java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label46_true-unreach-call.c


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


This is Ultimate 0.1.23-df4b876
[2018-11-07 15:14:00,993 INFO  L170        SettingsManager]: Resetting all preferences to default values...
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[2018-11-07 15:14:01,037 INFO  L98         SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf
[2018-11-07 15:14:01,053 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-11-07 15:14:01,054 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-11-07 15:14:01,055 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-11-07 15:14:01,055 INFO  L133        SettingsManager]:  * User list type=DISABLED
[2018-11-07 15:14:01,055 INFO  L133        SettingsManager]:  * calls to implemented procedures=false
[2018-11-07 15:14:01,055 INFO  L131        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2018-11-07 15:14:01,055 INFO  L133        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2018-11-07 15:14:01,056 INFO  L133        SettingsManager]:  * Octagon Domain=false
[2018-11-07 15:14:01,056 INFO  L133        SettingsManager]:  * Abstract domain=CompoundDomain
[2018-11-07 15:14:01,056 INFO  L133        SettingsManager]:  * Log string format=TERM
[2018-11-07 15:14:01,056 INFO  L133        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2018-11-07 15:14:01,056 INFO  L133        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2018-11-07 15:14:01,057 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-11-07 15:14:01,057 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-11-07 15:14:01,057 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-11-07 15:14:01,057 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-11-07 15:14:01,058 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-11-07 15:14:01,058 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-11-07 15:14:01,058 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-11-07 15:14:01,058 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-11-07 15:14:01,058 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-11-07 15:14:01,059 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-11-07 15:14:01,059 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-11-07 15:14:01,059 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-11-07 15:14:01,059 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-11-07 15:14:01,059 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-11-07 15:14:01,060 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-11-07 15:14:01,060 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-11-07 15:14:01,060 INFO  L133        SettingsManager]:  * Trace refinement strategy=TAIPAN
[2018-11-07 15:14:01,060 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-11-07 15:14:01,060 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-11-07 15:14:01,060 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-11-07 15:14:01,061 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-11-07 15:14:01,061 INFO  L133        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2018-11-07 15:14:01,131 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-11-07 15:14:01,148 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-11-07 15:14:01,151 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-11-07 15:14:01,154 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-11-07 15:14:01,154 INFO  L276        PluginConnector]: CDTParser initialized
[2018-11-07 15:14:01,155 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label46_true-unreach-call.c
[2018-11-07 15:14:01,228 INFO  L218              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a83414e8/6b5bb8bfba9f40ed8b6063db6f35603a/FLAGcb79fc7f1
[2018-11-07 15:14:01,929 INFO  L298              CDTParser]: Found 1 translation units.
[2018-11-07 15:14:01,930 INFO  L158              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label46_true-unreach-call.c
[2018-11-07 15:14:01,961 INFO  L346              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a83414e8/6b5bb8bfba9f40ed8b6063db6f35603a/FLAGcb79fc7f1
[2018-11-07 15:14:01,982 INFO  L354              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a83414e8/6b5bb8bfba9f40ed8b6063db6f35603a
[2018-11-07 15:14:01,996 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-11-07 15:14:01,998 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-11-07 15:14:02,000 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-11-07 15:14:02,000 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-11-07 15:14:02,007 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-11-07 15:14:02,008 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:14:01" (1/1) ...
[2018-11-07 15:14:02,011 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c679a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:02, skipping insertion in model container
[2018-11-07 15:14:02,012 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:14:01" (1/1) ...
[2018-11-07 15:14:02,023 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-11-07 15:14:02,123 INFO  L174         MainTranslator]: Built tables and reachable declarations
[2018-11-07 15:14:03,061 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-11-07 15:14:03,065 INFO  L189         MainTranslator]: Completed pre-run
[2018-11-07 15:14:03,356 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-11-07 15:14:03,377 INFO  L193         MainTranslator]: Completed translation
[2018-11-07 15:14:03,377 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03 WrapperNode
[2018-11-07 15:14:03,378 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-11-07 15:14:03,379 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-11-07 15:14:03,379 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-11-07 15:14:03,379 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-11-07 15:14:03,390 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (1/1) ...
[2018-11-07 15:14:03,624 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (1/1) ...
