Word has length 33
[2019-11-24 04:42:15,802 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:42:15,803 INFO  L462      AbstractCegarLoop]: Abstraction has 4083 states and 7411 transitions.
[2019-11-24 04:42:15,804 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-24 04:42:15,804 INFO  L276                IsEmpty]: Start isEmpty. Operand 4083 states and 7411 transitions.
[2019-11-24 04:42:15,809 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2019-11-24 04:42:15,809 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:42:15,809 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:42:15,810 INFO  L410      AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:42:15,810 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:42:15,810 INFO  L82        PathProgramCache]: Analyzing trace with hash 1252863686, now seen corresponding path program 1 times
[2019-11-24 04:42:15,810 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:42:15,811 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496145183]
[2019-11-24 04:42:15,811 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:42:15,937 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:42:16,066 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 04:42:16,066 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496145183]
[2019-11-24 04:42:16,066 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:42:16,067 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-24 04:42:16,067 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919047517]
[2019-11-24 04:42:16,067 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-24 04:42:16,067 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:42:16,068 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-24 04:42:16,069 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:42:16,069 INFO  L87              Difference]: Start difference. First operand 4083 states and 7411 transitions. Second operand 3 states.
[2019-11-24 04:42:17,704 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:42:17,705 INFO  L93              Difference]: Finished difference Result 10675 states and 19421 transitions.
[2019-11-24 04:42:17,705 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-24 04:42:17,705 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 38
[2019-11-24 04:42:17,705 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:42:17,720 INFO  L225             Difference]: With dead ends: 10675
[2019-11-24 04:42:17,721 INFO  L226             Difference]: Without dead ends: 6846
[2019-11-24 04:42:17,728 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:42:17,737 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6846 states.
[2019-11-24 04:42:17,924 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6846 to 4008.
[2019-11-24 04:42:17,925 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4008 states.
[2019-11-24 04:42:17,933 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 7211 transitions.
[2019-11-24 04:42:17,933 INFO  L78                 Accepts]: Start accepts. Automaton has 4008 states and 7211 transitions. Word has length 38
[2019-11-24 04:42:17,933 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:42:17,934 INFO  L462      AbstractCegarLoop]: Abstraction has 4008 states and 7211 transitions.
[2019-11-24 04:42:17,934 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-24 04:42:17,934 INFO  L276                IsEmpty]: Start isEmpty. Operand 4008 states and 7211 transitions.
[2019-11-24 04:42:17,938 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2019-11-24 04:42:17,938 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:42:17,938 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:42:17,938 INFO  L410      AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:42:17,939 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:42:17,939 INFO  L82        PathProgramCache]: Analyzing trace with hash 587445943, now seen corresponding path program 1 times
[2019-11-24 04:42:17,939 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:42:17,939 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113850903]
[2019-11-24 04:42:17,940 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:42:18,072 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:42:18,187 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 04:42:18,187 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113850903]
[2019-11-24 04:42:18,187 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:42:18,188 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-24 04:42:18,188 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095415293]
[2019-11-24 04:42:18,188 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-24 04:42:18,188 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:42:18,189 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-24 04:42:18,190 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:42:18,190 INFO  L87              Difference]: Start difference. First operand 4008 states and 7211 transitions. Second operand 3 states.
[2019-11-24 04:42:19,540 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:42:19,540 INFO  L93              Difference]: Finished difference Result 10518 states and 19029 transitions.
[2019-11-24 04:42:19,541 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-24 04:42:19,541 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 39
[2019-11-24 04:42:19,541 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:42:19,554 INFO  L225             Difference]: With dead ends: 10518
[2019-11-24 04:42:19,555 INFO  L226             Difference]: Without dead ends: 6791
[2019-11-24 04:42:19,562 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:42:19,570 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6791 states.
[2019-11-24 04:42:19,753 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6791 to 3958.
[2019-11-24 04:42:19,753 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3958 states.
[2019-11-24 04:42:19,761 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3958 states to 3958 states and 7036 transitions.
[2019-11-24 04:42:19,761 INFO  L78                 Accepts]: Start accepts. Automaton has 3958 states and 7036 transitions. Word has length 39
[2019-11-24 04:42:19,763 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:42:19,763 INFO  L462      AbstractCegarLoop]: Abstraction has 3958 states and 7036 transitions.
[2019-11-24 04:42:19,763 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-24 04:42:19,763 INFO  L276                IsEmpty]: Start isEmpty. Operand 3958 states and 7036 transitions.
[2019-11-24 04:42:19,766 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2019-11-24 04:42:19,766 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:42:19,767 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:42:19,767 INFO  L410      AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:42:19,767 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:42:19,768 INFO  L82        PathProgramCache]: Analyzing trace with hash -808423886, now seen corresponding path program 1 times
[2019-11-24 04:42:19,768 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:42:19,768 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096696222]
[2019-11-24 04:42:19,768 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:42:19,873 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:42:19,994 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 04:42:19,995 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096696222]
[2019-11-24 04:42:19,995 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:42:19,995 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-24 04:42:19,996 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657643334]
[2019-11-24 04:42:19,996 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-24 04:42:19,996 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:42:19,996 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-24 04:42:19,997 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:42:19,997 INFO  L87              Difference]: Start difference. First operand 3958 states and 7036 transitions. Second operand 3 states.
[2019-11-24 04:42:21,409 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:42:21,409 INFO  L93              Difference]: Finished difference Result 10406 states and 18682 transitions.
[2019-11-24 04:42:21,410 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-24 04:42:21,410 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 41
[2019-11-24 04:42:21,410 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:42:21,421 INFO  L225             Difference]: With dead ends: 10406
[2019-11-24 04:42:21,421 INFO  L226             Difference]: Without dead ends: 6761
[2019-11-24 04:42:21,428 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:42:21,436 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6761 states.