[2018-11-07 15:14:03,640 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-11-07 15:14:03,640 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-11-07 15:14:03,640 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-11-07 15:14:03,641 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-11-07 15:14:03,654 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (1/1) ...
[2018-11-07 15:14:03,654 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (1/1) ...
[2018-11-07 15:14:03,667 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (1/1) ...
[2018-11-07 15:14:03,668 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (1/1) ...
[2018-11-07 15:14:03,748 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (1/1) ...
[2018-11-07 15:14:03,775 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (1/1) ...
[2018-11-07 15:14:03,799 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (1/1) ...
[2018-11-07 15:14:03,820 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-11-07 15:14:03,821 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-11-07 15:14:03,821 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-11-07 15:14:03,821 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-11-07 15:14:03,822 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (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
[2018-11-07 15:14:03,888 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2018-11-07 15:14:03,888 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-11-07 15:14:03,888 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-11-07 15:14:03,888 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2018-11-07 15:14:03,888 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2018-11-07 15:14:03,889 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2018-11-07 15:14:03,889 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2018-11-07 15:14:03,889 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-11-07 15:14:03,889 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-11-07 15:14:03,889 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2018-11-07 15:14:03,889 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2018-11-07 15:14:10,479 INFO  L276             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-11-07 15:14:10,480 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:14:10 BoogieIcfgContainer
[2018-11-07 15:14:10,480 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-11-07 15:14:10,481 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-11-07 15:14:10,482 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-11-07 15:14:10,486 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-11-07 15:14:10,486 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:14:01" (1/3) ...
[2018-11-07 15:14:10,487 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3461119f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:14:10, skipping insertion in model container
[2018-11-07 15:14:10,487 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:03" (2/3) ...
[2018-11-07 15:14:10,488 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3461119f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:14:10, skipping insertion in model container
[2018-11-07 15:14:10,488 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:14:10" (3/3) ...
[2018-11-07 15:14:10,491 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem15_label46_true-unreach-call.c
[2018-11-07 15:14:10,500 INFO  L136   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-11-07 15:14:10,509 INFO  L148   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-11-07 15:14:10,526 INFO  L257      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-11-07 15:14:10,567 INFO  L382      AbstractCegarLoop]: Interprodecural is true
[2018-11-07 15:14:10,568 INFO  L383      AbstractCegarLoop]: Hoare is true
[2018-11-07 15:14:10,568 INFO  L384      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-11-07 15:14:10,568 INFO  L385      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-11-07 15:14:10,568 INFO  L386      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-11-07 15:14:10,568 INFO  L387      AbstractCegarLoop]: Difference is false
[2018-11-07 15:14:10,568 INFO  L388      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-11-07 15:14:10,569 INFO  L393      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-11-07 15:14:10,602 INFO  L276                IsEmpty]: Start isEmpty. Operand 438 states.
[2018-11-07 15:14:10,612 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2018-11-07 15:14:10,612 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-07 15:14:10,615 INFO  L375         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, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-07 15:14:10,618 INFO  L423      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-07 15:14:10,623 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-07 15:14:10,624 INFO  L82        PathProgramCache]: Analyzing trace with hash -171109996, now seen corresponding path program 1 times
[2018-11-07 15:14:10,626 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-11-07 15:14:10,676 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 15:14:10,676 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-07 15:14:10,676 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 15:14:10,677 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-11-07 15:14:10,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-07 15:14:11,098 WARN  L179               SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-11-07 15:14:11,186 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-07 15:14:11,189 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-07 15:14:11,189 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-11-07 15:14:11,189 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-11-07 15:14:11,196 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-11-07 15:14:11,215 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-11-07 15:14:11,216 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-11-07 15:14:11,219 INFO  L87              Difference]: Start difference. First operand 438 states. Second operand 3 states.
[2018-11-07 15:14:14,845 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-07 15:14:14,846 INFO  L93              Difference]: Finished difference Result 1198 states and 2158 transitions.
[2018-11-07 15:14:14,847 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-11-07 15:14:14,848 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 50
[2018-11-07 15:14:14,848 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-07 15:14:14,874 INFO  L225             Difference]: With dead ends: 1198
[2018-11-07 15:14:14,874 INFO  L226             Difference]: Without dead ends: 758
[2018-11-07 15:14:14,885 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-11-07 15:14:14,907 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 758 states.
[2018-11-07 15:14:15,003 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 754.
[2018-11-07 15:14:15,005 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 754 states.
[2018-11-07 15:14:15,015 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1328 transitions.
[2018-11-07 15:14:15,018 INFO  L78                 Accepts]: Start accepts. Automaton has 754 states and 1328 transitions. Word has length 50
[2018-11-07 15:14:15,019 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-07 15:14:15,019 INFO  L480      AbstractCegarLoop]: Abstraction has 754 states and 1328 transitions.
[2018-11-07 15:14:15,019 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-11-07 15:14:15,019 INFO  L276                IsEmpty]: Start isEmpty. Operand 754 states and 1328 transitions.
[2018-11-07 15:14:15,035 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 125
[2018-11-07 15:14:15,036 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-07 15:14:15,036 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2018-11-07 15:14:15,036 INFO  L423      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-07 15:14:15,037 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-07 15:14:15,037 INFO  L82        PathProgramCache]: Analyzing trace with hash 1340083984, now seen corresponding path program 1 times
[2018-11-07 15:14:15,037 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-11-07 15:14:15,039 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 15:14:15,039 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-07 15:14:15,039 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 15:14:15,040 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-11-07 15:14:15,183 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-07 15:14:15,373 INFO  L134       CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-07 15:14:15,373 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-07 15:14:15,373 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2018-11-07 15:14:15,374 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-11-07 15:14:15,377 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-11-07 15:14:15,377 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-11-07 15:14:15,377 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-11-07 15:14:15,378 INFO  L87              Difference]: Start difference. First operand 754 states and 1328 transitions. Second operand 5 states.
[2018-11-07 15:14:20,955 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-07 15:14:20,955 INFO  L93              Difference]: Finished difference Result 2231 states and 3964 transitions.
[2018-11-07 15:14:20,966 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-11-07 15:14:20,967 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 124
[2018-11-07 15:14:20,967 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-07 15:14:20,979 INFO  L225             Difference]: With dead ends: 2231
[2018-11-07 15:14:20,979 INFO  L226             Difference]: Without dead ends: 1483
[2018-11-07 15:14:20,984 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2018-11-07 15:14:20,985 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1483 states.
[2018-11-07 15:14:21,044 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1449.
[2018-11-07 15:14:21,044 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1449 states.
[2018-11-07 15:14:21,053 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2254 transitions.
[2018-11-07 15:14:21,053 INFO  L78                 Accepts]: Start accepts. Automaton has 1449 states and 2254 transitions. Word has length 124
[2018-11-07 15:14:21,054 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-07 15:14:21,054 INFO  L480      AbstractCegarLoop]: Abstraction has 1449 states and 2254 transitions.
[2018-11-07 15:14:21,054 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-11-07 15:14:21,054 INFO  L276                IsEmpty]: Start isEmpty. Operand 1449 states and 2254 transitions.
[2018-11-07 15:14:21,061 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 137
[2018-11-07 15:14:21,061 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-07 15:14:21,063 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-07 15:14:21,064 INFO  L423      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-07 15:14:21,064 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-07 15:14:21,064 INFO  L82        PathProgramCache]: Analyzing trace with hash 1528606616, now seen corresponding path program 1 times
[2018-11-07 15:14:21,064 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-11-07 15:14:21,065 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 15:14:21,066 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-07 15:14:21,066 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 15:14:21,066 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-11-07 15:14:21,117 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-07 15:14:21,347 INFO  L134       CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-07 15:14:21,347 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-07 15:14:21,347 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2018-11-07 15:14:21,348 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-11-07 15:14:21,348 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-11-07 15:14:21,349 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-11-07 15:14:21,349 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2018-11-07 15:14:21,349 INFO  L87              Difference]: Start difference. First operand 1449 states and 2254 transitions. Second operand 6 states.
[2018-11-07 15:14:26,995 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-07 15:14:26,996 INFO  L93              Difference]: Finished difference Result 4188 states and 6605 transitions.
[2018-11-07 15:14:26,997 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-11-07 15:14:26,997 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 136
[2018-11-07 15:14:27,000 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-07 15:14:27,019 INFO  L225             Difference]: With dead ends: 4188
[2018-11-07 15:14:27,019 INFO  L226             Difference]: Without dead ends: 2745
[2018-11-07 15:14:27,029 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2018-11-07 15:14:27,032 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2745 states.
[2018-11-07 15:14:27,109 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2711.
[2018-11-07 15:14:27,109 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2711 states.
[2018-11-07 15:14:27,120 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3819 transitions.
[2018-11-07 15:14:27,120 INFO  L78                 Accepts]: Start accepts. Automaton has 2711 states and 3819 transitions. Word has length 136
[2018-11-07 15:14:27,121 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-07 15:14:27,121 INFO  L480      AbstractCegarLoop]: Abstraction has 2711 states and 3819 transitions.
[2018-11-07 15:14:27,121 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-11-07 15:14:27,121 INFO  L276                IsEmpty]: Start isEmpty. Operand 2711 states and 3819 transitions.
[2018-11-07 15:14:27,124 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 138
[2018-11-07 15:14:27,124 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-07 15:14:27,124 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-07 15:14:27,124 INFO  L423      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-07 15:14:27,125 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-07 15:14:27,125 INFO  L82        PathProgramCache]: Analyzing trace with hash -929559410, now seen corresponding path program 1 times
[2018-11-07 15:14:27,125 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-11-07 15:14:27,126 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 15:14:27,126 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-07 15:14:27,126 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 15:14:27,126 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-11-07 15:14:27,153 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-07 15:14:27,402 WARN  L179               SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-11-07 15:14:27,531 INFO  L134       CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-07 15:14:27,532 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-07 15:14:27,532 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2018-11-07 15:14:27,532 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-11-07 15:14:27,533 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-11-07 15:14:27,533 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-11-07 15:14:27,533 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2018-11-07 15:14:27,534 INFO  L87              Difference]: Start difference. First operand 2711 states and 3819 transitions. Second operand 6 states.
[2018-11-07 15:14:31,833 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-07 15:14:31,833 INFO  L93              Difference]: Finished difference Result 6679 states and 9540 transitions.
[2018-11-07 15:14:31,842 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-11-07 15:14:31,842 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 137
[2018-11-07 15:14:31,842 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-07 15:14:31,869 INFO  L225             Difference]: With dead ends: 6679
[2018-11-07 15:14:31,869 INFO  L226             Difference]: Without dead ends: 3974
[2018-11-07 15:14:31,883 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2018-11-07 15:14:31,887 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3974 states.
[2018-11-07 15:14:31,982 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3974 to 3953.
[2018-11-07 15:14:31,982 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3953 states.
[2018-11-07 15:14:31,995 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 5247 transitions.
[2018-11-07 15:14:31,996 INFO  L78                 Accepts]: Start accepts. Automaton has 3953 states and 5247 transitions. Word has length 137
[2018-11-07 15:14:31,996 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-07 15:14:31,997 INFO  L480      AbstractCegarLoop]: Abstraction has 3953 states and 5247 transitions.
[2018-11-07 15:14:31,997 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-11-07 15:14:31,997 INFO  L276                IsEmpty]: Start isEmpty. Operand 3953 states and 5247 transitions.
[2018-11-07 15:14:32,000 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 178
[2018-11-07 15:14:32,000 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-07 15:14:32,000 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-07 15:14:32,001 INFO  L423      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-07 15:14:32,001 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-07 15:14:32,001 INFO  L82        PathProgramCache]: Analyzing trace with hash -470998967, now seen corresponding path program 1 times
[2018-11-07 15:14:32,001 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-11-07 15:14:32,002 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 15:14:32,002 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-07 15:14:32,002 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 15:14:32,003 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-11-07 15:14:32,036 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-07 15:14:32,271 INFO  L134       CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-07 15:14:32,272 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-07 15:14:32,272 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2018-11-07 15:14:32,272 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-11-07 15:14:32,272 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-11-07 15:14:32,273 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-11-07 15:14:32,273 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2018-11-07 15:14:32,273 INFO  L87              Difference]: Start difference. First operand 3953 states and 5247 transitions. Second operand 6 states.
[2018-11-07 15:14:38,959 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-07 15:14:38,960 INFO  L93              Difference]: Finished difference Result 14030 states and 18946 transitions.
[2018-11-07 15:14:38,960 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-11-07 15:14:38,960 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 177
[2018-11-07 15:14:38,961 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-07 15:14:39,014 INFO  L225             Difference]: With dead ends: 14030
[2018-11-07 15:14:39,014 INFO  L226             Difference]: Without dead ends: 10083
[2018-11-07 15:14:39,039 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2018-11-07 15:14:39,048 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10083 states.
[2018-11-07 15:14:39,268 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10083 to 9881.
[2018-11-07 15:14:39,268 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 9881 states.
[2018-11-07 15:14:39,302 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9881 states to 9881 states and 12497 transitions.
[2018-11-07 15:14:39,302 INFO  L78                 Accepts]: Start accepts. Automaton has 9881 states and 12497 transitions. Word has length 177
[2018-11-07 15:14:39,303 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-07 15:14:39,303 INFO  L480      AbstractCegarLoop]: Abstraction has 9881 states and 12497 transitions.
[2018-11-07 15:14:39,303 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-11-07 15:14:39,303 INFO  L276                IsEmpty]: Start isEmpty. Operand 9881 states and 12497 transitions.
[2018-11-07 15:14:39,312 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 206
[2018-11-07 15:14:39,312 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-07 15:14:39,312 INFO  L375         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-07 15:14:39,313 INFO  L423      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-07 15:14:39,313 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-07 15:14:39,313 INFO  L82        PathProgramCache]: Analyzing trace with hash 933056982, now seen corresponding path program 1 times
[2018-11-07 15:14:39,313 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-11-07 15:14:39,314 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 15:14:39,315 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-07 15:14:39,315 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 15:14:39,315 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-11-07 15:14:39,357 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-07 15:14:39,638 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked.
[2018-11-07 15:14:39,638 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-07 15:14:39,638 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-11-07 15:14:39,639 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-11-07 15:14:39,639 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-11-07 15:14:39,639 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-11-07 15:14:39,640 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-07 15:14:39,640 INFO  L87              Difference]: Start difference. First operand 9881 states and 12497 transitions. Second operand 4 states.
[2018-11-07 15:14:44,085 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-07 15:14:44,086 INFO  L93              Difference]: Finished difference Result 27823 states and 37308 transitions.
[2018-11-07 15:14:44,086 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-11-07 15:14:44,086 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 205
[2018-11-07 15:14:44,087 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-07 15:14:44,159 INFO  L225             Difference]: With dead ends: 27823
[2018-11-07 15:14:44,160 INFO  L226             Difference]: Without dead ends: 17948
[2018-11-07 15:14:44,215 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-07 15:14:44,229 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17948 states.
[2018-11-07 15:14:44,537 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17948 to 17323.
[2018-11-07 15:14:44,538 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 17323 states.
[2018-11-07 15:14:44,577 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17323 states to 17323 states and 21277 transitions.
[2018-11-07 15:14:44,578 INFO  L78                 Accepts]: Start accepts. Automaton has 17323 states and 21277 transitions. Word has length 205
[2018-11-07 15:14:44,578 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-07 15:14:44,578 INFO  L480      AbstractCegarLoop]: Abstraction has 17323 states and 21277 transitions.
[2018-11-07 15:14:44,578 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-11-07 15:14:44,579 INFO  L276                IsEmpty]: Start isEmpty. Operand 17323 states and 21277 transitions.
[2018-11-07 15:14:44,588 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 219
[2018-11-07 15:14:44,589 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-07 15:14:44,589 INFO  L375         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-07 15:14:44,589 INFO  L423      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-07 15:14:44,590 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-07 15:14:44,590 INFO  L82        PathProgramCache]: Analyzing trace with hash -75498616, now seen corresponding path program 1 times
[2018-11-07 15:14:44,590 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-11-07 15:14:44,591 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 15:14:44,591 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-07 15:14:44,591 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 15:14:44,591 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-11-07 15:14:44,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-07 15:14:44,817 WARN  L179               SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3
[2018-11-07 15:14:44,846 INFO  L134       CoverageAnalysis]: Checked inductivity of 167 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked.
[2018-11-07 15:14:44,846 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-07 15:14:44,847 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-11-07 15:14:44,847 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-11-07 15:14:44,847 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-11-07 15:14:44,848 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-11-07 15:14:44,848 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-11-07 15:14:44,848 INFO  L87              Difference]: Start difference. First operand 17323 states and 21277 transitions. Second operand 3 states.
[2018-11-07 15:14:47,783 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-07 15:14:47,783 INFO  L93              Difference]: Finished difference Result 40319 states and 50745 transitions.
[2018-11-07 15:14:47,786 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-11-07 15:14:47,786 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 218
[2018-11-07 15:14:47,787 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-07 15:14:47,873 INFO  L225             Difference]: With dead ends: 40319
[2018-11-07 15:14:47,873 INFO  L226             Difference]: Without dead ends: 23002
[2018-11-07 15:14:47,929 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-11-07 15:14:47,952 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23002 states.
[2018-11-07 15:14:48,375 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23002 to 22945.
[2018-11-07 15:14:48,375 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22945 states.
[2018-11-07 15:14:48,435 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22945 states to 22945 states and 28701 transitions.
[2018-11-07 15:14:48,436 INFO  L78                 Accepts]: Start accepts. Automaton has 22945 states and 28701 transitions. Word has length 218
[2018-11-07 15:14:48,436 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-07 15:14:48,436 INFO  L480      AbstractCegarLoop]: Abstraction has 22945 states and 28701 transitions.
[2018-11-07 15:14:48,437 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-11-07 15:14:48,437 INFO  L276                IsEmpty]: Start isEmpty. Operand 22945 states and 28701 transitions.
[2018-11-07 15:14:48,453 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 232
[2018-11-07 15:14:48,454 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-07 15:14:48,454 INFO  L375         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2018-11-07 15:14:48,454 INFO  L423      AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-07 15:14:48,455 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-07 15:14:48,455 INFO  L82        PathProgramCache]: Analyzing trace with hash 976466900, now seen corresponding path program 1 times
[2018-11-07 15:14:48,455 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-11-07 15:14:48,456 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 15:14:48,456 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-07 15:14:48,456 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 15:14:48,456 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-11-07 15:14:48,501 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-07 15:14:49,157 INFO  L134       CoverageAnalysis]: Checked inductivity of 167 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked.
[2018-11-07 15:14:49,158 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-11-07 15:14:49,158 INFO  L194   anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION
[2018-11-07 15:14:49,160 INFO  L200      CegarAbsIntRunner]: Running AI on error trace of length 232 with the following transitions: 
[2018-11-07 15:14:49,169 INFO  L202      CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667]
[2018-11-07 15:14:49,252 INFO  L148    AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain]
[2018-11-07 15:14:49,252 INFO  L101         FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2)
[2018-11-07 15:14:49,845 INFO  L266    AbstractInterpreter]: Error location(s) were unreachable
[2018-11-07 15:14:49,847 INFO  L272    AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables.
[2018-11-07 15:14:50,102 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-07 15:14:50,103 INFO  L398   sIntCurrentIteration]: Generating AbsInt predicates
[2018-11-07 15:14:50,614 INFO  L227   lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 77.91% of their original sizes.
[2018-11-07 15:14:50,614 INFO  L413   sIntCurrentIteration]: Unifying AI predicates
[2018-11-07 15:14:51,105 INFO  L415   sIntCurrentIteration]: We unified 230 AI predicates to 230
[2018-11-07 15:14:51,105 INFO  L424   sIntCurrentIteration]: Finished generation of AbsInt predicates
[2018-11-07 15:14:51,106 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2018-11-07 15:14:51,107 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13
[2018-11-07 15:14:51,107 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-11-07 15:14:51,107 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-11-07 15:14:51,108 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-11-07 15:14:51,108 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2018-11-07 15:14:51,108 INFO  L87              Difference]: Start difference. First operand 22945 states and 28701 transitions. Second operand 8 states.
[2018-11-07 15:14:55,093 WARN  L79         EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.
Received shutdown request...
Cannot interrupt operation gracefully because timeout expired. Forcing shutdown